kitodo / kitodo-presentation

dlf/common/class.tx_dlf_document.php

Indentation +1797 added lines, -1797 removed lines

@@ -20,2614 +20,2614 @@
  */
 final class tx_dlf_document {
 
-	/**
-	 * This holds the whole XML file as string for serialization purposes
-	 * @see __sleep() / __wakeup()
-	 *
-	 * @var	string
-	 * @access protected
-	 */
-	protected $asXML = '';
-
-	/**
-	 * This holds the PID for the configuration
-	 *
-	 * @var	integer
-	 * @access protected
-	 */
-	protected $cPid = 0;
-
-	/**
-	 * This holds the XML file's dmdSec parts with their IDs as array key
-	 *
-	 * @var	array
-	 * @access protected
-	 */
-	protected $dmdSec = array ();
-
-	/**
-	 * Are the METS file's dmdSecs loaded?
-	 * @see $dmdSec
-	 *
-	 * @var	boolean
-	 * @access protected
-	 */
-	protected $dmdSecLoaded = FALSE;
-
-	/**
-	 * The extension key
-	 *
-	 * @var	string
-	 * @access public
-	 */
-	public static $extKey = 'dlf';
-
-	/**
-	 * This holds the file ID -> USE concordance
-	 * @see _getFileGrps()
-	 *
-	 * @var	array
-	 * @access protected
-	 */
-	protected $fileGrps = array ();
-
-	/**
-	 * Are the file groups loaded?
-	 * @see $fileGrps
-	 *
-	 * @var	boolean
-	 * @access protected
-	 */
-	protected $fileGrpsLoaded = FALSE;
-
-	/**
-	 * This holds the configuration for all supported metadata encodings
-	 * @see loadFormats()
-	 *
-	 * @var	array
-	 * @access protected
-	 */
-	protected $formats = array (
-		'METS' => array (
-			'rootElement' => 'mets',
-			'namespaceURI' => 'http://www.loc.gov/METS/',
-		),
-		'XLINK' => array (
-			'rootElement' => 'xlink',
-			'namespaceURI' => 'http://www.w3.org/1999/xlink',
-		)
-	);
-
-	/**
-	 * Are the available metadata formats loaded?
-	 * @see $formats
-	 *
-	 * @var	boolean
-	 * @access protected
-	 */
-	protected $formatsLoaded = FALSE;
-
-	/**
-	 * Are there any fulltext files available?
-	 *
-	 * @var boolean
-	 * @access protected
-	 */
-	protected $hasFulltext = FALSE;
-
-	/**
-	 * This holds the documents location
-	 *
-	 * @var	string
-	 * @access protected
-	 */
-	protected $location = '';
-
-	/**
-	 * This holds the logical units
-	 *
-	 * @var	array
-	 * @access protected
-	 */
-	protected $logicalUnits = array ();
-
-	/**
-	 * This holds the documents' parsed metadata array with their corresponding structMap//div's ID as array key
-	 *
-	 * @var	array
-	 * @access protected
-	 */
-	protected $metadataArray = array ();
-
-	/**
-	 * Is the metadata array loaded?
-	 * @see $metadataArray
-	 *
-	 * @var	boolean
-	 * @access protected
-	 */
-	protected $metadataArrayLoaded = FALSE;
-
-	/**
-	 * This holds the XML file's METS part as SimpleXMLElement object
-	 *
-	 * @var	SimpleXMLElement
-	 * @access protected
-	 */
-	protected $mets;
-
-	/**
-	 * The holds the total number of pages
-	 *
-	 * @var	integer
-	 * @access protected
-	 */
-	protected $numPages = 0;
-
-	/**
-	 * This holds the UID of the parent document or zero if not multi-volumed
-	 *
-	 * @var	integer
-	 * @access protected
-	 */
-	protected $parentId = 0;
-
-	/**
-	 * This holds the physical structure
-	 *
-	 * @var	array
-	 * @access protected
-	 */
-	protected $physicalStructure = array ();
-
-	/**
-	 * This holds the physical structure metadata
-	 *
-	 * @var	array
-	 * @access protected
-	 */
-	protected $physicalStructureInfo = array ();
-
-	/**
-	 * Is the physical structure loaded?
-	 * @see $physicalStructure
-	 *
-	 * @var	boolean
-	 * @access protected
-	 */
-	protected $physicalStructureLoaded = FALSE;
-
-	/**
-	 * This holds the PID of the document or zero if not in database
-	 *
-	 * @var	integer
-	 * @access protected
-	 */
-	protected $pid = 0;
-
-	/**
-	 * Is the document instantiated successfully?
-	 *
-	 * @var	boolean
-	 * @access protected
-	 */
-	protected $ready = FALSE;
-
-	/**
-	 * The METS file's record identifier
-	 *
-	 * @var	string
-	 * @access protected
-	 */
-	protected $recordId;
-
-	/**
-	 * This holds the singleton object of the document
-	 *
-	 * @var	array (tx_dlf_document)
-	 * @access protected
-	 */
-	protected static $registry = array ();
-
-	/**
-	 * This holds the UID of the root document or zero if not multi-volumed
-	 *
-	 * @var	integer
-	 * @access protected
-	 */
-	protected $rootId = 0;
-
-	/**
-	 * Is the root id loaded?
-	 * @see $rootId
-	 *
-	 * @var	boolean
-	 * @access protected
-	 */
-	protected $rootIdLoaded = FALSE;
-
-	/**
-	 * This holds the smLinks between logical and physical structMap
-	 *
-	 * @var	array
-	 * @access protected
-	 */
-	protected $smLinks = array ('l2p' => array (), 'p2l' => array ());
-
-	/**
-	 * Are the smLinks loaded?
-	 * @see $smLinks
-	 *
-	 * @var	boolean
-	 * @access protected
-	 */
-	protected $smLinksLoaded = FALSE;
-
-	/**
-	 * This holds the logical structure
-	 *
-	 * @var	array
-	 * @access protected
-	 */
-	protected $tableOfContents = array ();
-
-	/**
-	 * Is the table of contents loaded?
-	 * @see $tableOfContents
-	 *
-	 * @var	boolean
-	 * @access protected
-	 */
-	protected $tableOfContentsLoaded = FALSE;
-
-	/**
-	 * This holds the document's thumbnail location.
-	 *
-	 * @var	string
-	 * @access protected
-	 */
-	protected $thumbnail = '';
-
-	/**
-	 * Is the document's thumbnail location loaded?
-	 * @see $thumbnail
-	 *
-	 * @var	boolean
-	 * @access protected
-	 */
-	protected $thumbnailLoaded = FALSE;
-
-	/**
-	 * This holds the toplevel structure's @ID
-	 *
-	 * @var	string
-	 * @access protected
-	 */
-	protected $toplevelId = '';
-
-	/**
-	 * This holds the UID or the URL of the document
-	 *
-	 * @var	mixed
-	 * @access protected
-	 */
-	protected $uid = 0;
-
-	/**
-	 * This holds the whole XML file as SimpleXMLElement object
-	 *
-	 * @var	SimpleXMLElement
-	 * @access protected
-	 */
-	protected $xml;
-
-	/**
-	 * This clears the static registry to prevent memory exhaustion
-	 *
-	 * @access	public
-	 *
-	 * @return	void
-	 */
-	public static function clearRegistry() {
-
-		// Reset registry array.
-		self::$registry = array ();
-
-	}
-
-	/**
-	 * This gets the location of a file representing a physical page or track
-	 *
-	 * @access	public
-	 *
-	 * @param	string		$id: The @ID attribute of the file node
-	 *
-	 * @return	string		The file's location as URL
-	 */
-	public function getFileLocation($id) {
+    /**
+     * This holds the whole XML file as string for serialization purposes
+     * @see __sleep() / __wakeup()
+     *
+     * @var	string
+     * @access protected
+     */
+    protected $asXML = '';
+
+    /**
+     * This holds the PID for the configuration
+     *
+     * @var	integer
+     * @access protected
+     */
+    protected $cPid = 0;
+
+    /**
+     * This holds the XML file's dmdSec parts with their IDs as array key
+     *
+     * @var	array
+     * @access protected
+     */
+    protected $dmdSec = array ();
+
+    /**
+     * Are the METS file's dmdSecs loaded?
+     * @see $dmdSec
+     *
+     * @var	boolean
+     * @access protected
+     */
+    protected $dmdSecLoaded = FALSE;
+
+    /**
+     * The extension key
+     *
+     * @var	string
+     * @access public
+     */
+    public static $extKey = 'dlf';
+
+    /**
+     * This holds the file ID -> USE concordance
+     * @see _getFileGrps()
+     *
+     * @var	array
+     * @access protected
+     */
+    protected $fileGrps = array ();
+
+    /**
+     * Are the file groups loaded?
+     * @see $fileGrps
+     *
+     * @var	boolean
+     * @access protected
+     */
+    protected $fileGrpsLoaded = FALSE;
+
+    /**
+     * This holds the configuration for all supported metadata encodings
+     * @see loadFormats()
+     *
+     * @var	array
+     * @access protected
+     */
+    protected $formats = array (
+        'METS' => array (
+            'rootElement' => 'mets',
+            'namespaceURI' => 'http://www.loc.gov/METS/',
+        ),
+        'XLINK' => array (
+            'rootElement' => 'xlink',
+            'namespaceURI' => 'http://www.w3.org/1999/xlink',
+        )
+    );
+
+    /**
+     * Are the available metadata formats loaded?
+     * @see $formats
+     *
+     * @var	boolean
+     * @access protected
+     */
+    protected $formatsLoaded = FALSE;
+
+    /**
+     * Are there any fulltext files available?
+     *
+     * @var boolean
+     * @access protected
+     */
+    protected $hasFulltext = FALSE;
+
+    /**
+     * This holds the documents location
+     *
+     * @var	string
+     * @access protected
+     */
+    protected $location = '';
+
+    /**
+     * This holds the logical units
+     *
+     * @var	array
+     * @access protected
+     */
+    protected $logicalUnits = array ();
+
+    /**
+     * This holds the documents' parsed metadata array with their corresponding structMap//div's ID as array key
+     *
+     * @var	array
+     * @access protected
+     */
+    protected $metadataArray = array ();
+
+    /**
+     * Is the metadata array loaded?
+     * @see $metadataArray
+     *
+     * @var	boolean
+     * @access protected
+     */
+    protected $metadataArrayLoaded = FALSE;
+
+    /**
+     * This holds the XML file's METS part as SimpleXMLElement object
+     *
+     * @var	SimpleXMLElement
+     * @access protected
+     */
+    protected $mets;
+
+    /**
+     * The holds the total number of pages
+     *
+     * @var	integer
+     * @access protected
+     */
+    protected $numPages = 0;
+
+    /**
+     * This holds the UID of the parent document or zero if not multi-volumed
+     *
+     * @var	integer
+     * @access protected
+     */
+    protected $parentId = 0;
+
+    /**
+     * This holds the physical structure
+     *
+     * @var	array
+     * @access protected
+     */
+    protected $physicalStructure = array ();
+
+    /**
+     * This holds the physical structure metadata
+     *
+     * @var	array
+     * @access protected
+     */
+    protected $physicalStructureInfo = array ();
+
+    /**
+     * Is the physical structure loaded?
+     * @see $physicalStructure
+     *
+     * @var	boolean
+     * @access protected
+     */
+    protected $physicalStructureLoaded = FALSE;
+
+    /**
+     * This holds the PID of the document or zero if not in database
+     *
+     * @var	integer
+     * @access protected
+     */
+    protected $pid = 0;
+
+    /**
+     * Is the document instantiated successfully?
+     *
+     * @var	boolean
+     * @access protected
+     */
+    protected $ready = FALSE;
+
+    /**
+     * The METS file's record identifier
+     *
+     * @var	string
+     * @access protected
+     */
+    protected $recordId;
+
+    /**
+     * This holds the singleton object of the document
+     *
+     * @var	array (tx_dlf_document)
+     * @access protected
+     */
+    protected static $registry = array ();
+
+    /**
+     * This holds the UID of the root document or zero if not multi-volumed
+     *
+     * @var	integer
+     * @access protected
+     */
+    protected $rootId = 0;
+
+    /**
+     * Is the root id loaded?
+     * @see $rootId
+     *
+     * @var	boolean
+     * @access protected
+     */
+    protected $rootIdLoaded = FALSE;
+
+    /**
+     * This holds the smLinks between logical and physical structMap
+     *
+     * @var	array
+     * @access protected
+     */
+    protected $smLinks = array ('l2p' => array (), 'p2l' => array ());
+
+    /**
+     * Are the smLinks loaded?
+     * @see $smLinks
+     *
+     * @var	boolean
+     * @access protected
+     */
+    protected $smLinksLoaded = FALSE;
+
+    /**
+     * This holds the logical structure
+     *
+     * @var	array
+     * @access protected
+     */
+    protected $tableOfContents = array ();
+
+    /**
+     * Is the table of contents loaded?
+     * @see $tableOfContents
+     *
+     * @var	boolean
+     * @access protected
+     */
+    protected $tableOfContentsLoaded = FALSE;
+
+    /**
+     * This holds the document's thumbnail location.
+     *
+     * @var	string
+     * @access protected
+     */
+    protected $thumbnail = '';
+
+    /**
+     * Is the document's thumbnail location loaded?
+     * @see $thumbnail
+     *
+     * @var	boolean
+     * @access protected
+     */
+    protected $thumbnailLoaded = FALSE;
+
+    /**
+     * This holds the toplevel structure's @ID
+     *
+     * @var	string
+     * @access protected
+     */
+    protected $toplevelId = '';
+
+    /**
+     * This holds the UID or the URL of the document
+     *
+     * @var	mixed
+     * @access protected
+     */
+    protected $uid = 0;
+
+    /**
+     * This holds the whole XML file as SimpleXMLElement object
+     *
+     * @var	SimpleXMLElement
+     * @access protected
+     */
+    protected $xml;
+
+    /**
+     * This clears the static registry to prevent memory exhaustion
+     *
+     * @access	public
+     *
+     * @return	void
+     */
+    public static function clearRegistry() {
+
+        // Reset registry array.
+        self::$registry = array ();
+
+    }
+
+    /**
+     * This gets the location of a file representing a physical page or track
+     *
+     * @access	public
+     *
+     * @param	string		$id: The @ID attribute of the file node
+     *
+     * @return	string		The file's location as URL
+     */
+    public function getFileLocation($id) {
 
-		if (!empty($id) && ($location = $this->mets->xpath('./mets:fileSec/mets:fileGrp/mets:file[@ID="'.$id.'"]/mets:FLocat[@LOCTYPE="URL"]'))) {
+        if (!empty($id) && ($location = $this->mets->xpath('./mets:fileSec/mets:fileGrp/mets:file[@ID="'.$id.'"]/mets:FLocat[@LOCTYPE="URL"]'))) {
 
-			return (string) $location[0]->attributes('http://www.w3.org/1999/xlink')->href;
+            return (string) $location[0]->attributes('http://www.w3.org/1999/xlink')->href;
 
-		} else {
+        } else {
 
-			if (TYPO3_DLOG) {
+            if (TYPO3_DLOG) {
 
-				\TYPO3\CMS\Core\Utility\GeneralUtility::devLog('[tx_dlf_document->getFileLocation('.$id.')] There is no file node with @ID "'.$id.'"', self::$extKey, SYSLOG_SEVERITY_WARNING);
+                \TYPO3\CMS\Core\Utility\GeneralUtility::devLog('[tx_dlf_document->getFileLocation('.$id.')] There is no file node with @ID "'.$id.'"', self::$extKey, SYSLOG_SEVERITY_WARNING);
 
-			}
+            }
 
-			return '';
+            return '';
 
-		}
+        }
 
-	}
+    }
 
-	/**
-	 * This gets the MIME type of a file representing a physical page or track
-	 *
-	 * @access	public
-	 *
-	 * @param	string		$id: The @ID attribute of the file node
-	 *
-	 * @return	string		The file's MIME type
-	 */
-	public function getFileMimeType($id) {
+    /**
+     * This gets the MIME type of a file representing a physical page or track
+     *
+     * @access	public
+     *
+     * @param	string		$id: The @ID attribute of the file node
+     *
+     * @return	string		The file's MIME type
+     */
+    public function getFileMimeType($id) {
 
-		if (!empty($id) && ($mimetype = $this->mets->xpath('./mets:fileSec/mets:fileGrp/mets:file[@ID="'.$id.'"]/@MIMETYPE'))) {
+        if (!empty($id) && ($mimetype = $this->mets->xpath('./mets:fileSec/mets:fileGrp/mets:file[@ID="'.$id.'"]/@MIMETYPE'))) {
 
-			return (string) $mimetype[0];
+            return (string) $mimetype[0];
 
-		} else {
+        } else {
 
-			if (TYPO3_DLOG) {
+            if (TYPO3_DLOG) {
 
-				\TYPO3\CMS\Core\Utility\GeneralUtility::devLog('[tx_dlf_document->getFileMimeType('.$id.')] There is no file node with @ID "'.$id.'" or no MIME type specified', self::$extKey, SYSLOG_SEVERITY_WARNING);
+                \TYPO3\CMS\Core\Utility\GeneralUtility::devLog('[tx_dlf_document->getFileMimeType('.$id.')] There is no file node with @ID "'.$id.'" or no MIME type specified', self::$extKey, SYSLOG_SEVERITY_WARNING);
 
-			}
+            }
 
-			return '';
+            return '';
 
-		}
+        }
 
-	}
+    }
 
-	/**
-	 * This is a singleton class, thus an instance must be created by this method
-	 *
-	 * @access	public
-	 *
-	 * @param	mixed		$uid: The unique identifier of the document to parse or URL of XML file
-	 * @param	integer		$pid: If > 0, then only document with this PID gets loaded
-	 * @param	boolean		$forceReload: Force reloading the document instead of returning the cached instance
-	 *
-	 * @return	&tx_dlf_document		Instance of this class
-	 */
-	public static function &getInstance($uid, $pid = 0, $forceReload = FALSE) {
+    /**
+     * This is a singleton class, thus an instance must be created by this method
+     *
+     * @access	public
+     *
+     * @param	mixed		$uid: The unique identifier of the document to parse or URL of XML file
+     * @param	integer		$pid: If > 0, then only document with this PID gets loaded
+     * @param	boolean		$forceReload: Force reloading the document instead of returning the cached instance
+     *
+     * @return	&tx_dlf_document		Instance of this class
+     */
+    public static function &getInstance($uid, $pid = 0, $forceReload = FALSE) {
 
-		// Sanitize input.
-		$pid = max(intval($pid), 0);
+        // Sanitize input.
+        $pid = max(intval($pid), 0);
 
-		if (!$forceReload) {
+        if (!$forceReload) {
 
-			$regObj = md5($uid);
+            $regObj = md5($uid);
 
-			if (is_object(self::$registry[$regObj]) && self::$registry[$regObj] instanceof self) {
+            if (is_object(self::$registry[$regObj]) && self::$registry[$regObj] instanceof self) {
 
-				// Check if instance has given PID.
-				if (!$pid || !self::$registry[$regObj]->pid || $pid == self::$registry[$regObj]->pid) {
+                // Check if instance has given PID.
+                if (!$pid || !self::$registry[$regObj]->pid || $pid == self::$registry[$regObj]->pid) {
 
-					// Return singleton instance if available.
-					return self::$registry[$regObj];
+                    // Return singleton instance if available.
+                    return self::$registry[$regObj];
 
-				}
+                }
 
-			} else {
+            } else {
 
-				// Check the user's session...
-				$sessionData = tx_dlf_helper::loadFromSession(get_called_class());
+                // Check the user's session...
+                $sessionData = tx_dlf_helper::loadFromSession(get_called_class());
 
-				if (is_object($sessionData[$regObj]) && $sessionData[$regObj] instanceof self) {
+                if (is_object($sessionData[$regObj]) && $sessionData[$regObj] instanceof self) {
 
-					// Check if instance has given PID.
-					if (!$pid || !$sessionData[$regObj]->pid || $pid == $sessionData[$regObj]->pid) {
+                    // Check if instance has given PID.
+                    if (!$pid || !$sessionData[$regObj]->pid || $pid == $sessionData[$regObj]->pid) {
 
-						// ...and restore registry.
-						self::$registry[$regObj] = $sessionData[$regObj];
+                        // ...and restore registry.
+                        self::$registry[$regObj] = $sessionData[$regObj];
 
-						return self::$registry[$regObj];
+                        return self::$registry[$regObj];
 
-					}
+                    }
 
-				}
+                }
 
-			}
+            }
 
-		}
+        }
 
-		// Create new instance...
-		$instance = new self($uid, $pid);
+        // Create new instance...
+        $instance = new self($uid, $pid);
 
-		// ...and save it to registry.
-		if ($instance->ready) {
+        // ...and save it to registry.
+        if ($instance->ready) {
 
-			self::$registry[md5($instance->uid)] = $instance;
+            self::$registry[md5($instance->uid)] = $instance;
 
-			if ($instance->uid != $instance->location) {
+            if ($instance->uid != $instance->location) {
 
-				self::$registry[md5($instance->location)] = $instance;
+                self::$registry[md5($instance->location)] = $instance;
 
-			}
+            }
 
-			// Load extension configuration
-			$extConf = unserialize($GLOBALS['TYPO3_CONF_VARS']['EXT']['extConf']['dlf']);
+            // Load extension configuration
+            $extConf = unserialize($GLOBALS['TYPO3_CONF_VARS']['EXT']['extConf']['dlf']);
 
-			// Save registry to session if caching is enabled.
-			if (!empty($extConf['caching'])) {
+            // Save registry to session if caching is enabled.
+            if (!empty($extConf['caching'])) {
 
-				tx_dlf_helper::saveToSession(self::$registry, get_class($instance));
+                tx_dlf_helper::saveToSession(self::$registry, get_class($instance));
 
-			}
+            }
 
-		}
+        }
 
-		// Return new instance.
-		return $instance;
+        // Return new instance.
+        return $instance;
 
-	}
+    }
 
-	/**
-	 * This gets details about a logical structure element
-	 *
-	 * @access	public
-	 *
-	 * @param	string		$id: The @ID attribute of the logical structure node
-	 * @param	boolean		$recursive: Whether to include the child elements
-	 *
-	 * @return	array		Array of the element's id, label, type and physical page indexes/mptr link
-	 */
-	public function getLogicalStructure($id, $recursive = FALSE) {
+    /**
+     * This gets details about a logical structure element
+     *
+     * @access	public
+     *
+     * @param	string		$id: The @ID attribute of the logical structure node
+     * @param	boolean		$recursive: Whether to include the child elements
+     *
+     * @return	array		Array of the element's id, label, type and physical page indexes/mptr link
+     */
+    public function getLogicalStructure($id, $recursive = FALSE) {
 
-		$details = array ();
+        $details = array ();
 
-		// Is the requested logical unit already loaded?
-		if (!$recursive && !empty($this->logicalUnits[$id])) {
+        // Is the requested logical unit already loaded?
+        if (!$recursive && !empty($this->logicalUnits[$id])) {
 
-			// Yes. Return it.
-			return $this->logicalUnits[$id];
+            // Yes. Return it.
+            return $this->logicalUnits[$id];
 
-		} elseif (!empty($id)) {
+        } elseif (!empty($id)) {
 
-			// Get specified logical unit.
-			$divs = $this->mets->xpath('./mets:structMap[@TYPE="LOGICAL"]//mets:div[@ID="'.$id.'"]');
+            // Get specified logical unit.
+            $divs = $this->mets->xpath('./mets:structMap[@TYPE="LOGICAL"]//mets:div[@ID="'.$id.'"]');
 
-		} else {
+        } else {
 
-			// Get all logical units at top level.
-			$divs = $this->mets->xpath('./mets:structMap[@TYPE="LOGICAL"]/mets:div');
+            // Get all logical units at top level.
+            $divs = $this->mets->xpath('./mets:structMap[@TYPE="LOGICAL"]/mets:div');
 
-		}
+        }
 
-		if (!empty($divs)) {
+        if (!empty($divs)) {
 
-			if (!$recursive) {
+            if (!$recursive) {
 
-				// Get the details for the first xpath hit.
-				$details = $this->getLogicalStructureInfo($divs[0]);
+                // Get the details for the first xpath hit.
+                $details = $this->getLogicalStructureInfo($divs[0]);
 
-			} else {
+            } else {
 
-				// Walk the logical structure recursively and fill the whole table of contents.
-				foreach ($divs as $div) {
+                // Walk the logical structure recursively and fill the whole table of contents.
+                foreach ($divs as $div) {
 
-					$this->tableOfContents[] = $this->getLogicalStructureInfo($div, TRUE);
+                    $this->tableOfContents[] = $this->getLogicalStructureInfo($div, TRUE);
 
-				}
+                }
 
-			}
+            }
 
-		}
+        }
 
-		return $details;
+        return $details;
 
-	}
+    }
 
-	/**
-	 * This gets details about a logical structure element
-	 *
-	 * @access	protected
-	 *
-	 * @param	SimpleXMLElement		$structure: The logical structure node
-	 * @param	boolean		$recursive: Whether to include the child elements
-	 *
-	 * @return	array		Array of the element's id, label, type and physical page indexes/mptr link
-	 */
-	protected function getLogicalStructureInfo(SimpleXMLElement $structure, $recursive = FALSE) {
+    /**
+     * This gets details about a logical structure element
+     *
+     * @access	protected
+     *
+     * @param	SimpleXMLElement		$structure: The logical structure node
+     * @param	boolean		$recursive: Whether to include the child elements
+     *
+     * @return	array		Array of the element's id, label, type and physical page indexes/mptr link
+     */
+    protected function getLogicalStructureInfo(SimpleXMLElement $structure, $recursive = FALSE) {
 
-		// Get attributes.
-		foreach ($structure->attributes() as $attribute => $value) {
+        // Get attributes.
+        foreach ($structure->attributes() as $attribute => $value) {
 
-			$attributes[$attribute] = (string) $value;
+            $attributes[$attribute] = (string) $value;
 
-		}
+        }
 
-		// Load plugin configuration.
-		$extConf = unserialize($GLOBALS['TYPO3_CONF_VARS']['EXT']['extConf'][self::$extKey]);
+        // Load plugin configuration.
+        $extConf = unserialize($GLOBALS['TYPO3_CONF_VARS']['EXT']['extConf'][self::$extKey]);
 
-		// Extract identity information.
-		$details = array ();
+        // Extract identity information.
+        $details = array ();
 
-		$details['id'] = $attributes['ID'];
+        $details['id'] = $attributes['ID'];
 
-		$details['dmdId'] = (isset($attributes['DMDID']) ?  $attributes['DMDID'] : '');
+        $details['dmdId'] = (isset($attributes['DMDID']) ?  $attributes['DMDID'] : '');
 
-		$details['label'] = (isset($attributes['LABEL']) ? $attributes['LABEL'] : '');
+        $details['label'] = (isset($attributes['LABEL']) ? $attributes['LABEL'] : '');
 
-		$details['orderlabel'] = (isset($attributes['ORDERLABEL']) ? $attributes['ORDERLABEL'] : '');
+        $details['orderlabel'] = (isset($attributes['ORDERLABEL']) ? $attributes['ORDERLABEL'] : '');
 
-		$details['contentIds'] = (isset($attributes['CONTENTIDS']) ? $attributes['CONTENTIDS'] : '');
+        $details['contentIds'] = (isset($attributes['CONTENTIDS']) ? $attributes['CONTENTIDS'] : '');
 
-		$details['volume'] = '';
+        $details['volume'] = '';
 
-		// Set volume information only if no label is set and this is the toplevel structure element.
-		if (empty($details['label']) && $details['id'] == $this->_getToplevelId()) {
+        // Set volume information only if no label is set and this is the toplevel structure element.
+        if (empty($details['label']) && $details['id'] == $this->_getToplevelId()) {
 
-			$metadata = $this->getMetadata($details['id']);
+            $metadata = $this->getMetadata($details['id']);
 
-			if (!empty($metadata['volume'][0])) {
+            if (!empty($metadata['volume'][0])) {
 
-				$details['volume'] = $metadata['volume'][0];
+                $details['volume'] = $metadata['volume'][0];
 
-			}
+            }
 
-		}
+        }
 
-		$details['pagination'] = '';
+        $details['pagination'] = '';
 
-		$details['type'] = $attributes['TYPE'];
+        $details['type'] = $attributes['TYPE'];
 
-		$details['thumbnailId'] = '';
+        $details['thumbnailId'] = '';
 
-		// Load smLinks.
-		$this->_getSmLinks();
+        // Load smLinks.
+        $this->_getSmLinks();
 
-		// Load physical structure.
-		$this->_getPhysicalStructure();
+        // Load physical structure.
+        $this->_getPhysicalStructure();
 
-		// Get the physical page or external file this structure element is pointing at.
-		$details['points'] = '';
+        // Get the physical page or external file this structure element is pointing at.
+        $details['points'] = '';
 
-		// Is there a mptr node?
-		if (count($structure->children('http://www.loc.gov/METS/')->mptr)) {
+        // Is there a mptr node?
+        if (count($structure->children('http://www.loc.gov/METS/')->mptr)) {
 
-			// Yes. Get the file reference.
-			$details['points'] = (string) $structure->children('http://www.loc.gov/METS/')->mptr[0]->attributes('http://www.w3.org/1999/xlink')->href;
+            // Yes. Get the file reference.
+            $details['points'] = (string) $structure->children('http://www.loc.gov/METS/')->mptr[0]->attributes('http://www.w3.org/1999/xlink')->href;
 
-		// Are there any physical elements and is this logical unit linked to at least one of them?
-		} elseif (!empty($this->physicalStructure) && array_key_exists($details['id'], $this->smLinks['l2p'])) {
+        // Are there any physical elements and is this logical unit linked to at least one of them?
+        } elseif (!empty($this->physicalStructure) && array_key_exists($details['id'], $this->smLinks['l2p'])) {
 
-			$details['points'] = max(intval(array_search($this->smLinks['l2p'][$details['id']][0], $this->physicalStructure, TRUE)), 1);
+            $details['points'] = max(intval(array_search($this->smLinks['l2p'][$details['id']][0], $this->physicalStructure, TRUE)), 1);
 
-			if (!empty($this->physicalStructureInfo[$this->smLinks['l2p'][$details['id']][0]]['files'][$extConf['fileGrpThumbs']])) {
+            if (!empty($this->physicalStructureInfo[$this->smLinks['l2p'][$details['id']][0]]['files'][$extConf['fileGrpThumbs']])) {
 
-				$details['thumbnailId'] = $this->physicalStructureInfo[$this->smLinks['l2p'][$details['id']][0]]['files'][$extConf['fileGrpThumbs']];
+                $details['thumbnailId'] = $this->physicalStructureInfo[$this->smLinks['l2p'][$details['id']][0]]['files'][$extConf['fileGrpThumbs']];
 
-			}
+            }
 
-			// Get page/track number of the first page/track related to this structure element.
-			$details['pagination'] = $this->physicalStructureInfo[$this->smLinks['l2p'][$details['id']][0]]['orderlabel'];
+            // Get page/track number of the first page/track related to this structure element.
+            $details['pagination'] = $this->physicalStructureInfo[$this->smLinks['l2p'][$details['id']][0]]['orderlabel'];
 
-		// Is this the toplevel structure element?
-		} elseif ($details['id'] == $this->_getToplevelId()) {
+        // Is this the toplevel structure element?
+        } elseif ($details['id'] == $this->_getToplevelId()) {
 
-			// Yes. Point to itself.
-			$details['points'] = 1;
+            // Yes. Point to itself.
+            $details['points'] = 1;
 
-			if (!empty($this->physicalStructure) && !empty($this->physicalStructureInfo[$this->physicalStructure[1]]['files'][$extConf['fileGrpThumbs']])) {
+            if (!empty($this->physicalStructure) && !empty($this->physicalStructureInfo[$this->physicalStructure[1]]['files'][$extConf['fileGrpThumbs']])) {
 
-				$details['thumbnailId'] = $this->physicalStructureInfo[$this->physicalStructure[1]]['files'][$extConf['fileGrpThumbs']];
+                $details['thumbnailId'] = $this->physicalStructureInfo[$this->physicalStructure[1]]['files'][$extConf['fileGrpThumbs']];
 
-			}
+            }
 
-		}
+        }
 
-		// Get the files this structure element is pointing at.
-		$details['files'] = array ();
+        // Get the files this structure element is pointing at.
+        $details['files'] = array ();
 
-		$fileUse = $this->_getFileGrps();
+        $fileUse = $this->_getFileGrps();
 
-		// Get the file representations from fileSec node.
-		foreach ($structure->children('http://www.loc.gov/METS/')->fptr as $fptr) {
+        // Get the file representations from fileSec node.
+        foreach ($structure->children('http://www.loc.gov/METS/')->fptr as $fptr) {
 
-			// Check if file has valid @USE attribute.
-			if (!empty($fileUse[(string) $fptr->attributes()->FILEID])) {
+            // Check if file has valid @USE attribute.
+            if (!empty($fileUse[(string) $fptr->attributes()->FILEID])) {
 
-				$details['files'][$fileUse[(string) $fptr->attributes()->FILEID]] = (string) $fptr->attributes()->FILEID;
+                $details['files'][$fileUse[(string) $fptr->attributes()->FILEID]] = (string) $fptr->attributes()->FILEID;
 
-			}
+            }
 
-		}
+        }
 
-		// Keep for later usage.
-		$this->logicalUnits[$details['id']] = $details;
+        // Keep for later usage.
+        $this->logicalUnits[$details['id']] = $details;
 
-		// Walk the structure recursively? And are there any children of the current element?
-		if ($recursive && count($structure->children('http://www.loc.gov/METS/')->div)) {
+        // Walk the structure recursively? And are there any children of the current element?
+        if ($recursive && count($structure->children('http://www.loc.gov/METS/')->div)) {
 
-			$details['children'] = array ();
+            $details['children'] = array ();
 
-			foreach ($structure->children('http://www.loc.gov/METS/')->div as $child) {
+            foreach ($structure->children('http://www.loc.gov/METS/')->div as $child) {
 
-				// Repeat for all children.
-				$details['children'][] = $this->getLogicalStructureInfo($child, TRUE);
+                // Repeat for all children.
+                $details['children'][] = $this->getLogicalStructureInfo($child, TRUE);
 
-			}
+            }
 
-		}
+        }
 
-		return $details;
+        return $details;
 
-	}
+    }
 
-	/**
-	 * This extracts all the metadata for a logical structure node
-	 *
-	 * @access	public
-	 *
-	 * @param	string		$id: The @ID attribute of the logical structure node
-	 * @param	integer		$cPid: The PID for the metadata definitions
-	 * 						(defaults to $this->cPid or $this->pid)
-	 *
-	 * @return	array		The logical structure node's parsed metadata array
-	 */
-	public function getMetadata($id, $cPid = 0) {
+    /**
+     * This extracts all the metadata for a logical structure node
+     *
+     * @access	public
+     *
+     * @param	string		$id: The @ID attribute of the logical structure node
+     * @param	integer		$cPid: The PID for the metadata definitions
+     * 						(defaults to $this->cPid or $this->pid)
+     *
+     * @return	array		The logical structure node's parsed metadata array
+     */
+    public function getMetadata($id, $cPid = 0) {
 
-		// Save parameter for logging purposes.
-		$_cPid = $cPid;
+        // Save parameter for logging purposes.
+        $_cPid = $cPid;
 
-		// Make sure $cPid is a non-negative integer.
-		$cPid = max(intval($cPid), 0);
+        // Make sure $cPid is a non-negative integer.
+        $cPid = max(intval($cPid), 0);
 
-		// If $cPid is not given, try to get it elsewhere.
-		if (!$cPid && ($this->cPid || $this->pid)) {
+        // If $cPid is not given, try to get it elsewhere.
+        if (!$cPid && ($this->cPid || $this->pid)) {
 
-			// Retain current PID.
-			$cPid = ($this->cPid ? $this->cPid : $this->pid);
+            // Retain current PID.
+            $cPid = ($this->cPid ? $this->cPid : $this->pid);
 
-		} elseif (!$cPid) {
+        } elseif (!$cPid) {
 
-			if (TYPO3_DLOG) {
+            if (TYPO3_DLOG) {
 
-				\TYPO3\CMS\Core\Utility\GeneralUtility::devLog('[tx_dlf_document->getMetadata('.$id.', '.$_cPid.')] Invalid PID "'.$cPid.'" for metadata definitions', self::$extKey, SYSLOG_SEVERITY_ERROR);
+                \TYPO3\CMS\Core\Utility\GeneralUtility::devLog('[tx_dlf_document->getMetadata('.$id.', '.$_cPid.')] Invalid PID "'.$cPid.'" for metadata definitions', self::$extKey, SYSLOG_SEVERITY_ERROR);
 
-			}
+            }
 
-			return array ();
+            return array ();
 
-		}
+        }
 
-		// Get metadata from parsed metadata array if available.
-		if (!empty($this->metadataArray[$id]) && $this->metadataArray[0] == $cPid) {
+        // Get metadata from parsed metadata array if available.
+        if (!empty($this->metadataArray[$id]) && $this->metadataArray[0] == $cPid) {
 
-			return $this->metadataArray[$id];
+            return $this->metadataArray[$id];
 
-		}
+        }
 
-		// Initialize metadata array with empty values.
-		$metadata = array (
-			'title' => array (),
-			'title_sorting' => array (),
-			'author' => array (),
-			'place' => array (),
-			'year' => array (),
-			'prod_id' => array (),
-			'record_id' => array (),
-			'opac_id' => array (),
-			'union_id' => array (),
-			'urn' => array (),
-			'purl' => array (),
-			'type' => array (),
-			'volume' => array (),
-			'volume_sorting' => array (),
-			'collection' => array (),
-			'owner' => array (),
-		);
+        // Initialize metadata array with empty values.
+        $metadata = array (
+            'title' => array (),
+            'title_sorting' => array (),
+            'author' => array (),
+            'place' => array (),
+            'year' => array (),
+            'prod_id' => array (),
+            'record_id' => array (),
+            'opac_id' => array (),
+            'union_id' => array (),
+            'urn' => array (),
+            'purl' => array (),
+            'type' => array (),
+            'volume' => array (),
+            'volume_sorting' => array (),
+            'collection' => array (),
+            'owner' => array (),
+        );
 
-		// Get the logical structure node's DMDID.
-		if (!empty($this->logicalUnits[$id])) {
+        // Get the logical structure node's DMDID.
+        if (!empty($this->logicalUnits[$id])) {
 
-			$dmdId = $this->logicalUnits[$id]['dmdId'];
+            $dmdId = $this->logicalUnits[$id]['dmdId'];
 
-		} else {
+        } else {
 
-			$dmdId = $this->mets->xpath('./mets:structMap[@TYPE="LOGICAL"]//mets:div[@ID="'.$id.'"]/@DMDID');
+            $dmdId = $this->mets->xpath('./mets:structMap[@TYPE="LOGICAL"]//mets:div[@ID="'.$id.'"]/@DMDID');
 
-			$dmdId = (string) $dmdId[0];
+            $dmdId = (string) $dmdId[0];
 
-		}
+        }
 
-		if (!empty($dmdId)) {
+        if (!empty($dmdId)) {
 
-			// Load available metadata formats and dmdSecs.
-			$this->loadFormats();
+            // Load available metadata formats and dmdSecs.
+            $this->loadFormats();
 
-			$this->_getDmdSec();
+            $this->_getDmdSec();
 
-			// Is this metadata format supported?
-			if (!empty($this->formats[$this->dmdSec[$dmdId]['type']])) {
+            // Is this metadata format supported?
+            if (!empty($this->formats[$this->dmdSec[$dmdId]['type']])) {
 
-				if (!empty($this->formats[$this->dmdSec[$dmdId]['type']]['class'])) {
+                if (!empty($this->formats[$this->dmdSec[$dmdId]['type']]['class'])) {
 
-					$class = $this->formats[$this->dmdSec[$dmdId]['type']]['class'];
+                    $class = $this->formats[$this->dmdSec[$dmdId]['type']]['class'];
 
-					// Get the metadata from class.
-					if (class_exists($class) && ($obj = \TYPO3\CMS\Core\Utility\GeneralUtility::makeInstance($class)) instanceof tx_dlf_format) {
+                    // Get the metadata from class.
+                    if (class_exists($class) && ($obj = \TYPO3\CMS\Core\Utility\GeneralUtility::makeInstance($class)) instanceof tx_dlf_format) {
 
-						$obj->extractMetadata($this->dmdSec[$dmdId]['xml'], $metadata);
+                        $obj->extractMetadata($this->dmdSec[$dmdId]['xml'], $metadata);
 
-					} else {
+                    } else {
 
-						if (TYPO3_DLOG) {
+                        if (TYPO3_DLOG) {
 
-							\TYPO3\CMS\Core\Utility\GeneralUtility::devLog('[tx_dlf_document->getMetadata('.$id.', '.$_cPid.')] Invalid class/method "'.$class.'->extractMetadata()" for metadata format "'.$this->dmdSec[$dmdId]['type'].'"', self::$extKey, SYSLOG_SEVERITY_WARNING);
+                            \TYPO3\CMS\Core\Utility\GeneralUtility::devLog('[tx_dlf_document->getMetadata('.$id.', '.$_cPid.')] Invalid class/method "'.$class.'->extractMetadata()" for metadata format "'.$this->dmdSec[$dmdId]['type'].'"', self::$extKey, SYSLOG_SEVERITY_WARNING);
 
-						}
+                        }
 
-					}
+                    }
 
-				}
+                }
 
-			} else {
+            } else {
 
-				if (TYPO3_DLOG) {
+                if (TYPO3_DLOG) {
 
-					\TYPO3\CMS\Core\Utility\GeneralUtility::devLog('[tx_dlf_document->getMetadata('.$id.', '.$_cPid.')] Unsupported metadata format "'.$this->dmdSec[$dmdId]['type'].'" in dmdSec with @ID "'.$dmdId.'"', self::$extKey, SYSLOG_SEVERITY_WARNING);
+                    \TYPO3\CMS\Core\Utility\GeneralUtility::devLog('[tx_dlf_document->getMetadata('.$id.', '.$_cPid.')] Unsupported metadata format "'.$this->dmdSec[$dmdId]['type'].'" in dmdSec with @ID "'.$dmdId.'"', self::$extKey, SYSLOG_SEVERITY_WARNING);
 
-				}
+                }
 
-				return array ();
+                return array ();
 
-			}
+            }
 
-			// Get the structure's type.
-			if (!empty($this->logicalUnits[$id])) {
+            // Get the structure's type.
+            if (!empty($this->logicalUnits[$id])) {
 
-				$metadata['type'] = array ($this->logicalUnits[$id]['type']);
+                $metadata['type'] = array ($this->logicalUnits[$id]['type']);
 
-			} else {
+            } else {
 
-				$struct = $this->mets->xpath('./mets:structMap[@TYPE="LOGICAL"]//mets:div[@ID="'.$id.'"]/@TYPE');
+                $struct = $this->mets->xpath('./mets:structMap[@TYPE="LOGICAL"]//mets:div[@ID="'.$id.'"]/@TYPE');
 
-				$metadata['type'] = array ((string) $struct[0]);
+                $metadata['type'] = array ((string) $struct[0]);
 
-			}
+            }
 
-			// Get the additional metadata from database.
-			$result = $GLOBALS['TYPO3_DB']->exec_SELECTquery(
-				'tx_dlf_metadata.index_name AS index_name,tx_dlf_metadataformat.xpath AS xpath,tx_dlf_metadataformat.xpath_sorting AS xpath_sorting,tx_dlf_metadata.is_sortable AS is_sortable,tx_dlf_metadata.default_value AS default_value,tx_dlf_metadata.format AS format',
-				'tx_dlf_metadata,tx_dlf_metadataformat,tx_dlf_formats',
-				'tx_dlf_metadata.pid='.$cPid.' AND tx_dlf_metadataformat.pid='.$cPid.' AND ((tx_dlf_metadata.uid=tx_dlf_metadataformat.parent_id AND tx_dlf_metadataformat.encoded=tx_dlf_formats.uid AND tx_dlf_formats.type='.$GLOBALS['TYPO3_DB']->fullQuoteStr($this->dmdSec[$dmdId]['type'], 'tx_dlf_formats').') OR tx_dlf_metadata.format=0)'.tx_dlf_helper::whereClause('tx_dlf_metadata', TRUE).tx_dlf_helper::whereClause('tx_dlf_metadataformat').tx_dlf_helper::whereClause('tx_dlf_formats'),
-				'',
-				'',
-				''
-			);
+            // Get the additional metadata from database.
+            $result = $GLOBALS['TYPO3_DB']->exec_SELECTquery(
+                'tx_dlf_metadata.index_name AS index_name,tx_dlf_metadataformat.xpath AS xpath,tx_dlf_metadataformat.xpath_sorting AS xpath_sorting,tx_dlf_metadata.is_sortable AS is_sortable,tx_dlf_metadata.default_value AS default_value,tx_dlf_metadata.format AS format',
+                'tx_dlf_metadata,tx_dlf_metadataformat,tx_dlf_formats',
+                'tx_dlf_metadata.pid='.$cPid.' AND tx_dlf_metadataformat.pid='.$cPid.' AND ((tx_dlf_metadata.uid=tx_dlf_metadataformat.parent_id AND tx_dlf_metadataformat.encoded=tx_dlf_formats.uid AND tx_dlf_formats.type='.$GLOBALS['TYPO3_DB']->fullQuoteStr($this->dmdSec[$dmdId]['type'], 'tx_dlf_formats').') OR tx_dlf_metadata.format=0)'.tx_dlf_helper::whereClause('tx_dlf_metadata', TRUE).tx_dlf_helper::whereClause('tx_dlf_metadataformat').tx_dlf_helper::whereClause('tx_dlf_formats'),
+                '',
+                '',
+                ''
+            );
 
-			// We need a DOMDocument here, because SimpleXML doesn't support XPath functions properly.
-			$domNode = dom_import_simplexml($this->dmdSec[$dmdId]['xml']);
+            // We need a DOMDocument here, because SimpleXML doesn't support XPath functions properly.
+            $domNode = dom_import_simplexml($this->dmdSec[$dmdId]['xml']);
 
-			$domXPath = new DOMXPath($domNode->ownerDocument);
+            $domXPath = new DOMXPath($domNode->ownerDocument);
 
-			$this->registerNamespaces($domXPath);
+            $this->registerNamespaces($domXPath);
 
-			// OK, now make the XPath queries.
-			while ($resArray = $GLOBALS['TYPO3_DB']->sql_fetch_assoc($result)) {
+            // OK, now make the XPath queries.
+            while ($resArray = $GLOBALS['TYPO3_DB']->sql_fetch_assoc($result)) {
 
-				// Set metadata field's value(s).
-				if ($resArray['format'] > 0 && !empty($resArray['xpath']) && ($values = $domXPath->evaluate($resArray['xpath'], $domNode))) {
+                // Set metadata field's value(s).
+                if ($resArray['format'] > 0 && !empty($resArray['xpath']) && ($values = $domXPath->evaluate($resArray['xpath'], $domNode))) {
 
-					if ($values instanceof DOMNodeList && $values->length > 0) {
+                    if ($values instanceof DOMNodeList && $values->length > 0) {
 
-						$metadata[$resArray['index_name']] = array ();
+                        $metadata[$resArray['index_name']] = array ();
 
-						foreach ($values as $value) {
+                        foreach ($values as $value) {
 
-							$metadata[$resArray['index_name']][] = trim((string) $value->nodeValue);
+                            $metadata[$resArray['index_name']][] = trim((string) $value->nodeValue);
 
-						}
+                        }
 
-					} elseif (!($values instanceof DOMNodeList)) {
+                    } elseif (!($values instanceof DOMNodeList)) {
 
-						$metadata[$resArray['index_name']] = array (trim((string) $values));
+                        $metadata[$resArray['index_name']] = array (trim((string) $values));
 
-					}
+                    }
 
-				}
+                }
 
-				// Set default value if applicable.
-				if (empty($metadata[$resArray['index_name']][0]) && $resArray['default_value']) {
+                // Set default value if applicable.
+                if (empty($metadata[$resArray['index_name']][0]) && $resArray['default_value']) {
 
-					$metadata[$resArray['index_name']] = array ($resArray['default_value']);
+                    $metadata[$resArray['index_name']] = array ($resArray['default_value']);
 
-				}
+                }
 
-				// Set sorting value if applicable.
-				if (!empty($metadata[$resArray['index_name']]) && $resArray['is_sortable']) {
+                // Set sorting value if applicable.
+                if (!empty($metadata[$resArray['index_name']]) && $resArray['is_sortable']) {
 
-					if ($resArray['format'] > 0 && !empty($resArray['xpath_sorting']) && ($values = $domXPath->evaluate($resArray['xpath_sorting'], $domNode))) {
+                    if ($resArray['format'] > 0 && !empty($resArray['xpath_sorting']) && ($values = $domXPath->evaluate($resArray['xpath_sorting'], $domNode))) {
 
-						if ($values instanceof DOMNodeList && $values->length > 0) {
+                        if ($values instanceof DOMNodeList && $values->length > 0) {
 
-							$metadata[$resArray['index_name'].'_sorting'][0] = trim((string) $values->item(0)->nodeValue);
+                            $metadata[$resArray['index_name'].'_sorting'][0] = trim((string) $values->item(0)->nodeValue);
 
-						} elseif (!($values instanceof DOMNodeList)) {
+                        } elseif (!($values instanceof DOMNodeList)) {
 
-							$metadata[$resArray['index_name'].'_sorting'][0] = trim((string) $values);
+                            $metadata[$resArray['index_name'].'_sorting'][0] = trim((string) $values);
 
-						}
+                        }
 
-					}
+                    }
 
-					if (empty($metadata[$resArray['index_name'].'_sorting'][0])) {
+                    if (empty($metadata[$resArray['index_name'].'_sorting'][0])) {
 
-						$metadata[$resArray['index_name'].'_sorting'][0] = $metadata[$resArray['index_name']][0];
+                        $metadata[$resArray['index_name'].'_sorting'][0] = $metadata[$resArray['index_name']][0];
 
-					}
+                    }
 
-				}
+                }
 
-			}
+            }
 
-			// Set title to empty string if not present.
-			if (empty($metadata['title'][0])) {
+            // Set title to empty string if not present.
+            if (empty($metadata['title'][0])) {
 
-				$metadata['title'][0] = '';
+                $metadata['title'][0] = '';
 
-				$metadata['title_sorting'][0] = '';
+                $metadata['title_sorting'][0] = '';
 
-			}
+            }
 
-		} else {
+        } else {
 
-			// There is no dmdSec for this structure node.
-			return array ();
+            // There is no dmdSec for this structure node.
+            return array ();
 
-		}
+        }
 
-		return $metadata;
+        return $metadata;
 
-	}
+    }
 
-	/**
-	 * This determines a title for the given document
-	 *
-	 * @access	public
-	 *
-	 * @param	integer		$uid: The UID of the document
-	 * @param	boolean		$recursive: Search superior documents for a title, too?
-	 *
-	 * @return	string		The title of the document itself or a parent document
-	 */
-	public static function getTitle($uid, $recursive = FALSE) {
+    /**
+     * This determines a title for the given document
+     *
+     * @access	public
+     *
+     * @param	integer		$uid: The UID of the document
+     * @param	boolean		$recursive: Search superior documents for a title, too?
+     *
+     * @return	string		The title of the document itself or a parent document
+     */
+    public static function getTitle($uid, $recursive = FALSE) {
 
-		// Save parameter for logging purposes.
-		$_uid = $uid;
+        // Save parameter for logging purposes.
+        $_uid = $uid;
 
-		$title = '';
+        $title = '';
 
-		// Sanitize input.
-		$uid = max(intval($uid), 0);
+        // Sanitize input.
+        $uid = max(intval($uid), 0);
 
-		if ($uid) {
+        if ($uid) {
 
-			$result = $GLOBALS['TYPO3_DB']->exec_SELECTquery(
-				'tx_dlf_documents.title,tx_dlf_documents.partof',
-				'tx_dlf_documents',
-				'tx_dlf_documents.uid='.$uid.tx_dlf_helper::whereClause('tx_dlf_documents'),
-				'',
-				'',
-				'1'
-			);
+            $result = $GLOBALS['TYPO3_DB']->exec_SELECTquery(
+                'tx_dlf_documents.title,tx_dlf_documents.partof',
+                'tx_dlf_documents',
+                'tx_dlf_documents.uid='.$uid.tx_dlf_helper::whereClause('tx_dlf_documents'),
+                '',
+                '',
+                '1'
+            );
 
-			if ($GLOBALS['TYPO3_DB']->sql_num_rows($result)) {
+            if ($GLOBALS['TYPO3_DB']->sql_num_rows($result)) {
 
-				// Get title information.
-				list ($title, $partof) = $GLOBALS['TYPO3_DB']->sql_fetch_row($result);
+                // Get title information.
+                list ($title, $partof) = $GLOBALS['TYPO3_DB']->sql_fetch_row($result);
 
-				// Search parent documents recursively for a title?
-				if ($recursive && empty($title) && intval($partof) && $partof != $uid) {
+                // Search parent documents recursively for a title?
+                if ($recursive && empty($title) && intval($partof) && $partof != $uid) {
 
-					$title = self::getTitle($partof, TRUE);
+                    $title = self::getTitle($partof, TRUE);
 
-				}
+                }
 
-			} else {
+            } else {
 
-				if (TYPO3_DLOG) {
+                if (TYPO3_DLOG) {
 
-					\TYPO3\CMS\Core\Utility\GeneralUtility::devLog('[tx_dlf_document->getTitle('.$_uid.', ['.($recursive ? 'TRUE' : 'FALSE').'])] No document with UID "'.$uid.'" found or document not accessible', self::$extKey, SYSLOG_SEVERITY_WARNING);
+                    \TYPO3\CMS\Core\Utility\GeneralUtility::devLog('[tx_dlf_document->getTitle('.$_uid.', ['.($recursive ? 'TRUE' : 'FALSE').'])] No document with UID "'.$uid.'" found or document not accessible', self::$extKey, SYSLOG_SEVERITY_WARNING);
 
-				}
+                }
 
-			}
+            }
 
-		} else {
+        } else {
 
-			if (TYPO3_DLOG) {
+            if (TYPO3_DLOG) {
 
-				\TYPO3\CMS\Core\Utility\GeneralUtility::devLog('[tx_dlf_document->getTitle('.$_uid.', ['.($recursive ? 'TRUE' : 'FALSE').'])] Invalid UID "'.$uid.'" for document', self::$extKey, SYSLOG_SEVERITY_ERROR);
+                \TYPO3\CMS\Core\Utility\GeneralUtility::devLog('[tx_dlf_document->getTitle('.$_uid.', ['.($recursive ? 'TRUE' : 'FALSE').'])] Invalid UID "'.$uid.'" for document', self::$extKey, SYSLOG_SEVERITY_ERROR);
 
-			}
+            }
 
-		}
+        }
 
-		return $title;
+        return $title;
 
-	}
+    }
 
-	/**
-	 * This extracts all the metadata for the toplevel logical structure node
-	 *
-	 * @access	public
-	 *
-	 * @param	integer		$cPid: The PID for the metadata definitions
-	 *
-	 * @return	array		The logical structure node's parsed metadata array
-	 */
-	public function getTitledata($cPid = 0) {
+    /**
+     * This extracts all the metadata for the toplevel logical structure node
+     *
+     * @access	public
+     *
+     * @param	integer		$cPid: The PID for the metadata definitions
+     *
+     * @return	array		The logical structure node's parsed metadata array
+     */
+    public function getTitledata($cPid = 0) {
 
-		$titledata = $this->getMetadata($this->_getToplevelId(), $cPid);
+        $titledata = $this->getMetadata($this->_getToplevelId(), $cPid);
 
-		// Set record identifier for METS file if not present.
-		if (is_array($titledata) && array_key_exists('record_id', $titledata)) {
+        // Set record identifier for METS file if not present.
+        if (is_array($titledata) && array_key_exists('record_id', $titledata)) {
 
-			if (!in_array($this->recordId, $titledata['record_id'])) {
+            if (!in_array($this->recordId, $titledata['record_id'])) {
 
-				array_unshift($titledata['record_id'], $this->recordId);
+                array_unshift($titledata['record_id'], $this->recordId);
 
-			}
+            }
 
-		};
+        };
 
-		return $titledata;
+        return $titledata;
 
-	}
+    }
 
-	/**
-	 * This sets some basic class properties
-	 *
-	 * @access	protected
-	 *
-	 * @return	void
-	 */
-	protected function init() {
+    /**
+     * This sets some basic class properties
+     *
+     * @access	protected
+     *
+     * @return	void
+     */
+    protected function init() {
 
-		// Get METS node from XML file.
-		$this->registerNamespaces($this->xml);
+        // Get METS node from XML file.
+        $this->registerNamespaces($this->xml);
 
-		$mets = $this->xml->xpath('//mets:mets');
+        $mets = $this->xml->xpath('//mets:mets');
 
-		if ($mets) {
+        if ($mets) {
 
-			$this->mets = $mets[0];
+            $this->mets = $mets[0];
 
-			// Register namespaces.
-			$this->registerNamespaces($this->mets);
+            // Register namespaces.
+            $this->registerNamespaces($this->mets);
 
-		} else {
+        } else {
 
-			if (TYPO3_DLOG) {
+            if (TYPO3_DLOG) {
 
-				\TYPO3\CMS\Core\Utility\GeneralUtility::devLog('[tx_dlf_document->init()] No METS part found in document with UID "'.$this->uid.'"', self::$extKey, SYSLOG_SEVERITY_ERROR);
+                \TYPO3\CMS\Core\Utility\GeneralUtility::devLog('[tx_dlf_document->init()] No METS part found in document with UID "'.$this->uid.'"', self::$extKey, SYSLOG_SEVERITY_ERROR);
 
-			}
+            }
 
-		}
+        }
 
-	}
+    }
 
-	/**
-	 * Load XML file from URL
-	 *
-	 * @access	protected
-	 *
-	 * @param	string		$location: The URL of the file to load
-	 *
-	 * @return	boolean		TRUE on success or FALSE on failure
-	 */
-	protected function load($location) {
+    /**
+     * Load XML file from URL
+     *
+     * @access	protected
+     *
+     * @param	string		$location: The URL of the file to load
+     *
+     * @return	boolean		TRUE on success or FALSE on failure
+     */
+    protected function load($location) {
 
-		// Load XML file.
-		if (\TYPO3\CMS\Core\Utility\GeneralUtility::isValidUrl($location)) {
+        // Load XML file.
+        if (\TYPO3\CMS\Core\Utility\GeneralUtility::isValidUrl($location)) {
 
-			// Load extension configuration
-			$extConf = unserialize($GLOBALS['TYPO3_CONF_VARS']['EXT']['extConf']['dlf']);
+            // Load extension configuration
+            $extConf = unserialize($GLOBALS['TYPO3_CONF_VARS']['EXT']['extConf']['dlf']);
 
-			// Set user-agent to identify self when fetching XML data.
-			if (!empty($extConf['useragent'])) {
+            // Set user-agent to identify self when fetching XML data.
+            if (!empty($extConf['useragent'])) {
 
-				@ini_set('user_agent', $extConf['useragent']);
+                @ini_set('user_agent', $extConf['useragent']);
 
-			}
+            }
 
-			// Turn off libxml's error logging.
-			$libxmlErrors = libxml_use_internal_errors(TRUE);
+            // Turn off libxml's error logging.
+            $libxmlErrors = libxml_use_internal_errors(TRUE);
 
-			// Disables the functionality to allow external entities to be loaded when parsing the XML, must be kept
-			$previousValueOfEntityLoader = libxml_disable_entity_loader(TRUE);
+            // Disables the functionality to allow external entities to be loaded when parsing the XML, must be kept
+            $previousValueOfEntityLoader = libxml_disable_entity_loader(TRUE);
 
-			// Load XML from file.
-			$xml = simplexml_load_string(\TYPO3\CMS\Core\Utility\GeneralUtility::getUrl($location));
+            // Load XML from file.
+            $xml = simplexml_load_string(\TYPO3\CMS\Core\Utility\GeneralUtility::getUrl($location));
 
-			// reset entity loader setting
-			libxml_disable_entity_loader($previousValueOfEntityLoader);
+            // reset entity loader setting
+            libxml_disable_entity_loader($previousValueOfEntityLoader);
 
-			// Reset libxml's error logging.
-			libxml_use_internal_errors($libxmlErrors);
+            // Reset libxml's error logging.
+            libxml_use_internal_errors($libxmlErrors);
 
-			// Set some basic properties.
-			if ($xml !== FALSE) {
+            // Set some basic properties.
+            if ($xml !== FALSE) {
 
-				$this->xml = $xml;
+                $this->xml = $xml;
 
-				return TRUE;
+                return TRUE;
 
-			} else {
+            } else {
 
-				if (TYPO3_DLOG) {
+                if (TYPO3_DLOG) {
 
-					\TYPO3\CMS\Core\Utility\GeneralUtility::devLog('[tx_dlf_document->load('.$location.')] Could not load XML file from "'.$location.'"', self::$extKey, SYSLOG_SEVERITY_ERROR);
+                    \TYPO3\CMS\Core\Utility\GeneralUtility::devLog('[tx_dlf_document->load('.$location.')] Could not load XML file from "'.$location.'"', self::$extKey, SYSLOG_SEVERITY_ERROR);
 
-				}
+                }
 
-			}
+            }
 
-		} else {
+        } else {
 
-			if (TYPO3_DLOG) {
+            if (TYPO3_DLOG) {
 
-				\TYPO3\CMS\Core\Utility\GeneralUtility::devLog('[tx_dlf_document->load('.$location.')] Invalid file location "'.$location.'" for document loading', self::$extKey, SYSLOG_SEVERITY_ERROR);
+                \TYPO3\CMS\Core\Utility\GeneralUtility::devLog('[tx_dlf_document->load('.$location.')] Invalid file location "'.$location.'" for document loading', self::$extKey, SYSLOG_SEVERITY_ERROR);
 
-			}
+            }
 
-		}
+        }
 
-		return FALSE;
+        return FALSE;
 
-	}
+    }
 
-	/**
-	 * Register all available data formats
-	 *
-	 * @access	protected
-	 *
-	 * @return	void
-	 */
-	protected function loadFormats() {
+    /**
+     * Register all available data formats
+     *
+     * @access	protected
+     *
+     * @return	void
+     */
+    protected function loadFormats() {
 
-		if (!$this->formatsLoaded) {
+        if (!$this->formatsLoaded) {
 
-			// Get available data formats from database.
-			$result = $GLOBALS['TYPO3_DB']->exec_SELECTquery(
-				'tx_dlf_formats.type AS type,tx_dlf_formats.root AS root,tx_dlf_formats.namespace AS namespace,tx_dlf_formats.class AS class',
-				'tx_dlf_formats',
-				'tx_dlf_formats.pid=0'.tx_dlf_helper::whereClause('tx_dlf_formats'),
-				'',
-				'',
-				''
-			);
+            // Get available data formats from database.
+            $result = $GLOBALS['TYPO3_DB']->exec_SELECTquery(
+                'tx_dlf_formats.type AS type,tx_dlf_formats.root AS root,tx_dlf_formats.namespace AS namespace,tx_dlf_formats.class AS class',
+                'tx_dlf_formats',
+                'tx_dlf_formats.pid=0'.tx_dlf_helper::whereClause('tx_dlf_formats'),
+                '',
+                '',
+                ''
+            );
 
-			while ($resArray = $GLOBALS['TYPO3_DB']->sql_fetch_assoc($result)) {
+            while ($resArray = $GLOBALS['TYPO3_DB']->sql_fetch_assoc($result)) {
 
-				// Update format registry.
-				$this->formats[$resArray['type']] = array (
-					'rootElement' => $resArray['root'],
-					'namespaceURI' => $resArray['namespace'],
-					'class' => $resArray['class']
-				);
+                // Update format registry.
+                $this->formats[$resArray['type']] = array (
+                    'rootElement' => $resArray['root'],
+                    'namespaceURI' => $resArray['namespace'],
+                    'class' => $resArray['class']
+                );
 
-			}
+            }
 
-			$this->formatsLoaded = TRUE;
+            $this->formatsLoaded = TRUE;
 
-		}
+        }
 
-	}
+    }
 
-	/**
-	 * Register all available namespaces for a SimpleXMLElement object
-	 *
-	 * @access	public
-	 *
-	 * @param	SimpleXMLElement|DOMXPath		&$obj: SimpleXMLElement or DOMXPath object
-	 *
-	 * @return	void
-	 */
-	public function registerNamespaces(&$obj) {
+    /**
+     * Register all available namespaces for a SimpleXMLElement object
+     *
+     * @access	public
+     *
+     * @param	SimpleXMLElement|DOMXPath		&$obj: SimpleXMLElement or DOMXPath object
+     *
+     * @return	void
+     */
+    public function registerNamespaces(&$obj) {
 
-		$this->loadFormats();
+        $this->loadFormats();
 
-		// Do we have a SimpleXMLElement or DOMXPath object?
-		if ($obj instanceof SimpleXMLElement) {
+        // Do we have a SimpleXMLElement or DOMXPath object?
+        if ($obj instanceof SimpleXMLElement) {
 
-			$method = 'registerXPathNamespace';
+            $method = 'registerXPathNamespace';
 
-		} elseif ($obj instanceof DOMXPath) {
+        } elseif ($obj instanceof DOMXPath) {
 
-			$method = 'registerNamespace';
+            $method = 'registerNamespace';
 
-		} else {
+        } else {
 
-			if (TYPO3_DLOG) {
+            if (TYPO3_DLOG) {
 
-				\TYPO3\CMS\Core\Utility\GeneralUtility::devLog('[tx_dlf_document->registerNamespaces(['.get_class($obj).'])] Given object is neither a SimpleXMLElement nor a DOMXPath instance', self::$extKey, SYSLOG_SEVERITY_ERROR);
+                \TYPO3\CMS\Core\Utility\GeneralUtility::devLog('[tx_dlf_document->registerNamespaces(['.get_class($obj).'])] Given object is neither a SimpleXMLElement nor a DOMXPath instance', self::$extKey, SYSLOG_SEVERITY_ERROR);
 
-			}
+            }
 
-			return;
+            return;
 
-		}
+        }
 
-		// Register metadata format's namespaces.
-		foreach ($this->formats as $enc => $conf) {
+        // Register metadata format's namespaces.
+        foreach ($this->formats as $enc => $conf) {
 
-			$obj->$method(strtolower($enc), $conf['namespaceURI']);
+            $obj->$method(strtolower($enc), $conf['namespaceURI']);
 
-		}
+        }
 
-	}
+    }
 
-	/**
-	 * This saves the document to the database and index
-	 *
-	 * @access	public
-	 *
-	 * @param	integer		$pid: The PID of the saved record
-	 * @param	integer		$core: The UID of the Solr core for indexing
-	 *
-	 * @return	boolean		TRUE on success or FALSE on failure
-	 */
-	public function save($pid = 0, $core = 0) {
+    /**
+     * This saves the document to the database and index
+     *
+     * @access	public
+     *
+     * @param	integer		$pid: The PID of the saved record
+     * @param	integer		$core: The UID of the Solr core for indexing
+     *
+     * @return	boolean		TRUE on success or FALSE on failure
+     */
+    public function save($pid = 0, $core = 0) {
 
-		// Save parameters for logging purposes.
-		$_pid = $pid;
+        // Save parameters for logging purposes.
+        $_pid = $pid;
 
-		$_core = $core;
+        $_core = $core;
 
-		if (TYPO3_MODE !== 'BE') {
+        if (TYPO3_MODE !== 'BE') {
 
-			if (TYPO3_DLOG) {
+            if (TYPO3_DLOG) {
 
-				\TYPO3\CMS\Core\Utility\GeneralUtility::devLog('[tx_dlf_document->save('.$_pid.', '.$_core.')] Saving a document is only allowed in the backend', self::$extKey, SYSLOG_SEVERITY_ERROR);
+                \TYPO3\CMS\Core\Utility\GeneralUtility::devLog('[tx_dlf_document->save('.$_pid.', '.$_core.')] Saving a document is only allowed in the backend', self::$extKey, SYSLOG_SEVERITY_ERROR);
 
-			}
+            }
 
-			return FALSE;
+            return FALSE;
 
-		}
+        }
 
-		// Make sure $pid is a non-negative integer.
-		$pid = max(intval($pid), 0);
+        // Make sure $pid is a non-negative integer.
+        $pid = max(intval($pid), 0);
 
-		// Make sure $core is a non-negative integer.
-		$core = max(intval($core), 0);
+        // Make sure $core is a non-negative integer.
+        $core = max(intval($core), 0);
 
-		// If $pid is not given, try to get it elsewhere.
-		if (!$pid && $this->pid) {
+        // If $pid is not given, try to get it elsewhere.
+        if (!$pid && $this->pid) {
 
-			// Retain current PID.
-			$pid = $this->pid;
+            // Retain current PID.
+            $pid = $this->pid;
 
-		} elseif (!$pid) {
+        } elseif (!$pid) {
 
-			if (TYPO3_DLOG) {
+            if (TYPO3_DLOG) {
 
-				\TYPO3\CMS\Core\Utility\GeneralUtility::devLog('[tx_dlf_document->save('.$_pid.', '.$_core.')] Invalid PID "'.$pid.'" for document saving', self::$extKey, SYSLOG_SEVERITY_ERROR);
+                \TYPO3\CMS\Core\Utility\GeneralUtility::devLog('[tx_dlf_document->save('.$_pid.', '.$_core.')] Invalid PID "'.$pid.'" for document saving', self::$extKey, SYSLOG_SEVERITY_ERROR);
 
-			}
+            }
 
-			return FALSE;
+            return FALSE;
 
-		}
+        }
 
-		// Set PID for metadata definitions.
-		$this->cPid = $pid;
+        // Set PID for metadata definitions.
+        $this->cPid = $pid;
 
-		// Set UID placeholder if not updating existing record.
-		if ($pid != $this->pid) {
+        // Set UID placeholder if not updating existing record.
+        if ($pid != $this->pid) {
 
-			$this->uid = uniqid('NEW');
+            $this->uid = uniqid('NEW');
 
-		}
+        }
 
-		// Get metadata array.
-		$metadata = $this->getTitledata($pid);
+        // Get metadata array.
+        $metadata = $this->getTitledata($pid);
 
-		// Check for record identifier.
-		if (empty($metadata['record_id'][0])) {
+        // Check for record identifier.
+        if (empty($metadata['record_id'][0])) {
 
-			if (TYPO3_DLOG) {
+            if (TYPO3_DLOG) {
 
-				\TYPO3\CMS\Core\Utility\GeneralUtility::devLog('[tx_dlf_document->save('.$_pid.', '.$_core.')] No record identifier found to avoid duplication', self::$extKey, SYSLOG_SEVERITY_ERROR);
+                \TYPO3\CMS\Core\Utility\GeneralUtility::devLog('[tx_dlf_document->save('.$_pid.', '.$_core.')] No record identifier found to avoid duplication', self::$extKey, SYSLOG_SEVERITY_ERROR);
 
-			}
+            }
 
-			return FALSE;
+            return FALSE;
 
-		}
+        }
 
-		// Load plugin configuration.
-		$conf = unserialize($GLOBALS['TYPO3_CONF_VARS']['EXT']['extConf'][self::$extKey]);
+        // Load plugin configuration.
+        $conf = unserialize($GLOBALS['TYPO3_CONF_VARS']['EXT']['extConf'][self::$extKey]);
 
-		// Get UID for user "_cli_dlf".
-		$result = $GLOBALS['TYPO3_DB']->exec_SELECTquery(
-			'be_users.uid AS uid',
-			'be_users',
-			'username='.$GLOBALS['TYPO3_DB']->fullQuoteStr('_cli_dlf', 'be_users').\TYPO3\CMS\Backend\Utility\BackendUtility::BEenableFields('be_users').\TYPO3\CMS\Backend\Utility\BackendUtility::deleteClause('be_users'),
-			'',
-			'',
-			'1'
-		);
+        // Get UID for user "_cli_dlf".
+        $result = $GLOBALS['TYPO3_DB']->exec_SELECTquery(
+            'be_users.uid AS uid',
+            'be_users',
+            'username='.$GLOBALS['TYPO3_DB']->fullQuoteStr('_cli_dlf', 'be_users').\TYPO3\CMS\Backend\Utility\BackendUtility::BEenableFields('be_users').\TYPO3\CMS\Backend\Utility\BackendUtility::deleteClause('be_users'),
+            '',
+            '',
+            '1'
+        );
 
-		if ($GLOBALS['TYPO3_DB']->sql_num_rows($result)) {
+        if ($GLOBALS['TYPO3_DB']->sql_num_rows($result)) {
 
-			list ($be_user) = $GLOBALS['TYPO3_DB']->sql_fetch_row($result);
+            list ($be_user) = $GLOBALS['TYPO3_DB']->sql_fetch_row($result);
 
-		} else {
+        } else {
 
-			if (TYPO3_DLOG) {
+            if (TYPO3_DLOG) {
 
-				\TYPO3\CMS\Core\Utility\GeneralUtility::devLog('[tx_dlf_document->save('.$_pid.', '.$_core.')] Backend user "_cli_dlf" not found or disabled', self::$extKey, SYSLOG_SEVERITY_ERROR);
+                \TYPO3\CMS\Core\Utility\GeneralUtility::devLog('[tx_dlf_document->save('.$_pid.', '.$_core.')] Backend user "_cli_dlf" not found or disabled', self::$extKey, SYSLOG_SEVERITY_ERROR);
 
-			}
+            }
 
-			return FALSE;
+            return FALSE;
 
-		}
+        }
 
-		// Get UID for structure type.
-		$result = $GLOBALS['TYPO3_DB']->exec_SELECTquery(
-			'tx_dlf_structures.uid AS uid',
-			'tx_dlf_structures',
-			'tx_dlf_structures.pid='.intval($pid).' AND tx_dlf_structures.index_name='.$GLOBALS['TYPO3_DB']->fullQuoteStr($metadata['type'][0], 'tx_dlf_structures').tx_dlf_helper::whereClause('tx_dlf_structures'),
-			'',
-			'',
-			'1'
-		);
+        // Get UID for structure type.
+        $result = $GLOBALS['TYPO3_DB']->exec_SELECTquery(
+            'tx_dlf_structures.uid AS uid',
+            'tx_dlf_structures',
+            'tx_dlf_structures.pid='.intval($pid).' AND tx_dlf_structures.index_name='.$GLOBALS['TYPO3_DB']->fullQuoteStr($metadata['type'][0], 'tx_dlf_structures').tx_dlf_helper::whereClause('tx_dlf_structures'),
+            '',
+            '',
+            '1'
+        );
 
-		if ($GLOBALS['TYPO3_DB']->sql_num_rows($result)) {
+        if ($GLOBALS['TYPO3_DB']->sql_num_rows($result)) {
 
-			list ($structure) = $GLOBALS['TYPO3_DB']->sql_fetch_row($result);
+            list ($structure) = $GLOBALS['TYPO3_DB']->sql_fetch_row($result);
 
-		} else {
+        } else {
 
-			if (TYPO3_DLOG) {
+            if (TYPO3_DLOG) {
 
-				\TYPO3\CMS\Core\Utility\GeneralUtility::devLog('[tx_dlf_document->save('.$_pid.', '.$_core.')] Could not identify document/structure type ' . $GLOBALS['TYPO3_DB']->fullQuoteStr($metadata['type'][0], 'tx_dlf_structures'),
-									       self::$extKey, SYSLOG_SEVERITY_ERROR);
+                \TYPO3\CMS\Core\Utility\GeneralUtility::devLog('[tx_dlf_document->save('.$_pid.', '.$_core.')] Could not identify document/structure type ' . $GLOBALS['TYPO3_DB']->fullQuoteStr($metadata['type'][0], 'tx_dlf_structures'),
+                                            self::$extKey, SYSLOG_SEVERITY_ERROR);
 
-			}
+            }
 
-			return FALSE;
+            return FALSE;
 
-		}
+        }
 
-		$metadata['type'][0] = $structure;
+        $metadata['type'][0] = $structure;
 
-		// Get UIDs for collections.
-		$collections = array ();
+        // Get UIDs for collections.
+        $collections = array ();
 
-		$result = $GLOBALS['TYPO3_DB']->exec_SELECTquery(
-			'tx_dlf_collections.index_name AS index_name,tx_dlf_collections.uid AS uid',
-			'tx_dlf_collections',
-			'tx_dlf_collections.pid='.intval($pid).' AND tx_dlf_collections.cruser_id='.intval($be_user).' AND tx_dlf_collections.fe_cruser_id=0'.tx_dlf_helper::whereClause('tx_dlf_collections'),
-			'',
-			'',
-			''
-		);
+        $result = $GLOBALS['TYPO3_DB']->exec_SELECTquery(
+            'tx_dlf_collections.index_name AS index_name,tx_dlf_collections.uid AS uid',
+            'tx_dlf_collections',
+            'tx_dlf_collections.pid='.intval($pid).' AND tx_dlf_collections.cruser_id='.intval($be_user).' AND tx_dlf_collections.fe_cruser_id=0'.tx_dlf_helper::whereClause('tx_dlf_collections'),
+            '',
+            '',
+            ''
+        );
 
-		for ($i = 0, $j = $GLOBALS['TYPO3_DB']->sql_num_rows($result); $i < $j; $i++) {
+        for ($i = 0, $j = $GLOBALS['TYPO3_DB']->sql_num_rows($result); $i < $j; $i++) {
 
-			$resArray = $GLOBALS['TYPO3_DB']->sql_fetch_assoc($result);
+            $resArray = $GLOBALS['TYPO3_DB']->sql_fetch_assoc($result);
 
-			$collUid[$resArray['index_name']] = $resArray['uid'];
+            $collUid[$resArray['index_name']] = $resArray['uid'];
 
-		}
+        }
 
-		foreach ($metadata['collection'] as $collection) {
+        foreach ($metadata['collection'] as $collection) {
 
-			if (!empty($collUid[$collection])) {
+            if (!empty($collUid[$collection])) {
 
-				// Add existing collection's UID.
-				$collections[] = $collUid[$collection];
+                // Add existing collection's UID.
+                $collections[] = $collUid[$collection];
 
-			} else {
+            } else {
 
-				// Insert new collection.
-				$collNewUid = uniqid('NEW');
+                // Insert new collection.
+                $collNewUid = uniqid('NEW');
 
-				$collData['tx_dlf_collections'][$collNewUid] = array (
-					'pid' => $pid,
-					'label' => $collection,
-					'index_name' => $collection,
-					'oai_name' => (!empty($conf['publishNewCollections']) ? $collection : ''),
-					'description' => '',
-					'documents' => 0,
-					'owner' => 0,
-					'status' => 0,
-				);
+                $collData['tx_dlf_collections'][$collNewUid] = array (
+                    'pid' => $pid,
+                    'label' => $collection,
+                    'index_name' => $collection,
+                    'oai_name' => (!empty($conf['publishNewCollections']) ? $collection : ''),
+                    'description' => '',
+                    'documents' => 0,
+                    'owner' => 0,
+                    'status' => 0,
+                );
 
-				$substUid = tx_dlf_helper::processDB($collData);
+                $substUid = tx_dlf_helper::processDB($collData);
 
-				// Prevent double insertion.
-				unset ($collData);
+                // Prevent double insertion.
+                unset ($collData);
 
-				// Add new collection's UID.
-				$collections[] = $substUid[$collNewUid];
+                // Add new collection's UID.
+                $collections[] = $substUid[$collNewUid];
 
-				if (!defined('TYPO3_cliMode')) {
+                if (!defined('TYPO3_cliMode')) {
 
-					$message = \TYPO3\CMS\Core\Utility\GeneralUtility::makeInstance(
-						'TYPO3\\CMS\\Core\\Messaging\\FlashMessage',
-						htmlspecialchars(sprintf(tx_dlf_helper::getLL('flash.newCollection'), $collection, $substUid[$collNewUid])),
-						tx_dlf_helper::getLL('flash.attention', TRUE),
-						\TYPO3\CMS\Core\Messaging\FlashMessage::INFO,
-						TRUE
-					);
+                    $message = \TYPO3\CMS\Core\Utility\GeneralUtility::makeInstance(
+                        'TYPO3\\CMS\\Core\\Messaging\\FlashMessage',
+                        htmlspecialchars(sprintf(tx_dlf_helper::getLL('flash.newCollection'), $collection, $substUid[$collNewUid])),
+                        tx_dlf_helper::getLL('flash.attention', TRUE),
+                        \TYPO3\CMS\Core\Messaging\FlashMessage::INFO,
+                        TRUE
+                    );
 
-					tx_dlf_helper::addMessage($message);
+                    tx_dlf_helper::addMessage($message);
 
-				}
+                }
 
-			}
+            }
 
-		}
+        }
 
-		// Preserve user-defined collections.
-		$result = $GLOBALS['TYPO3_DB']->exec_SELECT_mm_query(
-			'tx_dlf_collections.uid AS uid',
-			'tx_dlf_documents',
-			'tx_dlf_relations',
-			'tx_dlf_collections',
-			'AND tx_dlf_documents.pid='.intval($pid).' AND tx_dlf_collections.pid='.intval($pid).' AND tx_dlf_documents.uid='.$GLOBALS['TYPO3_DB']->fullQuoteStr($this->uid, 'tx_dlf_documents').' AND NOT (tx_dlf_collections.cruser_id='.intval($be_user).' AND tx_dlf_collections.fe_cruser_id=0) AND tx_dlf_relations.ident='.$GLOBALS['TYPO3_DB']->fullQuoteStr('docs_colls', 'tx_dlf_relations'),
-			'',
-			'',
-			''
-		);
+        // Preserve user-defined collections.
+        $result = $GLOBALS['TYPO3_DB']->exec_SELECT_mm_query(
+            'tx_dlf_collections.uid AS uid',
+            'tx_dlf_documents',
+            'tx_dlf_relations',
+            'tx_dlf_collections',
+            'AND tx_dlf_documents.pid='.intval($pid).' AND tx_dlf_collections.pid='.intval($pid).' AND tx_dlf_documents.uid='.$GLOBALS['TYPO3_DB']->fullQuoteStr($this->uid, 'tx_dlf_documents').' AND NOT (tx_dlf_collections.cruser_id='.intval($be_user).' AND tx_dlf_collections.fe_cruser_id=0) AND tx_dlf_relations.ident='.$GLOBALS['TYPO3_DB']->fullQuoteStr('docs_colls', 'tx_dlf_relations'),
+            '',
+            '',
+            ''
+        );
 
-		for ($i = 0, $j = $GLOBALS['TYPO3_DB']->sql_num_rows($result); $i < $j; $i++) {
+        for ($i = 0, $j = $GLOBALS['TYPO3_DB']->sql_num_rows($result); $i < $j; $i++) {
 
-			list ($collections[]) = $GLOBALS['TYPO3_DB']->sql_fetch_row($result);
+            list ($collections[]) = $GLOBALS['TYPO3_DB']->sql_fetch_row($result);
 
-		}
+        }
 
-		$metadata['collection'] = $collections;
+        $metadata['collection'] = $collections;
 
-		// Get UID for owner.
-		$owner = !empty($metadata['owner'][0]) ? $metadata['owner'][0] : 'default';
+        // Get UID for owner.
+        $owner = !empty($metadata['owner'][0]) ? $metadata['owner'][0] : 'default';
 
-		$result = $GLOBALS['TYPO3_DB']->exec_SELECTquery(
-			'tx_dlf_libraries.uid AS uid',
-			'tx_dlf_libraries',
-			'tx_dlf_libraries.pid='.intval($pid).' AND tx_dlf_libraries.index_name='.$GLOBALS['TYPO3_DB']->fullQuoteStr($owner, 'tx_dlf_libraries').tx_dlf_helper::whereClause('tx_dlf_libraries'),
-			'',
-			'',
-			'1'
-		);
+        $result = $GLOBALS['TYPO3_DB']->exec_SELECTquery(
+            'tx_dlf_libraries.uid AS uid',
+            'tx_dlf_libraries',
+            'tx_dlf_libraries.pid='.intval($pid).' AND tx_dlf_libraries.index_name='.$GLOBALS['TYPO3_DB']->fullQuoteStr($owner, 'tx_dlf_libraries').tx_dlf_helper::whereClause('tx_dlf_libraries'),
+            '',
+            '',
+            '1'
+        );
 
-		if ($GLOBALS['TYPO3_DB']->sql_num_rows($result)) {
+        if ($GLOBALS['TYPO3_DB']->sql_num_rows($result)) {
 
-			list ($ownerUid) = $GLOBALS['TYPO3_DB']->sql_fetch_row($result);
+            list ($ownerUid) = $GLOBALS['TYPO3_DB']->sql_fetch_row($result);
 
-		} else {
+        } else {
 
-			// Insert new library.
-			$libNewUid = uniqid('NEW');
+            // Insert new library.
+            $libNewUid = uniqid('NEW');
 
-			$libData['tx_dlf_libraries'][$libNewUid] = array (
-				'pid' => $pid,
-				'label' => $owner,
-				'index_name' => $owner,
-				'website' => '',
-				'contact' => '',
-				'image' => '',
-				'oai_label' => '',
-				'oai_base' => '',
-				'opac_label' => '',
-				'opac_base' => '',
-				'union_label' => '',
-				'union_base' => '',
-			);
+            $libData['tx_dlf_libraries'][$libNewUid] = array (
+                'pid' => $pid,
+                'label' => $owner,
+                'index_name' => $owner,
+                'website' => '',
+                'contact' => '',
+                'image' => '',
+                'oai_label' => '',
+                'oai_base' => '',
+                'opac_label' => '',
+                'opac_base' => '',
+                'union_label' => '',
+                'union_base' => '',
+            );
 
-			$substUid = tx_dlf_helper::processDB($libData);
+            $substUid = tx_dlf_helper::processDB($libData);
 
-			// Add new library's UID.
-			$ownerUid = $substUid[$libNewUid];
+            // Add new library's UID.
+            $ownerUid = $substUid[$libNewUid];
 
-			if (!defined('TYPO3_cliMode')) {
+            if (!defined('TYPO3_cliMode')) {
 
-				$message = \TYPO3\CMS\Core\Utility\GeneralUtility::makeInstance(
-					'TYPO3\\CMS\\Core\\Messaging\\FlashMessage',
-					htmlspecialchars(sprintf(tx_dlf_helper::getLL('flash.newLibrary'), $owner, $ownerUid)),
-					tx_dlf_helper::getLL('flash.attention', TRUE),
-					\TYPO3\CMS\Core\Messaging\FlashMessage::INFO,
-					TRUE
-				);
+                $message = \TYPO3\CMS\Core\Utility\GeneralUtility::makeInstance(
+                    'TYPO3\\CMS\\Core\\Messaging\\FlashMessage',
+                    htmlspecialchars(sprintf(tx_dlf_helper::getLL('flash.newLibrary'), $owner, $ownerUid)),
+                    tx_dlf_helper::getLL('flash.attention', TRUE),
+                    \TYPO3\CMS\Core\Messaging\FlashMessage::INFO,
+                    TRUE
+                );
 
-				tx_dlf_helper::addMessage($message);
+                tx_dlf_helper::addMessage($message);
 
-			}
+            }
 
-		}
+        }
 
-		$metadata['owner'][0] = $ownerUid;
+        $metadata['owner'][0] = $ownerUid;
 
-		// Get UID of parent document.
-		$partof = 0;
+        // Get UID of parent document.
+        $partof = 0;
 
-		// Get the closest ancestor of the current document which has a MPTR child.
-		$parentMptr = $this->mets->xpath('./mets:structMap[@TYPE="LOGICAL"]//mets:div[@ID="'.$this->_getToplevelId().'"]/ancestor::mets:div[./mets:mptr][1]/mets:mptr');
+        // Get the closest ancestor of the current document which has a MPTR child.
+        $parentMptr = $this->mets->xpath('./mets:structMap[@TYPE="LOGICAL"]//mets:div[@ID="'.$this->_getToplevelId().'"]/ancestor::mets:div[./mets:mptr][1]/mets:mptr');
 
-		if (!empty($parentMptr[0])) {
+        if (!empty($parentMptr[0])) {
 
-			$parentLocation = (string) $parentMptr[0]->attributes('http://www.w3.org/1999/xlink')->href;
+            $parentLocation = (string) $parentMptr[0]->attributes('http://www.w3.org/1999/xlink')->href;
 
-			if ($parentLocation != $this->location) {
+            if ($parentLocation != $this->location) {
 
-				$parentDoc =& tx_dlf_document::getInstance($parentLocation, $pid);
+                $parentDoc =& tx_dlf_document::getInstance($parentLocation, $pid);
 
-				if ($parentDoc->ready) {
+                if ($parentDoc->ready) {
 
-					if ($parentDoc->pid != $pid) {
+                    if ($parentDoc->pid != $pid) {
 
-						$parentDoc->save($pid, $core);
+                        $parentDoc->save($pid, $core);
 
-					}
+                    }
 
-					$partof = $parentDoc->uid;
+                    $partof = $parentDoc->uid;
 
-				}
+                }
 
-			}
+            }
 
-		}
+        }
 
-		// Use the date of publication or title as alternative sorting metric for parts of multi-part works.
-		if (!empty($partof)) {
+        // Use the date of publication or title as alternative sorting metric for parts of multi-part works.
+        if (!empty($partof)) {
 
-			if (empty($metadata['volume'][0]) && !empty($metadata['year'][0])) {
+            if (empty($metadata['volume'][0]) && !empty($metadata['year'][0])) {
 
-				$metadata['volume'] = $metadata['year'];
+                $metadata['volume'] = $metadata['year'];
 
-			}
+            }
 
-			if (empty($metadata['volume_sorting'][0])) {
+            if (empty($metadata['volume_sorting'][0])) {
 
-				if (!empty($metadata['year_sorting'][0])) {
+                if (!empty($metadata['year_sorting'][0])) {
 
-					$metadata['volume_sorting'][0] = $metadata['year_sorting'][0];
+                    $metadata['volume_sorting'][0] = $metadata['year_sorting'][0];
 
-				} elseif (!empty($metadata['year'][0])) {
+                } elseif (!empty($metadata['year'][0])) {
 
-					$metadata['volume_sorting'][0] = $metadata['year'][0];
+                    $metadata['volume_sorting'][0] = $metadata['year'][0];
 
-				}
+                }
 
-			}
+            }
 
-			// If volume_sorting is still empty, try to use title_sorting finally (workaround for newspapers)
-			if (empty($metadata['volume_sorting'][0])) {
+            // If volume_sorting is still empty, try to use title_sorting finally (workaround for newspapers)
+            if (empty($metadata['volume_sorting'][0])) {
 
-				if (!empty($metadata['title_sorting'][0])) {
+                if (!empty($metadata['title_sorting'][0])) {
 
-					$metadata['volume_sorting'][0] = $metadata['title_sorting'][0];
+                    $metadata['volume_sorting'][0] = $metadata['title_sorting'][0];
 
-				}
-			}
+                }
+            }
 
-		}
+        }
 
-		// Get metadata for lists and sorting.
-		$listed = array ();
+        // Get metadata for lists and sorting.
+        $listed = array ();
 
-		$sortable = array ();
+        $sortable = array ();
 
-		$result = $GLOBALS['TYPO3_DB']->exec_SELECTquery(
-			'tx_dlf_metadata.index_name AS index_name,tx_dlf_metadata.is_listed AS is_listed,tx_dlf_metadata.is_sortable AS is_sortable',
-			'tx_dlf_metadata',
-			'(tx_dlf_metadata.is_listed=1 OR tx_dlf_metadata.is_sortable=1) AND tx_dlf_metadata.pid='.intval($pid).tx_dlf_helper::whereClause('tx_dlf_metadata'),
-			'',
-			'',
-			''
-		);
+        $result = $GLOBALS['TYPO3_DB']->exec_SELECTquery(
+            'tx_dlf_metadata.index_name AS index_name,tx_dlf_metadata.is_listed AS is_listed,tx_dlf_metadata.is_sortable AS is_sortable',
+            'tx_dlf_metadata',
+            '(tx_dlf_metadata.is_listed=1 OR tx_dlf_metadata.is_sortable=1) AND tx_dlf_metadata.pid='.intval($pid).tx_dlf_helper::whereClause('tx_dlf_metadata'),
+            '',
+            '',
+            ''
+        );
 
-		while ($resArray = $GLOBALS['TYPO3_DB']->sql_fetch_assoc($result)) {
+        while ($resArray = $GLOBALS['TYPO3_DB']->sql_fetch_assoc($result)) {
 
-			if (!empty($metadata[$resArray['index_name']])) {
+            if (!empty($metadata[$resArray['index_name']])) {
 
-				if ($resArray['is_listed']) {
+                if ($resArray['is_listed']) {
 
-					$listed[$resArray['index_name']] = $metadata[$resArray['index_name']];
+                    $listed[$resArray['index_name']] = $metadata[$resArray['index_name']];
 
-				}
+                }
 
-				if ($resArray['is_sortable']) {
+                if ($resArray['is_sortable']) {
 
-					$sortable[$resArray['index_name']] = $metadata[$resArray['index_name']][0];
+                    $sortable[$resArray['index_name']] = $metadata[$resArray['index_name']][0];
 
-				}
+                }
 
-			}
+            }
 
-		}
+        }
 
-		// Fill data array.
-		$data['tx_dlf_documents'][$this->uid] = array (
-			'pid' => $pid,
-			$GLOBALS['TCA']['tx_dlf_documents']['ctrl']['enablecolumns']['starttime'] => 0,
-			$GLOBALS['TCA']['tx_dlf_documents']['ctrl']['enablecolumns']['endtime'] => 0,
-			'prod_id' => $metadata['prod_id'][0],
-			'location' => $this->location,
-			'record_id' => $metadata['record_id'][0],
-			'opac_id' => $metadata['opac_id'][0],
-			'union_id' => $metadata['union_id'][0],
-			'urn' => $metadata['urn'][0],
-			'purl' => $metadata['purl'][0],
-			'title' => $metadata['title'][0],
-			'title_sorting' => $metadata['title_sorting'][0],
-			'author' => implode('; ', $metadata['author']),
-			'year' => implode('; ', $metadata['year']),
-			'place' => implode('; ', $metadata['place']),
-			'thumbnail' => $this->_getThumbnail(TRUE),
-			'metadata' => serialize($listed),
-			'metadata_sorting' => serialize($sortable),
-			'structure' => $metadata['type'][0],
-			'partof' => $partof,
-			'volume' => $metadata['volume'][0],
-			'volume_sorting' => $metadata['volume_sorting'][0],
-			'collections' => $metadata['collection'],
-			'owner' => $metadata['owner'][0],
-			'solrcore' => $core,
-			'status' => 0,
-		);
+        // Fill data array.
+        $data['tx_dlf_documents'][$this->uid] = array (
+            'pid' => $pid,
+            $GLOBALS['TCA']['tx_dlf_documents']['ctrl']['enablecolumns']['starttime'] => 0,
+            $GLOBALS['TCA']['tx_dlf_documents']['ctrl']['enablecolumns']['endtime'] => 0,
+            'prod_id' => $metadata['prod_id'][0],
+            'location' => $this->location,
+            'record_id' => $metadata['record_id'][0],
+            'opac_id' => $metadata['opac_id'][0],
+            'union_id' => $metadata['union_id'][0],
+            'urn' => $metadata['urn'][0],
+            'purl' => $metadata['purl'][0],
+            'title' => $metadata['title'][0],
+            'title_sorting' => $metadata['title_sorting'][0],
+            'author' => implode('; ', $metadata['author']),
+            'year' => implode('; ', $metadata['year']),
+            'place' => implode('; ', $metadata['place']),
+            'thumbnail' => $this->_getThumbnail(TRUE),
+            'metadata' => serialize($listed),
+            'metadata_sorting' => serialize($sortable),
+            'structure' => $metadata['type'][0],
+            'partof' => $partof,
+            'volume' => $metadata['volume'][0],
+            'volume_sorting' => $metadata['volume_sorting'][0],
+            'collections' => $metadata['collection'],
+            'owner' => $metadata['owner'][0],
+            'solrcore' => $core,
+            'status' => 0,
+        );
 
-		// Unhide hidden documents.
-		if (!empty($conf['unhideOnIndex'])) {
+        // Unhide hidden documents.
+        if (!empty($conf['unhideOnIndex'])) {
 
-			$data['tx_dlf_documents'][$this->uid][$GLOBALS['TCA']['tx_dlf_documents']['ctrl']['enablecolumns']['disabled']] = 0;
+            $data['tx_dlf_documents'][$this->uid][$GLOBALS['TCA']['tx_dlf_documents']['ctrl']['enablecolumns']['disabled']] = 0;
 
-		}
+        }
 
-		// Process data.
-		$newIds = tx_dlf_helper::processDB($data);
+        // Process data.
+        $newIds = tx_dlf_helper::processDB($data);
 
-		// Replace placeholder with actual UID.
-		if (strpos($this->uid, 'NEW') === 0) {
+        // Replace placeholder with actual UID.
+        if (strpos($this->uid, 'NEW') === 0) {
 
-			$this->uid = $newIds[$this->uid];
+            $this->uid = $newIds[$this->uid];
 
-			$this->pid = $pid;
+            $this->pid = $pid;
 
-			$this->parentId = $partof;
+            $this->parentId = $partof;
 
-		}
+        }
 
-		if (!defined('TYPO3_cliMode')) {
+        if (!defined('TYPO3_cliMode')) {
 
-			$message = \TYPO3\CMS\Core\Utility\GeneralUtility::makeInstance(
-				'TYPO3\\CMS\\Core\\Messaging\\FlashMessage',
-				htmlspecialchars(sprintf(tx_dlf_helper::getLL('flash.documentSaved'), $metadata['title'][0], $this->uid)),
-				tx_dlf_helper::getLL('flash.done', TRUE),
-				\TYPO3\CMS\Core\Messaging\FlashMessage::OK,
-				TRUE
-			);
+            $message = \TYPO3\CMS\Core\Utility\GeneralUtility::makeInstance(
+                'TYPO3\\CMS\\Core\\Messaging\\FlashMessage',
+                htmlspecialchars(sprintf(tx_dlf_helper::getLL('flash.documentSaved'), $metadata['title'][0], $this->uid)),
+                tx_dlf_helper::getLL('flash.done', TRUE),
+                \TYPO3\CMS\Core\Messaging\FlashMessage::OK,
+                TRUE
+            );
 
-			tx_dlf_helper::addMessage($message);
+            tx_dlf_helper::addMessage($message);
 
-		}
+        }
 
-		// Add document to index.
-		if ($core) {
+        // Add document to index.
+        if ($core) {
 
-			tx_dlf_indexing::add($this, $core);
+            tx_dlf_indexing::add($this, $core);
 
-		} else {
+        } else {
 
-			if (TYPO3_DLOG) {
+            if (TYPO3_DLOG) {
 
-				\TYPO3\CMS\Core\Utility\GeneralUtility::devLog('[tx_dlf_document->save('.$_pid.', '.$_core.')] Invalid UID "'.$core.'" for Solr core', self::$extKey, SYSLOG_SEVERITY_NOTICE);
+                \TYPO3\CMS\Core\Utility\GeneralUtility::devLog('[tx_dlf_document->save('.$_pid.', '.$_core.')] Invalid UID "'.$core.'" for Solr core', self::$extKey, SYSLOG_SEVERITY_NOTICE);
 
-			}
+            }
 
-		}
+        }
 
-		return TRUE;
+        return TRUE;
 
-	}
+    }
 
-	/**
-	 * This returns $this->cPid via __get()
-	 *
-	 * @access	protected
-	 *
-	 * @return	integer		The PID of the metadata definitions
-	 */
-	protected function _getCPid() {
+    /**
+     * This returns $this->cPid via __get()
+     *
+     * @access	protected
+     *
+     * @return	integer		The PID of the metadata definitions
+     */
+    protected function _getCPid() {
 
-		return $this->cPid;
+        return $this->cPid;
 
-	}
+    }
 
-	/**
-	 * This builds an array of the document's dmdSecs
-	 *
-	 * @access	protected
-	 *
-	 * @return	array		Array of dmdSecs with their IDs as array key
-	 */
-	protected function _getDmdSec() {
+    /**
+     * This builds an array of the document's dmdSecs
+     *
+     * @access	protected
+     *
+     * @return	array		Array of dmdSecs with their IDs as array key
+     */
+    protected function _getDmdSec() {
 
-		if (!$this->dmdSecLoaded) {
+        if (!$this->dmdSecLoaded) {
 
-			// Get available data formats.
-			$this->loadFormats();
+            // Get available data formats.
+            $this->loadFormats();
 
-			// Get dmdSec nodes from METS.
-			$dmdIds = $this->mets->xpath('./mets:dmdSec/@ID');
+            // Get dmdSec nodes from METS.
+            $dmdIds = $this->mets->xpath('./mets:dmdSec/@ID');
 
-			foreach ($dmdIds as $dmdId) {
+            foreach ($dmdIds as $dmdId) {
 
-				if ($type = $this->mets->xpath('./mets:dmdSec[@ID="'.(string) $dmdId.'"]/mets:mdWrap[not(@MDTYPE="OTHER")]/@MDTYPE')) {
+                if ($type = $this->mets->xpath('./mets:dmdSec[@ID="'.(string) $dmdId.'"]/mets:mdWrap[not(@MDTYPE="OTHER")]/@MDTYPE')) {
 
-					if (!empty($this->formats[(string) $type[0]])) {
+                    if (!empty($this->formats[(string) $type[0]])) {
 
-						$type = (string) $type[0];
+                        $type = (string) $type[0];
 
-						$xml = $this->mets->xpath('./mets:dmdSec[@ID="'.(string) $dmdId.'"]/mets:mdWrap[@MDTYPE="'.$type.'"]/mets:xmlData/'.strtolower($type).':'.$this->formats[$type]['rootElement']);
+                        $xml = $this->mets->xpath('./mets:dmdSec[@ID="'.(string) $dmdId.'"]/mets:mdWrap[@MDTYPE="'.$type.'"]/mets:xmlData/'.strtolower($type).':'.$this->formats[$type]['rootElement']);
 
-					}
+                    }
 
-				} elseif ($type = $this->mets->xpath('./mets:dmdSec[@ID="'.(string) $dmdId.'"]/mets:mdWrap[@MDTYPE="OTHER"]/@OTHERMDTYPE')) {
+                } elseif ($type = $this->mets->xpath('./mets:dmdSec[@ID="'.(string) $dmdId.'"]/mets:mdWrap[@MDTYPE="OTHER"]/@OTHERMDTYPE')) {
 
-					if (!empty($this->formats[(string) $type[0]])) {
+                    if (!empty($this->formats[(string) $type[0]])) {
 
-						$type = (string) $type[0];
+                        $type = (string) $type[0];
 
-						$xml = $this->mets->xpath('./mets:dmdSec[@ID="'.(string) $dmdId.'"]/mets:mdWrap[@MDTYPE="OTHER"][@OTHERMDTYPE="'.$type.'"]/mets:xmlData/'.strtolower($type).':'.$this->formats[$type]['rootElement']);
+                        $xml = $this->mets->xpath('./mets:dmdSec[@ID="'.(string) $dmdId.'"]/mets:mdWrap[@MDTYPE="OTHER"][@OTHERMDTYPE="'.$type.'"]/mets:xmlData/'.strtolower($type).':'.$this->formats[$type]['rootElement']);
 
-					}
+                    }
 
-				}
+                }
 
-				if ($xml) {
+                if ($xml) {
 
-					$this->dmdSec[(string) $dmdId]['type'] = $type;
+                    $this->dmdSec[(string) $dmdId]['type'] = $type;
 
-					$this->dmdSec[(string) $dmdId]['xml'] = $xml[0];
+                    $this->dmdSec[(string) $dmdId]['xml'] = $xml[0];
 
-					$this->registerNamespaces($this->dmdSec[(string) $dmdId]['xml']);
+                    $this->registerNamespaces($this->dmdSec[(string) $dmdId]['xml']);
 
-				}
+                }
 
-			}
+            }
 
-			$this->dmdSecLoaded = TRUE;
+            $this->dmdSecLoaded = TRUE;
 
-		}
+        }
 
-		return $this->dmdSec;
+        return $this->dmdSec;
 
-	}
+    }
 
-	/**
-	 * This builds the file ID -> USE concordance
-	 *
-	 * @access	protected
-	 *
-	 * @return	array		Array of file use groups with file IDs
-	 */
-	protected function _getFileGrps() {
+    /**
+     * This builds the file ID -> USE concordance
+     *
+     * @access	protected
+     *
+     * @return	array		Array of file use groups with file IDs
+     */
+    protected function _getFileGrps() {
 
-		if (!$this->fileGrpsLoaded) {
+        if (!$this->fileGrpsLoaded) {
 
-			// Get configured USE attributes.
-			$extConf = unserialize($GLOBALS['TYPO3_CONF_VARS']['EXT']['extConf'][self::$extKey]);
+            // Get configured USE attributes.
+            $extConf = unserialize($GLOBALS['TYPO3_CONF_VARS']['EXT']['extConf'][self::$extKey]);
 
-			$useGrps = \TYPO3\CMS\Core\Utility\GeneralUtility::trimExplode(',', $extConf['fileGrps']);
+            $useGrps = \TYPO3\CMS\Core\Utility\GeneralUtility::trimExplode(',', $extConf['fileGrps']);
 
-			if (!empty($extConf['fileGrpThumbs'])) {
+            if (!empty($extConf['fileGrpThumbs'])) {
 
-				$useGrps[] = $extConf['fileGrpThumbs'];
+                $useGrps[] = $extConf['fileGrpThumbs'];
 
-			}
+            }
 
-			if (!empty($extConf['fileGrpDownload'])) {
+            if (!empty($extConf['fileGrpDownload'])) {
 
-				$useGrps[] = $extConf['fileGrpDownload'];
+                $useGrps[] = $extConf['fileGrpDownload'];
 
-			}
+            }
 
-			if (!empty($extConf['fileGrpFulltext'])) {
+            if (!empty($extConf['fileGrpFulltext'])) {
 
-				$useGrps[] = $extConf['fileGrpFulltext'];
+                $useGrps[] = $extConf['fileGrpFulltext'];
 
-			}
+            }
 
-			if (!empty($extConf['fileGrpAudio'])) {
+            if (!empty($extConf['fileGrpAudio'])) {
 
-				$useGrps[] = $extConf['fileGrpAudio'];
+                $useGrps[] = $extConf['fileGrpAudio'];
 
-			}
+            }
 
-			// Get all file groups.
-			$fileGrps = $this->mets->xpath('./mets:fileSec/mets:fileGrp');
+            // Get all file groups.
+            $fileGrps = $this->mets->xpath('./mets:fileSec/mets:fileGrp');
 
-			// Build concordance for configured USE attributes.
-			foreach ($fileGrps as $fileGrp) {
+            // Build concordance for configured USE attributes.
+            foreach ($fileGrps as $fileGrp) {
 
-				if (in_array((string) $fileGrp['USE'], $useGrps)) {
+                if (in_array((string) $fileGrp['USE'], $useGrps)) {
 
-					foreach ($fileGrp->children('http://www.loc.gov/METS/')->file as $file) {
+                    foreach ($fileGrp->children('http://www.loc.gov/METS/')->file as $file) {
 
-						$this->fileGrps[(string) $file->attributes()->ID] = (string) $fileGrp['USE'];
+                        $this->fileGrps[(string) $file->attributes()->ID] = (string) $fileGrp['USE'];
 
-					}
+                    }
 
-				}
+                }
 
-			}
+            }
 
-			// Are there any fulltext files available?
-			if (!empty($extConf['fileGrpFulltext']) && in_array($extConf['fileGrpFulltext'], $this->fileGrps)) {
+            // Are there any fulltext files available?
+            if (!empty($extConf['fileGrpFulltext']) && in_array($extConf['fileGrpFulltext'], $this->fileGrps)) {
 
-				$this->hasFulltext = TRUE;
+                $this->hasFulltext = TRUE;
 
-			}
+            }
 
-			$this->fileGrpsLoaded = TRUE;
+            $this->fileGrpsLoaded = TRUE;
 
-		}
+        }
 
-		return $this->fileGrps;
+        return $this->fileGrps;
 
-	}
+    }
 
-	/**
-	 * This returns $this->hasFulltext via __get()
-	 *
-	 * @access	protected
-	 *
-	 * @return	boolean		Are there any fulltext files available?
-	 */
-	protected function _getHasFulltext() {
+    /**
+     * This returns $this->hasFulltext via __get()
+     *
+     * @access	protected
+     *
+     * @return	boolean		Are there any fulltext files available?
+     */
+    protected function _getHasFulltext() {
 
-		// Are the fileGrps already loaded?
-		if (!$this->fileGrpsLoaded) {
+        // Are the fileGrps already loaded?
+        if (!$this->fileGrpsLoaded) {
 
-			$this->_getFileGrps();
+            $this->_getFileGrps();
 
-		}
+        }
 
-		return $this->hasFulltext;
+        return $this->hasFulltext;
 
-	}
+    }
 
-	/**
-	 * This returns $this->location via __get()
-	 *
-	 * @access	protected
-	 *
-	 * @return	string		The location of the document
-	 */
-	protected function _getLocation() {
+    /**
+     * This returns $this->location via __get()
+     *
+     * @access	protected
+     *
+     * @return	string		The location of the document
+     */
+    protected function _getLocation() {
 
-		return $this->location;
+        return $this->location;
 
-	}
+    }
 
-	/**
-	 * This builds an array of the document's metadata
-	 *
-	 * @access	protected
-	 *
-	 * @return	array		Array of metadata with their corresponding logical structure node ID as key
-	 */
-	protected function _getMetadataArray() {
+    /**
+     * This builds an array of the document's metadata
+     *
+     * @access	protected
+     *
+     * @return	array		Array of metadata with their corresponding logical structure node ID as key
+     */
+    protected function _getMetadataArray() {
 
-		// Set metadata definitions' PID.
-		$cPid = ($this->cPid ? $this->cPid : $this->pid);
+        // Set metadata definitions' PID.
+        $cPid = ($this->cPid ? $this->cPid : $this->pid);
 
-		if (!$cPid) {
+        if (!$cPid) {
 
-			if (TYPO3_DLOG) {
+            if (TYPO3_DLOG) {
 
-				\TYPO3\CMS\Core\Utility\GeneralUtility::devLog('[tx_dlf_document->getMetadataArray()] Invalid PID "'.$cPid.'" for metadata definitions', self::$extKey, SYSLOG_SEVERITY_ERROR);
+                \TYPO3\CMS\Core\Utility\GeneralUtility::devLog('[tx_dlf_document->getMetadataArray()] Invalid PID "'.$cPid.'" for metadata definitions', self::$extKey, SYSLOG_SEVERITY_ERROR);
 
-			}
+            }
 
-			return array ();
+            return array ();
 
-		}
+        }
 
-		if (!$this->metadataArrayLoaded || $this->metadataArray[0] != $cPid) {
+        if (!$this->metadataArrayLoaded || $this->metadataArray[0] != $cPid) {
 
-			// Get all logical structure nodes with metadata.
-			if (($ids = $this->mets->xpath('./mets:structMap[@TYPE="LOGICAL"]//mets:div[@DMDID]/@ID'))) {
+            // Get all logical structure nodes with metadata.
+            if (($ids = $this->mets->xpath('./mets:structMap[@TYPE="LOGICAL"]//mets:div[@DMDID]/@ID'))) {
 
-				foreach ($ids as $id) {
+                foreach ($ids as $id) {
 
-					$this->metadataArray[(string) $id] = $this->getMetadata((string) $id, $cPid);
+                    $this->metadataArray[(string) $id] = $this->getMetadata((string) $id, $cPid);
 
-				}
+                }
 
-			}
+            }
 
-			// Set current PID for metadata definitions.
-			$this->metadataArray[0] = $cPid;
+            // Set current PID for metadata definitions.
+            $this->metadataArray[0] = $cPid;
 
-			$this->metadataArrayLoaded = TRUE;
+            $this->metadataArrayLoaded = TRUE;
 
-		}
+        }
 
-		return $this->metadataArray;
+        return $this->metadataArray;
 
-	}
+    }
 
-	/**
-	 * This returns $this->mets via __get()
-	 *
-	 * @access	protected
-	 *
-	 * @return	SimpleXMLElement		The XML's METS part as SimpleXMLElement object
-	 */
-	protected function _getMets() {
+    /**
+     * This returns $this->mets via __get()
+     *
+     * @access	protected
+     *
+     * @return	SimpleXMLElement		The XML's METS part as SimpleXMLElement object
+     */
+    protected function _getMets() {
 
-		return $this->mets;
+        return $this->mets;
 
-	}
+    }
 
-	/**
-	 * This returns $this->numPages via __get()
-	 *
-	 * @access	protected
-	 *
-	 * @return	integer		The total number of pages and/or tracks
-	 */
-	protected function _getNumPages() {
+    /**
+     * This returns $this->numPages via __get()
+     *
+     * @access	protected
+     *
+     * @return	integer		The total number of pages and/or tracks
+     */
+    protected function _getNumPages() {
 
-		$this->_getPhysicalStructure();
+        $this->_getPhysicalStructure();
 
-		return $this->numPages;
+        return $this->numPages;
 
-	}
+    }
 
-	/**
-	 * This returns $this->parentId via __get()
-	 *
-	 * @access	protected
-	 *
-	 * @return	integer		The UID of the parent document or zero if not applicable
-	 */
-	protected function _getParentId() {
+    /**
+     * This returns $this->parentId via __get()
+     *
+     * @access	protected
+     *
+     * @return	integer		The UID of the parent document or zero if not applicable
+     */
+    protected function _getParentId() {
 
-		return $this->parentId;
+        return $this->parentId;
 
-	}
+    }
 
-	/**
-	 * This builds an array of the document's physical structure
-	 *
-	 * @access	protected
-	 *
-	 * @return	array		Array of physical elements' id, type, label and file representations ordered by @ORDER attribute
-	 */
-	protected function _getPhysicalStructure() {
+    /**
+     * This builds an array of the document's physical structure
+     *
+     * @access	protected
+     *
+     * @return	array		Array of physical elements' id, type, label and file representations ordered by @ORDER attribute
+     */
+    protected function _getPhysicalStructure() {
 
-		// Is there no physical structure array yet?
-		if (!$this->physicalStructureLoaded) {
+        // Is there no physical structure array yet?
+        if (!$this->physicalStructureLoaded) {
 
-			// Does the document have a structMap node of type "PHYSICAL"?
-			$elementNodes = $this->mets->xpath('./mets:structMap[@TYPE="PHYSICAL"]/mets:div[@TYPE="physSequence"]/mets:div');
+            // Does the document have a structMap node of type "PHYSICAL"?
+            $elementNodes = $this->mets->xpath('./mets:structMap[@TYPE="PHYSICAL"]/mets:div[@TYPE="physSequence"]/mets:div');
 
-			if ($elementNodes) {
+            if ($elementNodes) {
 
-				// Get file groups.
-				$fileUse = $this->_getFileGrps();
+                // Get file groups.
+                $fileUse = $this->_getFileGrps();
 
-				// Get the physical sequence's metadata.
-				$physNode = $this->mets->xpath('./mets:structMap[@TYPE="PHYSICAL"]/mets:div[@TYPE="physSequence"]');
+                // Get the physical sequence's metadata.
+                $physNode = $this->mets->xpath('./mets:structMap[@TYPE="PHYSICAL"]/mets:div[@TYPE="physSequence"]');
 
-				$physSeq[0] = (string) $physNode[0]['ID'];
+                $physSeq[0] = (string) $physNode[0]['ID'];
 
-				$this->physicalStructureInfo[$physSeq[0]]['id'] = $physNode[0]['ID'];
+                $this->physicalStructureInfo[$physSeq[0]]['id'] = $physNode[0]['ID'];
 
-				$this->physicalStructureInfo[$physSeq[0]]['dmdId'] = (isset($physNode[0]['DMDID']) ? (string) $physNode[0]['DMDID'] : '');
+                $this->physicalStructureInfo[$physSeq[0]]['dmdId'] = (isset($physNode[0]['DMDID']) ? (string) $physNode[0]['DMDID'] : '');
 
-				$this->physicalStructureInfo[$physSeq[0]]['label'] = (isset($physNode[0]['LABEL']) ? (string) $physNode[0]['LABEL'] : '');
+                $this->physicalStructureInfo[$physSeq[0]]['label'] = (isset($physNode[0]['LABEL']) ? (string) $physNode[0]['LABEL'] : '');
 
-				$this->physicalStructureInfo[$physSeq[0]]['orderlabel'] = (isset($physNode[0]['ORDERLABEL']) ? (string) $physNode[0]['ORDERLABEL'] : '');
+                $this->physicalStructureInfo[$physSeq[0]]['orderlabel'] = (isset($physNode[0]['ORDERLABEL']) ? (string) $physNode[0]['ORDERLABEL'] : '');
 
-				$this->physicalStructureInfo[$physSeq[0]]['type'] = (string) $physNode[0]['TYPE'];
+                $this->physicalStructureInfo[$physSeq[0]]['type'] = (string) $physNode[0]['TYPE'];
 
-				$this->physicalStructureInfo[$physSeq[0]]['contentIds'] = (isset($physNode[0]['CONTENTIDS']) ? (string) $physNode[0]['CONTENTIDS'] : '');
+                $this->physicalStructureInfo[$physSeq[0]]['contentIds'] = (isset($physNode[0]['CONTENTIDS']) ? (string) $physNode[0]['CONTENTIDS'] : '');
 
-				// Get the file representations from fileSec node.
-				foreach ($physNode[0]->children('http://www.loc.gov/METS/')->fptr as $fptr) {
+                // Get the file representations from fileSec node.
+                foreach ($physNode[0]->children('http://www.loc.gov/METS/')->fptr as $fptr) {
 
-					// Check if file has valid @USE attribute.
-					if (!empty($fileUse[(string) $fptr->attributes()->FILEID])) {
+                    // Check if file has valid @USE attribute.
+                    if (!empty($fileUse[(string) $fptr->attributes()->FILEID])) {
 
-						$this->physicalStructureInfo[$physSeq[0]]['files'][$fileUse[(string) $fptr->attributes()->FILEID]] = (string) $fptr->attributes()->FILEID;
+                        $this->physicalStructureInfo[$physSeq[0]]['files'][$fileUse[(string) $fptr->attributes()->FILEID]] = (string) $fptr->attributes()->FILEID;
 
-					}
+                    }
 
-				}
+                }
 
-				// Build the physical elements' array from the physical structMap node.
-				foreach ($elementNodes as $elementNode) {
+                // Build the physical elements' array from the physical structMap node.
+                foreach ($elementNodes as $elementNode) {
 
-					$elements[(int) $elementNode['ORDER']] = (string) $elementNode['ID'];
+                    $elements[(int) $elementNode['ORDER']] = (string) $elementNode['ID'];
 
-					$this->physicalStructureInfo[$elements[(int) $elementNode['ORDER']]]['id'] = $elementNode['ID'];
+                    $this->physicalStructureInfo[$elements[(int) $elementNode['ORDER']]]['id'] = $elementNode['ID'];
 
-					$this->physicalStructureInfo[$elements[(int) $elementNode['ORDER']]]['dmdId'] = (isset($elementNode['DMDID']) ? (string) $elementNode['DMDID'] : '');
+                    $this->physicalStructureInfo[$elements[(int) $elementNode['ORDER']]]['dmdId'] = (isset($elementNode['DMDID']) ? (string) $elementNode['DMDID'] : '');
 
-					$this->physicalStructureInfo[$elements[(int) $elementNode['ORDER']]]['label'] = (isset($elementNode['LABEL']) ? (string) $elementNode['LABEL'] : '');
+                    $this->physicalStructureInfo[$elements[(int) $elementNode['ORDER']]]['label'] = (isset($elementNode['LABEL']) ? (string) $elementNode['LABEL'] : '');
 
-					$this->physicalStructureInfo[$elements[(int) $elementNode['ORDER']]]['orderlabel'] = (isset($elementNode['ORDERLABEL']) ? (string) $elementNode['ORDERLABEL'] : '');
+                    $this->physicalStructureInfo[$elements[(int) $elementNode['ORDER']]]['orderlabel'] = (isset($elementNode['ORDERLABEL']) ? (string) $elementNode['ORDERLABEL'] : '');
 
-					$this->physicalStructureInfo[$elements[(int) $elementNode['ORDER']]]['type'] = (string) $elementNode['TYPE'];
+                    $this->physicalStructureInfo[$elements[(int) $elementNode['ORDER']]]['type'] = (string) $elementNode['TYPE'];
 
-					$this->physicalStructureInfo[$elements[(int) $elementNode['ORDER']]]['contentIds'] = (isset($elementNode['CONTENTIDS']) ? (string) $elementNode['CONTENTIDS'] : '');
+                    $this->physicalStructureInfo[$elements[(int) $elementNode['ORDER']]]['contentIds'] = (isset($elementNode['CONTENTIDS']) ? (string) $elementNode['CONTENTIDS'] : '');
 
-					// Get the file representations from fileSec node.
-					foreach ($elementNode->children('http://www.loc.gov/METS/')->fptr as $fptr) {
+                    // Get the file representations from fileSec node.
+                    foreach ($elementNode->children('http://www.loc.gov/METS/')->fptr as $fptr) {
 
-						// Check if file has valid @USE attribute.
-						if (!empty($fileUse[(string) $fptr->attributes()->FILEID])) {
+                        // Check if file has valid @USE attribute.
+                        if (!empty($fileUse[(string) $fptr->attributes()->FILEID])) {
 
-							$this->physicalStructureInfo[$elements[(int) $elementNode['ORDER']]]['files'][$fileUse[(string) $fptr->attributes()->FILEID]] = (string) $fptr->attributes()->FILEID;
+                            $this->physicalStructureInfo[$elements[(int) $elementNode['ORDER']]]['files'][$fileUse[(string) $fptr->attributes()->FILEID]] = (string) $fptr->attributes()->FILEID;
 
-						}
+                        }
 
-					}
+                    }
 
-				}
+                }
 
-				// Sort array by keys (= @ORDER).
-				if (ksort($elements)) {
+                // Sort array by keys (= @ORDER).
+                if (ksort($elements)) {
 
-					// Set total number of pages/tracks.
-					$this->numPages = count($elements);
+                    // Set total number of pages/tracks.
+                    $this->numPages = count($elements);
 
-					// Merge and re-index the array to get nice numeric indexes.
-					$this->physicalStructure = array_merge($physSeq, $elements);
+                    // Merge and re-index the array to get nice numeric indexes.
+                    $this->physicalStructure = array_merge($physSeq, $elements);
 
-				}
+                }
 
-			}
+            }
 
-			$this->physicalStructureLoaded = TRUE;
+            $this->physicalStructureLoaded = TRUE;
 
-		}
+        }
 
-		return $this->physicalStructure;
+        return $this->physicalStructure;
 
-	}
+    }
 
-	/**
-	 * This gives an array of the document's physical structure metadata
-	 *
-	 * @access	protected
-	 *
-	 * @return	array		Array of elements' type, label and file representations ordered by @ID attribute
-	 */
-	protected function _getPhysicalStructureInfo() {
+    /**
+     * This gives an array of the document's physical structure metadata
+     *
+     * @access	protected
+     *
+     * @return	array		Array of elements' type, label and file representations ordered by @ID attribute
+     */
+    protected function _getPhysicalStructureInfo() {
 
-		// Is there no physical structure array yet?
-		if (!$this->physicalStructureLoaded) {
+        // Is there no physical structure array yet?
+        if (!$this->physicalStructureLoaded) {
 
-			// Build physical structure array.
-			$this->_getPhysicalStructure();
+            // Build physical structure array.
+            $this->_getPhysicalStructure();
 
-		}
+        }
 
-		return $this->physicalStructureInfo;
+        return $this->physicalStructureInfo;
 
-	}
+    }
 
-	/**
-	 * This returns $this->pid via __get()
-	 *
-	 * @access	protected
-	 *
-	 * @return	integer		The PID of the document or zero if not in database
-	 */
-	protected function _getPid() {
+    /**
+     * This returns $this->pid via __get()
+     *
+     * @access	protected
+     *
+     * @return	integer		The PID of the document or zero if not in database
+     */
+    protected function _getPid() {
 
-		return $this->pid;
+        return $this->pid;
 
-	}
+    }
 
-	/**
-	 * This returns $this->ready via __get()
-	 *
-	 * @access	protected
-	 *
-	 * @return	boolean		Is the document instantiated successfully?
-	 */
-	protected function _getReady() {
+    /**
+     * This returns $this->ready via __get()
+     *
+     * @access	protected
+     *
+     * @return	boolean		Is the document instantiated successfully?
+     */
+    protected function _getReady() {
 
-		return $this->ready;
+        return $this->ready;
 
-	}
+    }
 
-	/**
-	 * This returns $this->recordId via __get()
-	 *
-	 * @access	protected
-	 *
-	 * @return	mixed		The METS file's record identifier
-	 */
-	protected function _getRecordId() {
+    /**
+     * This returns $this->recordId via __get()
+     *
+     * @access	protected
+     *
+     * @return	mixed		The METS file's record identifier
+     */
+    protected function _getRecordId() {
 
-		return $this->recordId;
+        return $this->recordId;
 
-	}
+    }
 
-	/**
-	 * This returns $this->rootId via __get()
-	 *
-	 * @access	protected
-	 *
-	 * @return	integer		The UID of the root document or zero if not applicable
-	 */
-	protected function _getRootId() {
+    /**
+     * This returns $this->rootId via __get()
+     *
+     * @access	protected
+     *
+     * @return	integer		The UID of the root document or zero if not applicable
+     */
+    protected function _getRootId() {
 
-		if (!$this->rootIdLoaded) {
+        if (!$this->rootIdLoaded) {
 
-			if ($this->parentId) {
+            if ($this->parentId) {
 
-				$parent = self::getInstance($this->parentId, $this->pid);
+                $parent = self::getInstance($this->parentId, $this->pid);
 
-				$this->rootId = $parent->rootId;
+                $this->rootId = $parent->rootId;
 
-			}
+            }
 
-			$this->rootIdLoaded = TRUE;
+            $this->rootIdLoaded = TRUE;
 
-		}
+        }
 
-		return $this->rootId;
+        return $this->rootId;
 
-	}
+    }
 
-	/**
-	 * This returns the smLinks between logical and physical structMap
-	 *
-	 * @access	protected
-	 *
-	 * @return	array		The links between logical and physical nodes
-	 */
-	protected function _getSmLinks() {
+    /**
+     * This returns the smLinks between logical and physical structMap
+     *
+     * @access	protected
+     *
+     * @return	array		The links between logical and physical nodes
+     */
+    protected function _getSmLinks() {
 
-		if (!$this->smLinksLoaded) {
+        if (!$this->smLinksLoaded) {
 
-			$smLinks = $this->mets->xpath('./mets:structLink/mets:smLink');
+            $smLinks = $this->mets->xpath('./mets:structLink/mets:smLink');
 
-			foreach ($smLinks as $smLink) {
+            foreach ($smLinks as $smLink) {
 
-				$this->smLinks['l2p'][(string) $smLink->attributes('http://www.w3.org/1999/xlink')->from][] = (string) $smLink->attributes('http://www.w3.org/1999/xlink')->to;
+                $this->smLinks['l2p'][(string) $smLink->attributes('http://www.w3.org/1999/xlink')->from][] = (string) $smLink->attributes('http://www.w3.org/1999/xlink')->to;
 
-				$this->smLinks['p2l'][(string) $smLink->attributes('http://www.w3.org/1999/xlink')->to][] = (string) $smLink->attributes('http://www.w3.org/1999/xlink')->from;
+                $this->smLinks['p2l'][(string) $smLink->attributes('http://www.w3.org/1999/xlink')->to][] = (string) $smLink->attributes('http://www.w3.org/1999/xlink')->from;
 
-			}
+            }
 
-			$this->smLinksLoaded = TRUE;
+            $this->smLinksLoaded = TRUE;
 
-		}
+        }
 
-		return $this->smLinks;
+        return $this->smLinks;
 
-	}
+    }
 
-	/**
-	 * This builds an array of the document's logical structure
-	 *
-	 * @access	protected
-	 *
-	 * @return	array		Array of structure nodes' id, label, type and physical page indexes/mptr link with original hierarchy preserved
-	 */
-	protected function _getTableOfContents() {
+    /**
+     * This builds an array of the document's logical structure
+     *
+     * @access	protected
+     *
+     * @return	array		Array of structure nodes' id, label, type and physical page indexes/mptr link with original hierarchy preserved
+     */
+    protected function _getTableOfContents() {
 
-		// Is there no logical structure array yet?
-		if (!$this->tableOfContentsLoaded) {
+        // Is there no logical structure array yet?
+        if (!$this->tableOfContentsLoaded) {
 
-			// Get all logical structures.
-			$this->getLogicalStructure('', TRUE);
+            // Get all logical structures.
+            $this->getLogicalStructure('', TRUE);
 
-			$this->tableOfContentsLoaded = TRUE;
+            $this->tableOfContentsLoaded = TRUE;
 
-		}
+        }
 
-		return $this->tableOfContents;
+        return $this->tableOfContents;
 
-	}
+    }
 
-	/**
-	 * This returns the document's thumbnail location
-	 *
-	 * @access	protected
-	 *
-	 * @param	boolean		$forceReload: Force reloading the thumbnail instead of returning the cached value
-	 *
-	 * @return	string		The document's thumbnail location
-	 */
-	protected function _getThumbnail($forceReload = FALSE) {
+    /**
+     * This returns the document's thumbnail location
+     *
+     * @access	protected
+     *
+     * @param	boolean		$forceReload: Force reloading the thumbnail instead of returning the cached value
+     *
+     * @return	string		The document's thumbnail location
+     */
+    protected function _getThumbnail($forceReload = FALSE) {
 
-		if (!$this->thumbnailLoaded || $forceReload) {
+        if (!$this->thumbnailLoaded || $forceReload) {
 
-			// Retain current PID.
-			$cPid = ($this->cPid ? $this->cPid : $this->pid);
+            // Retain current PID.
+            $cPid = ($this->cPid ? $this->cPid : $this->pid);
 
-			if (!$cPid) {
+            if (!$cPid) {
 
-				if (TYPO3_DLOG) {
+                if (TYPO3_DLOG) {
 
-					\TYPO3\CMS\Core\Utility\GeneralUtility::devLog('[tx_dlf_document->_getThumbnail()] Invalid PID "'.$cPid.'" for structure definitions', self::$extKey, SYSLOG_SEVERITY_ERROR);
+                    \TYPO3\CMS\Core\Utility\GeneralUtility::devLog('[tx_dlf_document->_getThumbnail()] Invalid PID "'.$cPid.'" for structure definitions', self::$extKey, SYSLOG_SEVERITY_ERROR);
 
-				}
+                }
 
-				$this->thumbnailLoaded = TRUE;
+                $this->thumbnailLoaded = TRUE;
 
-				return $this->thumbnail;
+                return $this->thumbnail;
 
-			}
+            }
 
-			// Load extension configuration.
-			$extConf = unserialize($GLOBALS['TYPO3_CONF_VARS']['EXT']['extConf'][self::$extKey]);
+            // Load extension configuration.
+            $extConf = unserialize($GLOBALS['TYPO3_CONF_VARS']['EXT']['extConf'][self::$extKey]);
 
-			if (empty($extConf['fileGrpThumbs'])) {
+            if (empty($extConf['fileGrpThumbs'])) {
 
-				if (TYPO3_DLOG) {
+                if (TYPO3_DLOG) {
 
-					\TYPO3\CMS\Core\Utility\GeneralUtility::devLog('[tx_dlf_document->_getThumbnail()] No fileGrp for thumbnails specified', self::$extKey, SYSLOG_SEVERITY_WARNING);
+                    \TYPO3\CMS\Core\Utility\GeneralUtility::devLog('[tx_dlf_document->_getThumbnail()] No fileGrp for thumbnails specified', self::$extKey, SYSLOG_SEVERITY_WARNING);
 
-				}
+                }
 
-				$this->thumbnailLoaded = TRUE;
+                $this->thumbnailLoaded = TRUE;
 
-				return $this->thumbnail;
+                return $this->thumbnail;
 
-			}
+            }
 
-			$strctId = $this->_getToplevelId();
+            $strctId = $this->_getToplevelId();
 
-			$metadata = $this->getTitledata($cPid);
+            $metadata = $this->getTitledata($cPid);
 
-			// Get structure element to get thumbnail from.
-			$result = $GLOBALS['TYPO3_DB']->exec_SELECTquery(
-				'tx_dlf_structures.thumbnail AS thumbnail',
-				'tx_dlf_structures',
-				'tx_dlf_structures.pid='.intval($cPid).' AND tx_dlf_structures.index_name='.$GLOBALS['TYPO3_DB']->fullQuoteStr($metadata['type'][0], 'tx_dlf_structures').tx_dlf_helper::whereClause('tx_dlf_structures'),
-				'',
-				'',
-				'1'
-			);
+            // Get structure element to get thumbnail from.
+            $result = $GLOBALS['TYPO3_DB']->exec_SELECTquery(
+                'tx_dlf_structures.thumbnail AS thumbnail',
+                'tx_dlf_structures',
+                'tx_dlf_structures.pid='.intval($cPid).' AND tx_dlf_structures.index_name='.$GLOBALS['TYPO3_DB']->fullQuoteStr($metadata['type'][0], 'tx_dlf_structures').tx_dlf_helper::whereClause('tx_dlf_structures'),
+                '',
+                '',
+                '1'
+            );
 
-			if ($GLOBALS['TYPO3_DB']->sql_num_rows($result) > 0) {
+            if ($GLOBALS['TYPO3_DB']->sql_num_rows($result) > 0) {
 
-				$resArray = $GLOBALS['TYPO3_DB']->sql_fetch_assoc($result);
+                $resArray = $GLOBALS['TYPO3_DB']->sql_fetch_assoc($result);
 
-				// Get desired thumbnail structure if not the toplevel structure itself.
-				if (!empty($resArray['thumbnail'])) {
+                // Get desired thumbnail structure if not the toplevel structure itself.
+                if (!empty($resArray['thumbnail'])) {
 
-					$strctType = tx_dlf_helper::getIndexName($resArray['thumbnail'], 'tx_dlf_structures', $cPid);
+                    $strctType = tx_dlf_helper::getIndexName($resArray['thumbnail'], 'tx_dlf_structures', $cPid);
 
-					// Check if this document has a structure element of the desired type.
-					$strctIds = $this->mets->xpath('./mets:structMap[@TYPE="LOGICAL"]//mets:div[@TYPE="'.$strctType.'"]/@ID');
+                    // Check if this document has a structure element of the desired type.
+                    $strctIds = $this->mets->xpath('./mets:structMap[@TYPE="LOGICAL"]//mets:div[@TYPE="'.$strctType.'"]/@ID');
 
-					if (!empty($strctIds)) {
+                    if (!empty($strctIds)) {
 
-						$strctId = (string) $strctIds[0];
+                        $strctId = (string) $strctIds[0];
 
-					}
+                    }
 
-				}
+                }
 
-				// Load smLinks.
-				$this->_getSmLinks();
+                // Load smLinks.
+                $this->_getSmLinks();
 
-				// Get thumbnail location.
-				if ($this->_getPhysicalStructure() && !empty($this->smLinks['l2p'][$strctId])) {
+                // Get thumbnail location.
+                if ($this->_getPhysicalStructure() && !empty($this->smLinks['l2p'][$strctId])) {
 
-					$this->thumbnail = $this->getFileLocation($this->physicalStructureInfo[$this->smLinks['l2p'][$strctId][0]]['files'][$extConf['fileGrpThumbs']]);
+                    $this->thumbnail = $this->getFileLocation($this->physicalStructureInfo[$this->smLinks['l2p'][$strctId][0]]['files'][$extConf['fileGrpThumbs']]);
 
-				} else {
+                } else {
 
-					$this->thumbnail = $this->getFileLocation($this->physicalStructureInfo[$this->physicalStructure[1]]['files'][$extConf['fileGrpThumbs']]);
+                    $this->thumbnail = $this->getFileLocation($this->physicalStructureInfo[$this->physicalStructure[1]]['files'][$extConf['fileGrpThumbs']]);
 
-				}
+                }
 
-			} elseif (TYPO3_DLOG) {
+            } elseif (TYPO3_DLOG) {
 
-				\TYPO3\CMS\Core\Utility\GeneralUtility::devLog('[tx_dlf_document->_getThumbnail()] No structure of type "'.$metadata['type'][0].'" found in database', self::$extKey, SYSLOG_SEVERITY_ERROR);
+                \TYPO3\CMS\Core\Utility\GeneralUtility::devLog('[tx_dlf_document->_getThumbnail()] No structure of type "'.$metadata['type'][0].'" found in database', self::$extKey, SYSLOG_SEVERITY_ERROR);
 
-			}
+            }
 
-			$this->thumbnailLoaded = TRUE;
+            $this->thumbnailLoaded = TRUE;
 
-		}
+        }
 
-		return $this->thumbnail;
+        return $this->thumbnail;
 
-	}
+    }
 
-	/**
-	 * This returns the ID of the toplevel logical structure node
-	 *
-	 * @access	protected
-	 *
-	 * @return	string		The logical structure node's ID
-	 */
-	protected function _getToplevelId() {
+    /**
+     * This returns the ID of the toplevel logical structure node
+     *
+     * @access	protected
+     *
+     * @return	string		The logical structure node's ID
+     */
+    protected function _getToplevelId() {
 
-		if (empty($this->toplevelId)) {
+        if (empty($this->toplevelId)) {
 
-			// Get all logical structure nodes with metadata, but without associated METS-Pointers.
-			if (($divs = $this->mets->xpath('./mets:structMap[@TYPE="LOGICAL"]//mets:div[@DMDID and not(./mets:mptr)]'))) {
+            // Get all logical structure nodes with metadata, but without associated METS-Pointers.
+            if (($divs = $this->mets->xpath('./mets:structMap[@TYPE="LOGICAL"]//mets:div[@DMDID and not(./mets:mptr)]'))) {
 
-				// Load smLinks.
-				$this->_getSmLinks();
+                // Load smLinks.
+                $this->_getSmLinks();
 
-				foreach ($divs as $div) {
+                foreach ($divs as $div) {
 
-					$id = (string) $div['ID'];
+                    $id = (string) $div['ID'];
 
-					// Are there physical structure nodes for this logical structure?
-					if (array_key_exists($id, $this->smLinks['l2p'])) {
+                    // Are there physical structure nodes for this logical structure?
+                    if (array_key_exists($id, $this->smLinks['l2p'])) {
 
-						// Yes. That's what we're looking for.
-						$this->toplevelId = $id;
+                        // Yes. That's what we're looking for.
+                        $this->toplevelId = $id;
 
-						break;
+                        break;
 
-					} elseif (empty($this->toplevelId)) {
+                    } elseif (empty($this->toplevelId)) {
 
-						// No. Remember this anyway, but keep looking for a better one.
-						$this->toplevelId = $id;
+                        // No. Remember this anyway, but keep looking for a better one.
+                        $this->toplevelId = $id;
 
-					}
+                    }
 
-				}
+                }
 
-			}
+            }
 
-		}
+        }
 
-		return $this->toplevelId;
+        return $this->toplevelId;
 
-	}
+    }
 
-	/**
-	 * This returns $this->uid via __get()
-	 *
-	 * @access	protected
-	 *
-	 * @return	mixed		The UID or the URL of the document
-	 */
-	protected function _getUid() {
+    /**
+     * This returns $this->uid via __get()
+     *
+     * @access	protected
+     *
+     * @return	mixed		The UID or the URL of the document
+     */
+    protected function _getUid() {
 
-		return $this->uid;
+        return $this->uid;
 
-	}
+    }
 
-	/**
-	 * This sets $this->cPid via __set()
-	 *
-	 * @access	protected
-	 *
-	 * @param	integer		$value: The new PID for the metadata definitions
-	 *
-	 * @return	void
-	 */
-	protected function _setCPid($value) {
+    /**
+     * This sets $this->cPid via __set()
+     *
+     * @access	protected
+     *
+     * @param	integer		$value: The new PID for the metadata definitions
+     *
+     * @return	void
+     */
+    protected function _setCPid($value) {
 
-		$this->cPid = max(intval($value), 0);
+        $this->cPid = max(intval($value), 0);
 
-	}
+    }
 
-	/**
-	 * This magic method is invoked each time a clone is called on the object variable
-	 * (This method is defined as private/protected because singleton objects should not be cloned)
-	 *
-	 * @access	protected
-	 *
-	 * @return	void
-	 */
-	protected function __clone() {}
+    /**
+     * This magic method is invoked each time a clone is called on the object variable
+     * (This method is defined as private/protected because singleton objects should not be cloned)
+     *
+     * @access	protected
+     *
+     * @return	void
+     */
+    protected function __clone() {}
 
-	/**
-	 * This is a singleton class, thus the constructor should be private/protected
-	 *
-	 * @access	protected
-	 *
-	 * @param	integer		$uid: The UID of the document to parse or URL to XML file
-	 * @param	integer		$pid: If > 0, then only document with this PID gets loaded
-	 *
-	 * @return	void
-	 */
-	protected function __construct($uid, $pid) {
+    /**
+     * This is a singleton class, thus the constructor should be private/protected
+     *
+     * @access	protected
+     *
+     * @param	integer		$uid: The UID of the document to parse or URL to XML file
+     * @param	integer		$pid: If > 0, then only document with this PID gets loaded
+     *
+     * @return	void
+     */
+    protected function __construct($uid, $pid) {
 
-		// Prepare to check database for the requested document.
-		if (\TYPO3\CMS\Core\Utility\MathUtility::canBeInterpretedAsInteger($uid)) {
+        // Prepare to check database for the requested document.
+        if (\TYPO3\CMS\Core\Utility\MathUtility::canBeInterpretedAsInteger($uid)) {
 
-			$whereClause = 'tx_dlf_documents.uid='.intval($uid).tx_dlf_helper::whereClause('tx_dlf_documents');
+            $whereClause = 'tx_dlf_documents.uid='.intval($uid).tx_dlf_helper::whereClause('tx_dlf_documents');
 
-		} else {
+        } else {
 
-			// Cast to string for safety reasons.
-			$location = (string) $uid;
+            // Cast to string for safety reasons.
+            $location = (string) $uid;
 
-			// Try to load METS file.
-			if ($this->load($location)) {
+            // Try to load METS file.
+            if ($this->load($location)) {
 
-				// Initialize core METS object.
-				$this->init();
+                // Initialize core METS object.
+                $this->init();
 
-				if ($this->mets !== NULL) {
+                if ($this->mets !== NULL) {
 
-					// Check for METS object @ID.
-					if (!empty($this->mets['OBJID'])) {
+                    // Check for METS object @ID.
+                    if (!empty($this->mets['OBJID'])) {
 
-						$this->recordId = (string) $this->mets['OBJID'];
+                        $this->recordId = (string) $this->mets['OBJID'];
 
-					}
+                    }
 
-					// Get hook objects.
-					$hookObjects = tx_dlf_helper::getHookObjects('common/class.tx_dlf_document.php');
+                    // Get hook objects.
+                    $hookObjects = tx_dlf_helper::getHookObjects('common/class.tx_dlf_document.php');
 
-					// Apply hooks.
-					foreach($hookObjects as $hookObj) {
+                    // Apply hooks.
+                    foreach($hookObjects as $hookObj) {
 
-						if (method_exists($hookObj, 'construct_postProcessRecordId')) {
+                        if (method_exists($hookObj, 'construct_postProcessRecordId')) {
 
-							$hookObj->construct_postProcessRecordId($this->xml, $this->recordId);
+                            $hookObj->construct_postProcessRecordId($this->xml, $this->recordId);
 
-						}
+                        }
 
-					}
+                    }
 
-				} else {
+                } else {
 
-					// No METS part found.
-					return;
+                    // No METS part found.
+                    return;
 
-				}
+                }
 
-			} else {
+            } else {
 
-				// Loading failed.
-				return;
+                // Loading failed.
+                return;
 
-			}
+            }
 
-			if (!empty($this->recordId)) {
+            if (!empty($this->recordId)) {
 
-				$whereClause = 'tx_dlf_documents.record_id='.$GLOBALS['TYPO3_DB']->fullQuoteStr($this->recordId, 'tx_dlf_documents').tx_dlf_helper::whereClause('tx_dlf_documents');
+                $whereClause = 'tx_dlf_documents.record_id='.$GLOBALS['TYPO3_DB']->fullQuoteStr($this->recordId, 'tx_dlf_documents').tx_dlf_helper::whereClause('tx_dlf_documents');
 
-			} else {
+            } else {
 
-				// There is no record identifier and there should be no hit in the database.
-				$whereClause = '1=-1';
+                // There is no record identifier and there should be no hit in the database.
+                $whereClause = '1=-1';
 
-			}
+            }
 
-		}
+        }
 
-		// Check for PID if needed.
-		if ($pid) {
+        // Check for PID if needed.
+        if ($pid) {
 
-			$whereClause .= ' AND tx_dlf_documents.pid='.intval($pid);
+            $whereClause .= ' AND tx_dlf_documents.pid='.intval($pid);
 
-		}
+        }
 
-		// Get document PID and location from database.
-		$result = $GLOBALS['TYPO3_DB']->exec_SELECTquery(
-			'tx_dlf_documents.uid AS uid,tx_dlf_documents.pid AS pid,tx_dlf_documents.record_id AS record_id,tx_dlf_documents.partof AS partof,tx_dlf_documents.thumbnail AS thumbnail,tx_dlf_documents.location AS location',
-			'tx_dlf_documents',
-			$whereClause,
-			'',
-			'',
-			'1'
-		);
+        // Get document PID and location from database.
+        $result = $GLOBALS['TYPO3_DB']->exec_SELECTquery(
+            'tx_dlf_documents.uid AS uid,tx_dlf_documents.pid AS pid,tx_dlf_documents.record_id AS record_id,tx_dlf_documents.partof AS partof,tx_dlf_documents.thumbnail AS thumbnail,tx_dlf_documents.location AS location',
+            'tx_dlf_documents',
+            $whereClause,
+            '',
+            '',
+            '1'
+        );
 
-		if ($GLOBALS['TYPO3_DB']->sql_num_rows($result) > 0) {
+        if ($GLOBALS['TYPO3_DB']->sql_num_rows($result) > 0) {
 
-			list ($this->uid, $this->pid, $this->recordId, $this->parentId, $this->thumbnail, $this->location) = $GLOBALS['TYPO3_DB']->sql_fetch_row($result);
+            list ($this->uid, $this->pid, $this->recordId, $this->parentId, $this->thumbnail, $this->location) = $GLOBALS['TYPO3_DB']->sql_fetch_row($result);
 
-			$this->thumbnailLoaded = TRUE;
+            $this->thumbnailLoaded = TRUE;
 
-			// Load XML file if necessary...
-			if ($this->mets === NULL && $this->load($this->location)) {
+            // Load XML file if necessary...
+            if ($this->mets === NULL && $this->load($this->location)) {
 
-				// ...and set some basic properties.
-				$this->init();
+                // ...and set some basic properties.
+                $this->init();
 
-			}
+            }
 
-			// Do we have a METS object now?
-			if ($this->mets !== NULL) {
+            // Do we have a METS object now?
+            if ($this->mets !== NULL) {
 
-				// Set new location if necessary.
-				if (!empty($location)) {
+                // Set new location if necessary.
+                if (!empty($location)) {
 
-					$this->location = $location;
+                    $this->location = $location;
 
-				}
+                }
 
-				// Document ready!
-				$this->ready = TRUE;
+                // Document ready!
+                $this->ready = TRUE;
 
-			}
+            }
 
-		} elseif ($this->mets !== NULL) {
+        } elseif ($this->mets !== NULL) {
 
-			// Set location as UID for documents not in database.
-			$this->uid = $location;
+            // Set location as UID for documents not in database.
+            $this->uid = $location;
 
-			$this->location = $location;
+            $this->location = $location;
 
-			// Document ready!
-			$this->ready = TRUE;
+            // Document ready!
+            $this->ready = TRUE;
 
-		} else {
+        } else {
 
-			if (TYPO3_DLOG) {
+            if (TYPO3_DLOG) {
 
-				\TYPO3\CMS\Core\Utility\GeneralUtility::devLog('[tx_dlf_document->__construct('.$uid.', '.$pid.')] No document with UID "'.$uid.'" found or document not accessible', self::$extKey, SYSLOG_SEVERITY_ERROR);
+                \TYPO3\CMS\Core\Utility\GeneralUtility::devLog('[tx_dlf_document->__construct('.$uid.', '.$pid.')] No document with UID "'.$uid.'" found or document not accessible', self::$extKey, SYSLOG_SEVERITY_ERROR);
 
-			}
+            }
 
-		}
+        }
 
-	}
+    }
 
-	/**
-	 * This magic method is called each time an invisible property is referenced from the object
-	 *
-	 * @access	public
-	 *
-	 * @param	string		$var: Name of variable to get
-	 *
-	 * @return	mixed		Value of $this->$var
-	 */
-	public function __get($var) {
+    /**
+     * This magic method is called each time an invisible property is referenced from the object
+     *
+     * @access	public
+     *
+     * @param	string		$var: Name of variable to get
+     *
+     * @return	mixed		Value of $this->$var
+     */
+    public function __get($var) {
 
-		$method = '_get'.ucfirst($var);
+        $method = '_get'.ucfirst($var);
 
-		if (!property_exists($this, $var) || !method_exists($this, $method)) {
+        if (!property_exists($this, $var) || !method_exists($this, $method)) {
 
-			if (TYPO3_DLOG) {
+            if (TYPO3_DLOG) {
 
-				\TYPO3\CMS\Core\Utility\GeneralUtility::devLog('[tx_dlf_document->__get('.$var.')] There is no getter function for property "'.$var.'"', self::$extKey, SYSLOG_SEVERITY_WARNING);
+                \TYPO3\CMS\Core\Utility\GeneralUtility::devLog('[tx_dlf_document->__get('.$var.')] There is no getter function for property "'.$var.'"', self::$extKey, SYSLOG_SEVERITY_WARNING);
 
-			}
+            }
 
-			return;
+            return;
 
-		} else {
+        } else {
 
-			return $this->$method();
+            return $this->$method();
 
-		}
+        }
 
-	}
+    }
 
-	/**
-	 * This magic method is called each time an invisible property is referenced from the object
-	 *
-	 * @access	public
-	 *
-	 * @param	string		$var: Name of variable to set
-	 * @param	mixed		$value: New value of variable
-	 *
-	 * @return	void
-	 */
-	public function __set($var, $value) {
+    /**
+     * This magic method is called each time an invisible property is referenced from the object
+     *
+     * @access	public
+     *
+     * @param	string		$var: Name of variable to set
+     * @param	mixed		$value: New value of variable
+     *
+     * @return	void
+     */
+    public function __set($var, $value) {
 
-		$method = '_set'.ucfirst($var);
+        $method = '_set'.ucfirst($var);
 
-		if (!property_exists($this, $var) || !method_exists($this, $method)) {
+        if (!property_exists($this, $var) || !method_exists($this, $method)) {
 
-			if (TYPO3_DLOG) {
+            if (TYPO3_DLOG) {
 
-				\TYPO3\CMS\Core\Utility\GeneralUtility::devLog('[tx_dlf_document->__set('.$var.', '.$value.')] There is no setter function for property "'.$var.'"', self::$extKey, SYSLOG_SEVERITY_WARNING);
+                \TYPO3\CMS\Core\Utility\GeneralUtility::devLog('[tx_dlf_document->__set('.$var.', '.$value.')] There is no setter function for property "'.$var.'"', self::$extKey, SYSLOG_SEVERITY_WARNING);
 
-			}
+            }
 
-		} else {
+        } else {
 
-			$this->$method($value);
+            $this->$method($value);
 
-		}
+        }
 
-	}
+    }
 
-	/**
-	 * This magic method is executed prior to any serialization of the object
-	 * @see __wakeup()
-	 *
-	 * @access	public
-	 *
-	 * @return	array		Properties to be serialized
-	 */
-	public function __sleep() {
+    /**
+     * This magic method is executed prior to any serialization of the object
+     * @see __wakeup()
+     *
+     * @access	public
+     *
+     * @return	array		Properties to be serialized
+     */
+    public function __sleep() {
 
-		// SimpleXMLElement objects can't be serialized, thus save the XML as string for serialization
-		$this->asXML = $this->xml->asXML();
+        // SimpleXMLElement objects can't be serialized, thus save the XML as string for serialization
+        $this->asXML = $this->xml->asXML();
 
-		return array ('uid', 'pid', 'recordId', 'parentId', 'asXML');
+        return array ('uid', 'pid', 'recordId', 'parentId', 'asXML');
 
-	}
+    }
 
-	/**
-	 * This magic method is used for setting a string value for the object
-	 *
-	 * @access	public
-	 *
-	 * @return	string		String representing the METS object
-	 */
-	public function __toString() {
+    /**
+     * This magic method is used for setting a string value for the object
+     *
+     * @access	public
+     *
+     * @return	string		String representing the METS object
+     */
+    public function __toString() {
 
-		$xml = new DOMDocument('1.0', 'utf-8');
+        $xml = new DOMDocument('1.0', 'utf-8');
 
-		$xml->appendChild($xml->importNode(dom_import_simplexml($this->mets), TRUE));
+        $xml->appendChild($xml->importNode(dom_import_simplexml($this->mets), TRUE));
 
-		$xml->formatOutput = TRUE;
+        $xml->formatOutput = TRUE;
 
-		return $xml->saveXML();
+        return $xml->saveXML();
 
-	}
+    }
 
-	/**
-	 * This magic method is executed after the object is deserialized
-	 * @see __sleep()
-	 *
-	 * @access	public
-	 *
-	 * @return	void
-	 */
-	public function __wakeup() {
+    /**
+     * This magic method is executed after the object is deserialized
+     * @see __sleep()
+     *
+     * @access	public
+     *
+     * @return	void
+     */
+    public function __wakeup() {
 
-		// Turn off libxml's error logging.
-		$libxmlErrors = libxml_use_internal_errors(TRUE);
+        // Turn off libxml's error logging.
+        $libxmlErrors = libxml_use_internal_errors(TRUE);
 
-		// Reload XML from string.
-		$xml = @simplexml_load_string($this->asXML);
+        // Reload XML from string.
+        $xml = @simplexml_load_string($this->asXML);
 
-		// Reset libxml's error logging.
-		libxml_use_internal_errors($libxmlErrors);
+        // Reset libxml's error logging.
+        libxml_use_internal_errors($libxmlErrors);
 
-		if ($xml !== FALSE) {
+        if ($xml !== FALSE) {
 
-			$this->asXML = '';
+            $this->asXML = '';
 
-			$this->xml = $xml;
+            $this->xml = $xml;
 
-			// Rebuild the unserializable properties.
-			$this->init();
+            // Rebuild the unserializable properties.
+            $this->init();
 
-		} else {
+        } else {
 
-			if (TYPO3_DLOG) {
+            if (TYPO3_DLOG) {
 
-				\TYPO3\CMS\Core\Utility\GeneralUtility::devLog('[tx_dlf_document->__wakeup()] Could not load XML after deserialization', self::$extKey, SYSLOG_SEVERITY_ERROR);
+                \TYPO3\CMS\Core\Utility\GeneralUtility::devLog('[tx_dlf_document->__wakeup()] Could not load XML after deserialization', self::$extKey, SYSLOG_SEVERITY_ERROR);
 
-			}
+            }
 
-		}
+        }
 
-	}
+    }
 
 }