TechDivision\Import\Configuration\Jms\Configuration

Complexity

Total Complexity

83

Size/Duplication

Total Lines	1091
Duplicated Lines	0 %

Coupling/Cohesion

Components	5
Dependencies	7

Importance

Changes

0

59 Methods

Rating	Name	Duplication	Size	Complexity
A	getPlugins()	0	14	3
A	mapBoolean()	0	11	2
A	getOperation()	0	4	1
A	getId()	0	4	1
A	setOperationName()	0	4	1
A	getOperationName()	0	4	1
A	setInstallationDir()	0	4	1
A	getInstallationDir()	0	4	1
A	setSourceDir()	0	4	1
A	getSourceDir()	0	4	1
A	setTargetDir()	0	4	1
A	getTargetDir()	0	4	1
A	setMagentoEdition()	0	4	1
A	getMagentoEdition()	0	4	1
A	setMagentoVersion()	0	4	1
A	getMagentoVersion()	0	4	1
A	getEntityTypeCode()	0	4	1
A	setEntityTypeCode()	0	4	1
A	getMultipleFieldDelimiter()	0	4	1
A	getMultipleValueDelimiter()	0	4	1
A	isStrictMode()	0	4	1
A	clearDatabases()	0	4	1
A	addDatabase()	0	4	1
A	countDatabases()	0	4	1
A	getDatabaseById()	0	14	4
A	getDatabasesByType()	0	17	4
A	isValidDatabaseType()	0	4	1
B	getDatabase()	0	24	6
A	getOperations()	0	4	1
A	getLoggers()	0	4	1
A	setArchiveArtefacts()	0	4	1
A	haveArchiveArtefacts()	0	4	1
A	setArchiveDir()	0	4	1
A	getArchiveDir()	0	4	1
A	setDebugMode()	0	4	1
A	isDebugMode()	0	4	1
A	setLogLevel()	0	4	1
A	getLogLevel()	0	4	1
A	setUseDbId()	0	4	1
A	getUseDbId()	0	4	1
A	setPidFilename()	0	4	1
A	getPidFilename()	0	4	1
A	setSystemName()	0	4	1
A	getSystemName()	0	4	1
A	setExtensionLibraries()	0	4	1
A	getExtensionLibraries()	0	4	1
A	getAdditionalVendorDirs()	0	4	1
B	postDeserialize()	0	28	6
A	getHeaderMappings()	0	14	2
A	getImageTypes()	0	14	2
A	setSingleTransaction()	0	4	1
A	isSingleTransaction()	0	4	1
A	setCacheEnabled()	0	4	1
A	isCacheEnabled()	0	4	1
A	setSerial()	0	4	1
A	getSerial()	0	4	1
A	getCaches()	0	11	2
A	getCacheByType()	0	14	3
A	getAliases()	0	4	1

<?php

/**
 * TechDivision\Import\Configuration\Jms\Configuration
 *
 * NOTICE OF LICENSE
 *
 * This source file is subject to the Open Software License (OSL 3.0)
 * that is available through the world-wide-web at this URL:
 * http://opensource.org/licenses/osl-3.0.php
 *
 * PHP version 5
 *
 * @author    Tim Wagner <t.wagner@techdivision.com>
 * @copyright 2016 TechDivision GmbH <info@techdivision.com>
 * @license   http://opensource.org/licenses/osl-3.0.php Open Software License (OSL 3.0)
 * @link      https://github.com/techdivision/import-configuration-jms
 * @link      http://www.techdivision.com
 */

namespace TechDivision\Import\Configuration\Jms;

use Psr\Log\LogLevel;
use JMS\Serializer\Annotation\Type;
use JMS\Serializer\Annotation\Exclude;
use JMS\Serializer\Annotation\SerializedName;
use JMS\Serializer\Annotation\PostDeserialize;
use JMS\Serializer\Annotation\ExclusionPolicy;
use Doctrine\Common\Collections\ArrayCollection;
use TechDivision\Import\ConfigurationInterface;
use TechDivision\Import\Configuration\DatabaseConfigurationInterface;
use TechDivision\Import\Configuration\Jms\Configuration\Operation;
use TechDivision\Import\Configuration\Jms\Configuration\ParamsTrait;
use TechDivision\Import\Configuration\Jms\Configuration\CsvTrait;
use TechDivision\Import\Configuration\Jms\Configuration\ListenersTrait;
use TechDivision\Import\Configuration\ListenerAwareConfigurationInterface;

/**
 * A simple JMS based configuration implementation.
 *
 * @author    Tim Wagner <t.wagner@techdivision.com>
 * @copyright 2016 TechDivision GmbH <info@techdivision.com>
 * @license   http://opensource.org/licenses/osl-3.0.php Open Software License (OSL 3.0)
 * @link      https://github.com/techdivision/import-configuration-jms
 * @link      http://www.techdivision.com
 *
 * @ExclusionPolicy("none")
 */
class Configuration implements ConfigurationInterface, ListenerAwareConfigurationInterface
{

    /**
     * The default PID filename to use.
     *
     * @var string
     */
    const PID_FILENAME = 'importer.pid';

    /**
     * Trait that provides CSV configuration functionality.
     *
     * @var \TechDivision\Import\Configuration\Jms\Configuration\CsvTrait
     */
    use CsvTrait;

    /**
     * Trait that provides CSV configuration functionality.
     *
     * @var \TechDivision\Import\Configuration\Jms\Configuration\ParamsTrait
     */
    use ParamsTrait;

    /**
     * Trait that provides CSV configuration functionality.
     *
     * @var \TechDivision\Import\Configuration\Jms\Configuration\ListenersTrait
     */
    use ListenersTrait;

    /**
     * The array with the available database types.
     *
     * @var array
     * @Exclude
     */
    protected $availableDatabaseTypes = array(
        DatabaseConfigurationInterface::TYPE_MYSQL,
        DatabaseConfigurationInterface::TYPE_REDIS
    );

    /**
     * Mapping for boolean values passed on the console.
     *
     * @var array
     * @Exclude
     */
    protected $booleanMapping = array(
        'true'  => true,
        'false' => false,
        '1'     => true,
        '0'     => false,
        'on'    => true,
        'off'   => false
    );

    /**
     * The serial that will be passed as commandline option (can not be specified in configuration file).
     *
     * @var string
     * @Exclude
     */
    protected $serial;

    /**
     * The application's unique DI identifier.
     *
     * @var string
     * @Type("string")
     * @SerializedName("id")
     */
    protected $id;

    /**
     * The system name to use.
     *
     * @var string
     * @Type("string")
     * @SerializedName("system-name")
     */
    protected $systemName;

    /**
     * The operation name to use.
     *
     * @var string
     * @Type("string")
     * @SerializedName("operation-name")
     */
    protected $operationName;

    /**
     * The entity type code to use.
     *
     * @var string
     * @Type("string")
     * @SerializedName("entity-type-code")
     */
    protected $entityTypeCode;

    /**
     * The Magento installation directory.
     *
     * @var string
     * @Type("string")
     * @SerializedName("installation-dir")
     */
    protected $installationDir;

    /**
     * The source directory that has to be watched for new files.
     *
     * @var string
     * @Type("string")
     * @SerializedName("source-dir")
     */
    protected $sourceDir;

    /**
     * The target directory with the files that has been imported.
     *
     * @var string
     * @Type("string")
     * @SerializedName("target-dir")
     */
    protected $targetDir;

    /**
     * The Magento edition, EE or CE.
     *
     * @var string
     * @Type("string")
     * @SerializedName("magento-edition")
     */
    protected $magentoEdition = 'CE';

    /**
     * The Magento version, e. g. 2.1.0.
     *
     * @var string
     * @Type("string")
     * @SerializedName("magento-version")
     */
    protected $magentoVersion = '2.1.2';

    /**
     * ArrayCollection with the information of the configured databases.
     *
     * @var \Doctrine\Common\Collections\ArrayCollection
     * @Type("ArrayCollection<TechDivision\Import\Configuration\Jms\Configuration\Database>")
     */
    protected $databases;

    /**
     * ArrayCollection with the information of the configured loggers.
     *
     * @var \Doctrine\Common\Collections\ArrayCollection
     * @Type("ArrayCollection<TechDivision\Import\Configuration\Jms\Configuration\Logger>")
     */
    protected $loggers;

    /**
     * ArrayCollection with the information of the configured operations.
     *
     * @var \Doctrine\Common\Collections\ArrayCollection
     * @Type("ArrayCollection<TechDivision\Import\Configuration\Jms\Configuration\Operation>")
     */
    protected $operations;

    /**
     * The subject's multiple field delimiter character for fields with multiple values, defaults to (,).
     *
     * @var string
     * @Type("string")
     * @SerializedName("multiple-field-delimiter")
     */
    protected $multipleFieldDelimiter = ',';

    /**
     * The subject's multiple value delimiter character for fields with multiple values, defaults to (|).
     *
     * @var string
     * @Type("string")
     * @SerializedName("multiple-value-delimiter")
     */
    protected $multipleValueDelimiter = '|';

    /**
     * The flag to signal that the subject has to use the strict mode or not.
     *
     * @var boolean
     * @Type("boolean")
     * @SerializedName("strict-mode")
     */
    protected $strictMode;

    /**
     * The flag whether or not the import artefacts have to be archived.
     *
     * @var boolean
     * @Type("boolean")
     * @SerializedName("archive-artefacts")
     */
    protected $archiveArtefacts;

    /**
     * The directory where the archives will be stored.
     *
     * @var string
     * @Type("string")
     * @SerializedName("archive-dir")
     */
    protected $archiveDir;

    /**
     * The flag to signal that the subject has to use the debug mode or not.
     *
     * @var boolean
     * @Type("boolean")
     * @SerializedName("debug-mode")
     */
    protected $debugMode = false;

    /**
     * The log level to use (see Monolog documentation).
     *
     * @var string
     * @Type("string")
     * @SerializedName("log-level")
     */
    protected $logLevel = LogLevel::INFO;

    /**
     * The explicit DB ID to use.
     *
     * @var string
     * @Type("string")
     * @SerializedName("use-db-id")
     */
    protected $useDbId;

    /**
     * The explicit PID filename to use.
     *
     * @var string
     * @Type("string")
     * @SerializedName("pid-filename")
     */
    protected $pidFilename;

    /**
     * The collection with the paths to additional vendor directories.
     *
     * @var \Doctrine\Common\Collections\ArrayCollection
     * @Type("ArrayCollection<TechDivision\Import\Configuration\Jms\Configuration\VendorDir>")
     * @SerializedName("additional-vendor-dirs")
     */
    protected $additionalVendorDirs;

    /**
     * The array with the Magento Edition specific extension libraries.
     *
     * @var array
     * @Type("array")
     * @SerializedName("extension-libraries")
     */
    protected $extensionLibraries = array();

    /**
     * The array with the custom header mappings.
     *
     * @var array
     * @Type("array")
     * @SerializedName("header-mappings")
     */
    protected $headerMappings = array();

    /**
     * The array with the custom image types.
     *
     * @var array
     * @Type("array")
     * @SerializedName("image-types")
     */
    protected $imageTypes = array();

    /**
     * The flag to signal that the import should be wrapped within a single transation or not.
     *
     * @var boolean
     * @Type("boolean")
     * @SerializedName("single-transaction")
     */
    protected $singleTransaction = false;

    /**
     * The flag to signal that the cache should be enabled or not.
     *
     * @var boolean
     * @Type("boolean")
     * @SerializedName("cache-enabled")
     */
    protected $cacheEnabled = true;

    /**
     * ArrayCollection with the information of the configured aliases.
     *
     * @var \Doctrine\Common\Collections\ArrayCollection
     * @Type("ArrayCollection<TechDivision\Import\Configuration\Jms\Configuration\Alias>")
     */
    protected $aliases;

    /**
     * ArrayCollection with the information of the configured caches.
     *
     * @var \Doctrine\Common\Collections\ArrayCollection
     * @Type("ArrayCollection<TechDivision\Import\Configuration\Jms\Configuration\Cache>")
     */
    protected $caches;

    /**
     * Return's the array with the plugins of the operation to use.
     *
     * @return \Doctrine\Common\Collections\ArrayCollection The ArrayCollection with the plugins
     * @throws \Exception Is thrown, if no plugins are available for the actual operation
     */
    public function getPlugins()
    {

        // iterate over the operations and return the subjects of the actual one
        /** @var TechDivision\Import\Configuration\OperationInterface $operation */
        foreach ($this->getOperations() as $operation) {
            if ($this->getOperation()->equals($operation)) {
                return $operation->getPlugins();
            }
        }

        // throw an exception if no plugins are available
        throw new \Exception(sprintf('Can\'t find any plugins for operation %s', $this->getOperation()));
    }

    /**
     * Map's the passed value to a boolean.
     *
     * @param string $value The value to map
     *
     * @return boolean The mapped value
     * @throws \Exception Is thrown, if the value can't be mapped
     */
    public function mapBoolean($value)
    {

        // try to map the passed value to a boolean
        if (isset($this->booleanMapping[$val = strtolower($value)])) {
            return $this->booleanMapping[$val];
        }

        // throw an exception if we can't convert the passed value
        throw new \Exception(sprintf('Can\'t convert %s to boolean', $value));
    }

    /**
     * Return's the operation, initialize from the actual operation name.
     *
     * @return \TechDivision\Import\Configuration\OperationConfigurationInterface The operation instance
     */
    public function getOperation()
    {
        return new Operation($this->getOperationName());
    }

    /**
     * Return's the application's unique DI identifier.
     *
     * @return string The application's unique DI identifier
     */
    public function getId()
    {
        return $this->id;
    }

    /**
     * Return's the operation name that has to be used.
     *
     * @param string $operationName The operation name that has to be used
     *
     * @return void
     */
    public function setOperationName($operationName)
    {
        return $this->operationName = $operationName;
    }

    /**
     * Return's the operation name that has to be used.
     *
     * @return string The operation name that has to be used
     */
    public function getOperationName()
    {
        return $this->operationName;
    }

    /**
     * Set's the Magento installation directory.
     *
     * @param string $installationDir The Magento installation directory
     *
     * @return void
     */
    public function setInstallationDir($installationDir)
    {
        $this->installationDir = $installationDir;
    }

    /**
     * Return's the Magento installation directory.
     *
     * @return string The Magento installation directory
     */
    public function getInstallationDir()
    {
        return $this->installationDir;
    }

    /**
     * Set's the source directory that has to be watched for new files.
     *
     * @param string $sourceDir The source directory
     *
     * @return void
     */
    public function setSourceDir($sourceDir)
    {
        $this->sourceDir = $sourceDir;
    }

    /**
     * Return's the source directory that has to be watched for new files.
     *
     * @return string The source directory
     */
    public function getSourceDir()
    {
        return $this->sourceDir;
    }

    /**
     * Set's the target directory with the files that has been imported.
     *
     * @param string $targetDir The target directory
     *
     * @return void
     */
    public function setTargetDir($targetDir)
    {
        $this->targetDir = $targetDir;
    }

    /**
     * Return's the target directory with the files that has been imported.
     *
     * @return string The target directory
     */
    public function getTargetDir()
    {
        return $this->targetDir;
    }

    /**
     * Set's the Magento edition, EE or CE.
     *
     * @param string $magentoEdition The Magento edition
     *
     * @return void
     */
    public function setMagentoEdition($magentoEdition)
    {
        $this->magentoEdition = $magentoEdition;
    }

    /**
     * Return's the Magento edition, EE or CE.
     *
     * @return string The Magento edition
     */
    public function getMagentoEdition()
    {
        return $this->magentoEdition;
    }

    /**
     * Return's the Magento version, e. g. 2.1.0.
     *
     * @param string $magentoVersion The Magento version
     *
     * @return void
     */
    public function setMagentoVersion($magentoVersion)
    {
        $this->magentoVersion = $magentoVersion;
    }

    /**
     * Return's the Magento version, e. g. 2.1.0.
     *
     * @return string The Magento version
     */
    public function getMagentoVersion()
    {
        return $this->magentoVersion;
    }

    /**
     * Return's the entity type code to be used.
     *
     * @return string The entity type code to be used
     */
    public function getEntityTypeCode()
    {
        return $this->entityTypeCode;
    }

    /**
     * Set's the entity type code to be used.
     *
     * @param string $entityTypeCode The entity type code
     *
     * @return void
     */
    public function setEntityTypeCode($entityTypeCode)
    {
        $this->entityTypeCode = $entityTypeCode;
    }

    /**
     * Return's the multiple field delimiter character to use, default value is comma (,).
     *
     * @return string The multiple field delimiter character
     */
    public function getMultipleFieldDelimiter()
    {
        return $this->multipleFieldDelimiter;
    }

    /**
     * Return's the multiple value delimiter character to use, default value is comma (|).
     *
     * @return string The multiple value delimiter character
     */
    public function getMultipleValueDelimiter()
    {
        return $this->multipleValueDelimiter;
    }

    /**
     * Queries whether or not strict mode is enabled or not, default is TRUE.
     *
     * @return boolean TRUE if strict mode is enabled, else FALSE
     */
    public function isStrictMode()
    {
        return $this->strictMode;
    }

    /**
     * Remove's all configured database configuration.
     *
     * @return void
     */
    public function clearDatabases()
    {
        $this->databases->clear();
    }

    /**
     * Add's the passed database configuration.
     *
     * @param \TechDivision\Import\Configuration\DatabaseConfigurationInterface $database The database configuration
     *
     * @return void
     */
    public function addDatabase(DatabaseConfigurationInterface $database)
    {
        $this->databases->add($database);
    }

    /**
     * Return's the number database configurations.
     *
     * @return integer The number of database configurations
     */
    public function countDatabases()
    {
        return $this->databases->count();
    }

    /**
     * Return's the database configuration with the passed ID.
     *
     * @param string $id The ID of the database connection to return
     *
     * @return \TechDivision\Import\Configuration\DatabaseConfigurationInterface The database configuration
     * @throws \Exception Is thrown, if no database configuration is available
     */
    public function getDatabaseById($id)
    {

        // iterate over the configured databases and return the one with the passed ID
        /** @var TechDivision\Import\Configuration\DatabaseInterface  $database */
        foreach ($this->databases as $database) {
            if ($database->getId() === $id && $this->isValidDatabaseType($database)) {
                return $database;
            }
        }

        // throw an exception, if the database with the passed ID is NOT configured
        throw new \Exception(sprintf('Database with ID %s can not be found or has an invalid type', $id));
    }

    /**
     * Return's the databases for the given type.
     *
     * @param string $type The database type to return the configurations for
     *
     * @return \Doctrine\Common\Collections\Collection The collection with the database configurations
     */
    public function getDatabasesByType($type)
    {

        // initialize the collection for the database configurations
        $databases = new ArrayCollection();

        // iterate over the configured databases and return the one with the passed ID
        /** @var TechDivision\Import\Configuration\DatabaseInterface  $database */
        foreach ($this->databases as $database) {
            if ($database->getType() === $type && $this->isValidDatabaseType($database)) {
                $databases->add($database);
            }
        }

        // return the database configurations
        return $databases;
    }

    /**
     * Query's whether or not the passed database configuration has a valid type.
     *
     * @param \TechDivision\Import\Configuration\DatabaseConfigurationInterface $database The database configuration
     *
     * @return boolean TRUE if the passed database configuration has a valid type, else FALSE
     */
    protected function isValidDatabaseType(DatabaseConfigurationInterface $database)
    {
        return in_array(strtolower($database->getType()), $this->availableDatabaseTypes);
    }

    /**
     * Return's the database configuration.
     *
     * If an explicit DB ID is specified, the method tries to return the database with this ID. If
     * the database configuration is NOT available, an execption is thrown.
     *
     * If no explicit DB ID is specified, the method tries to return the default database configuration,
     * if not available the first one.
     *
     * @return \TechDivision\Import\Configuration\DatabaseConfigurationInterface The database configuration
     * @throws \Exception Is thrown, if no database configuration is available
     */
    public function getDatabase()
    {

        // if a DB ID has been set, try to load the database
        if ($useDbId = $this->getUseDbId()) {
            return $this->getDatabaseById($useDbId);
        }

        // iterate over the configured databases and try return the default database
        /** @var TechDivision\Import\Configuration\DatabaseInterface  $database */
        foreach ($this->databases as $database) {
            if ($database->isDefault() && $this->isValidDatabaseType($database)) {
                return $database;
            }
        }

        // try to return the first database configurtion
        if ($this->databases->count() > 0) {
            return $this->databases->first();
        }

        // throw an exception, if no database configuration is available
        throw new \Exception('There is no database configuration available');
    }

    /**
     * Return's the ArrayCollection with the configured operations.
     *
     * @return \Doctrine\Common\Collections\ArrayCollection The ArrayCollection with the operations
     */
    public function getOperations()
    {
        return $this->operations;
    }

    /**
     * Return's the ArrayCollection with the configured loggers.
     *
     * @return \Doctrine\Common\Collections\ArrayCollection The ArrayCollection with the loggers
     */
    public function getLoggers()
    {
        return $this->loggers;
    }

    /**
     * Set's the flag that import artefacts have to be archived or not.
     *
     * @param boolean $archiveArtefacts TRUE if artefacts have to be archived, else FALSE
     *
     * @return void
     */
    public function setArchiveArtefacts($archiveArtefacts)
    {
        $this->archiveArtefacts = $archiveArtefacts;
    }

    /**
     * Return's the TRUE if the import artefacts have to be archived.
     *
     * @return boolean TRUE if the import artefacts have to be archived
     */
    public function haveArchiveArtefacts()
    {
        return $this->archiveArtefacts;
    }

    /**
     * The directory where the archives will be stored.
     *
     * @param string $archiveDir The archive directory
     *
     * @return void
     */
    public function setArchiveDir($archiveDir)
    {
        $this->archiveDir = $archiveDir;
    }

    /**
     * The directory where the archives will be stored.
     *
     * @return string The archive directory
     */
    public function getArchiveDir()
    {
        return $this->archiveDir;
    }

    /**
     * Set's the debug mode.
     *
     * @param boolean $debugMode TRUE if debug mode is enabled, else FALSE
     *
     * @return void
     */
    public function setDebugMode($debugMode)
    {
        $this->debugMode = $debugMode;
    }

    /**
     * Queries whether or not debug mode is enabled or not, default is TRUE.
     *
     * @return boolean TRUE if debug mode is enabled, else FALSE
     */
    public function isDebugMode()
    {
        return $this->debugMode;
    }

    /**
     * Set's the log level to use.
     *
     * @param string $logLevel The log level to use
     *
     * @return void
     */
    public function setLogLevel($logLevel)
    {
        $this->logLevel = $logLevel;
    }

    /**
     * Return's the log level to use.
     *
     * @return string The log level to use
     */
    public function getLogLevel()
    {
        return $this->logLevel;
    }

    /**
     * Set's the explicit DB ID to use.
     *
     * @param string $useDbId The explicit DB ID to use
     *
     * @return void
     */
    public function setUseDbId($useDbId)
    {
        $this->useDbId = $useDbId;
    }

    /**
     * Return's the explicit DB ID to use.
     *
     * @return string The explicit DB ID to use
     */
    public function getUseDbId()
    {
        return $this->useDbId;
    }

    /**
     * Set's the PID filename to use.
     *
     * @param string $pidFilename The PID filename to use
     *
     * @return void
     */
    public function setPidFilename($pidFilename)
    {
        $this->pidFilename = $pidFilename;
    }

    /**
     * Return's the PID filename to use.
     *
     * @return string The PID filename to use
     */
    public function getPidFilename()
    {
        return $this->pidFilename;
    }

    /**
     * Set's the systemm name to be used.
     *
     * @param string $systemName The system name to be used
     *
     * @return void
     */
    public function setSystemName($systemName)
    {
        $this->systemName = $systemName;
    }

    /**
     * Return's the systemm name to be used.
     *
     * @return string The system name to be used
     */
    public function getSystemName()
    {
        return $this->systemName;
    }

    /**
     * Set's the collection with the path of the Magento Edition specific extension libraries.
     *
     * @param array $extensionLibraries The paths of the Magento Edition specific extension libraries
     *
     * @return void
     */
    public function setExtensionLibraries(array $extensionLibraries)
    {
        $this->extensionLibraries = $extensionLibraries;
    }

    /**
     * Return's an array with the path of the Magento Edition specific extension libraries.
     *
     * @return array The paths of the Magento Edition specific extension libraries
     */
    public function getExtensionLibraries()
    {
        return $this->extensionLibraries;
    }

    /**
     * Return's a collection with the path to additional vendor directories.
     *
     * @return \Doctrine\Common\Collections\ArrayCollection The paths to additional vendor directories
     */
    public function getAdditionalVendorDirs()
    {
        return $this->additionalVendorDirs;
    }

    /**
     * Lifecycle callback that will be invoked after deserialization.
     *
     * @return void
     * @PostDeserialize
     */
    public function postDeserialize()
    {

        // create an empty collection if no loggers has been specified
        if ($this->loggers === null) {
            $this->loggers = new ArrayCollection();
        }

        // create an empty collection if no operations has been specified
        if ($this->operations === null) {
            $this->operations = new ArrayCollection();
        }

        // create an empty collection if no additional venor directories has been specified
        if ($this->additionalVendorDirs === null) {
            $this->additionalVendorDirs = new ArrayCollection();
        }

        // create an empty collection if no caches has been specified
        if ($this->caches === null) {
            $this->caches = new ArrayCollection();
        }

        // create an empty collection if no aliases has been specified
        if ($this->aliases === null) {
            $this->aliases = new ArrayCollection();
        }
    }

    /**
     * The array with the subject's custom header mappings.
     *
     * @return array The custom header mappings
     */
    public function getHeaderMappings()
    {

        // initialize the array for the custom header mappings
        $headerMappings = array();

        // try to load the configured header mappings
        if ($headerMappingsAvailable = reset($this->headerMappings)) {
            $headerMappings = $headerMappingsAvailable;
        }

        // return the custom header mappings
        return $headerMappings;
    }

    /**
     * The array with the subject's custom image types.
     *
     * @return array The custom image types
     */
    public function getImageTypes()
    {

        // initialize the array for the custom image types
        $imageTypes = array();

        // try to load the configured image types
        if ($imageTypesAvailable = reset($this->imageTypes)) {
            $imageTypes = $imageTypesAvailable;
        }

        // return the custom image types
        return $imageTypes;
    }

    /**
     * Set's the flag that decides whether or not the import should be wrapped within a single transaction.
     *
     * @param boolean $singleTransaction TRUE if the import should be wrapped in a single transation, else FALSE
     *
     * @return void
     */
    public function setSingleTransaction($singleTransaction)
    {
        $this->singleTransaction = $singleTransaction;
    }

    /**
     * Whether or not the import should be wrapped within a single transation.
     *
     * @return boolean TRUE if the import should be wrapped in a single transation, else FALSE
     */
    public function isSingleTransaction()
    {
        return $this->singleTransaction;
    }

    /**
     * Set's the flag that decides whether or not the the cache has been enabled.
     *
     * @param boolean $cacheEnabled TRUE if the cache has been enabled, else FALSE
     *
     * @return void
     */
    public function setCacheEnabled($cacheEnabled)
    {
        $this->cacheEnabled = $cacheEnabled;
    }

    /**
     * Whether or not the cache functionality should be enabled.
     *
     * @return boolean TRUE if the cache has to be enabled, else FALSE
     */
    public function isCacheEnabled()
    {
        return $this->cacheEnabled;
    }

    /**
     * Set's the passed serial from the commandline to the configuration.
     *
     * @param string $serial The serial from the commandline
     *
     * @return void
     */
    public function setSerial($serial)
    {
        $this->serial = $serial;
    }

    /**
     * Return's the serial from the commandline.
     *
     * @return string The serial
     */
    public function getSerial()
    {
        return $this->serial;
    }

    /**
     * Return's the configuration for the caches.
     *
     * @return \Doctrine\Common\Collections\ArrayCollection The cache configurations
     */
    public function getCaches()
    {

        // iterate over the caches and set the parent configuration instance
        foreach ($this->caches as $cache) {
            $cache->setConfiguration($this);
        }

        // return the array with the caches
        return $this->caches;
    }

    /**
     * Return's the cache configuration for the passed type.
     *
     * @param string $type The cache type to return the configuation for
     *
     * @return \TechDivision\Import\Configuration\CacheConfigurationInterface The cache configuration
     */
    public function getCacheByType($type)
    {

        // load the available cache configurations
        $caches = $this->getCaches();

        // try to load the cache for the passed type
        /** @var \TechDivision\Import\Configuration\CacheConfigurationInterface $cache */
        foreach ($caches as $cache) {
            if ($cache->getType() === $type) {
                return $cache;
            }
        }
    }

    /**
     * Return's the alias configuration.
     *
     * @return \Doctrine\Common\Collections\ArrayCollection The alias configuration
     */
    public function getAliases()
    {
        return $this->aliases;
    }
}