insideout10 / wordlift-plugin

src/includes/class-wordlift-schema-service.php

Indentation +578 added lines, -578 removed lines

@@ -7,600 +7,600 @@
  */
 class Wordlift_Schema_Service {
 
-	/**
-	 * The 'author' field name.
-	 *
-	 * @since 3.1.0
-	 */
-	const FIELD_AUTHOR = 'wl_author';
-
-	/**
-	 * The 'same as' field name.
-	 *
-	 * @since 3.1.0
-	 */
-	const FIELD_SAME_AS = 'entity_same_as';
-
-	/**
-	 * The 'date start' field name.
-	 *
-	 * @since 3.1.0
-	 */
-	const FIELD_DATE_START = 'wl_cal_date_start';
-
-	/**
-	 * The 'date end' field name.
-	 *
-	 * @since 3.1.0
-	 */
-	const FIELD_DATE_END = 'wl_cal_date_end';
-
-	/**
-	 * The 'location' field name.
-	 *
-	 * @since 3.1.0
-	 */
-	const FIELD_LOCATION = 'wl_location';
-
-	/**
-	 * The 'founder' field name.
-	 *
-	 * @since 3.1.0
-	 */
-	const FIELD_FOUNDER = 'wl_founder';
-
-	/**
-	 * The 'knows' field name.
-	 *
-	 * @since 3.1.0
-	 */
-	const FIELD_KNOWS = 'wl_knows';
-
-	/**
-	 * The 'birth date' field name.
-	 *
-	 * @since 3.1.0
-	 */
-	const FIELD_BIRTH_DATE = 'wl_birth_date';
-
-	/**
-	 * The 'birth place' field name.
-	 *
-	 * @since 3.1.0
-	 */
-	const FIELD_BIRTH_PLACE = 'wl_birth_place';
-
-	/**
-	 * The 'latitude' field name.
-	 *
-	 * @since 3.1.0
-	 */
-	const FIELD_GEO_LATITUDE = 'wl_geo_latitude';
-
-	/**
-	 * The 'longitude' field name.
-	 *
-	 * @since 3.1.0
-	 */
-	const FIELD_GEO_LONGITUDE = 'wl_geo_longitude';
-
-	/**
-	 * The 'address' field name.
-	 *
-	 * @since 3.1.0
-	 */
-	const FIELD_ADDRESS = 'wl_address';
-
-	/**
-	 * The 'entity type' field name.
-	 *
-	 * @since 3.1.0
-	 */
-	const FIELD_ENTITY_TYPE = 'wl_entity_type_uri';
+    /**
+     * The 'author' field name.
+     *
+     * @since 3.1.0
+     */
+    const FIELD_AUTHOR = 'wl_author';
+
+    /**
+     * The 'same as' field name.
+     *
+     * @since 3.1.0
+     */
+    const FIELD_SAME_AS = 'entity_same_as';
+
+    /**
+     * The 'date start' field name.
+     *
+     * @since 3.1.0
+     */
+    const FIELD_DATE_START = 'wl_cal_date_start';
+
+    /**
+     * The 'date end' field name.
+     *
+     * @since 3.1.0
+     */
+    const FIELD_DATE_END = 'wl_cal_date_end';
+
+    /**
+     * The 'location' field name.
+     *
+     * @since 3.1.0
+     */
+    const FIELD_LOCATION = 'wl_location';
+
+    /**
+     * The 'founder' field name.
+     *
+     * @since 3.1.0
+     */
+    const FIELD_FOUNDER = 'wl_founder';
+
+    /**
+     * The 'knows' field name.
+     *
+     * @since 3.1.0
+     */
+    const FIELD_KNOWS = 'wl_knows';
+
+    /**
+     * The 'birth date' field name.
+     *
+     * @since 3.1.0
+     */
+    const FIELD_BIRTH_DATE = 'wl_birth_date';
+
+    /**
+     * The 'birth place' field name.
+     *
+     * @since 3.1.0
+     */
+    const FIELD_BIRTH_PLACE = 'wl_birth_place';
+
+    /**
+     * The 'latitude' field name.
+     *
+     * @since 3.1.0
+     */
+    const FIELD_GEO_LATITUDE = 'wl_geo_latitude';
+
+    /**
+     * The 'longitude' field name.
+     *
+     * @since 3.1.0
+     */
+    const FIELD_GEO_LONGITUDE = 'wl_geo_longitude';
+
+    /**
+     * The 'address' field name.
+     *
+     * @since 3.1.0
+     */
+    const FIELD_ADDRESS = 'wl_address';
+
+    /**
+     * The 'entity type' field name.
+     *
+     * @since 3.1.0
+     */
+    const FIELD_ENTITY_TYPE = 'wl_entity_type_uri';
 	
-	/**
-	 * The 'email' field name.
-	 *
-	 * @since 3.2.0
-	 */
-	const FIELD_EMAIL = 'wl_email';
+    /**
+     * The 'email' field name.
+     *
+     * @since 3.2.0
+     */
+    const FIELD_EMAIL = 'wl_email';
 	
-	/**
-	 * The 'affiliation' field name.
-	 *
-	 * @since 3.2.0
-	 */
-	const FIELD_AFFILIATION = 'wl_affiliation';
-
-	/**
-	 * The 'URI' data type name.
-	 *
-	 * @since 3.1.0
-	 */
-	const DATA_TYPE_URI = 'uri';
-
-	/**
-	 * The 'date' data type name.
-	 *
-	 * @since 3.1.0
-	 */
-	const DATA_TYPE_DATE = 'date';
-
-	/**
-	 * The 'double' data type name.
-	 *
-	 * @since 3.1.0
-	 */
-	const DATA_TYPE_DOUBLE = 'double';
-
-	/**
-	 * The 'string' data type name.
-	 *
-	 * @since 3.1.0
-	 */
-	const DATA_TYPE_STRING = 'string';
-
-	/**
-	 * The 'integer' data type name.
-	 *
-	 * @since 3.1.0
-	 */
-	const DATA_TYPE_INTEGER = 'int';
-
-	/**
-	 * The 'boolean' data type name.
-	 *
-	 * @since 3.1.0
-	 */
-	const DATA_TYPE_BOOLEAN = 'bool';
-
-	/**
-	 * The schema.org Event type URI.
-	 *
-	 * @since 3.1.0
-	 */
-	const SCHEMA_EVENT_TYPE = 'http://schema.org/Event';
-
-	/**
-	 * The Schema service singleton instance.
-	 *
-	 * @since 3.1.0
-	 * @access private
-	 * @var \Wordlift_Schema_Service $instance The Schema service singleton instance.
-	 */
-	private static $instance;
-
-	/**
-	 * WordLift's schema.
-	 *
-	 * @since 3.1.0
-	 * @access private
-	 * @var array $schema WordLift's schema.
-	 */
-	private $schema;
-
-	/**
-	 * The Log service.
-	 *
-	 * @since 3.1.0
-	 * @access private
-	 * @var \Wordlift_Log_Service $log_service The Log service.
-	 */
-	private $log_service;
-
-	/**
-	 * Wordlift_Schema_Service constructor.
-	 *
-	 * @since 3.1.0
-	 */
-	public function __construct() {
-
-		$this->log_service = Wordlift_Log_Service::get_logger( 'Wordlift_Schema_Service' );
-
-		// Create a singleton instance of the Schema service, useful to provide static functions to global functions.
-		self::$instance = $this;
-
-		// Set the taxonomy data.
-		// Note: parent types must be defined before child types.
-		$this->schema = array(
-			'thing'         => $this->get_thing_schema(),
-			'creative-work' => $this->get_creative_work_schema(),
-			'event'         => $this->get_event_schema(),
-			'organization'  => $this->get_organization_schema(),
-			'person'        => $this->get_person_schema(),
-			'place'         => $this->get_place_schema(),
-			'localbusiness' => $this->get_local_business_schema()
-		);
-
-	}
-
-	/**
-	 * Get a reference to the Schema service.
-	 *
-	 * @since 3.1.0
-	 *
-	 * @return Wordlift_Schema_Service A reference to the Schema service.
-	 */
-	public static function get_instance() {
-
-		return self::$instance;
-	}
-
-	/**
-	 * Get the WordLift's schema.
-	 *
-	 * @param string $name The schema name.
-	 *
-	 * @return array|null An array with the schema configuration or NULL if the schema is not found.
-	 *
-	 * @since 3.1.0
-	 */
-	public function get_schema( $name ) {
-
-		// $this->log_service->trace( "Get schema [ name :: $name ]" );
-
-		// Check if the schema exists and, if not, return NULL.
-		if ( ! isset( $this->schema[ $name ] ) ) {
-			return null;
-		}
-
-		// Return the requested schema.
-		return $this->schema[ $name ];
-	}
-
-	/**
-	 * Get the 'thing' schema.
-	 *
-	 * @return array An array with the schema configuration.
-	 *
-	 * @since 3.1.0
-	 */
-	private function get_thing_schema() {
-
-		return array(
-			'css_class'          => 'wl-thing',
-			'uri'                => 'http://schema.org/Thing',
-			'same_as'            => array( '*' ), // set as default.
-			'custom_fields'      => array(
-				self::FIELD_SAME_AS => array(
-					'predicate'   => 'http://schema.org/sameAs',
-					'type'        => self::DATA_TYPE_URI,
-					'export_type' => 'http://schema.org/Thing',
-					'constraints' => array(
-						'cardinality' => INF
-					),
-					'input_field' => 'sameas'   // we need a custom metabox
-				)
-			),
-			// {{sameAs}} not present in the microdata template,
-			// because it is treated separately in *wl_content_embed_item_microdata*
-			'microdata_template' => '',
-			'templates'          => array(
-				'subtitle' => '{{id}}'
-			)
-		);
-
-	}
-
-	/**
-	 * Get the 'creative work' schema.
-	 *
-	 * @return array An array with the schema configuration.
-	 *
-	 * @since 3.1.0
-	 */
-	private function get_creative_work_schema() {
-
-		$schema = array(
-			'label'              => 'CreativeWork',
-			'description'        => 'A creative work (or a Music Album).',
-			'parents'            => array( 'thing' ), // give term slug as parent
-			'css_class'          => 'wl-creative-work',
-			'uri'                => 'http://schema.org/CreativeWork',
-			'same_as'            => array(
-				'http://schema.org/MusicAlbum',
-				'http://schema.org/Product'
-			),
-			'custom_fields'      => array(
-				self::FIELD_AUTHOR => array(
-					'predicate'   => 'http://schema.org/author',
-					'type'        => self::DATA_TYPE_URI,
-					'export_type' => 'http://schema.org/Person',
-					'constraints' => array(
-						'uri_type'    => array( 'Person', 'Organization' ),
-						'cardinality' => INF
-					)
-				),
-			),
-			'microdata_template' => '{{author}}',
-			'templates'          => array(
-				'subtitle' => '{{id}}'
-			)
-		);
-
-		// Merge the custom fields with those provided by the thing schema.
-		$thing_schema            = $this->get_thing_schema();
-		$schema['custom_fields'] = array_merge( $schema['custom_fields'], $thing_schema['custom_fields'] );
-
-		return $schema;
-	}
-
-	/**
-	 * Get the 'event' schema.
-	 *
-	 * @return array An array with the schema configuration.
-	 *
-	 * @since 3.1.0
-	 */
-	private function get_event_schema() {
-
-		$schema = array(
-			'label'              => 'Event',
-			'description'        => 'An event . ',
-			'parents'            => array( 'thing' ),
-			'css_class'          => 'wl-event',
-			'uri'                => self::SCHEMA_EVENT_TYPE,
-			'same_as'            => array( 'http://dbpedia.org/ontology/Event' ),
-			'custom_fields'      => array(
-				self::FIELD_DATE_START => array(
-					'predicate'   => 'http://schema.org/startDate',
-					'type'        => self::DATA_TYPE_DATE,
-					'export_type' => 'xsd:datetime',
-					'constraints' => ''
-				),
-				self::FIELD_DATE_END   => array(
-					'predicate'   => 'http://schema.org/endDate',
-					'type'        => self::DATA_TYPE_DATE,
-					'export_type' => 'xsd:datetime',
-					'constraints' => ''
-				),
-				self::FIELD_LOCATION   => array(
-					'predicate'   => 'http://schema.org/location',
-					'type'        => self::DATA_TYPE_URI,
-					'export_type' => 'http://schema.org/PostalAddress',
-					'constraints' => array(
-						'uri_type'    => 'Place',
-						'cardinality' => INF
-					)
-				)
-			),
-			'microdata_template' =>
-				'{{startDate}}
+    /**
+     * The 'affiliation' field name.
+     *
+     * @since 3.2.0
+     */
+    const FIELD_AFFILIATION = 'wl_affiliation';
+
+    /**
+     * The 'URI' data type name.
+     *
+     * @since 3.1.0
+     */
+    const DATA_TYPE_URI = 'uri';
+
+    /**
+     * The 'date' data type name.
+     *
+     * @since 3.1.0
+     */
+    const DATA_TYPE_DATE = 'date';
+
+    /**
+     * The 'double' data type name.
+     *
+     * @since 3.1.0
+     */
+    const DATA_TYPE_DOUBLE = 'double';
+
+    /**
+     * The 'string' data type name.
+     *
+     * @since 3.1.0
+     */
+    const DATA_TYPE_STRING = 'string';
+
+    /**
+     * The 'integer' data type name.
+     *
+     * @since 3.1.0
+     */
+    const DATA_TYPE_INTEGER = 'int';
+
+    /**
+     * The 'boolean' data type name.
+     *
+     * @since 3.1.0
+     */
+    const DATA_TYPE_BOOLEAN = 'bool';
+
+    /**
+     * The schema.org Event type URI.
+     *
+     * @since 3.1.0
+     */
+    const SCHEMA_EVENT_TYPE = 'http://schema.org/Event';
+
+    /**
+     * The Schema service singleton instance.
+     *
+     * @since 3.1.0
+     * @access private
+     * @var \Wordlift_Schema_Service $instance The Schema service singleton instance.
+     */
+    private static $instance;
+
+    /**
+     * WordLift's schema.
+     *
+     * @since 3.1.0
+     * @access private
+     * @var array $schema WordLift's schema.
+     */
+    private $schema;
+
+    /**
+     * The Log service.
+     *
+     * @since 3.1.0
+     * @access private
+     * @var \Wordlift_Log_Service $log_service The Log service.
+     */
+    private $log_service;
+
+    /**
+     * Wordlift_Schema_Service constructor.
+     *
+     * @since 3.1.0
+     */
+    public function __construct() {
+
+        $this->log_service = Wordlift_Log_Service::get_logger( 'Wordlift_Schema_Service' );
+
+        // Create a singleton instance of the Schema service, useful to provide static functions to global functions.
+        self::$instance = $this;
+
+        // Set the taxonomy data.
+        // Note: parent types must be defined before child types.
+        $this->schema = array(
+            'thing'         => $this->get_thing_schema(),
+            'creative-work' => $this->get_creative_work_schema(),
+            'event'         => $this->get_event_schema(),
+            'organization'  => $this->get_organization_schema(),
+            'person'        => $this->get_person_schema(),
+            'place'         => $this->get_place_schema(),
+            'localbusiness' => $this->get_local_business_schema()
+        );
+
+    }
+
+    /**
+     * Get a reference to the Schema service.
+     *
+     * @since 3.1.0
+     *
+     * @return Wordlift_Schema_Service A reference to the Schema service.
+     */
+    public static function get_instance() {
+
+        return self::$instance;
+    }
+
+    /**
+     * Get the WordLift's schema.
+     *
+     * @param string $name The schema name.
+     *
+     * @return array|null An array with the schema configuration or NULL if the schema is not found.
+     *
+     * @since 3.1.0
+     */
+    public function get_schema( $name ) {
+
+        // $this->log_service->trace( "Get schema [ name :: $name ]" );
+
+        // Check if the schema exists and, if not, return NULL.
+        if ( ! isset( $this->schema[ $name ] ) ) {
+            return null;
+        }
+
+        // Return the requested schema.
+        return $this->schema[ $name ];
+    }
+
+    /**
+     * Get the 'thing' schema.
+     *
+     * @return array An array with the schema configuration.
+     *
+     * @since 3.1.0
+     */
+    private function get_thing_schema() {
+
+        return array(
+            'css_class'          => 'wl-thing',
+            'uri'                => 'http://schema.org/Thing',
+            'same_as'            => array( '*' ), // set as default.
+            'custom_fields'      => array(
+                self::FIELD_SAME_AS => array(
+                    'predicate'   => 'http://schema.org/sameAs',
+                    'type'        => self::DATA_TYPE_URI,
+                    'export_type' => 'http://schema.org/Thing',
+                    'constraints' => array(
+                        'cardinality' => INF
+                    ),
+                    'input_field' => 'sameas'   // we need a custom metabox
+                )
+            ),
+            // {{sameAs}} not present in the microdata template,
+            // because it is treated separately in *wl_content_embed_item_microdata*
+            'microdata_template' => '',
+            'templates'          => array(
+                'subtitle' => '{{id}}'
+            )
+        );
+
+    }
+
+    /**
+     * Get the 'creative work' schema.
+     *
+     * @return array An array with the schema configuration.
+     *
+     * @since 3.1.0
+     */
+    private function get_creative_work_schema() {
+
+        $schema = array(
+            'label'              => 'CreativeWork',
+            'description'        => 'A creative work (or a Music Album).',
+            'parents'            => array( 'thing' ), // give term slug as parent
+            'css_class'          => 'wl-creative-work',
+            'uri'                => 'http://schema.org/CreativeWork',
+            'same_as'            => array(
+                'http://schema.org/MusicAlbum',
+                'http://schema.org/Product'
+            ),
+            'custom_fields'      => array(
+                self::FIELD_AUTHOR => array(
+                    'predicate'   => 'http://schema.org/author',
+                    'type'        => self::DATA_TYPE_URI,
+                    'export_type' => 'http://schema.org/Person',
+                    'constraints' => array(
+                        'uri_type'    => array( 'Person', 'Organization' ),
+                        'cardinality' => INF
+                    )
+                ),
+            ),
+            'microdata_template' => '{{author}}',
+            'templates'          => array(
+                'subtitle' => '{{id}}'
+            )
+        );
+
+        // Merge the custom fields with those provided by the thing schema.
+        $thing_schema            = $this->get_thing_schema();
+        $schema['custom_fields'] = array_merge( $schema['custom_fields'], $thing_schema['custom_fields'] );
+
+        return $schema;
+    }
+
+    /**
+     * Get the 'event' schema.
+     *
+     * @return array An array with the schema configuration.
+     *
+     * @since 3.1.0
+     */
+    private function get_event_schema() {
+
+        $schema = array(
+            'label'              => 'Event',
+            'description'        => 'An event . ',
+            'parents'            => array( 'thing' ),
+            'css_class'          => 'wl-event',
+            'uri'                => self::SCHEMA_EVENT_TYPE,
+            'same_as'            => array( 'http://dbpedia.org/ontology/Event' ),
+            'custom_fields'      => array(
+                self::FIELD_DATE_START => array(
+                    'predicate'   => 'http://schema.org/startDate',
+                    'type'        => self::DATA_TYPE_DATE,
+                    'export_type' => 'xsd:datetime',
+                    'constraints' => ''
+                ),
+                self::FIELD_DATE_END   => array(
+                    'predicate'   => 'http://schema.org/endDate',
+                    'type'        => self::DATA_TYPE_DATE,
+                    'export_type' => 'xsd:datetime',
+                    'constraints' => ''
+                ),
+                self::FIELD_LOCATION   => array(
+                    'predicate'   => 'http://schema.org/location',
+                    'type'        => self::DATA_TYPE_URI,
+                    'export_type' => 'http://schema.org/PostalAddress',
+                    'constraints' => array(
+                        'uri_type'    => 'Place',
+                        'cardinality' => INF
+                    )
+                )
+            ),
+            'microdata_template' =>
+                '{{startDate}}
                                 {{endDate}}
                                 {{location}}',
-			'templates'          => array(
-				'subtitle' => '{{id}}'
-			)
-		);
-
-		// Merge the custom fields with those provided by the thing schema.
-		$thing_schema            = $this->get_thing_schema();
-		$schema['custom_fields'] = array_merge( $schema['custom_fields'], $thing_schema['custom_fields'] );
-
-		return $schema;
-	}
-
-	/**
-	 * Get the 'organization' schema.
-	 *
-	 * @return array An array with the schema configuration.
-	 *
-	 * @since 3.1.0
-	 */
-	private function get_organization_schema() {
-
-		$schema = array(
-			'label'              => 'Organization',
-			'description'        => 'An organization, including a government or a newspaper.',
-			'parents'            => array( 'thing' ),
-			'css_class'          => 'wl-organization',
-			'uri'                => 'http://schema.org/Organization',
-			'same_as'            => array(
-				'http://rdf.freebase.com/ns/organization.organization',
-				'http://rdf.freebase.com/ns/government.government',
-				'http://schema.org/Newspaper'
-			),
-			'custom_fields'      => array(
-				self::FIELD_FOUNDER => array(
-					'predicate'   => 'http://schema.org/founder',
-					'type'        => self::DATA_TYPE_URI,
-					'export_type' => 'http://schema.org/Person',
-					'constraints' => array(
-						'uri_type'    => 'Person',
-						'cardinality' => INF
-					)
-				),
-			),
-			'microdata_template' => '{{founder}}',
-			'templates'          => array(
-				'subtitle' => '{{id}}'
-			)
-		);
-
-		// Merge the custom fields with those provided by the thing schema.
-		$thing_schema            = $this->get_thing_schema();
-		$schema['custom_fields'] = array_merge( $schema['custom_fields'], $thing_schema['custom_fields'] );
-
-		return $schema;
-	}
-
-	/**
-	 * Get the 'person' schema.
-	 *
-	 * @return array An array with the schema configuration.
-	 *
-	 * @since 3.1.0
-	 */
-	private function get_person_schema() {
-
-		$schema = array(
-			'label'              => 'Person',
-			'description'        => 'A person (or a music artist).',
-			'parents'            => array( 'thing' ),
-			'css_class'          => 'wl-person',
-			'uri'                => 'http://schema.org/Person',
-			'same_as'            => array(
-				'http://rdf.freebase.com/ns/people.person',
-				'http://rdf.freebase.com/ns/music.artist',
-				'http://dbpedia.org/class/yago/LivingPeople'
-			),
-			'custom_fields'      => array(
-				self::FIELD_KNOWS       => array(
-					'predicate'   => 'http://schema.org/knows',
-					'type'        => self::DATA_TYPE_URI,
-					'export_type' => 'http://schema.org/Person',
-					'constraints' => array(
-						'uri_type'    => 'Person',
-						'cardinality' => INF
-					)
-				),
-				self::FIELD_BIRTH_DATE  => array(
-					'predicate'   => 'http://schema.org/birthDate',
-					'type'        => self::DATA_TYPE_DATE,
-					'export_type' => 'xsd:date',
-					'constraints' => ''
-				),
-				self::FIELD_BIRTH_PLACE => array(
-					'predicate'   => 'http://schema.org/birthPlace',
-					'type'        => self::DATA_TYPE_URI,
-					'export_type' => 'http://schema.org/Place',
-					'constraints' => array(
-						'uri_type' => 'Place'
-					)
-				),
-				self::FIELD_AFFILIATION => array(
-					'predicate'   => 'http://schema.org/affiliation',
-					'type'        => self::DATA_TYPE_URI,
-					'export_type' => 'http://schema.org/Organization',
-					'constraints' => array(
-						'uri_type' => 'Organization',
-						'cardinality' => INF
-					)
-				),
-				self::FIELD_EMAIL => array(
-					'predicate'   => 'http://schema.org/email',
-					'type'        => self::DATA_TYPE_STRING,
-					'export_type' => 'xsd:string',
-					'constraints' => array(
-						'cardinality' => INF
-					)
-				)
-			),
-			'microdata_template' =>
-				'{{birthDate}}
+            'templates'          => array(
+                'subtitle' => '{{id}}'
+            )
+        );
+
+        // Merge the custom fields with those provided by the thing schema.
+        $thing_schema            = $this->get_thing_schema();
+        $schema['custom_fields'] = array_merge( $schema['custom_fields'], $thing_schema['custom_fields'] );
+
+        return $schema;
+    }
+
+    /**
+     * Get the 'organization' schema.
+     *
+     * @return array An array with the schema configuration.
+     *
+     * @since 3.1.0
+     */
+    private function get_organization_schema() {
+
+        $schema = array(
+            'label'              => 'Organization',
+            'description'        => 'An organization, including a government or a newspaper.',
+            'parents'            => array( 'thing' ),
+            'css_class'          => 'wl-organization',
+            'uri'                => 'http://schema.org/Organization',
+            'same_as'            => array(
+                'http://rdf.freebase.com/ns/organization.organization',
+                'http://rdf.freebase.com/ns/government.government',
+                'http://schema.org/Newspaper'
+            ),
+            'custom_fields'      => array(
+                self::FIELD_FOUNDER => array(
+                    'predicate'   => 'http://schema.org/founder',
+                    'type'        => self::DATA_TYPE_URI,
+                    'export_type' => 'http://schema.org/Person',
+                    'constraints' => array(
+                        'uri_type'    => 'Person',
+                        'cardinality' => INF
+                    )
+                ),
+            ),
+            'microdata_template' => '{{founder}}',
+            'templates'          => array(
+                'subtitle' => '{{id}}'
+            )
+        );
+
+        // Merge the custom fields with those provided by the thing schema.
+        $thing_schema            = $this->get_thing_schema();
+        $schema['custom_fields'] = array_merge( $schema['custom_fields'], $thing_schema['custom_fields'] );
+
+        return $schema;
+    }
+
+    /**
+     * Get the 'person' schema.
+     *
+     * @return array An array with the schema configuration.
+     *
+     * @since 3.1.0
+     */
+    private function get_person_schema() {
+
+        $schema = array(
+            'label'              => 'Person',
+            'description'        => 'A person (or a music artist).',
+            'parents'            => array( 'thing' ),
+            'css_class'          => 'wl-person',
+            'uri'                => 'http://schema.org/Person',
+            'same_as'            => array(
+                'http://rdf.freebase.com/ns/people.person',
+                'http://rdf.freebase.com/ns/music.artist',
+                'http://dbpedia.org/class/yago/LivingPeople'
+            ),
+            'custom_fields'      => array(
+                self::FIELD_KNOWS       => array(
+                    'predicate'   => 'http://schema.org/knows',
+                    'type'        => self::DATA_TYPE_URI,
+                    'export_type' => 'http://schema.org/Person',
+                    'constraints' => array(
+                        'uri_type'    => 'Person',
+                        'cardinality' => INF
+                    )
+                ),
+                self::FIELD_BIRTH_DATE  => array(
+                    'predicate'   => 'http://schema.org/birthDate',
+                    'type'        => self::DATA_TYPE_DATE,
+                    'export_type' => 'xsd:date',
+                    'constraints' => ''
+                ),
+                self::FIELD_BIRTH_PLACE => array(
+                    'predicate'   => 'http://schema.org/birthPlace',
+                    'type'        => self::DATA_TYPE_URI,
+                    'export_type' => 'http://schema.org/Place',
+                    'constraints' => array(
+                        'uri_type' => 'Place'
+                    )
+                ),
+                self::FIELD_AFFILIATION => array(
+                    'predicate'   => 'http://schema.org/affiliation',
+                    'type'        => self::DATA_TYPE_URI,
+                    'export_type' => 'http://schema.org/Organization',
+                    'constraints' => array(
+                        'uri_type' => 'Organization',
+                        'cardinality' => INF
+                    )
+                ),
+                self::FIELD_EMAIL => array(
+                    'predicate'   => 'http://schema.org/email',
+                    'type'        => self::DATA_TYPE_STRING,
+                    'export_type' => 'xsd:string',
+                    'constraints' => array(
+                        'cardinality' => INF
+                    )
+                )
+            ),
+            'microdata_template' =>
+                '{{birthDate}}
                  {{birthPlace}}
                  {{knows}}
 				 {{affiliation}}
 				 {{email}}',
-			'templates'          => array(
-				'subtitle' => '{{id}}'
-			)
-		);
-
-		// Merge the custom fields with those provided by the thing schema.
-		$thing_schema            = $this->get_thing_schema();
-		$schema['custom_fields'] = array_merge( $schema['custom_fields'], $thing_schema['custom_fields'] );
-
-		return $schema;
-
-	}
-
-	/**
-	 * Get the 'place' schema.
-	 *
-	 * @return array An array with the schema configuration.
-	 *
-	 * @since 3.1.0
-	 */
-	private function get_place_schema() {
-
-		$schema = array(
-			'label'              => 'Place',
-			'description'        => 'A place.',
-			'parents'            => array( 'thing' ),
-			'css_class'          => 'wl-place',
-			'uri'                => 'http://schema.org/Place',
-			'same_as'            => array(
-				'http://rdf.freebase.com/ns/location.location',
-				'http://www.opengis.net/gml/_Feature'
-			),
-			'custom_fields'      => array(
-				self::FIELD_GEO_LATITUDE  => array(
-					'predicate'   => 'http://schema.org/latitude',
-					'type'        => self::DATA_TYPE_DOUBLE,
-					'export_type' => 'xsd:double',
-					'constraints' => '',
-					'input_field' => 'coordinates'   // to build custom metabox
-				),
-				self::FIELD_GEO_LONGITUDE => array(
-					'predicate'   => 'http://schema.org/longitude',
-					'type'        => self::DATA_TYPE_DOUBLE,
-					'export_type' => 'xsd:double',
-					'constraints' => '',
-					'input_field' => 'coordinates'   // to build custom metabox
-				),
-				self::FIELD_ADDRESS       => array(
-					'predicate'   => 'http://schema.org/address',
-					'type'        => self::DATA_TYPE_STRING,
-					'export_type' => 'xsd:string',
-					'constraints' => ''
-				)
-			),
-			'microdata_template' =>
-				'<span itemprop="geo" itemscope itemtype="http://schema.org/GeoCoordinates">
+            'templates'          => array(
+                'subtitle' => '{{id}}'
+            )
+        );
+
+        // Merge the custom fields with those provided by the thing schema.
+        $thing_schema            = $this->get_thing_schema();
+        $schema['custom_fields'] = array_merge( $schema['custom_fields'], $thing_schema['custom_fields'] );
+
+        return $schema;
+
+    }
+
+    /**
+     * Get the 'place' schema.
+     *
+     * @return array An array with the schema configuration.
+     *
+     * @since 3.1.0
+     */
+    private function get_place_schema() {
+
+        $schema = array(
+            'label'              => 'Place',
+            'description'        => 'A place.',
+            'parents'            => array( 'thing' ),
+            'css_class'          => 'wl-place',
+            'uri'                => 'http://schema.org/Place',
+            'same_as'            => array(
+                'http://rdf.freebase.com/ns/location.location',
+                'http://www.opengis.net/gml/_Feature'
+            ),
+            'custom_fields'      => array(
+                self::FIELD_GEO_LATITUDE  => array(
+                    'predicate'   => 'http://schema.org/latitude',
+                    'type'        => self::DATA_TYPE_DOUBLE,
+                    'export_type' => 'xsd:double',
+                    'constraints' => '',
+                    'input_field' => 'coordinates'   // to build custom metabox
+                ),
+                self::FIELD_GEO_LONGITUDE => array(
+                    'predicate'   => 'http://schema.org/longitude',
+                    'type'        => self::DATA_TYPE_DOUBLE,
+                    'export_type' => 'xsd:double',
+                    'constraints' => '',
+                    'input_field' => 'coordinates'   // to build custom metabox
+                ),
+                self::FIELD_ADDRESS       => array(
+                    'predicate'   => 'http://schema.org/address',
+                    'type'        => self::DATA_TYPE_STRING,
+                    'export_type' => 'xsd:string',
+                    'constraints' => ''
+                )
+            ),
+            'microdata_template' =>
+                '<span itemprop="geo" itemscope itemtype="http://schema.org/GeoCoordinates">
                                     {{latitude}}
                                     {{longitude}}
                                 </span>
                                 {{address}}',
-			'templates'          => array(
-				'subtitle' => '{{id}}'
-			)
-		);
-
-		// Merge the custom fields with those provided by the thing schema.
-		$thing_schema            = $this->get_thing_schema();
-		$schema['custom_fields'] = array_merge( $schema['custom_fields'], $thing_schema['custom_fields'] );
-
-		return $schema;
-	}
-
-	/**
-	 * Get the 'local business' schema.
-	 *
-	 * @return array An array with the schema configuration.
-	 *
-	 * @since 3.1.0
-	 */
-	private function get_local_business_schema() {
-
-		$schema = array(
-			'label'              => 'LocalBusiness',
-			'description'        => 'A local business.',
-			'parents'            => array( 'place', 'organization' ),
-			'css_class'          => 'wl-local-business',
-			'uri'                => 'http://schema.org/LocalBusiness',
-			'same_as'            => array(
-				'http://rdf.freebase.com/ns/business/business_location',
-				'https://schema.org/Store'
-			),
-			'custom_fields'      => array(),
-			'microdata_template' => '<span itemprop="geo" itemscope itemtype="http://schema.org/GeoCoordinates">
+            'templates'          => array(
+                'subtitle' => '{{id}}'
+            )
+        );
+
+        // Merge the custom fields with those provided by the thing schema.
+        $thing_schema            = $this->get_thing_schema();
+        $schema['custom_fields'] = array_merge( $schema['custom_fields'], $thing_schema['custom_fields'] );
+
+        return $schema;
+    }
+
+    /**
+     * Get the 'local business' schema.
+     *
+     * @return array An array with the schema configuration.
+     *
+     * @since 3.1.0
+     */
+    private function get_local_business_schema() {
+
+        $schema = array(
+            'label'              => 'LocalBusiness',
+            'description'        => 'A local business.',
+            'parents'            => array( 'place', 'organization' ),
+            'css_class'          => 'wl-local-business',
+            'uri'                => 'http://schema.org/LocalBusiness',
+            'same_as'            => array(
+                'http://rdf.freebase.com/ns/business/business_location',
+                'https://schema.org/Store'
+            ),
+            'custom_fields'      => array(),
+            'microdata_template' => '<span itemprop="geo" itemscope itemtype="http://schema.org/GeoCoordinates">
                                     {{latitude}}
                                     {{longitude}}
                                 </span>
                                 {{address}}
                                 {{founder}}',
-			'templates'          => array(
-				'subtitle' => '{{id}}'
-			)
-		);
-
-		// Merge the custom fields with those provided by the place and organization schema.
-		$place_schema            = $this->get_place_schema();
-		$organization_schema     = $this->get_organization_schema();
-		$schema['custom_fields'] = array_merge( $schema['custom_fields'], $place_schema['custom_fields'], $organization_schema['custom_fields'] );
-
-		return $schema;
-	}
+            'templates'          => array(
+                'subtitle' => '{{id}}'
+            )
+        );
+
+        // Merge the custom fields with those provided by the place and organization schema.
+        $place_schema            = $this->get_place_schema();
+        $organization_schema     = $this->get_organization_schema();
+        $schema['custom_fields'] = array_merge( $schema['custom_fields'], $place_schema['custom_fields'], $organization_schema['custom_fields'] );
+
+        return $schema;
+    }
 
 }