diff sites/all/modules/entity/includes/entity.inc @ 4:ce11bbd8f642

added modules

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/sites/all/modules/entity/includes/entity.inc	Thu Sep 19 10:38:44 2013 +0100
@@ -0,0 +1,320 @@
+<?php
+
+/**
+ * @file
+ * Provides a base class for entities.
+ */
+
+/**
+ * A common class for entities.
+ *
+ * It's suggested, but not required, to extend this class and to override
+ * __construct() in order to specify a fixed entity type.
+ *
+ * For providing an entity label and URI it is suggested to override the
+ * defaultLabel() and defaultUri() methods, and to specify the
+ * entity_class_label() and entity_class_uri() as respective callbacks in
+ * hook_entity_info(). That way modules are able to override your defaults
+ * by altering the hook_entity_info() callbacks, while $entity->label() and
+ * $entity->uri() reflect this changes as well.
+ *
+ * Defaults for entity properties can be easily defined by adding class
+ * properties, e.g.:
+ * @code
+ *   public $name = '';
+ *   public $count = 0;
+ * @endcode
+ */
+class Entity {
+
+  protected $entityType;
+  protected $entityInfo;
+  protected $idKey, $nameKey, $statusKey;
+  protected $defaultLabel = FALSE;
+
+  /**
+   * Creates a new entity.
+   *
+   * @see entity_create()
+   */
+  public function __construct(array $values = array(), $entityType = NULL) {
+    if (empty($entityType)) {
+      throw new Exception('Cannot create an instance of Entity without a specified entity type.');
+    }
+    $this->entityType = $entityType;
+    $this->setUp();
+    // Set initial values.
+    foreach ($values as $key => $value) {
+      $this->$key = $value;
+    }
+  }
+
+  /**
+   * Set up the object instance on construction or unserializiation.
+   */
+  protected function setUp() {
+    $this->entityInfo = entity_get_info($this->entityType);
+    $this->idKey = $this->entityInfo['entity keys']['id'];
+    $this->nameKey = isset($this->entityInfo['entity keys']['name']) ? $this->entityInfo['entity keys']['name'] : $this->idKey;
+    $this->statusKey = empty($info['entity keys']['status']) ? 'status' : $info['entity keys']['status'];
+  }
+
+  /**
+   * Returns the internal, numeric identifier.
+   *
+   * Returns the numeric identifier, even if the entity type has specified a
+   * name key. In the latter case, the numeric identifier is supposed to be used
+   * when dealing generically with entities or internally to refer to an entity,
+   * i.e. in a relational database. If unsure, use Entity:identifier().
+   */
+  public function internalIdentifier() {
+    return isset($this->{$this->idKey}) ? $this->{$this->idKey} : NULL;
+  }
+
+  /**
+   * Returns the entity identifier, i.e. the entities name or numeric id.
+   *
+   * @return
+   *   The identifier of the entity. If the entity type makes use of a name key,
+   *   the name is returned, else the numeric id.
+   *
+   * @see entity_id()
+   */
+  public function identifier() {
+    return isset($this->{$this->nameKey}) ? $this->{$this->nameKey} : NULL;
+  }
+
+  /**
+   * Returns the info of the type of the entity.
+   *
+   * @see entity_get_info()
+   */
+  public function entityInfo() {
+    return $this->entityInfo;
+  }
+
+  /**
+   * Returns the type of the entity.
+   */
+  public function entityType() {
+    return $this->entityType;
+  }
+
+  /**
+   * Returns the bundle of the entity.
+   *
+   * @return
+   *   The bundle of the entity. Defaults to the entity type if the entity type
+   *   does not make use of different bundles.
+   */
+  public function bundle() {
+    return !empty($this->entityInfo['entity keys']['bundle']) ? $this->{$this->entityInfo['entity keys']['bundle']} : $this->entityType;
+  }
+
+  /**
+   * Returns the label of the entity.
+   *
+   * Modules may alter the label by specifying another 'label callback' using
+   * hook_entity_info_alter().
+   *
+   * @see entity_label()
+   */
+  public function label() {
+    // If the default label flag is enabled, this is being invoked recursively.
+    // In this case we need to use our default label callback directly. This may
+    // happen if a module provides a label callback implementation different
+    // from ours, but then invokes Entity::label() or entity_class_label() from
+    // there.
+    if ($this->defaultLabel || (isset($this->entityInfo['label callback']) && $this->entityInfo['label callback'] == 'entity_class_label')) {
+      return $this->defaultLabel();
+    }
+    $this->defaultLabel = TRUE;
+    $label = entity_label($this->entityType, $this);
+    $this->defaultLabel = FALSE;
+    return $label;
+  }
+
+  /**
+   * Defines the entity label if the 'entity_class_label' callback is used.
+   *
+   * Specify 'entity_class_label' as 'label callback' in hook_entity_info() to
+   * let the entity label point to this method. Override this in order to
+   * implement a custom default label.
+   */
+  protected function defaultLabel() {
+    // Add in the translated specified label property.
+    return $this->getTranslation($this->entityInfo['entity keys']['label']);
+  }
+
+  /**
+   * Returns the uri of the entity just as entity_uri().
+   *
+   * Modules may alter the uri by specifying another 'uri callback' using
+   * hook_entity_info_alter().
+   *
+   * @see entity_uri()
+   */
+  public function uri() {
+    if (isset($this->entityInfo['uri callback']) && $this->entityInfo['uri callback'] == 'entity_class_uri') {
+      return $this->defaultUri();
+    }
+    return entity_uri($this->entityType, $this);
+  }
+
+  /**
+   * Override this in order to implement a custom default URI and specify
+   * 'entity_class_uri' as 'uri callback' hook_entity_info().
+   */
+  protected function defaultUri() {
+    return array('path' => 'default/' . $this->identifier());
+  }
+
+  /**
+   * Checks if the entity has a certain exportable status.
+   *
+   * @param $status
+   *   A status constant, i.e. one of ENTITY_CUSTOM, ENTITY_IN_CODE,
+   *   ENTITY_OVERRIDDEN or ENTITY_FIXED.
+   *
+   * @return
+   *   For exportable entities TRUE if the entity has the status, else FALSE.
+   *   In case the entity is not exportable, NULL is returned.
+   *
+   * @see entity_has_status()
+   */
+  public function hasStatus($status) {
+    if (!empty($this->entityInfo['exportable'])) {
+      return isset($this->{$this->statusKey}) && ($this->{$this->statusKey} & $status) == $status;
+    }
+  }
+
+  /**
+   * Permanently saves the entity.
+   *
+   * @see entity_save()
+   */
+  public function save() {
+    return entity_get_controller($this->entityType)->save($this);
+  }
+
+  /**
+   * Permanently deletes the entity.
+   *
+   * @see entity_delete()
+   */
+  public function delete() {
+    $id = $this->identifier();
+    if (isset($id)) {
+      entity_get_controller($this->entityType)->delete(array($id));
+    }
+  }
+
+  /**
+   * Exports the entity.
+   *
+   * @see entity_export()
+   */
+  public function export($prefix = '') {
+    return entity_get_controller($this->entityType)->export($this, $prefix);
+  }
+
+  /**
+   * Generate an array for rendering the entity.
+   *
+   * @see entity_view()
+   */
+  public function view($view_mode = 'full', $langcode = NULL, $page = NULL) {
+    return entity_get_controller($this->entityType)->view(array($this), $view_mode, $langcode, $page);
+  }
+
+  /**
+   * Builds a structured array representing the entity's content.
+   *
+   * @see entity_build_content()
+   */
+  public function buildContent($view_mode = 'full', $langcode = NULL) {
+    return entity_get_controller($this->entityType)->buildContent($this, $view_mode, $langcode);
+  }
+
+  /**
+   * Gets the raw, translated value of a property or field.
+   *
+   * Supports retrieving field translations as well as i18n string translations.
+   *
+   * Note that this returns raw data values, which might not reflect what
+   * has been declared for hook_entity_property_info() as no 'getter callbacks'
+   * are invoked or no referenced entities are loaded. For retrieving values
+   * reflecting the property info make use of entity metadata wrappers, see
+   * entity_metadata_wrapper().
+   *
+   * @param $property_name
+   *   The name of the property to return; e.g., 'title'.
+   * @param $langcode
+   *   (optional) The language code of the language to which the value should
+   *   be translated. If set to NULL, the default display language is being
+   *   used.
+   *
+   * @return
+   *   The raw, translated property value; or the raw, un-translated value if no
+   *   translation is available.
+   *
+   * @todo Implement an analogous setTranslation() method for updating.
+   */
+  public function getTranslation($property, $langcode = NULL) {
+    $all_info = entity_get_all_property_info($this->entityType);
+    // Assign by reference to avoid triggering notices if metadata is missing.
+    $property_info = &$all_info[$property];
+
+    if (!empty($property_info['translatable'])) {
+      if (!empty($property_info['field'])) {
+        return field_get_items($this->entityType, $this, $property, $langcode);
+      }
+      elseif (!empty($property_info['i18n string'])) {
+        $name = $this->entityInfo['module'] . ':' . $this->entityType . ':' . $this->identifier() . ':' . $property;
+        return entity_i18n_string($name, $this->$property, $langcode);
+      }
+    }
+    return $this->$property;
+  }
+
+  /**
+   * Checks whether the entity is the default revision.
+   *
+   * @return Boolean
+   *
+   * @see entity_revision_is_default()
+   */
+  public function isDefaultRevision() {
+    if (!empty($this->entityInfo['entity keys']['revision'])) {
+      $key = !empty($this->entityInfo['entity keys']['default revision']) ? $this->entityInfo['entity keys']['default revision'] : 'default_revision';
+      return !empty($this->$key);
+    }
+    return TRUE;
+  }
+
+  /**
+   * Magic method to only serialize what's necessary.
+   */
+  public function __sleep() {
+    $vars = get_object_vars($this);
+    unset($vars['entityInfo'], $vars['idKey'], $vars['nameKey'], $vars['statusKey']);
+    // Also key the returned array with the variable names so the method may
+    // be easily overridden and customized.
+    return drupal_map_assoc(array_keys($vars));
+  }
+
+  /**
+   * Magic method to invoke setUp() on unserialization.
+   */
+  public function __wakeup() {
+    $this->setUp();
+  }
+}
+
+/**
+ * These classes are deprecated by "Entity" and are only here for backward
+ * compatibility reasons.
+ */
+class EntityDB extends Entity {}
+class EntityExtendable extends Entity {}
+class EntityDBExtendable extends Entity {}