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-rw-r--r--engine/classes/ElggEntity.php2696
1 files changed, 1348 insertions, 1348 deletions
diff --git a/engine/classes/ElggEntity.php b/engine/classes/ElggEntity.php
index f793f67c0..37722243c 100644
--- a/engine/classes/ElggEntity.php
+++ b/engine/classes/ElggEntity.php
@@ -1,1349 +1,1349 @@
-<?php
-/**
- * The parent class for all Elgg Entities.
- *
- * An ElggEntity is one of the basic data models in Elgg. It is the primary
- * means of storing and retrieving data from the database. An ElggEntity
- * represents one row of the entities table.
- *
- * The ElggEntity class handles CRUD operations for the entities table.
- * ElggEntity should always be extended by another class to handle CRUD
- * operations on the type-specific table.
- *
- * ElggEntity uses magic methods for get and set, so any property that isn't
- * declared will be assumed to be metadata and written to the database
- * as metadata on the object. All children classes must declare which
- * properties are columns of the type table or they will be assumed
- * to be metadata. See ElggObject::initialise_entities() for examples.
- *
- * Core supports 4 types of entities: ElggObject, ElggUser, ElggGroup, and
- * ElggSite.
- *
- * @tip Most plugin authors will want to extend the ElggObject class
- * instead of this class.
- *
- * @package Elgg.Core
- * @subpackage DataMode.Entities
- * @link http://docs.elgg.org/DataModel/ElggEntity
- */
-abstract class ElggEntity implements
- Notable, // Calendar interface
- Locatable, // Geocoding interface
- Exportable, // Allow export of data
- Importable, // Allow import of data
- Loggable, // Can events related to this object class be logged
- Iterator, // Override foreach behaviour
- ArrayAccess // Override for array access
-{
- /**
- * The main attributes of an entity.
- * Blank entries for all database fields should be created by the constructor.
- * Subclasses should add to this in their constructors.
- * Any field not appearing in this will be viewed as a
- */
- protected $attributes;
-
- /**
- * If set, overrides the value of getURL()
- */
- protected $url_override;
-
- /**
- * Icon override, overrides the value of getIcon().
- */
- protected $icon_override;
-
- /**
- * Holds metadata until entity is saved. Once the entity is saved, metadata are written immediately to the database.
- */
- protected $temp_metadata;
-
- /**
- * Holds annotations until entity is saved. Once the entity is saved, annotations are written immediately to the database.
- */
- protected $temp_annotations;
-
-
- /**
- * Volatile data structure for this object, allows for storage of data
- * in-memory that isn't sync'd back to the metadata table.
- */
- protected $volatile;
-
- /**
- * Initialise the attributes array.
- *
- * This is vital to distinguish between metadata and base parameters.
- *
- * @return void
- */
- protected function initialise_attributes() {
- initialise_entity_cache();
-
- // Create attributes array if not already created
- if (!is_array($this->attributes)) {
- $this->attributes = array();
- }
- if (!is_array($this->temp_metadata)) {
- $this->temp_metadata = array();
- }
- if (!is_array($this->temp_annotations)) {
- $this->temp_annotations = array();
- }
- if (!is_array($this->volatile)) {
- $this->volatile = array();
- }
-
- $this->attributes['guid'] = "";
- $this->attributes['type'] = "";
- $this->attributes['subtype'] = "";
-
- $this->attributes['owner_guid'] = get_loggedin_userid();
- $this->attributes['container_guid'] = get_loggedin_userid();
-
- $this->attributes['site_guid'] = 0;
- $this->attributes['access_id'] = ACCESS_PRIVATE;
- $this->attributes['time_created'] = "";
- $this->attributes['time_updated'] = "";
- $this->attributes['last_action'] = '';
- $this->attributes['enabled'] = "yes";
-
- // There now follows a bit of a hack
- /* Problem: To speed things up, some objects are split over several tables, this means that it requires
- * n number of database reads to fully populate an entity. This causes problems for caching and create events
- * since it is not possible to tell whether a subclassed entity is complete.
- * Solution: We have two counters, one 'tables_split' which tells whatever is interested how many tables
- * are going to need to be searched in order to fully populate this object, and 'tables_loaded' which is how
- * many have been loaded thus far.
- * If the two are the same then this object is complete.
- *
- * Use: isFullyLoaded() to check
- */
- $this->attributes['tables_split'] = 1;
- $this->attributes['tables_loaded'] = 0;
- }
-
- /**
- * Clone an entity
- *
- * Resets the guid so that the entity can be saved as a distinct entity from
- * the original. Creation time will be set when this new entity is saved.
- * The owner and container guids come from the original entity. The clone
- * method copies metadata but does not copy annotations or private settings.
- *
- * @note metadata will have its owner and access id set when the entity is saved
- * and it will be the same as that of the entity.
- */
- public function __clone() {
- $orig_entity = get_entity($this->guid);
- if (!$orig_entity) {
- elgg_log("Failed to clone entity with GUID $this->guid", "ERROR");
- return;
- }
-
- $metadata_array = get_metadata_for_entity($this->guid);
-
- $this->attributes['guid'] = "";
-
- $this->attributes['subtype'] = $orig_entity->getSubtype();
-
- // copy metadata over to new entity - slightly convoluted due to
- // handling of metadata arrays
- if (is_array($metadata_array)) {
- // create list of metadata names
- $metadata_names = array();
- foreach ($metadata_array as $metadata) {
- $metadata_names[] = $metadata['name'];
- }
- // arrays are stored with multiple enties per name
- $metadata_names = array_unique($metadata_names);
-
- // move the metadata over
- foreach ($metadata_names as $name) {
- $this->set($name, $orig_entity->$name);
- }
- }
- }
-
- /**
- * Return the value of a property.
- *
- * If $name is defined in $this->attributes that value is returned, otherwise it will
- * pull from the entity's metadata.
- *
- * Q: Why are we not using __get overload here?
- * A: Because overload operators cause problems during subclassing, so we put the code here and
- * create overloads in subclasses.
- * @todo What problems are these?
- *
- * @warning Subtype is returned as an id rather than the subtype string. Use getSubtype()
- * to get the subtype string.
- *
- * @param string $name
- * @return mixed Returns the value of a given value, or null.
- */
- public function get($name) {
- // See if its in our base attributes
- if (isset($this->attributes[$name])) {
- return $this->attributes[$name];
- }
-
- // No, so see if its in the meta data for this entity
- $meta = $this->getMetaData($name);
-
- // getMetaData returns NULL if $name is not found
- return $meta;
- }
-
- /**
- * Sets the value of a property.
- *
- * If $name is defined in $this->attributes that value is set, otherwise it will
- * set the appropriate item of metadata.
- *
- * @warning It is important that your class populates $this->attributes with keys for all base attributes, anything
- * not in their gets set as METADATA.
- *
- * Q: Why are we not using __set overload here?
- * A: Because overload operators cause problems during subclassing, so we put the code here and
- * create overloads in subclasses.
- * @todo What problems?
- *
- * @param string $name
- * @param mixed $value
- */
- public function set($name, $value) {
- if (array_key_exists($name, $this->attributes)) {
- // Certain properties should not be manually changed!
- switch ($name) {
- case 'guid':
- case 'time_created':
- case 'time_updated':
- case 'last_action':
- return FALSE;
- break;
- default:
- $this->attributes[$name] = $value;
- break;
- }
- } else {
- return $this->setMetaData($name, $value);
- }
-
- return TRUE;
- }
-
- /**
- * Return the value of a piece of metadata.
- *
- * @param string $name
- * @return mixed The value, or NULL if not found.
- */
- public function getMetaData($name) {
- if ((int) ($this->guid) > 0) {
- $md = get_metadata_byname($this->getGUID(), $name);
- } else {
- if (isset($this->temp_metadata[$name])) {
- return $this->temp_metadata[$name];
- }
- }
-
- if ($md && !is_array($md)) {
- return $md->value;
- } else if ($md && is_array($md)) {
- return metadata_array_to_values($md);
- }
-
- return null;
- }
-
- /**
- * Return an attribute or a piece of metadata.
- *
- * @param string $name
- * @return mixed
- */
- function __get($name) {
- return $this->get($name);
- }
-
- /**
- * Set an attribute or a piece of metadata.
- *
- * @param string $name
- * @param mixed $value
- * @return mixed
- */
- function __set($name, $value) {
- return $this->set($name, $value);
- }
-
- /**
- * Test if property is set either as an attribute or metadata.
- *
- * @tip Use isset($entity->property)
- *
- * @param string $name The name of the attribute or metadata.
- * @return bool
- */
- function __isset($name) {
- return $this->$name !== NULL;
- }
-
- /**
- * Unset a property from metadata or attribute.
- *
- * @warning If you use this to unset an attribute, you must save the object!
- *
- * @param string $name The name of the attribute or metadata.
- */
- function __unset($name) {
- if (array_key_exists($name, $this->attributes)) {
- $this->attributes[$name] = "";
- }
- else {
- $this->clearMetaData($name);
- }
- }
-
- /**
- * Set a piece of metadata.
- *
- * @tip Plugin authors should use the magic methods.
- *
- * @access private
- * @param string $name Name of the metadata
- * @param mixed $value Value of the metadata
- * @param string $value_type Types supported: integer and string. Will auto-identify if not set
- * @param bool $multiple (does not support associative arrays)
- * @return bool
- */
- public function setMetaData($name, $value, $value_type = "", $multiple = false) {
- if (is_array($value)) {
- unset($this->temp_metadata[$name]);
- remove_metadata($this->getGUID(), $name);
- foreach ($value as $v) {
- if ((int) $this->guid > 0) {
- $multiple = true;
- if (!create_metadata($this->getGUID(), $name, $v, $value_type,
- $this->getOwner(), $this->getAccessID(), $multiple)) {
- return false;
- }
- } else {
- if (($multiple) && (isset($this->temp_metadata[$name]))) {
- if (!is_array($this->temp_metadata[$name])) {
- $tmp = $this->temp_metadata[$name];
- $this->temp_metadata[$name] = array();
- $this->temp_metadata[$name][] = $tmp;
- }
-
- $this->temp_metadata[$name][] = $value;
- }
- else {
- $this->temp_metadata[$name] = $value;
- }
- }
- }
-
- return true;
- } else {
- unset($this->temp_metadata[$name]);
- if ((int) $this->guid > 0) {
- $result = create_metadata($this->getGUID(), $name, $value, $value_type, $this->getOwner(), $this->getAccessID(), $multiple);
- return (bool)$result;
- } else {
- if (($multiple) && (isset($this->temp_metadata[$name]))) {
- if (!is_array($this->temp_metadata[$name])) {
- $tmp = $this->temp_metadata[$name];
- $this->temp_metadata[$name] = array();
- $this->temp_metadata[$name][] = $tmp;
- }
-
- $this->temp_metadata[$name][] = $value;
- }
- else {
- $this->temp_metadata[$name] = $value;
- }
-
- return true;
- }
- }
- }
-
- /**
- * Remove metadata
- *
- * @warning Calling this with no or empty arguments will clear all metadata on the entity.
- * @param string The name of the metadata to clear
- * @return mixed The n
- */
- public function clearMetaData($name = "") {
- if (empty($name)) {
- return clear_metadata($this->getGUID());
- } else {
- return remove_metadata($this->getGUID(), $name);
- }
- }
-
-
- /**
- * Get a piece of volatile (non-persisted) data on this entity.
- *
- * @param string $name The name of the volatile data
- * @return mixed The value or NULL if not found.
- */
- public function getVolatileData($name) {
- if (!is_array($this->volatile)) {
- $this->volatile = array();
- }
-
- if (array_key_exists($name, $this->volatile)) {
- return $this->volatile[$name];
- } else {
- return NULL;
- }
- }
-
-
- /**
- * Set a piece of volatile (non-persisted) data on this entity
- *
- * @param string $name
- * @param mixed $value
- */
- public function setVolatileData($name, $value) {
- if (!is_array($this->volatile)) {
- $this->volatile = array();
- }
-
- $this->volatile[$name] = $value;
- }
-
-
- /**
- * Remove all relationships to and from this entity.
- *
- * @return true
- * @todo This should actually return if it worked.
- * @see ElggEntity::addRelationship()
- * @see ElggEntity::removeRelationship()
- */
- public function clearRelationships() {
- remove_entity_relationships($this->getGUID());
- remove_entity_relationships($this->getGUID(), "", true);
- return true;
- }
-
- /**
- * Add a relationship between this an another entity.
- *
- * @tip Read the relationship like "$guid is a $relationship of this entity."
- *
- * @param int $guid Entity to link to.
- * @param string $relationship The type of relationship.
- * @return bool
- * @see ElggEntity::removeRelationship()
- * @see ElggEntity::clearRelationships()
- */
- public function addRelationship($guid, $relationship) {
- return add_entity_relationship($this->getGUID(), $relationship, $guid);
- }
-
- /**
- * Remove a relationship
- *
- * @param int $guid
- * @param str $relationship
- * @return bool
- * @see ElggEntity::addRelationship()
- * @see ElggEntity::clearRelationships()
- */
- public function removeRelationship($guid, $relationship) {
- return remove_entity_relationship($this->getGUID(), $relationship, $guid);
- }
-
- /**
- * Adds a private setting to this entity.
- *
- * Private settings are similar to metadata but will not
- * be searched and there are fewer helper functions for them.
- *
- * @param $name
- * @param $value
- * @return bool
- * @link http://docs.elgg.org/DataModel/Entities/PrivateSettings
- */
- function setPrivateSetting($name, $value) {
- return set_private_setting($this->getGUID(), $name, $value);
- }
-
- /**
- * Returns a private setting value
- *
- * @param $name
- * @return mixed
- */
- function getPrivateSetting($name) {
- return get_private_setting($this->getGUID(), $name);
- }
-
- /**
- * Removes private setting
- *
- * @param $name
- * @return bool
- */
- function removePrivateSetting($name) {
- return remove_private_setting($this->getGUID(), $name);
- }
-
- /**
- * Adds an annotation to an entity.
- *
- * @warning By default, annotations are private.
- *
- * @param string $name
- * @param mixed $value
- * @param int $access_id
- * @param int $owner_id
- * @param string $vartype
- * @link http://docs.elgg.org/DataModel/Annotations
- */
- function annotate($name, $value, $access_id = ACCESS_PRIVATE, $owner_id = 0, $vartype = "") {
- if ((int) $this->guid > 0) {
- return create_annotation($this->getGUID(), $name, $value, $vartype, $owner_id, $access_id);
- } else {
- $this->temp_annotations[$name] = $value;
- }
- return true;
- }
-
- /**
- * Returns an array of annotations.
- *
- * @param string $name
- * @param int $limit
- * @param int $offset
- * @param string $order asc or desc
- * @return array
- */
- function getAnnotations($name, $limit = 50, $offset = 0, $order="asc") {
- if ((int) ($this->guid) > 0) {
- return get_annotations($this->getGUID(), "", "", $name, "", 0, $limit, $offset, $order);
- } else {
- return $this->temp_annotations[$name];
- }
- }
-
- /**
- * Remove an annotation or all annotations for this entity.
- *
- * @warning Calling this method with no or an empty argument will remove all annotations on the entity.
- *
- * @param string $name
- * @return bool
- */
- function clearAnnotations($name = "") {
- return clear_annotations($this->getGUID(), $name);
- }
-
- /**
- * Count annotations.
- *
- * @param string $name The type of annotation.
- * @return int
- */
- function countAnnotations($name = "") {
- return count_annotations($this->getGUID(), "", "", $name);
- }
-
- /**
- * Get the average of an integer type annotation.
- *
- * @param string $name
- * @return int
- */
- function getAnnotationsAvg($name) {
- return get_annotations_avg($this->getGUID(), "", "", $name);
- }
-
- /**
- * Get the sum of integer type annotations of a given name.
- *
- * @param string $name
- * @return int
- */
- function getAnnotationsSum($name) {
- return get_annotations_sum($this->getGUID(), "", "", $name);
- }
-
- /**
- * Get the minimum of integer type annotations of given name.
- *
- * @param string $name
- * @return int
- */
- function getAnnotationsMin($name) {
- return get_annotations_min($this->getGUID(), "", "", $name);
- }
-
- /**
- * Get the maximum of integer type annotations of a given name.
- *
- * @param string $name
- * @return int
- */
- function getAnnotationsMax($name) {
- return get_annotations_max($this->getGUID(), "", "", $name);
- }
-
- /**
- * Gets an array of entities with a relationship to this entity.
- *
- * @param string $relationship Relationship type (eg "friends")
- * @param true|false $inverse Is this an inverse relationship?
- * @param int $limit Number of elements to return
- * @param int $offset Indexing offset
- * @return array|false An array of entities or false on failure
- */
- function getEntitiesFromRelationship($relationship, $inverse = false, $limit = 50, $offset = 0) {
- return elgg_get_entities_from_relationship(array(
- 'relationship' => $relationship,
- 'relationship_guid' => $this->getGUID(),
- 'inverse_relationship' => $inverse,
- 'limit' => $limit,
- 'offset' => $offset
- ));
- }
-
- /**
- * Gets the number of of entities from a specific relationship type
- *
- * @param string $relationship Relationship type (eg "friends")
- * @param bool $inverse_relationship
- * @return int|false The number of entities or false on failure
- */
- function countEntitiesFromRelationship($relationship, $inverse_relationship = FALSE) {
- return elgg_get_entities_from_relationship(array(
- 'relationship' => $relationship,
- 'relationship_guid' => $this->getGUID(),
- 'inverse_relationship' => $inverse_relationship,
- 'count' => TRUE
- ));
- }
-
- /**
- * Can a user edit this entity.
- *
- * @param int $user_guid The user GUID, optionally (defaults to the currently logged in user)
- * @return true|false
- */
- function canEdit($user_guid = 0) {
- return can_edit_entity($this->getGUID(), $user_guid);
- }
-
- /**
- * Can a user edit metadata on this entity
- *
- * @param ElggMetadata $metadata The piece of metadata to specifically check
- * @param int $user_guid The user GUID, optionally (defaults to the currently logged in user)
- * @return true|false
- */
- function canEditMetadata($metadata = null, $user_guid = 0) {
- return can_edit_entity_metadata($this->getGUID(), $user_guid, $metadata);
- }
-
- /**
- * Can a user write to this entity's container.
- *
- * @param int $user_guid The user.
- * @return bool
- */
- public function canWriteToContainer($user_guid = 0) {
- return can_write_to_container($user_guid, $this->getGUID());
- }
-
- /**
- * Returns the access_id.
- *
- * @return int The access ID
- */
- public function getAccessID() {
- return $this->get('access_id');
- }
-
- /**
- * Returns the guid.
- *
- * @return int GUID
- */
- public function getGUID() {
- return $this->get('guid');
- }
-
- /**
- * Return the guid of the entity's owner.
- *
- * @return int The owner GUID
- */
- public function getOwner() {
- return $this->get('owner_guid');
- }
-
- /**
- * Returns the ElggEntity or child object of the owner of the entity.
- *
- * @return ElggEntity The owning user
- */
- public function getOwnerEntity() {
- return get_entity($this->get('owner_guid'));
- }
-
- /**
- * Returns the entity type
- *
- * @return string Entity type
- */
- public function getType() {
- return $this->get('type');
- }
-
- /**
- * Returns the entity subtype string
- *
- * @note This returns a string. If you want the id, use ElggEntity::subtype.
- *
- * @return string The entity subtype
- */
- public function getSubtype() {
- // If this object hasn't been saved, then return the subtype string.
- if (!((int) $this->guid > 0)) {
- return $this->get('subtype');
- }
-
- return get_subtype_from_id($this->get('subtype'));
- }
-
- /**
- * Returns the UNIX epoch time that this entity was created
- *
- * @return int UNIX epoch time
- */
- public function getTimeCreated() {
- return $this->get('time_created');
- }
-
- /**
- * Returns the UNIX epoch time that this entity was last updated
- *
- * @return int UNIX epoch time
- */
- public function getTimeUpdated() {
- return $this->get('time_updated');
- }
-
- /**
- * Returns the URL for this entity
- *
- * @return string The URL
- * @see register_entity_url_handler()
- * @see ElggEntity::setURL()
- */
- public function getURL() {
- if (!empty($this->url_override)) {
- return $this->url_override;
- }
- return get_entity_url($this->getGUID());
- }
-
- /**
- * Overrides the URL returned by getURL()
- *
- * @warning This override exists only for the life of the object.
- *
- * @param string $url The new item URL
- * @return string The URL
- */
- public function setURL($url) {
- $this->url_override = $url;
- return $url;
- }
-
- /**
- * Returns a URL for the entity's icon.
- *
- * @param string $size Either 'large', 'medium', 'small' or 'tiny'
- * @return string The url or false if no url could be worked out.
- * @see get_entity_icon_url()
- */
- public function getIcon($size = 'medium') {
- if (isset($this->icon_override[$size])) {
- return $this->icon_override[$size];
- }
- return get_entity_icon_url($this, $size);
- }
-
- /**
- * Set an icon override for an icon and size.
- *
- * @warning This override exists only for the life of the object.
- *
- * @param string $url The url of the icon.
- * @param string $size The size its for.
- * @return bool
- */
- public function setIcon($url, $size = 'medium') {
- $url = sanitise_string($url);
- $size = sanitise_string($size);
-
- if (!$this->icon_override) {
- $this->icon_override = array();
- }
- $this->icon_override[$size] = $url;
-
- return true;
- }
-
- /**
- * Tests to see whether the object has been fully loaded.
- *
- * @return bool
- */
- public function isFullyLoaded() {
- return ! ($this->attributes['tables_loaded'] < $this->attributes['tables_split']);
- }
-
- /**
- * Save attributes to the entities table.
- *
- * @return bool
- * @throws IOException
- */
- public function save() {
- $guid = (int) $this->guid;
- if ($guid > 0) {
- cache_entity($this);
-
- return update_entity(
- $this->get('guid'),
- $this->get('owner_guid'),
- $this->get('access_id'),
- $this->get('container_guid')
- );
- } else {
- // Create a new entity (nb: using attribute array directly 'cos set function does something special!)
- $this->attributes['guid'] = create_entity($this->attributes['type'], $this->attributes['subtype'], $this->attributes['owner_guid'], $this->attributes['access_id'], $this->attributes['site_guid'], $this->attributes['container_guid']);
- if (!$this->attributes['guid']) {
- throw new IOException(elgg_echo('IOException:BaseEntitySaveFailed'));
- }
-
- // Save any unsaved metadata
- // @todo How to capture extra information (access id etc)
- if (sizeof($this->temp_metadata) > 0) {
- foreach($this->temp_metadata as $name => $value) {
- $this->$name = $value;
- unset($this->temp_metadata[$name]);
- }
- }
-
- // Save any unsaved annotations metadata.
- // @todo How to capture extra information (access id etc)
- if (sizeof($this->temp_annotations) > 0) {
- foreach($this->temp_annotations as $name => $value) {
- $this->annotate($name, $value);
- unset($this->temp_annotations[$name]);
- }
- }
-
- // set the subtype to id now rather than a string
- $this->attributes['subtype'] = get_subtype_id($this->attributes['type'], $this->attributes['subtype']);
-
- // Cache object handle
- if ($this->attributes['guid']) {
- cache_entity($this);
- }
-
- return $this->attributes['guid'];
- }
- }
-
- /**
- * Loads attributes from the entities table into the object.
- *
- * @param int $guid
- * @return bool
- */
- protected function load($guid) {
- $row = get_entity_as_row($guid);
-
- if ($row) {
- // Create the array if necessary - all subclasses should test before creating
- if (!is_array($this->attributes)) {
- $this->attributes = array();
- }
-
- // Now put these into the attributes array as core values
- $objarray = (array) $row;
- foreach($objarray as $key => $value) {
- $this->attributes[$key] = $value;
- }
-
- // Increment the portion counter
- if (!$this->isFullyLoaded()) {
- $this->attributes['tables_loaded']++;
- }
-
- // Cache object handle
- if ($this->attributes['guid']) {
- cache_entity($this);
- }
-
- return true;
- }
-
- return false;
- }
-
- /**
- * Disable this entity.
- *
- * Disabled entities are not returned by getter functions.
- * To enable an entity, use {@link enable_entity()}.
- *
- * Recursively disabling an entity will disable all entities
- * owned or contained by the parent entity.
- *
- * @internal Disabling an entity sets the 'enabled' column to 'no'.
- *
- * @param string $reason Optional reason
- * @param bool $recursive Recursively disable all contained entities?
- * @return bool
- * @see enable_entity()
- * @see ElggEntity::enable()
- */
- public function disable($reason = "", $recursive = true) {
- return disable_entity($this->get('guid'), $reason, $recursive);
- }
-
- /**
- * Enable an entity
- *
- * @warning Disabled entities can't be loaded unless
- * {@link access_show_hidden_entities(true)} has been called.
- *
- * @see enable_entity()
- * @see access_show_hiden_entities()
- * @return bool
- */
- public function enable() {
- return enable_entity($this->get('guid'));
- }
-
- /**
- * Is this entity enabled?
- *
- * @return boolean
- */
- public function isEnabled() {
- if ($this->enabled == 'yes') {
- return true;
- }
-
- return false;
- }
-
- /**
- * Delete this entity.
- *
- * @return bool
- */
- public function delete() {
- return delete_entity($this->get('guid'));
- }
-
- /*
- * LOCATABLE INTERFACE
- */
-
- /**
- * Sets the 'location' metadata for the entity
- *
- * @todo Unimplemented
- * @param string $location
- * @return true
- */
- public function setLocation($location) {
- $location = sanitise_string($location);
-
- $this->location = $location;
-
- return true;
- }
-
- /**
- * Set latitude and longitude metadata tags for a given entity.
- *
- * @param float $lat
- * @param float $long
- * @return true
- * @todo Unimplemented
- */
- public function setLatLong($lat, $long) {
- $lat = sanitise_string($lat);
- $long = sanitise_string($long);
-
- $this->set('geo:lat', $lat);
- $this->set('geo:long', $long);
-
- return true;
- }
-
- /**
- * Return the entity's latitude.
- *
- * @return int
- * @todo Unimplemented
- */
- public function getLatitude() {
- return $this->get('geo:lat');
- }
-
- /**
- * Return the entity's longitude
- *
- * @return Int
- */
- public function getLongitude() {
- return $this->get('geo:long');
- }
-
- /**
- * Return the entity's location
- *
- * @return string
- */
- public function getLocation() {
- return $this->get('location');
- }
-
- /*
- * NOTABLE INTERFACE
- */
-
- /**
- * Set the time and duration of an object
- *
- * @param int $hour If ommitted, now is assumed.
- * @param int $minute If ommitted, now is assumed.
- * @param int $second If ommitted, now is assumed.
- * @param int $day If ommitted, now is assumed.
- * @param int $month If ommitted, now is assumed.
- * @param int $year If ommitted, now is assumed.
- * @param int $duration Duration of event, remainder of the day is assumed.
- * @return true
- * @todo Unimplemented
- */
- public function setCalendarTimeAndDuration($hour = NULL, $minute = NULL, $second = NULL, $day = NULL, $month = NULL, $year = NULL, $duration = NULL) {
- $start = mktime($hour, $minute, $second, $month, $day, $year);
- $end = $start + abs($duration);
- if (!$duration) {
- $end = get_day_end($day,$month,$year);
- }
-
- $this->calendar_start = $start;
- $this->calendar_end = $end;
-
- return true;
- }
-
- /**
- * Returns the start timestamp.
- *
- * @return int
- * @todo Unimplemented
- */
- public function getCalendarStartTime() {
- return (int)$this->calendar_start;
- }
-
- /**
- * Returns the end timestamp.
- *
- * @todo Unimplemented
- */
- public function getCalendarEndTime() {
- return (int)$this->calendar_end;
- }
-
- /*
- * EXPORTABLE INTERFACE
- */
-
- /**
- * Returns an array of fields which can be exported.
- *
- * @return array
- */
- public function getExportableValues() {
- return array(
- 'guid',
- 'type',
- 'subtype',
- 'time_created',
- 'time_updated',
- 'container_guid',
- 'owner_guid',
- 'site_guid'
- );
- }
-
- /**
- * Export this class into an array of ODD Elements containing all necessary fields.
- * Override if you wish to return more information than can be found in $this->attributes (shouldn't happen)
- *
- * @return array
- */
- public function export() {
- $tmp = array();
-
- // Generate uuid
- $uuid = guid_to_uuid($this->getGUID());
-
- // Create entity
- $odd = new ODDEntity(
- $uuid,
- $this->attributes['type'],
- get_subtype_from_id($this->attributes['subtype'])
- );
-
- $tmp[] = $odd;
-
- $exportable_values = $this->getExportableValues();
-
- // Now add its attributes
- foreach ($this->attributes as $k => $v) {
- $meta = NULL;
-
- if (in_array( $k, $exportable_values)) {
- switch ($k) {
- case 'guid' : // Dont use guid in OpenDD
- case 'type' : // Type and subtype already taken care of
- case 'subtype' :
- break;
-
- case 'time_created' : // Created = published
- $odd->setAttribute('published', date("r", $v));
- break;
-
- case 'site_guid' : // Container
- $k = 'site_uuid';
- $v = guid_to_uuid($v);
- $meta = new ODDMetaData($uuid . "attr/$k/", $uuid, $k, $v);
- break;
-
- case 'container_guid' : // Container
- $k = 'container_uuid';
- $v = guid_to_uuid($v);
- $meta = new ODDMetaData($uuid . "attr/$k/", $uuid, $k, $v);
- break;
-
- case 'owner_guid' : // Convert owner guid to uuid, this will be stored in metadata
- $k = 'owner_uuid';
- $v = guid_to_uuid($v);
- $meta = new ODDMetaData($uuid . "attr/$k/", $uuid, $k, $v);
- break;
-
- default :
- $meta = new ODDMetaData($uuid . "attr/$k/", $uuid, $k, $v);
- }
-
- // set the time of any metadata created
- if ($meta) {
- $meta->setAttribute('published', date("r",$this->time_created));
- $tmp[] = $meta;
- }
- }
- }
-
- // Now we do something a bit special.
- /*
- * This provides a rendered view of the entity to foreign sites.
- */
-
- elgg_set_viewtype('default');
- $view = elgg_view_entity($this, true);
- elgg_set_viewtype();
-
- $tmp[] = new ODDMetaData($uuid . "volatile/renderedentity/", $uuid, 'renderedentity', $view , 'volatile');
-
- return $tmp;
- }
-
- /*
- * IMPORTABLE INTERFACE
- */
-
- /**
- * Import data from an parsed ODD xml data array.
- *
- * @param array $data
- * @param int $version
- * @return true
- */
- public function import(ODD $data) {
- if (!($data instanceof ODDEntity)) {
- throw new InvalidParameterException(elgg_echo('InvalidParameterException:UnexpectedODDClass'));
- }
-
- // Set type and subtype
- $this->attributes['type'] = $data->getAttribute('class');
- $this->attributes['subtype'] = $data->getAttribute('subclass');
-
- // Set owner
- $this->attributes['owner_guid'] = get_loggedin_userid(); // Import as belonging to importer.
-
- // Set time
- $this->attributes['time_created'] = strtotime($data->getAttribute('published'));
- $this->attributes['time_updated'] = time();
-
- return true;
- }
-
- /*
- * SYSTEM LOG INTERFACE
- */
-
- /**
- * Return an identification for the object for storage in the system log.
- * This id must be an integer.
- *
- * @return int
- */
- public function getSystemLogID() {
- return $this->getGUID();
- }
-
- /**
- * Return the class name of the object.
- */
- public function getClassName() {
- return get_class($this);
- }
-
- /**
- * For a given ID, return the object associated with it.
- * This is used by the river functionality primarily.
- *
- * This is useful for checking access permissions etc on objects.
- * @return guid
- */
- public function getObjectFromID($id) {
- return get_entity($id);
- }
-
- /**
- * Returns the GUID of the owner of this entity.
- *
- * @return int Owner guid
- */
- public function getObjectOwnerGUID() {
- return $this->owner_guid;
- }
-
- /**
- * Returns tags for this entity.
- *
- * @warning Tags must be registered by {@link elgg_register_tag_metadata_name()}.
- *
- * @param array $tag_names Optionally restrict by tag metadata names.
- * @return array
- */
- public function getTags($tag_names = NULL) {
- global $CONFIG;
-
- if ($tag_names && !is_array($tag_names)) {
- $tag_names = array($tag_names);
- }
-
- $valid_tags = elgg_get_registered_tag_metadata_names();
- $entity_tags = array();
-
- foreach ($valid_tags as $tag_name) {
- if (is_array($tag_names) && !in_array($tag_name, $tag_names)) {
- continue;
- }
-
- if ($tags = $this->$tag_name) {
- // if a single tag, metadata returns a string.
- // if multiple tags, metadata returns an array.
- if (is_array($tags)) {
- $entity_tags = array_merge($entity_tags, $tags);
- } else {
- $entity_tags[] = $tags;
- }
- }
- }
-
- return $entity_tags;
- }
-
- /*
- * ITERATOR INTERFACE
- */
-
- /*
- * This lets an entity's attributes be displayed using foreach as a normal array.
- * Example: http://www.sitepoint.com/print/php5-standard-library
- */
- private $valid = FALSE;
-
- function rewind() {
- $this->valid = (FALSE !== reset($this->attributes));
- }
-
- function current() {
- return current($this->attributes);
- }
-
- function key() {
- return key($this->attributes);
- }
-
- function next() {
- $this->valid = (FALSE !== next($this->attributes));
- }
-
- function valid() {
- return $this->valid;
- }
-
- /*
- * ARRAY ACCESS INTERFACE
- */
-
- /*
- * This lets an entity's attributes be accessed like an associative array.
- * Example: http://www.sitepoint.com/print/php5-standard-library
- */
- function offsetSet($key, $value) {
- if ( array_key_exists($key, $this->attributes) ) {
- $this->attributes[$key] = $value;
- }
- }
-
- function offsetGet($key) {
- if ( array_key_exists($key, $this->attributes) ) {
- return $this->attributes[$key];
- }
- }
-
- function offsetUnset($key) {
- if ( array_key_exists($key, $this->attributes) ) {
- $this->attributes[$key] = ""; // Full unsetting is dangerious for our objects
- }
- }
-
- function offsetExists($offset) {
- return array_key_exists($offset, $this->attributes);
- }
+<?php
+/**
+ * The parent class for all Elgg Entities.
+ *
+ * An ElggEntity is one of the basic data models in Elgg. It is the primary
+ * means of storing and retrieving data from the database. An ElggEntity
+ * represents one row of the entities table.
+ *
+ * The ElggEntity class handles CRUD operations for the entities table.
+ * ElggEntity should always be extended by another class to handle CRUD
+ * operations on the type-specific table.
+ *
+ * ElggEntity uses magic methods for get and set, so any property that isn't
+ * declared will be assumed to be metadata and written to the database
+ * as metadata on the object. All children classes must declare which
+ * properties are columns of the type table or they will be assumed
+ * to be metadata. See ElggObject::initialise_entities() for examples.
+ *
+ * Core supports 4 types of entities: ElggObject, ElggUser, ElggGroup, and
+ * ElggSite.
+ *
+ * @tip Most plugin authors will want to extend the ElggObject class
+ * instead of this class.
+ *
+ * @package Elgg.Core
+ * @subpackage DataMode.Entities
+ * @link http://docs.elgg.org/DataModel/ElggEntity
+ */
+abstract class ElggEntity implements
+ Notable, // Calendar interface
+ Locatable, // Geocoding interface
+ Exportable, // Allow export of data
+ Importable, // Allow import of data
+ Loggable, // Can events related to this object class be logged
+ Iterator, // Override foreach behaviour
+ ArrayAccess // Override for array access
+{
+ /**
+ * The main attributes of an entity.
+ * Blank entries for all database fields should be created by the constructor.
+ * Subclasses should add to this in their constructors.
+ * Any field not appearing in this will be viewed as a
+ */
+ protected $attributes;
+
+ /**
+ * If set, overrides the value of getURL()
+ */
+ protected $url_override;
+
+ /**
+ * Icon override, overrides the value of getIcon().
+ */
+ protected $icon_override;
+
+ /**
+ * Holds metadata until entity is saved. Once the entity is saved, metadata are written immediately to the database.
+ */
+ protected $temp_metadata;
+
+ /**
+ * Holds annotations until entity is saved. Once the entity is saved, annotations are written immediately to the database.
+ */
+ protected $temp_annotations;
+
+
+ /**
+ * Volatile data structure for this object, allows for storage of data
+ * in-memory that isn't sync'd back to the metadata table.
+ */
+ protected $volatile;
+
+ /**
+ * Initialise the attributes array.
+ *
+ * This is vital to distinguish between metadata and base parameters.
+ *
+ * @return void
+ */
+ protected function initialise_attributes() {
+ initialise_entity_cache();
+
+ // Create attributes array if not already created
+ if (!is_array($this->attributes)) {
+ $this->attributes = array();
+ }
+ if (!is_array($this->temp_metadata)) {
+ $this->temp_metadata = array();
+ }
+ if (!is_array($this->temp_annotations)) {
+ $this->temp_annotations = array();
+ }
+ if (!is_array($this->volatile)) {
+ $this->volatile = array();
+ }
+
+ $this->attributes['guid'] = "";
+ $this->attributes['type'] = "";
+ $this->attributes['subtype'] = "";
+
+ $this->attributes['owner_guid'] = get_loggedin_userid();
+ $this->attributes['container_guid'] = get_loggedin_userid();
+
+ $this->attributes['site_guid'] = 0;
+ $this->attributes['access_id'] = ACCESS_PRIVATE;
+ $this->attributes['time_created'] = "";
+ $this->attributes['time_updated'] = "";
+ $this->attributes['last_action'] = '';
+ $this->attributes['enabled'] = "yes";
+
+ // There now follows a bit of a hack
+ /* Problem: To speed things up, some objects are split over several tables, this means that it requires
+ * n number of database reads to fully populate an entity. This causes problems for caching and create events
+ * since it is not possible to tell whether a subclassed entity is complete.
+ * Solution: We have two counters, one 'tables_split' which tells whatever is interested how many tables
+ * are going to need to be searched in order to fully populate this object, and 'tables_loaded' which is how
+ * many have been loaded thus far.
+ * If the two are the same then this object is complete.
+ *
+ * Use: isFullyLoaded() to check
+ */
+ $this->attributes['tables_split'] = 1;
+ $this->attributes['tables_loaded'] = 0;
+ }
+
+ /**
+ * Clone an entity
+ *
+ * Resets the guid so that the entity can be saved as a distinct entity from
+ * the original. Creation time will be set when this new entity is saved.
+ * The owner and container guids come from the original entity. The clone
+ * method copies metadata but does not copy annotations or private settings.
+ *
+ * @note metadata will have its owner and access id set when the entity is saved
+ * and it will be the same as that of the entity.
+ */
+ public function __clone() {
+ $orig_entity = get_entity($this->guid);
+ if (!$orig_entity) {
+ elgg_log("Failed to clone entity with GUID $this->guid", "ERROR");
+ return;
+ }
+
+ $metadata_array = get_metadata_for_entity($this->guid);
+
+ $this->attributes['guid'] = "";
+
+ $this->attributes['subtype'] = $orig_entity->getSubtype();
+
+ // copy metadata over to new entity - slightly convoluted due to
+ // handling of metadata arrays
+ if (is_array($metadata_array)) {
+ // create list of metadata names
+ $metadata_names = array();
+ foreach ($metadata_array as $metadata) {
+ $metadata_names[] = $metadata['name'];
+ }
+ // arrays are stored with multiple enties per name
+ $metadata_names = array_unique($metadata_names);
+
+ // move the metadata over
+ foreach ($metadata_names as $name) {
+ $this->set($name, $orig_entity->$name);
+ }
+ }
+ }
+
+ /**
+ * Return the value of a property.
+ *
+ * If $name is defined in $this->attributes that value is returned, otherwise it will
+ * pull from the entity's metadata.
+ *
+ * Q: Why are we not using __get overload here?
+ * A: Because overload operators cause problems during subclassing, so we put the code here and
+ * create overloads in subclasses.
+ * @todo What problems are these?
+ *
+ * @warning Subtype is returned as an id rather than the subtype string. Use getSubtype()
+ * to get the subtype string.
+ *
+ * @param string $name
+ * @return mixed Returns the value of a given value, or null.
+ */
+ public function get($name) {
+ // See if its in our base attributes
+ if (isset($this->attributes[$name])) {
+ return $this->attributes[$name];
+ }
+
+ // No, so see if its in the meta data for this entity
+ $meta = $this->getMetaData($name);
+
+ // getMetaData returns NULL if $name is not found
+ return $meta;
+ }
+
+ /**
+ * Sets the value of a property.
+ *
+ * If $name is defined in $this->attributes that value is set, otherwise it will
+ * set the appropriate item of metadata.
+ *
+ * @warning It is important that your class populates $this->attributes with keys for all base attributes, anything
+ * not in their gets set as METADATA.
+ *
+ * Q: Why are we not using __set overload here?
+ * A: Because overload operators cause problems during subclassing, so we put the code here and
+ * create overloads in subclasses.
+ * @todo What problems?
+ *
+ * @param string $name
+ * @param mixed $value
+ */
+ public function set($name, $value) {
+ if (array_key_exists($name, $this->attributes)) {
+ // Certain properties should not be manually changed!
+ switch ($name) {
+ case 'guid':
+ case 'time_created':
+ case 'time_updated':
+ case 'last_action':
+ return FALSE;
+ break;
+ default:
+ $this->attributes[$name] = $value;
+ break;
+ }
+ } else {
+ return $this->setMetaData($name, $value);
+ }
+
+ return TRUE;
+ }
+
+ /**
+ * Return the value of a piece of metadata.
+ *
+ * @param string $name
+ * @return mixed The value, or NULL if not found.
+ */
+ public function getMetaData($name) {
+ if ((int) ($this->guid) > 0) {
+ $md = get_metadata_byname($this->getGUID(), $name);
+ } else {
+ if (isset($this->temp_metadata[$name])) {
+ return $this->temp_metadata[$name];
+ }
+ }
+
+ if ($md && !is_array($md)) {
+ return $md->value;
+ } else if ($md && is_array($md)) {
+ return metadata_array_to_values($md);
+ }
+
+ return null;
+ }
+
+ /**
+ * Return an attribute or a piece of metadata.
+ *
+ * @param string $name
+ * @return mixed
+ */
+ function __get($name) {
+ return $this->get($name);
+ }
+
+ /**
+ * Set an attribute or a piece of metadata.
+ *
+ * @param string $name
+ * @param mixed $value
+ * @return mixed
+ */
+ function __set($name, $value) {
+ return $this->set($name, $value);
+ }
+
+ /**
+ * Test if property is set either as an attribute or metadata.
+ *
+ * @tip Use isset($entity->property)
+ *
+ * @param string $name The name of the attribute or metadata.
+ * @return bool
+ */
+ function __isset($name) {
+ return $this->$name !== NULL;
+ }
+
+ /**
+ * Unset a property from metadata or attribute.
+ *
+ * @warning If you use this to unset an attribute, you must save the object!
+ *
+ * @param string $name The name of the attribute or metadata.
+ */
+ function __unset($name) {
+ if (array_key_exists($name, $this->attributes)) {
+ $this->attributes[$name] = "";
+ }
+ else {
+ $this->clearMetaData($name);
+ }
+ }
+
+ /**
+ * Set a piece of metadata.
+ *
+ * @tip Plugin authors should use the magic methods.
+ *
+ * @access private
+ * @param string $name Name of the metadata
+ * @param mixed $value Value of the metadata
+ * @param string $value_type Types supported: integer and string. Will auto-identify if not set
+ * @param bool $multiple (does not support associative arrays)
+ * @return bool
+ */
+ public function setMetaData($name, $value, $value_type = "", $multiple = false) {
+ if (is_array($value)) {
+ unset($this->temp_metadata[$name]);
+ remove_metadata($this->getGUID(), $name);
+ foreach ($value as $v) {
+ if ((int) $this->guid > 0) {
+ $multiple = true;
+ if (!create_metadata($this->getGUID(), $name, $v, $value_type,
+ $this->getOwner(), $this->getAccessID(), $multiple)) {
+ return false;
+ }
+ } else {
+ if (($multiple) && (isset($this->temp_metadata[$name]))) {
+ if (!is_array($this->temp_metadata[$name])) {
+ $tmp = $this->temp_metadata[$name];
+ $this->temp_metadata[$name] = array();
+ $this->temp_metadata[$name][] = $tmp;
+ }
+
+ $this->temp_metadata[$name][] = $value;
+ }
+ else {
+ $this->temp_metadata[$name] = $value;
+ }
+ }
+ }
+
+ return true;
+ } else {
+ unset($this->temp_metadata[$name]);
+ if ((int) $this->guid > 0) {
+ $result = create_metadata($this->getGUID(), $name, $value, $value_type, $this->getOwner(), $this->getAccessID(), $multiple);
+ return (bool)$result;
+ } else {
+ if (($multiple) && (isset($this->temp_metadata[$name]))) {
+ if (!is_array($this->temp_metadata[$name])) {
+ $tmp = $this->temp_metadata[$name];
+ $this->temp_metadata[$name] = array();
+ $this->temp_metadata[$name][] = $tmp;
+ }
+
+ $this->temp_metadata[$name][] = $value;
+ }
+ else {
+ $this->temp_metadata[$name] = $value;
+ }
+
+ return true;
+ }
+ }
+ }
+
+ /**
+ * Remove metadata
+ *
+ * @warning Calling this with no or empty arguments will clear all metadata on the entity.
+ * @param string The name of the metadata to clear
+ * @return mixed The n
+ */
+ public function clearMetaData($name = "") {
+ if (empty($name)) {
+ return clear_metadata($this->getGUID());
+ } else {
+ return remove_metadata($this->getGUID(), $name);
+ }
+ }
+
+
+ /**
+ * Get a piece of volatile (non-persisted) data on this entity.
+ *
+ * @param string $name The name of the volatile data
+ * @return mixed The value or NULL if not found.
+ */
+ public function getVolatileData($name) {
+ if (!is_array($this->volatile)) {
+ $this->volatile = array();
+ }
+
+ if (array_key_exists($name, $this->volatile)) {
+ return $this->volatile[$name];
+ } else {
+ return NULL;
+ }
+ }
+
+
+ /**
+ * Set a piece of volatile (non-persisted) data on this entity
+ *
+ * @param string $name
+ * @param mixed $value
+ */
+ public function setVolatileData($name, $value) {
+ if (!is_array($this->volatile)) {
+ $this->volatile = array();
+ }
+
+ $this->volatile[$name] = $value;
+ }
+
+
+ /**
+ * Remove all relationships to and from this entity.
+ *
+ * @return true
+ * @todo This should actually return if it worked.
+ * @see ElggEntity::addRelationship()
+ * @see ElggEntity::removeRelationship()
+ */
+ public function clearRelationships() {
+ remove_entity_relationships($this->getGUID());
+ remove_entity_relationships($this->getGUID(), "", true);
+ return true;
+ }
+
+ /**
+ * Add a relationship between this an another entity.
+ *
+ * @tip Read the relationship like "$guid is a $relationship of this entity."
+ *
+ * @param int $guid Entity to link to.
+ * @param string $relationship The type of relationship.
+ * @return bool
+ * @see ElggEntity::removeRelationship()
+ * @see ElggEntity::clearRelationships()
+ */
+ public function addRelationship($guid, $relationship) {
+ return add_entity_relationship($this->getGUID(), $relationship, $guid);
+ }
+
+ /**
+ * Remove a relationship
+ *
+ * @param int $guid
+ * @param str $relationship
+ * @return bool
+ * @see ElggEntity::addRelationship()
+ * @see ElggEntity::clearRelationships()
+ */
+ public function removeRelationship($guid, $relationship) {
+ return remove_entity_relationship($this->getGUID(), $relationship, $guid);
+ }
+
+ /**
+ * Adds a private setting to this entity.
+ *
+ * Private settings are similar to metadata but will not
+ * be searched and there are fewer helper functions for them.
+ *
+ * @param $name
+ * @param $value
+ * @return bool
+ * @link http://docs.elgg.org/DataModel/Entities/PrivateSettings
+ */
+ function setPrivateSetting($name, $value) {
+ return set_private_setting($this->getGUID(), $name, $value);
+ }
+
+ /**
+ * Returns a private setting value
+ *
+ * @param $name
+ * @return mixed
+ */
+ function getPrivateSetting($name) {
+ return get_private_setting($this->getGUID(), $name);
+ }
+
+ /**
+ * Removes private setting
+ *
+ * @param $name
+ * @return bool
+ */
+ function removePrivateSetting($name) {
+ return remove_private_setting($this->getGUID(), $name);
+ }
+
+ /**
+ * Adds an annotation to an entity.
+ *
+ * @warning By default, annotations are private.
+ *
+ * @param string $name
+ * @param mixed $value
+ * @param int $access_id
+ * @param int $owner_id
+ * @param string $vartype
+ * @link http://docs.elgg.org/DataModel/Annotations
+ */
+ function annotate($name, $value, $access_id = ACCESS_PRIVATE, $owner_id = 0, $vartype = "") {
+ if ((int) $this->guid > 0) {
+ return create_annotation($this->getGUID(), $name, $value, $vartype, $owner_id, $access_id);
+ } else {
+ $this->temp_annotations[$name] = $value;
+ }
+ return true;
+ }
+
+ /**
+ * Returns an array of annotations.
+ *
+ * @param string $name
+ * @param int $limit
+ * @param int $offset
+ * @param string $order asc or desc
+ * @return array
+ */
+ function getAnnotations($name, $limit = 50, $offset = 0, $order="asc") {
+ if ((int) ($this->guid) > 0) {
+ return get_annotations($this->getGUID(), "", "", $name, "", 0, $limit, $offset, $order);
+ } else {
+ return $this->temp_annotations[$name];
+ }
+ }
+
+ /**
+ * Remove an annotation or all annotations for this entity.
+ *
+ * @warning Calling this method with no or an empty argument will remove all annotations on the entity.
+ *
+ * @param string $name
+ * @return bool
+ */
+ function clearAnnotations($name = "") {
+ return clear_annotations($this->getGUID(), $name);
+ }
+
+ /**
+ * Count annotations.
+ *
+ * @param string $name The type of annotation.
+ * @return int
+ */
+ function countAnnotations($name = "") {
+ return count_annotations($this->getGUID(), "", "", $name);
+ }
+
+ /**
+ * Get the average of an integer type annotation.
+ *
+ * @param string $name
+ * @return int
+ */
+ function getAnnotationsAvg($name) {
+ return get_annotations_avg($this->getGUID(), "", "", $name);
+ }
+
+ /**
+ * Get the sum of integer type annotations of a given name.
+ *
+ * @param string $name
+ * @return int
+ */
+ function getAnnotationsSum($name) {
+ return get_annotations_sum($this->getGUID(), "", "", $name);
+ }
+
+ /**
+ * Get the minimum of integer type annotations of given name.
+ *
+ * @param string $name
+ * @return int
+ */
+ function getAnnotationsMin($name) {
+ return get_annotations_min($this->getGUID(), "", "", $name);
+ }
+
+ /**
+ * Get the maximum of integer type annotations of a given name.
+ *
+ * @param string $name
+ * @return int
+ */
+ function getAnnotationsMax($name) {
+ return get_annotations_max($this->getGUID(), "", "", $name);
+ }
+
+ /**
+ * Gets an array of entities with a relationship to this entity.
+ *
+ * @param string $relationship Relationship type (eg "friends")
+ * @param true|false $inverse Is this an inverse relationship?
+ * @param int $limit Number of elements to return
+ * @param int $offset Indexing offset
+ * @return array|false An array of entities or false on failure
+ */
+ function getEntitiesFromRelationship($relationship, $inverse = false, $limit = 50, $offset = 0) {
+ return elgg_get_entities_from_relationship(array(
+ 'relationship' => $relationship,
+ 'relationship_guid' => $this->getGUID(),
+ 'inverse_relationship' => $inverse,
+ 'limit' => $limit,
+ 'offset' => $offset
+ ));
+ }
+
+ /**
+ * Gets the number of of entities from a specific relationship type
+ *
+ * @param string $relationship Relationship type (eg "friends")
+ * @param bool $inverse_relationship
+ * @return int|false The number of entities or false on failure
+ */
+ function countEntitiesFromRelationship($relationship, $inverse_relationship = FALSE) {
+ return elgg_get_entities_from_relationship(array(
+ 'relationship' => $relationship,
+ 'relationship_guid' => $this->getGUID(),
+ 'inverse_relationship' => $inverse_relationship,
+ 'count' => TRUE
+ ));
+ }
+
+ /**
+ * Can a user edit this entity.
+ *
+ * @param int $user_guid The user GUID, optionally (defaults to the currently logged in user)
+ * @return true|false
+ */
+ function canEdit($user_guid = 0) {
+ return can_edit_entity($this->getGUID(), $user_guid);
+ }
+
+ /**
+ * Can a user edit metadata on this entity
+ *
+ * @param ElggMetadata $metadata The piece of metadata to specifically check
+ * @param int $user_guid The user GUID, optionally (defaults to the currently logged in user)
+ * @return true|false
+ */
+ function canEditMetadata($metadata = null, $user_guid = 0) {
+ return can_edit_entity_metadata($this->getGUID(), $user_guid, $metadata);
+ }
+
+ /**
+ * Can a user write to this entity's container.
+ *
+ * @param int $user_guid The user.
+ * @return bool
+ */
+ public function canWriteToContainer($user_guid = 0) {
+ return can_write_to_container($user_guid, $this->getGUID());
+ }
+
+ /**
+ * Returns the access_id.
+ *
+ * @return int The access ID
+ */
+ public function getAccessID() {
+ return $this->get('access_id');
+ }
+
+ /**
+ * Returns the guid.
+ *
+ * @return int GUID
+ */
+ public function getGUID() {
+ return $this->get('guid');
+ }
+
+ /**
+ * Return the guid of the entity's owner.
+ *
+ * @return int The owner GUID
+ */
+ public function getOwner() {
+ return $this->get('owner_guid');
+ }
+
+ /**
+ * Returns the ElggEntity or child object of the owner of the entity.
+ *
+ * @return ElggEntity The owning user
+ */
+ public function getOwnerEntity() {
+ return get_entity($this->get('owner_guid'));
+ }
+
+ /**
+ * Returns the entity type
+ *
+ * @return string Entity type
+ */
+ public function getType() {
+ return $this->get('type');
+ }
+
+ /**
+ * Returns the entity subtype string
+ *
+ * @note This returns a string. If you want the id, use ElggEntity::subtype.
+ *
+ * @return string The entity subtype
+ */
+ public function getSubtype() {
+ // If this object hasn't been saved, then return the subtype string.
+ if (!((int) $this->guid > 0)) {
+ return $this->get('subtype');
+ }
+
+ return get_subtype_from_id($this->get('subtype'));
+ }
+
+ /**
+ * Returns the UNIX epoch time that this entity was created
+ *
+ * @return int UNIX epoch time
+ */
+ public function getTimeCreated() {
+ return $this->get('time_created');
+ }
+
+ /**
+ * Returns the UNIX epoch time that this entity was last updated
+ *
+ * @return int UNIX epoch time
+ */
+ public function getTimeUpdated() {
+ return $this->get('time_updated');
+ }
+
+ /**
+ * Returns the URL for this entity
+ *
+ * @return string The URL
+ * @see register_entity_url_handler()
+ * @see ElggEntity::setURL()
+ */
+ public function getURL() {
+ if (!empty($this->url_override)) {
+ return $this->url_override;
+ }
+ return get_entity_url($this->getGUID());
+ }
+
+ /**
+ * Overrides the URL returned by getURL()
+ *
+ * @warning This override exists only for the life of the object.
+ *
+ * @param string $url The new item URL
+ * @return string The URL
+ */
+ public function setURL($url) {
+ $this->url_override = $url;
+ return $url;
+ }
+
+ /**
+ * Returns a URL for the entity's icon.
+ *
+ * @param string $size Either 'large', 'medium', 'small' or 'tiny'
+ * @return string The url or false if no url could be worked out.
+ * @see get_entity_icon_url()
+ */
+ public function getIcon($size = 'medium') {
+ if (isset($this->icon_override[$size])) {
+ return $this->icon_override[$size];
+ }
+ return get_entity_icon_url($this, $size);
+ }
+
+ /**
+ * Set an icon override for an icon and size.
+ *
+ * @warning This override exists only for the life of the object.
+ *
+ * @param string $url The url of the icon.
+ * @param string $size The size its for.
+ * @return bool
+ */
+ public function setIcon($url, $size = 'medium') {
+ $url = sanitise_string($url);
+ $size = sanitise_string($size);
+
+ if (!$this->icon_override) {
+ $this->icon_override = array();
+ }
+ $this->icon_override[$size] = $url;
+
+ return true;
+ }
+
+ /**
+ * Tests to see whether the object has been fully loaded.
+ *
+ * @return bool
+ */
+ public function isFullyLoaded() {
+ return ! ($this->attributes['tables_loaded'] < $this->attributes['tables_split']);
+ }
+
+ /**
+ * Save attributes to the entities table.
+ *
+ * @return bool
+ * @throws IOException
+ */
+ public function save() {
+ $guid = (int) $this->guid;
+ if ($guid > 0) {
+ cache_entity($this);
+
+ return update_entity(
+ $this->get('guid'),
+ $this->get('owner_guid'),
+ $this->get('access_id'),
+ $this->get('container_guid')
+ );
+ } else {
+ // Create a new entity (nb: using attribute array directly 'cos set function does something special!)
+ $this->attributes['guid'] = create_entity($this->attributes['type'], $this->attributes['subtype'], $this->attributes['owner_guid'], $this->attributes['access_id'], $this->attributes['site_guid'], $this->attributes['container_guid']);
+ if (!$this->attributes['guid']) {
+ throw new IOException(elgg_echo('IOException:BaseEntitySaveFailed'));
+ }
+
+ // Save any unsaved metadata
+ // @todo How to capture extra information (access id etc)
+ if (sizeof($this->temp_metadata) > 0) {
+ foreach($this->temp_metadata as $name => $value) {
+ $this->$name = $value;
+ unset($this->temp_metadata[$name]);
+ }
+ }
+
+ // Save any unsaved annotations metadata.
+ // @todo How to capture extra information (access id etc)
+ if (sizeof($this->temp_annotations) > 0) {
+ foreach($this->temp_annotations as $name => $value) {
+ $this->annotate($name, $value);
+ unset($this->temp_annotations[$name]);
+ }
+ }
+
+ // set the subtype to id now rather than a string
+ $this->attributes['subtype'] = get_subtype_id($this->attributes['type'], $this->attributes['subtype']);
+
+ // Cache object handle
+ if ($this->attributes['guid']) {
+ cache_entity($this);
+ }
+
+ return $this->attributes['guid'];
+ }
+ }
+
+ /**
+ * Loads attributes from the entities table into the object.
+ *
+ * @param int $guid
+ * @return bool
+ */
+ protected function load($guid) {
+ $row = get_entity_as_row($guid);
+
+ if ($row) {
+ // Create the array if necessary - all subclasses should test before creating
+ if (!is_array($this->attributes)) {
+ $this->attributes = array();
+ }
+
+ // Now put these into the attributes array as core values
+ $objarray = (array) $row;
+ foreach($objarray as $key => $value) {
+ $this->attributes[$key] = $value;
+ }
+
+ // Increment the portion counter
+ if (!$this->isFullyLoaded()) {
+ $this->attributes['tables_loaded']++;
+ }
+
+ // Cache object handle
+ if ($this->attributes['guid']) {
+ cache_entity($this);
+ }
+
+ return true;
+ }
+
+ return false;
+ }
+
+ /**
+ * Disable this entity.
+ *
+ * Disabled entities are not returned by getter functions.
+ * To enable an entity, use {@link enable_entity()}.
+ *
+ * Recursively disabling an entity will disable all entities
+ * owned or contained by the parent entity.
+ *
+ * @internal Disabling an entity sets the 'enabled' column to 'no'.
+ *
+ * @param string $reason Optional reason
+ * @param bool $recursive Recursively disable all contained entities?
+ * @return bool
+ * @see enable_entity()
+ * @see ElggEntity::enable()
+ */
+ public function disable($reason = "", $recursive = true) {
+ return disable_entity($this->get('guid'), $reason, $recursive);
+ }
+
+ /**
+ * Enable an entity
+ *
+ * @warning Disabled entities can't be loaded unless
+ * {@link access_show_hidden_entities(true)} has been called.
+ *
+ * @see enable_entity()
+ * @see access_show_hiden_entities()
+ * @return bool
+ */
+ public function enable() {
+ return enable_entity($this->get('guid'));
+ }
+
+ /**
+ * Is this entity enabled?
+ *
+ * @return boolean
+ */
+ public function isEnabled() {
+ if ($this->enabled == 'yes') {
+ return true;
+ }
+
+ return false;
+ }
+
+ /**
+ * Delete this entity.
+ *
+ * @return bool
+ */
+ public function delete() {
+ return delete_entity($this->get('guid'));
+ }
+
+ /*
+ * LOCATABLE INTERFACE
+ */
+
+ /**
+ * Sets the 'location' metadata for the entity
+ *
+ * @todo Unimplemented
+ * @param string $location
+ * @return true
+ */
+ public function setLocation($location) {
+ $location = sanitise_string($location);
+
+ $this->location = $location;
+
+ return true;
+ }
+
+ /**
+ * Set latitude and longitude metadata tags for a given entity.
+ *
+ * @param float $lat
+ * @param float $long
+ * @return true
+ * @todo Unimplemented
+ */
+ public function setLatLong($lat, $long) {
+ $lat = sanitise_string($lat);
+ $long = sanitise_string($long);
+
+ $this->set('geo:lat', $lat);
+ $this->set('geo:long', $long);
+
+ return true;
+ }
+
+ /**
+ * Return the entity's latitude.
+ *
+ * @return int
+ * @todo Unimplemented
+ */
+ public function getLatitude() {
+ return $this->get('geo:lat');
+ }
+
+ /**
+ * Return the entity's longitude
+ *
+ * @return Int
+ */
+ public function getLongitude() {
+ return $this->get('geo:long');
+ }
+
+ /**
+ * Return the entity's location
+ *
+ * @return string
+ */
+ public function getLocation() {
+ return $this->get('location');
+ }
+
+ /*
+ * NOTABLE INTERFACE
+ */
+
+ /**
+ * Set the time and duration of an object
+ *
+ * @param int $hour If ommitted, now is assumed.
+ * @param int $minute If ommitted, now is assumed.
+ * @param int $second If ommitted, now is assumed.
+ * @param int $day If ommitted, now is assumed.
+ * @param int $month If ommitted, now is assumed.
+ * @param int $year If ommitted, now is assumed.
+ * @param int $duration Duration of event, remainder of the day is assumed.
+ * @return true
+ * @todo Unimplemented
+ */
+ public function setCalendarTimeAndDuration($hour = NULL, $minute = NULL, $second = NULL, $day = NULL, $month = NULL, $year = NULL, $duration = NULL) {
+ $start = mktime($hour, $minute, $second, $month, $day, $year);
+ $end = $start + abs($duration);
+ if (!$duration) {
+ $end = get_day_end($day,$month,$year);
+ }
+
+ $this->calendar_start = $start;
+ $this->calendar_end = $end;
+
+ return true;
+ }
+
+ /**
+ * Returns the start timestamp.
+ *
+ * @return int
+ * @todo Unimplemented
+ */
+ public function getCalendarStartTime() {
+ return (int)$this->calendar_start;
+ }
+
+ /**
+ * Returns the end timestamp.
+ *
+ * @todo Unimplemented
+ */
+ public function getCalendarEndTime() {
+ return (int)$this->calendar_end;
+ }
+
+ /*
+ * EXPORTABLE INTERFACE
+ */
+
+ /**
+ * Returns an array of fields which can be exported.
+ *
+ * @return array
+ */
+ public function getExportableValues() {
+ return array(
+ 'guid',
+ 'type',
+ 'subtype',
+ 'time_created',
+ 'time_updated',
+ 'container_guid',
+ 'owner_guid',
+ 'site_guid'
+ );
+ }
+
+ /**
+ * Export this class into an array of ODD Elements containing all necessary fields.
+ * Override if you wish to return more information than can be found in $this->attributes (shouldn't happen)
+ *
+ * @return array
+ */
+ public function export() {
+ $tmp = array();
+
+ // Generate uuid
+ $uuid = guid_to_uuid($this->getGUID());
+
+ // Create entity
+ $odd = new ODDEntity(
+ $uuid,
+ $this->attributes['type'],
+ get_subtype_from_id($this->attributes['subtype'])
+ );
+
+ $tmp[] = $odd;
+
+ $exportable_values = $this->getExportableValues();
+
+ // Now add its attributes
+ foreach ($this->attributes as $k => $v) {
+ $meta = NULL;
+
+ if (in_array( $k, $exportable_values)) {
+ switch ($k) {
+ case 'guid' : // Dont use guid in OpenDD
+ case 'type' : // Type and subtype already taken care of
+ case 'subtype' :
+ break;
+
+ case 'time_created' : // Created = published
+ $odd->setAttribute('published', date("r", $v));
+ break;
+
+ case 'site_guid' : // Container
+ $k = 'site_uuid';
+ $v = guid_to_uuid($v);
+ $meta = new ODDMetaData($uuid . "attr/$k/", $uuid, $k, $v);
+ break;
+
+ case 'container_guid' : // Container
+ $k = 'container_uuid';
+ $v = guid_to_uuid($v);
+ $meta = new ODDMetaData($uuid . "attr/$k/", $uuid, $k, $v);
+ break;
+
+ case 'owner_guid' : // Convert owner guid to uuid, this will be stored in metadata
+ $k = 'owner_uuid';
+ $v = guid_to_uuid($v);
+ $meta = new ODDMetaData($uuid . "attr/$k/", $uuid, $k, $v);
+ break;
+
+ default :
+ $meta = new ODDMetaData($uuid . "attr/$k/", $uuid, $k, $v);
+ }
+
+ // set the time of any metadata created
+ if ($meta) {
+ $meta->setAttribute('published', date("r",$this->time_created));
+ $tmp[] = $meta;
+ }
+ }
+ }
+
+ // Now we do something a bit special.
+ /*
+ * This provides a rendered view of the entity to foreign sites.
+ */
+
+ elgg_set_viewtype('default');
+ $view = elgg_view_entity($this, true);
+ elgg_set_viewtype();
+
+ $tmp[] = new ODDMetaData($uuid . "volatile/renderedentity/", $uuid, 'renderedentity', $view , 'volatile');
+
+ return $tmp;
+ }
+
+ /*
+ * IMPORTABLE INTERFACE
+ */
+
+ /**
+ * Import data from an parsed ODD xml data array.
+ *
+ * @param array $data
+ * @param int $version
+ * @return true
+ */
+ public function import(ODD $data) {
+ if (!($data instanceof ODDEntity)) {
+ throw new InvalidParameterException(elgg_echo('InvalidParameterException:UnexpectedODDClass'));
+ }
+
+ // Set type and subtype
+ $this->attributes['type'] = $data->getAttribute('class');
+ $this->attributes['subtype'] = $data->getAttribute('subclass');
+
+ // Set owner
+ $this->attributes['owner_guid'] = get_loggedin_userid(); // Import as belonging to importer.
+
+ // Set time
+ $this->attributes['time_created'] = strtotime($data->getAttribute('published'));
+ $this->attributes['time_updated'] = time();
+
+ return true;
+ }
+
+ /*
+ * SYSTEM LOG INTERFACE
+ */
+
+ /**
+ * Return an identification for the object for storage in the system log.
+ * This id must be an integer.
+ *
+ * @return int
+ */
+ public function getSystemLogID() {
+ return $this->getGUID();
+ }
+
+ /**
+ * Return the class name of the object.
+ */
+ public function getClassName() {
+ return get_class($this);
+ }
+
+ /**
+ * For a given ID, return the object associated with it.
+ * This is used by the river functionality primarily.
+ *
+ * This is useful for checking access permissions etc on objects.
+ * @return guid
+ */
+ public function getObjectFromID($id) {
+ return get_entity($id);
+ }
+
+ /**
+ * Returns the GUID of the owner of this entity.
+ *
+ * @return int Owner guid
+ */
+ public function getObjectOwnerGUID() {
+ return $this->owner_guid;
+ }
+
+ /**
+ * Returns tags for this entity.
+ *
+ * @warning Tags must be registered by {@link elgg_register_tag_metadata_name()}.
+ *
+ * @param array $tag_names Optionally restrict by tag metadata names.
+ * @return array
+ */
+ public function getTags($tag_names = NULL) {
+ global $CONFIG;
+
+ if ($tag_names && !is_array($tag_names)) {
+ $tag_names = array($tag_names);
+ }
+
+ $valid_tags = elgg_get_registered_tag_metadata_names();
+ $entity_tags = array();
+
+ foreach ($valid_tags as $tag_name) {
+ if (is_array($tag_names) && !in_array($tag_name, $tag_names)) {
+ continue;
+ }
+
+ if ($tags = $this->$tag_name) {
+ // if a single tag, metadata returns a string.
+ // if multiple tags, metadata returns an array.
+ if (is_array($tags)) {
+ $entity_tags = array_merge($entity_tags, $tags);
+ } else {
+ $entity_tags[] = $tags;
+ }
+ }
+ }
+
+ return $entity_tags;
+ }
+
+ /*
+ * ITERATOR INTERFACE
+ */
+
+ /*
+ * This lets an entity's attributes be displayed using foreach as a normal array.
+ * Example: http://www.sitepoint.com/print/php5-standard-library
+ */
+ private $valid = FALSE;
+
+ function rewind() {
+ $this->valid = (FALSE !== reset($this->attributes));
+ }
+
+ function current() {
+ return current($this->attributes);
+ }
+
+ function key() {
+ return key($this->attributes);
+ }
+
+ function next() {
+ $this->valid = (FALSE !== next($this->attributes));
+ }
+
+ function valid() {
+ return $this->valid;
+ }
+
+ /*
+ * ARRAY ACCESS INTERFACE
+ */
+
+ /*
+ * This lets an entity's attributes be accessed like an associative array.
+ * Example: http://www.sitepoint.com/print/php5-standard-library
+ */
+ function offsetSet($key, $value) {
+ if ( array_key_exists($key, $this->attributes) ) {
+ $this->attributes[$key] = $value;
+ }
+ }
+
+ function offsetGet($key) {
+ if ( array_key_exists($key, $this->attributes) ) {
+ return $this->attributes[$key];
+ }
+ }
+
+ function offsetUnset($key) {
+ if ( array_key_exists($key, $this->attributes) ) {
+ $this->attributes[$key] = ""; // Full unsetting is dangerious for our objects
+ }
+ }
+
+ function offsetExists($offset) {
+ return array_key_exists($offset, $this->attributes);
+ }
} \ No newline at end of file
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-05 21:37:43 +0000