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-rw-r--r--engine/lib/metadata.php1707
1 files changed, 885 insertions, 822 deletions
diff --git a/engine/lib/metadata.php b/engine/lib/metadata.php
index c6e5db4cd..5ca39b586 100644
--- a/engine/lib/metadata.php
+++ b/engine/lib/metadata.php
@@ -1,912 +1,975 @@
<?php
- /**
- * Elgg metadata
- * Functions to manage object metadata.
- *
- * @package Elgg
- * @subpackage Core
-
- * @author Curverider Ltd <info@elgg.com>
-
- * @link http://elgg.org/
- */
+/**
+ * Elgg metadata
+ * Functions to manage object metadata.
+ *
+ * @package Elgg
+ * @subpackage Core
+ * @author Curverider Ltd <info@elgg.com>
+ * @link http://elgg.org/
+ */
+/**
+ * ElggMetadata
+ * This class describes metadata that can be attached to ElggEntities.
+ *
+ * @author Curverider Ltd <info@elgg.com>
+ * @package Elgg
+ * @subpackage Core
+ */
+class ElggMetadata extends ElggExtender {
/**
- * ElggMetadata
- * This class describes metadata that can be attached to ElggEntities.
- *
- * @author Curverider Ltd <info@elgg.com>
- * @package Elgg
- * @subpackage Core
+ * Construct a new site object, optionally from a given id value or row.
+ *
+ * @param mixed $id
*/
- class ElggMetadata extends ElggExtender
- {
-
- /**
- * Construct a new site object, optionally from a given id value or row.
- *
- * @param mixed $id
- */
- function __construct($id = null)
- {
- $this->attributes = array();
-
- if (!empty($id)) {
-
- if ($id instanceof stdClass)
- $metadata = $id; // Create from db row
- else
- $metadata = get_metadata($id);
-
- if ($metadata) {
- $objarray = (array) $metadata;
- foreach($objarray as $key => $value) {
- $this->attributes[$key] = $value;
- }
- $this->attributes['type'] = "metadata";
- }
- }
- }
-
- /**
- * Class member get overloading
- *
- * @param string $name
- * @return mixed
- */
- function __get($name) {
- return $this->get($name);
- }
-
- /**
- * Class member set overloading
- *
- * @param string $name
- * @param mixed $value
- * @return mixed
- */
- function __set($name, $value) {
- return $this->set($name, $value);
- }
+ function __construct($id = null) {
+ $this->attributes = array();
- /**
- * Determines whether or not the user can edit this piece of metadata
- *
- * @return true|false Depending on permissions
- */
- function canEdit() {
-
- if ($entity = get_entity($this->get('entity_guid'))) {
- return $entity->canEditMetadata($this);
+ if (!empty($id)) {
+ // Create from db row
+ if ($id instanceof stdClass) {
+ $metadata = $id;
+ } else {
+ $metadata = get_metadata($id);
}
- return false;
-
- }
-
- /**
- * Save matadata object
- *
- * @return int the metadata object id
- */
- function save()
- {
- if ($this->id > 0)
- return update_metadata($this->id, $this->name, $this->value, $this->value_type, $this->owner_guid, $this->access_id);
- else
- {
- $this->id = create_metadata($this->entity_guid, $this->name, $this->value, $this->value_type, $this->owner_guid, $this->access_id);
- if (!$this->id) throw new IOException(sprintf(elgg_new('IOException:UnableToSaveNew'), get_class()));
- return $this->id;
+
+ if ($metadata) {
+ $objarray = (array) $metadata;
+ foreach($objarray as $key => $value) {
+ $this->attributes[$key] = $value;
+ }
+ $this->attributes['type'] = "metadata";
}
-
}
-
- /**
- * Delete a given metadata.
- */
- function delete()
- {
- return delete_metadata($this->id);
- }
-
- /**
- * Get a url for this item of metadata.
- *
- * @return string
- */
- public function getURL() { return get_metadata_url($this->id); }
-
- // SYSTEM LOG INTERFACE ////////////////////////////////////////////////////////////
-
- /**
- * For a given ID, return the object associated with it.
- * This is used by the river functionality primarily.
- * This is useful for checking access permissions etc on objects.
- */
- public function getObjectFromID($id) { return get_metadata($id); }
}
/**
- * Convert a database row to a new ElggMetadata
+ * Class member get overloading
*
- * @param stdClass $row
- * @return stdClass or ElggMetadata
+ * @param string $name
+ * @return mixed
*/
- function row_to_elggmetadata($row)
- {
- if (!($row instanceof stdClass))
- return $row;
-
- return new ElggMetadata($row);
+ function __get($name) {
+ return $this->get($name);
}
-
/**
- * Get a specific item of metadata.
- *
- * @param $id int The item of metadata being retrieved.
+ * Class member set overloading
+ *
+ * @param string $name
+ * @param mixed $value
+ * @return mixed
*/
- function get_metadata($id)
- {
- global $CONFIG;
-
- $id = (int)$id;
- $access = get_access_sql_suffix("e");
- $md_access = get_access_sql_suffix("m");
-
- return row_to_elggmetadata(get_data_row("SELECT m.*, n.string as name, v.string as value from {$CONFIG->dbprefix}metadata m JOIN {$CONFIG->dbprefix}entities e on e.guid = m.entity_guid JOIN {$CONFIG->dbprefix}metastrings v on m.value_id = v.id JOIN {$CONFIG->dbprefix}metastrings n on m.name_id = n.id where m.id=$id and $access and $md_access"));
+ function __set($name, $value) {
+ return $this->set($name, $value);
}
-
+
/**
- * Removes metadata on an entity with a particular name, optionally with a given value.
+ * Determines whether or not the user can edit this piece of metadata
*
- * @param int $entity_guid The entity GUID
- * @param string $name The name of the metadata
- * @param string $value The optional value of the item (useful for removing a single item in a multiple set)
- * @return true|false Depending on success
+ * @return true|false Depending on permissions
*/
- function remove_metadata($entity_guid, $name, $value = "") {
-
- global $CONFIG;
- $entity_guid = (int) $entity_guid;
- $name = sanitise_string($name);
- $value = sanitise_string($value);
-
- $query = "SELECT * from {$CONFIG->dbprefix}metadata WHERE entity_guid = $entity_guid and name_id=" . add_metastring($name);
- if ($value!="")
- $query .= " and value_id=" . add_metastring($value);
-
- if ($existing = get_data($query)) {
- foreach($existing as $ex)
- delete_metadata($ex->id);
- return true;
+ function canEdit() {
+ if ($entity = get_entity($this->get('entity_guid'))) {
+ return $entity->canEditMetadata($this);
}
return false;
-
}
-
+
/**
- * Create a new metadata object, or update an existing one.
+ * Save matadata object
*
- * @param int $entity_guid
- * @param string $name
- * @param string $value
- * @param string $value_type
- * @param int $owner_guid
- * @param int $access_id
- * @param bool $allow_multiple
+ * @return int the metadata object id
*/
- function create_metadata($entity_guid, $name, $value, $value_type, $owner_guid, $access_id = ACCESS_PRIVATE, $allow_multiple = false)
- {
- global $CONFIG;
-
- $entity_guid = (int)$entity_guid;
- //$name = sanitise_string(trim($name));
- //$value = sanitise_string(trim($value));
- $value_type = detect_extender_valuetype($value, sanitise_string(trim($value_type)));
- $time = time();
- $owner_guid = (int)$owner_guid;
- $allow_multiple = (boolean)$allow_multiple;
-
- if ($owner_guid==0) $owner_guid = get_loggedin_userid();
-
- $access_id = (int)$access_id;
-
- $id = false;
-
- $existing = get_data_row("SELECT * from {$CONFIG->dbprefix}metadata WHERE entity_guid = $entity_guid and name_id=" . add_metastring($name) . " limit 1");
- if (($existing) && (!$allow_multiple) && (isset($value)))
- {
- $id = $existing->id;
- $result = update_metadata($id, $name, $value, $value_type, $owner_guid, $access_id);
-
- if (!$result) return false;
- }
- else if (isset($value))
- {
- // Support boolean types
- if (is_bool($value)) {
- if ($value)
- $value = 1;
- else
- $value = 0;
- }
-
- // Add the metastrings
- $value = add_metastring($value);
- if (!$value) return false;
-
- $name = add_metastring($name);
- if (!$name) return false;
-
- // If ok then add it
- $id = insert_data("INSERT into {$CONFIG->dbprefix}metadata (entity_guid, name_id, value_id, value_type, owner_guid, time_created, access_id) VALUES ($entity_guid, '$name','$value','$value_type', $owner_guid, $time, $access_id)");
-
- if ($id!==false) {
- $obj = get_metadata($id);
- if (trigger_elgg_event('create', 'metadata', $obj)) {
- return true;
- } else {
- delete_metadata($id);
- }
+ function save() {
+ if ($this->id > 0) {
+ return update_metadata($this->id, $this->name, $this->value, $this->value_type, $this->owner_guid, $this->access_id);
+ } else {
+ $this->id = create_metadata($this->entity_guid, $this->name, $this->value, $this->value_type, $this->owner_guid, $this->access_id);
+ if (!$this->id) {
+ throw new IOException(sprintf(elgg_new('IOException:UnableToSaveNew'), get_class()));
}
-
- } else if ($existing) {
-// TODO: Check... are you sure you meant to do this Ben? :)
- $id = $existing->id;
- delete_metadata($id);
-
+ return $this->id;
}
-
- return $id;
}
-
+
+ /**
+ * Delete a given metadata.
+ */
+ function delete() {
+ return delete_metadata($this->id);
+ }
+
/**
- * Update an item of metadata.
+ * Get a url for this item of metadata.
*
- * @param int $id
- * @param string $name
- * @param string $value
- * @param string $value_type
- * @param int $owner_guid
- * @param int $access_id
+ * @return string
*/
- function update_metadata($id, $name, $value, $value_type, $owner_guid, $access_id)
- {
- global $CONFIG;
+ public function getURL() {
+ return get_metadata_url($this->id);
+ }
- $id = (int)$id;
+ // SYSTEM LOG INTERFACE ////////////////////////////////////////////////////////////
- if (!$md = get_metadata($id)) return false;
- if (!$md->canEdit()) return false;
+ /**
+ * For a given ID, return the object associated with it.
+ * This is used by the river functionality primarily.
+ * This is useful for checking access permissions etc on objects.
+ */
+ public function getObjectFromID($id) {
+ return get_metadata($id);
+ }
+}
- // If memcached then we invalidate the cache for this entry
- static $metabyname_memcache;
- if ((!$metabyname_memcache) && (is_memcache_available()))
- $metabyname_memcache = new ElggMemcache('metabyname_memcache');
- if ($metabyname_memcache) $metabyname_memcache->delete("{$md->entity_guid}:{$md->name_id}");
-
- //$name = sanitise_string(trim($name));
- //$value = sanitise_string(trim($value));
- $value_type = detect_extender_valuetype($value, sanitise_string(trim($value_type)));
-
- $owner_guid = (int)$owner_guid;
- if ($owner_guid==0) $owner_guid = get_loggedin_userid();
-
- $access_id = (int)$access_id;
-
- $access = get_access_sql_suffix();
-
- // Support boolean types (as integers)
+/**
+ * Convert a database row to a new ElggMetadata
+ *
+ * @param stdClass $row
+ * @return stdClass or ElggMetadata
+ */
+function row_to_elggmetadata($row) {
+ if (!($row instanceof stdClass)) {
+ return $row;
+ }
+
+ return new ElggMetadata($row);
+}
+
+/**
+ * Get a specific item of metadata.
+ *
+ * @param $id int The item of metadata being retrieved.
+ */
+function get_metadata($id) {
+ global $CONFIG;
+
+ $id = (int)$id;
+ $access = get_access_sql_suffix("e");
+ $md_access = get_access_sql_suffix("m");
+
+ return row_to_elggmetadata(get_data_row("SELECT m.*, n.string as name, v.string as value from {$CONFIG->dbprefix}metadata m JOIN {$CONFIG->dbprefix}entities e on e.guid = m.entity_guid JOIN {$CONFIG->dbprefix}metastrings v on m.value_id = v.id JOIN {$CONFIG->dbprefix}metastrings n on m.name_id = n.id where m.id=$id and $access and $md_access"));
+}
+
+/**
+ * Removes metadata on an entity with a particular name, optionally with a given value.
+ *
+ * @param int $entity_guid The entity GUID
+ * @param string $name The name of the metadata
+ * @param string $value The optional value of the item (useful for removing a single item in a multiple set)
+ * @return true|false Depending on success
+ */
+function remove_metadata($entity_guid, $name, $value = "") {
+ global $CONFIG;
+ $entity_guid = (int) $entity_guid;
+ $name = sanitise_string($name);
+ $value = sanitise_string($value);
+
+ $query = "SELECT * from {$CONFIG->dbprefix}metadata WHERE entity_guid = $entity_guid and name_id=" . add_metastring($name);
+ if ($value!="") {
+ $query .= " and value_id=" . add_metastring($value);
+ }
+
+ if ($existing = get_data($query)) {
+ foreach($existing as $ex) {
+ delete_metadata($ex->id);
+ }
+ return true;
+ }
+
+ return false;
+}
+
+/**
+ * Create a new metadata object, or update an existing one.
+ *
+ * @param int $entity_guid
+ * @param string $name
+ * @param string $value
+ * @param string $value_type
+ * @param int $owner_guid
+ * @param int $access_id
+ * @param bool $allow_multiple
+ */
+function create_metadata($entity_guid, $name, $value, $value_type, $owner_guid, $access_id = ACCESS_PRIVATE, $allow_multiple = false) {
+ global $CONFIG;
+
+ $entity_guid = (int)$entity_guid;
+ //$name = sanitise_string(trim($name));
+ //$value = sanitise_string(trim($value));
+ $value_type = detect_extender_valuetype($value, sanitise_string(trim($value_type)));
+ $time = time();
+ $owner_guid = (int)$owner_guid;
+ $allow_multiple = (boolean)$allow_multiple;
+
+ if ($owner_guid==0) {
+ $owner_guid = get_loggedin_userid();
+ }
+
+ $access_id = (int)$access_id;
+
+ $id = false;
+
+ $existing = get_data_row("SELECT * from {$CONFIG->dbprefix}metadata WHERE entity_guid = $entity_guid and name_id=" . add_metastring($name) . " limit 1");
+ if (($existing) && (!$allow_multiple) && (isset($value))) {
+ $id = $existing->id;
+ $result = update_metadata($id, $name, $value, $value_type, $owner_guid, $access_id);
+
+ if (!$result) {
+ return false;
+ }
+ }
+ else if (isset($value)) {
+ // Support boolean types
if (is_bool($value)) {
- if ($value)
+ if ($value) {
$value = 1;
- else
+ } else {
$value = 0;
+ }
}
-
- // Add the metastring
+
+ // Add the metastrings
$value = add_metastring($value);
- if (!$value) return false;
-
+ if (!$value) {
+ return false;
+ }
+
$name = add_metastring($name);
- if (!$name) return false;
+ if (!$name) {
+ return false;
+ }
+
+ // If ok then add it
+ $id = insert_data("INSERT into {$CONFIG->dbprefix}metadata (entity_guid, name_id, value_id, value_type, owner_guid, time_created, access_id) VALUES ($entity_guid, '$name','$value','$value_type', $owner_guid, $time, $access_id)");
- // If ok then add it
- $result = update_data("UPDATE {$CONFIG->dbprefix}metadata set value_id='$value', value_type='$value_type', access_id=$access_id, owner_guid=$owner_guid where id=$id and name_id='$name'");
- if ($result!==false) {
+ if ($id!==false) {
$obj = get_metadata($id);
- if (trigger_elgg_event('update', 'metadata', $obj)) {
+ if (trigger_elgg_event('create', 'metadata', $obj)) {
return true;
} else {
delete_metadata($id);
}
}
-
- return $result;
+
+ } else if ($existing) {
+ // TODO: Check... are you sure you meant to do this Ben? :)
+ $id = $existing->id;
+ delete_metadata($id);
}
-
- /**
- * This function creates metadata from an associative array of "key => value" pairs.
- *
- * @param int $entity_guid
- * @param string $name_and_values
- * @param string $value_type
- * @param int $owner_guid
- * @param int $access_id
- * @param bool $allow_multiple
- */
- function create_metadata_from_array($entity_guid, array $name_and_values, $value_type, $owner_guid, $access_id = ACCESS_PRIVATE, $allow_multiple = false)
- {
- foreach ($name_and_values as $k => $v)
- if (!create_metadata($entity_guid, $k, $v, $value_type, $owner_guid, $access_id, $allow_multiple)) return false;
-
- return true;
+
+ return $id;
+}
+
+/**
+ * Update an item of metadata.
+ *
+ * @param int $id
+ * @param string $name
+ * @param string $value
+ * @param string $value_type
+ * @param int $owner_guid
+ * @param int $access_id
+ */
+function update_metadata($id, $name, $value, $value_type, $owner_guid, $access_id) {
+ global $CONFIG;
+
+ $id = (int)$id;
+
+ if (!$md = get_metadata($id)) {
+ return false;
}
-
- /**
- * Delete an item of metadata, where the current user has access.
- *
- * @param $id int The item of metadata to delete.
- */
- function delete_metadata($id)
- {
- global $CONFIG;
-
- $id = (int)$id;
- $metadata = get_metadata($id);
-
- if ($metadata) {
- // Tidy up if memcache is enabled.
- static $metabyname_memcache;
- if ((!$metabyname_memcache) && (is_memcache_available()))
- $metabyname_memcache = new ElggMemcache('metabyname_memcache');
- if ($metabyname_memcache) $metabyname_memcache->delete("{$metadata->entity_guid}:{$metadata->name_id}");
-
- if (($metadata->canEdit()) && (trigger_elgg_event('delete', 'metadata', $metadata)))
- return delete_data("DELETE from {$CONFIG->dbprefix}metadata where id=$id");
- }
-
+ if (!$md->canEdit()) {
return false;
}
-
- /**
- * Return the metadata values that match your query.
- *
- * @param string $meta_name
- * @return mixed either a value, an array of ElggMetadata or false.
- */
- function get_metadata_byname($entity_guid, $meta_name)
- {
- global $CONFIG;
-
- $meta_name = get_metastring_id($meta_name);
-
- if (empty($meta_name)) return false;
-
- $entity_guid = (int)$entity_guid;
- $access = get_access_sql_suffix("e");
- $md_access = get_access_sql_suffix("m");
-
- // If memcache is available then cache this (cache only by name for now since this is the most common query)
- $meta = null;
- static $metabyname_memcache;
- if ((!$metabyname_memcache) && (is_memcache_available()))
- $metabyname_memcache = new ElggMemcache('metabyname_memcache');
- if ($metabyname_memcache) $meta = $metabyname_memcache->load("{$entity_guid}:{$meta_name}");
- if ($meta) return $meta;
- $result = get_data("SELECT m.*, n.string as name, v.string as value from {$CONFIG->dbprefix}metadata m JOIN {$CONFIG->dbprefix}entities e ON e.guid = m.entity_guid JOIN {$CONFIG->dbprefix}metastrings v on m.value_id = v.id JOIN {$CONFIG->dbprefix}metastrings n on m.name_id = n.id where m.entity_guid=$entity_guid and m.name_id='$meta_name' and $access and $md_access", "row_to_elggmetadata");
- if (!$result)
- return false;
-
- // Cache if memcache available
- if ($metabyname_memcache)
- {
- if (count($result) == 1) $r = $result[0]; else $r = $result;
- $metabyname_memcache->setDefaultExpiry(3600); // This is a bit of a hack - we shorten the expiry on object metadata so that it'll be gone in an hour. This means that deletions and more importantly updates will filter through eventually.
- $metabyname_memcache->save("{$entity_guid}:{$meta_name}", $r);
-
- }
- if (count($result) == 1)
- return $result[0];
-
- return $result;
+ // If memcached then we invalidate the cache for this entry
+ static $metabyname_memcache;
+ if ((!$metabyname_memcache) && (is_memcache_available())) {
+ $metabyname_memcache = new ElggMemcache('metabyname_memcache');
}
-
- /**
- * Return all the metadata for a given GUID.
- *
- * @param int $entity_guid
- */
- function get_metadata_for_entity($entity_guid)
- {
- global $CONFIG;
-
- $entity_guid = (int)$entity_guid;
- $access = get_access_sql_suffix("e");
- $md_access = get_access_sql_suffix("m");
-
- return get_data("SELECT m.*, n.string as name, v.string as value from {$CONFIG->dbprefix}metadata m JOIN {$CONFIG->dbprefix}entities e ON e.guid = m.entity_guid JOIN {$CONFIG->dbprefix}metastrings v on m.value_id = v.id JOIN {$CONFIG->dbprefix}metastrings n on m.name_id = n.id where m.entity_guid=$entity_guid and $access and $md_access", "row_to_elggmetadata");
+
+ if ($metabyname_memcache) {
+ $metabyname_memcache->delete("{$md->entity_guid}:{$md->name_id}");
}
- /**
- * Get the metadata where the entities they are referring to match a given criteria.
- *
- * @param mixed $meta_name
- * @param mixed $meta_value
- * @param string $entity_type The type of entity to look for, eg 'site' or 'object'
- * @param string $entity_subtype The subtype of the entity.
- * @param int $limit
- * @param int $offset
- * @param string $order_by Optional ordering.
- * @param int $site_guid The site to get entities for. Leave as 0 (default) for the current site; -1 for all sites.
- */
- function find_metadata($meta_name = "", $meta_value = "", $entity_type = "", $entity_subtype = "", $limit = 10, $offset = 0, $order_by = "", $site_guid = 0)
- {
- global $CONFIG;
-
- $meta_n = get_metastring_id($meta_name);
- $meta_v = get_metastring_id($meta_value);
-
- $entity_type = sanitise_string($entity_type);
- $entity_subtype = get_subtype_id($entity_type, $entity_subtype);
- $limit = (int)$limit;
- $offset = (int)$offset;
- if ($order_by == "") $order_by = "e.time_created desc";
- $order_by = sanitise_string($order_by);
- $site_guid = (int) $site_guid;
- if ($site_guid == 0)
- $site_guid = $CONFIG->site_guid;
-
-
- $where = array();
-
- if ($entity_type!="")
- $where[] = "e.type='$entity_type'";
- if ($entity_subtype)
- $where[] = "e.subtype=$entity_subtype";
- if ($meta_name!="") {
- if (!$meta_v) return false; // The value is set, but we didn't get a value... so something went wrong.
- $where[] = "m.name_id='$meta_n'";
- }
- if ($meta_value!="") {
- if (!$meta_v) return false; // The value is set, but we didn't get a value... so something went wrong.
- $where[] = "m.value_id='$meta_v'";
- }
- if ($site_guid > 0)
- $where[] = "e.site_guid = {$site_guid}";
-
- $query = "SELECT m.*, n.string as name, v.string as value from {$CONFIG->dbprefix}entities e JOIN {$CONFIG->dbprefix}metadata m on e.guid = m.entity_guid JOIN {$CONFIG->dbprefix}metastrings v on m.value_id = v.id JOIN {$CONFIG->dbprefix}metastrings n on m.name_id = n.id where";
- foreach ($where as $w)
- $query .= " $w and ";
- $query .= get_access_sql_suffix("e"); // Add access controls
- $query .= ' and ' . get_access_sql_suffix("m"); // Add access controls
- $query .= " order by $order_by limit $offset, $limit"; // Add order and limit
+ //$name = sanitise_string(trim($name));
+ //$value = sanitise_string(trim($value));
+ $value_type = detect_extender_valuetype($value, sanitise_string(trim($value_type)));
- return get_data($query, "row_to_elggmetadata");
+ $owner_guid = (int)$owner_guid;
+ if ($owner_guid==0) {
+ $owner_guid = get_loggedin_userid();
}
-
- /**
- * Return a list of entities based on the given search criteria.
- *
- * @param mixed $meta_name
- * @param mixed $meta_value
- * @param string $entity_type The type of entity to look for, eg 'site' or 'object'
- * @param string $entity_subtype The subtype of the entity.
- * @param int $limit
- * @param int $offset
- * @param string $order_by Optional ordering.
- * @param int $site_guid The site to get entities for. Leave as 0 (default) for the current site; -1 for all sites.
- * @param true|false $count If set to true, returns the total number of entities rather than a list. (Default: false)
- *
- * @return int|array A list of entities, or a count if $count is set to true
- */
- function get_entities_from_metadata($meta_name, $meta_value = "", $entity_type = "", $entity_subtype = "", $owner_guid = 0, $limit = 10, $offset = 0, $order_by = "", $site_guid = 0, $count = false)
- {
- global $CONFIG;
-
- $meta_n = get_metastring_id($meta_name);
- $meta_v = get_metastring_id($meta_value);
-
- $entity_type = sanitise_string($entity_type);
- $entity_subtype = get_subtype_id($entity_type, $entity_subtype);
- $limit = (int)$limit;
- $offset = (int)$offset;
- if ($order_by == "")
- $order_by = "e.time_created desc";
- else
- $order_by = "e.time_created, {$order_by}";
- $order_by = sanitise_string($order_by);
- $site_guid = (int) $site_guid;
- if ((is_array($owner_guid) && (count($owner_guid)))) {
- foreach($owner_guid as $key => $guid) {
- $owner_guid[$key] = (int) $guid;
- }
- } else {
- $owner_guid = (int) $owner_guid;
- }
- if ($site_guid == 0)
- $site_guid = $CONFIG->site_guid;
-
- //$access = get_access_list();
-
- $where = array();
-
- if ($entity_type!=="")
- $where[] = "e.type='$entity_type'";
- if ($entity_subtype)
- $where[] = "e.subtype=$entity_subtype";
- if ($meta_name!=="")
- $where[] = "m.name_id='$meta_n'";
- if ($meta_value!=="")
- $where[] = "m.value_id='$meta_v'";
- if ($site_guid > 0)
- $where[] = "e.site_guid = {$site_guid}";
- if (is_array($owner_guid)) {
- $where[] = "e.container_guid in (".implode(",",$owner_guid).")";
- } else if ($owner_guid > 0)
- $where[] = "e.container_guid = {$owner_guid}";
-
- if (!$count) {
- $query = "SELECT distinct e.* ";
- } else {
- $query = "SELECT count(distinct e.guid) as total ";
- }
-
- $query .= "from {$CONFIG->dbprefix}entities e JOIN {$CONFIG->dbprefix}metadata m on e.guid = m.entity_guid where";
- foreach ($where as $w)
- $query .= " $w and ";
- $query .= get_access_sql_suffix("e"); // Add access controls
- $query .= ' and ' . get_access_sql_suffix("m"); // Add access controls
-
- if (!$count) {
- $query .= " order by $order_by limit $offset, $limit"; // Add order and limit
- return get_data($query, "entity_row_to_elggstar");
+
+ $access_id = (int)$access_id;
+
+ $access = get_access_sql_suffix();
+
+ // Support boolean types (as integers)
+ if (is_bool($value)) {
+ if ($value) {
+ $value = 1;
} else {
- if ($row = get_data_row($query))
- return $row->total;
+ $value = 0;
}
+ }
+
+ // Add the metastring
+ $value = add_metastring($value);
+ if (!$value) {
return false;
}
-
- /**
- * Return a list of entities suitable for display based on the given search criteria.
- *
- * @see elgg_view_entity_list
- *
- * @param mixed $meta_name Metadata name to search on
- * @param mixed $meta_value The value to match, optionally
- * @param string $entity_type The type of entity to look for, eg 'site' or 'object'
- * @param string $entity_subtype The subtype of the entity
- * @param int $limit Number of entities to display per page
- * @param true|false $fullview Whether or not to display the full view (default: true)
- * @param true|false $viewtypetoggle Whether or not to allow users to toggle to the gallery view. Default: true
- * @param true|false $pagination Display pagination? Default: true
- *
- * @return string A list of entities suitable for display
- */
- function list_entities_from_metadata($meta_name, $meta_value = "", $entity_type = "", $entity_subtype = "", $owner_guid = 0, $limit = 10, $fullview = true, $viewtypetoggle = true, $pagination = true) {
-
- $offset = (int) get_input('offset');
- $limit = (int) $limit;
- $count = get_entities_from_metadata($meta_name, $meta_value, $entity_type, $entity_subtype, $owner_guid, $limit, $offset, "", 0, true);
- $entities = get_entities_from_metadata($meta_name, $meta_value, $entity_type, $entity_subtype, $owner_guid, $limit, $offset, "", 0, false);
-
- return elgg_view_entity_list($entities, $count, $offset, $limit, $fullview, $viewtypetoggle, $pagination);
-
+
+ $name = add_metastring($name);
+ if (!$name) {
+ return false;
}
- /**
- * Returns a list of entities based on the given search criteria.
- *
- * @param array $meta_array Array of 'name' => 'value' pairs
- * @param string $entity_type The type of entity to look for, eg 'site' or 'object'
- * @param string $entity_subtype The subtype of the entity.
- * @param int $limit
- * @param int $offset
- * @param string $order_by Optional ordering.
- * @param int $site_guid The site to get entities for. Leave as 0 (default) for the current site; -1 for all sites.
- * @param true|false $count If set to true, returns the total number of entities rather than a list. (Default: false)
- * @param string $meta_array_operator Operator used for joining the metadata array together
- * @return int|array List of ElggEntities, or the total number if count is set to false
- */
- function get_entities_from_metadata_multi($meta_array, $entity_type = "", $entity_subtype = "", $owner_guid = 0, $limit = 10, $offset = 0, $order_by = "", $site_guid = 0, $count = false, $meta_array_operator = 'and')
- {
- global $CONFIG;
-
- if (!is_array($meta_array) || sizeof($meta_array) == 0) {
+ // If ok then add it
+ $result = update_data("UPDATE {$CONFIG->dbprefix}metadata set value_id='$value', value_type='$value_type', access_id=$access_id, owner_guid=$owner_guid where id=$id and name_id='$name'");
+ if ($result!==false) {
+ $obj = get_metadata($id);
+ if (trigger_elgg_event('update', 'metadata', $obj)) {
+ return true;
+ } else {
+ delete_metadata($id);
+ }
+ }
+
+ return $result;
+}
+
+/**
+ * This function creates metadata from an associative array of "key => value" pairs.
+ *
+ * @param int $entity_guid
+ * @param string $name_and_values
+ * @param string $value_type
+ * @param int $owner_guid
+ * @param int $access_id
+ * @param bool $allow_multiple
+ */
+function create_metadata_from_array($entity_guid, array $name_and_values, $value_type, $owner_guid, $access_id = ACCESS_PRIVATE, $allow_multiple = false) {
+ foreach ($name_and_values as $k => $v) {
+ if (!create_metadata($entity_guid, $k, $v, $value_type, $owner_guid, $access_id, $allow_multiple)) {
return false;
}
-
- $where = array();
-
- $mindex = 1;
- $join = "";
- $metawhere = array();
- $meta_array_operator = sanitise_string($meta_array_operator);
- foreach($meta_array as $meta_name => $meta_value) {
- $meta_n = get_metastring_id($meta_name);
- $meta_v = get_metastring_id($meta_value);
- $join .= " JOIN {$CONFIG->dbprefix}metadata m{$mindex} on e.guid = m{$mindex}.entity_guid ";
- /*if ($meta_name!=="")
- $where[] = "m{$mindex}.name_id='$meta_n'";
- if ($meta_value!=="")
- $where[] = "m{$mindex}.value_id='$meta_v'";*/
- $metawhere[] = "(m{$mindex}.name_id='$meta_n' AND m{$mindex}.value_id='$meta_v')";
- $mindex++;
+ }
+ return true;
+}
+
+/**
+ * Delete an item of metadata, where the current user has access.
+ *
+ * @param $id int The item of metadata to delete.
+ */
+function delete_metadata($id) {
+ global $CONFIG;
+
+ $id = (int)$id;
+ $metadata = get_metadata($id);
+
+ if ($metadata) {
+ // Tidy up if memcache is enabled.
+ static $metabyname_memcache;
+ if ((!$metabyname_memcache) && (is_memcache_available())) {
+ $metabyname_memcache = new ElggMemcache('metabyname_memcache');
}
- $where[] = "(".implode($meta_array_operator, $metawhere).")";
-
- $entity_type = sanitise_string($entity_type);
- $entity_subtype = get_subtype_id($entity_type, $entity_subtype);
- $limit = (int)$limit;
- $offset = (int)$offset;
- if ($order_by == "") $order_by = "e.time_created desc";
- $order_by = sanitise_string($order_by);
- if ((is_array($owner_guid) && (count($owner_guid)))) {
- foreach($owner_guid as $key => $guid) {
- $owner_guid[$key] = (int) $guid;
- }
- } else {
- $owner_guid = (int) $owner_guid;
+
+ if ($metabyname_memcache) {
+ $metabyname_memcache->delete("{$metadata->entity_guid}:{$metadata->name_id}");
}
-
- $site_guid = (int) $site_guid;
- if ($site_guid == 0)
- $site_guid = $CONFIG->site_guid;
-
- //$access = get_access_list();
-
- if ($entity_type!="")
- $where[] = "e.type = '{$entity_type}'";
- if ($entity_subtype)
- $where[] = "e.subtype = {$entity_subtype}";
- if ($site_guid > 0)
- $where[] = "e.site_guid = {$site_guid}";
- if (is_array($owner_guid)) {
- $where[] = "e.container_guid in (".implode(",",$owner_guid).")";
- } else if ($owner_guid > 0)
- $where[] = "e.container_guid = {$owner_guid}";
- //if ($owner_guid > 0)
- // $where[] = "e.container_guid = {$owner_guid}";
-
- if ($count) {
- $query = "SELECT count(distinct e.guid) as total ";
+
+ if (($metadata->canEdit()) && (trigger_elgg_event('delete', 'metadata', $metadata))) {
+ return delete_data("DELETE from {$CONFIG->dbprefix}metadata where id=$id");
+ }
+ }
+
+ return false;
+}
+
+/**
+ * Return the metadata values that match your query.
+ *
+ * @param string $meta_name
+ * @return mixed either a value, an array of ElggMetadata or false.
+ */
+function get_metadata_byname($entity_guid, $meta_name) {
+ global $CONFIG;
+
+ $meta_name = get_metastring_id($meta_name);
+
+ if (empty($meta_name)) {
+ return false;
+ }
+
+ $entity_guid = (int)$entity_guid;
+ $access = get_access_sql_suffix("e");
+ $md_access = get_access_sql_suffix("m");
+
+ // If memcache is available then cache this (cache only by name for now since this is the most common query)
+ $meta = null;
+ static $metabyname_memcache;
+ if ((!$metabyname_memcache) && (is_memcache_available())) {
+ $metabyname_memcache = new ElggMemcache('metabyname_memcache');
+ }
+ if ($metabyname_memcache) {
+ $meta = $metabyname_memcache->load("{$entity_guid}:{$meta_name}");
+ }
+ if ($meta) {
+ return $meta;
+ }
+
+ $result = get_data("SELECT m.*, n.string as name, v.string as value from {$CONFIG->dbprefix}metadata m JOIN {$CONFIG->dbprefix}entities e ON e.guid = m.entity_guid JOIN {$CONFIG->dbprefix}metastrings v on m.value_id = v.id JOIN {$CONFIG->dbprefix}metastrings n on m.name_id = n.id where m.entity_guid=$entity_guid and m.name_id='$meta_name' and $access and $md_access", "row_to_elggmetadata");
+ if (!$result) {
+ return false;
+ }
+
+ // Cache if memcache available
+ if ($metabyname_memcache) {
+ if (count($result) == 1) {
+ $r = $result[0];
} else {
- $query = "SELECT distinct e.* ";
+ $r = $result;
}
-
- $query .= " from {$CONFIG->dbprefix}entities e {$join} where";
- foreach ($where as $w)
- $query .= " $w and ";
- $query .= get_access_sql_suffix("e"); // Add access controls
-
- $mindex = 1;
- foreach($meta_array as $meta_name => $meta_value) {
- $query .= ' and ' . get_access_sql_suffix("m{$mindex}"); // Add access controls
- $mindex++;
+ // This is a bit of a hack - we shorten the expiry on object
+ // metadata so that it'll be gone in an hour. This means that
+ // deletions and more importantly updates will filter through eventually.
+ $metabyname_memcache->setDefaultExpiry(3600);
+ $metabyname_memcache->save("{$entity_guid}:{$meta_name}", $r);
+ }
+ if (count($result) == 1) {
+ return $result[0];
+ }
+
+ return $result;
+}
+
+/**
+ * Return all the metadata for a given GUID.
+ *
+ * @param int $entity_guid
+ */
+function get_metadata_for_entity($entity_guid) {
+ global $CONFIG;
+
+ $entity_guid = (int)$entity_guid;
+ $access = get_access_sql_suffix("e");
+ $md_access = get_access_sql_suffix("m");
+
+ return get_data("SELECT m.*, n.string as name, v.string as value from {$CONFIG->dbprefix}metadata m JOIN {$CONFIG->dbprefix}entities e ON e.guid = m.entity_guid JOIN {$CONFIG->dbprefix}metastrings v on m.value_id = v.id JOIN {$CONFIG->dbprefix}metastrings n on m.name_id = n.id where m.entity_guid=$entity_guid and $access and $md_access", "row_to_elggmetadata");
+}
+
+/**
+ * Get the metadata where the entities they are referring to match a given criteria.
+ *
+ * @param mixed $meta_name
+ * @param mixed $meta_value
+ * @param string $entity_type The type of entity to look for, eg 'site' or 'object'
+ * @param string $entity_subtype The subtype of the entity.
+ * @param int $limit
+ * @param int $offset
+ * @param string $order_by Optional ordering.
+ * @param int $site_guid The site to get entities for. Leave as 0 (default) for the current site; -1 for all sites.
+ */
+function find_metadata($meta_name = "", $meta_value = "", $entity_type = "", $entity_subtype = "", $limit = 10, $offset = 0, $order_by = "", $site_guid = 0) {
+ global $CONFIG;
+
+ $meta_n = get_metastring_id($meta_name);
+ $meta_v = get_metastring_id($meta_value);
+
+ $entity_type = sanitise_string($entity_type);
+ $entity_subtype = get_subtype_id($entity_type, $entity_subtype);
+ $limit = (int)$limit;
+ $offset = (int)$offset;
+ if ($order_by == "") {
+ $order_by = "e.time_created desc";
+ }
+
+ $order_by = sanitise_string($order_by);
+ $site_guid = (int) $site_guid;
+ if ($site_guid == 0) {
+ $site_guid = $CONFIG->site_guid;
+ }
+
+ $where = array();
+
+ if ($entity_type!="") {
+ $where[] = "e.type='$entity_type'";
+ }
+
+ if ($entity_subtype) {
+ $where[] = "e.subtype=$entity_subtype";
+ }
+
+ if ($meta_name!="") {
+ if (!$meta_v) {
+ // The value is set, but we didn't get a value... so something went wrong.
+ return false;
}
-
- if (!$count) {
- $query .= " order by $order_by limit $offset, $limit"; // Add order and limit
- return get_data($query, "entity_row_to_elggstar");
- } else {
- if ($count = get_data_row($query)) {
- return $count->total;
- }
+ $where[] = "m.name_id='$meta_n'";
+ }
+ if ($meta_value!="") {
+ // The value is set, but we didn't get a value... so something went wrong.
+ if (!$meta_v) {
+ return false;
}
- return false;
+ $where[] = "m.value_id='$meta_v'";
}
-
- /**
- * Returns a viewable list of entities based on the given search criteria.
- *
- * @see elgg_view_entity_list
- *
- * @param array $meta_array Array of 'name' => 'value' pairs
- * @param string $entity_type The type of entity to look for, eg 'site' or 'object'
- * @param string $entity_subtype The subtype of the entity.
- * @param int $limit
- * @param int $offset
- * @param string $order_by Optional ordering.
- * @param true|false $fullview Whether or not to display the full view (default: true)
- * @param true|false $viewtypetoggle Whether or not to allow users to toggle to the gallery view. Default: true
- * @param true|false $pagination Display pagination? Default: true
- * @return string List of ElggEntities suitable for display
- */
- function list_entities_from_metadata_multi($meta_array, $entity_type = "", $entity_subtype = "", $owner_guid = 0, $limit = 10, $fullview = true, $viewtypetoggle = true, $pagination = true) {
-
- $offset = (int) get_input('offset');
- $limit = (int) $limit;
- $count = get_entities_from_metadata_multi($meta_array, $entity_type, $entity_subtype, $owner_guid, $limit, $offset, "", $site_guid, true);
- $entities = get_entities_from_metadata_multi($meta_array, $entity_type, $entity_subtype, $owner_guid, $limit, $offset, "", $site_guid, false);
-
- return elgg_view_entity_list($entities, $count, $offset, $limit, $fullview, $viewtypetoggle, $pagination);
-
- }
-
- /**
- * Clear all the metadata for a given entity, assuming you have access to that metadata.
- *
- * @param int $guid
- */
- function clear_metadata($entity_guid)
- {
- global $CONFIG;
-
- $entity_guid = (int)$entity_guid;
- if ($entity = get_entity($entity_guid)) {
- if ($entity->canEdit())
- return delete_data("DELETE from {$CONFIG->dbprefix}metadata where entity_guid={$entity_guid}");
+ if ($site_guid > 0) {
+ $where[] = "e.site_guid = {$site_guid}";
+ }
+
+ $query = "SELECT m.*, n.string as name, v.string as value from {$CONFIG->dbprefix}entities e JOIN {$CONFIG->dbprefix}metadata m on e.guid = m.entity_guid JOIN {$CONFIG->dbprefix}metastrings v on m.value_id = v.id JOIN {$CONFIG->dbprefix}metastrings n on m.name_id = n.id where";
+ foreach ($where as $w) {
+ $query .= " $w and ";
+ }
+ $query .= get_access_sql_suffix("e"); // Add access controls
+ $query .= ' and ' . get_access_sql_suffix("m"); // Add access controls
+ $query .= " order by $order_by limit $offset, $limit"; // Add order and limit
+
+ return get_data($query, "row_to_elggmetadata");
+}
+
+/**
+ * Return a list of entities based on the given search criteria.
+ *
+ * @param mixed $meta_name
+ * @param mixed $meta_value
+ * @param string $entity_type The type of entity to look for, eg 'site' or 'object'
+ * @param string $entity_subtype The subtype of the entity.
+ * @param int $limit
+ * @param int $offset
+ * @param string $order_by Optional ordering.
+ * @param int $site_guid The site to get entities for. Leave as 0 (default) for the current site; -1 for all sites.
+ * @param true|false $count If set to true, returns the total number of entities rather than a list. (Default: false)
+ *
+ * @return int|array A list of entities, or a count if $count is set to true
+ */
+function get_entities_from_metadata($meta_name, $meta_value = "", $entity_type = "", $entity_subtype = "", $owner_guid = 0, $limit = 10, $offset = 0, $order_by = "", $site_guid = 0, $count = false) {
+ global $CONFIG;
+
+ $meta_n = get_metastring_id($meta_name);
+ $meta_v = get_metastring_id($meta_value);
+
+ $entity_type = sanitise_string($entity_type);
+ $entity_subtype = get_subtype_id($entity_type, $entity_subtype);
+ $limit = (int)$limit;
+ $offset = (int)$offset;
+ if ($order_by == "") {
+ $order_by = "e.time_created desc";
+ } else {
+ $order_by = "e.time_created, {$order_by}";
+ }
+ $order_by = sanitise_string($order_by);
+ $site_guid = (int) $site_guid;
+ if ((is_array($owner_guid) && (count($owner_guid)))) {
+ foreach($owner_guid as $key => $guid) {
+ $owner_guid[$key] = (int) $guid;
}
+ } else {
+ $owner_guid = (int) $owner_guid;
+ }
+ if ($site_guid == 0) {
+ $site_guid = $CONFIG->site_guid;
+ }
+
+ //$access = get_access_list();
+
+ $where = array();
+
+ if ($entity_type!=="") {
+ $where[] = "e.type='$entity_type'";
+ }
+
+ if ($entity_subtype) {
+ $where[] = "e.subtype=$entity_subtype";
+ }
+ if ($meta_name!=="") {
+ $where[] = "m.name_id='$meta_n'";
+ }
+ if ($meta_value!=="") {
+ $where[] = "m.value_id='$meta_v'";
+ }
+ if ($site_guid > 0) {
+ $where[] = "e.site_guid = {$site_guid}";
+ }
+ if (is_array($owner_guid)) {
+ $where[] = "e.container_guid in (".implode(",",$owner_guid).")";
+ } else if ($owner_guid > 0) {
+ $where[] = "e.container_guid = {$owner_guid}";
+ }
+
+ if (!$count) {
+ $query = "SELECT distinct e.* ";
+ } else {
+ $query = "SELECT count(distinct e.guid) as total ";
+ }
+
+ $query .= "from {$CONFIG->dbprefix}entities e JOIN {$CONFIG->dbprefix}metadata m on e.guid = m.entity_guid where";
+ foreach ($where as $w) {
+ $query .= " $w and ";
+ }
+ $query .= get_access_sql_suffix("e"); // Add access controls
+ $query .= ' and ' . get_access_sql_suffix("m"); // Add access controls
+
+ if (!$count) {
+ $query .= " order by $order_by limit $offset, $limit"; // Add order and limit
+ return get_data($query, "entity_row_to_elggstar");
+ } else {
+ if ($row = get_data_row($query)) {
+ return $row->total;
+ }
+ }
+ return false;
+}
+
+/**
+ * Return a list of entities suitable for display based on the given search criteria.
+ *
+ * @see elgg_view_entity_list
+ *
+ * @param mixed $meta_name Metadata name to search on
+ * @param mixed $meta_value The value to match, optionally
+ * @param string $entity_type The type of entity to look for, eg 'site' or 'object'
+ * @param string $entity_subtype The subtype of the entity
+ * @param int $limit Number of entities to display per page
+ * @param true|false $fullview Whether or not to display the full view (default: true)
+ * @param true|false $viewtypetoggle Whether or not to allow users to toggle to the gallery view. Default: true
+ * @param true|false $pagination Display pagination? Default: true
+ *
+ * @return string A list of entities suitable for display
+ */
+function list_entities_from_metadata($meta_name, $meta_value = "", $entity_type = "", $entity_subtype = "", $owner_guid = 0, $limit = 10, $fullview = true, $viewtypetoggle = true, $pagination = true) {
+ $offset = (int) get_input('offset');
+ $limit = (int) $limit;
+ $count = get_entities_from_metadata($meta_name, $meta_value, $entity_type, $entity_subtype, $owner_guid, $limit, $offset, "", 0, true);
+ $entities = get_entities_from_metadata($meta_name, $meta_value, $entity_type, $entity_subtype, $owner_guid, $limit, $offset, "", 0, false);
+
+ return elgg_view_entity_list($entities, $count, $offset, $limit, $fullview, $viewtypetoggle, $pagination);
+}
+
+/**
+ * Returns a list of entities based on the given search criteria.
+ *
+ * @param array $meta_array Array of 'name' => 'value' pairs
+ * @param string $entity_type The type of entity to look for, eg 'site' or 'object'
+ * @param string $entity_subtype The subtype of the entity.
+ * @param int $limit
+ * @param int $offset
+ * @param string $order_by Optional ordering.
+ * @param int $site_guid The site to get entities for. Leave as 0 (default) for the current site; -1 for all sites.
+ * @param true|false $count If set to true, returns the total number of entities rather than a list. (Default: false)
+ * @param string $meta_array_operator Operator used for joining the metadata array together
+ * @return int|array List of ElggEntities, or the total number if count is set to false
+ */
+function get_entities_from_metadata_multi($meta_array, $entity_type = "", $entity_subtype = "", $owner_guid = 0, $limit = 10, $offset = 0, $order_by = "", $site_guid = 0, $count = false, $meta_array_operator = 'and') {
+ global $CONFIG;
+
+ if (!is_array($meta_array) || sizeof($meta_array) == 0) {
return false;
}
-
- /**
- * Clear all annotations belonging to a given owner_guid
- *
- * @param int $owner_guid The owner
- */
- function clear_metadata_by_owner($owner_guid)
- {
- global $CONFIG;
-
- $owner_guid = (int)$owner_guid;
-
- $metas = get_data("SELECT id from {$CONFIG->dbprefix}metadata WHERE owner_guid=$owner_guid");
- $deleted = 0;
-
- foreach ($metas as $id)
- {
- if (delete_metadata($id->id)) // Is this the best way?
- $deleted++;
+
+ $where = array();
+
+ $mindex = 1;
+ $join = "";
+ $metawhere = array();
+ $meta_array_operator = sanitise_string($meta_array_operator);
+ foreach($meta_array as $meta_name => $meta_value) {
+ $meta_n = get_metastring_id($meta_name);
+ $meta_v = get_metastring_id($meta_value);
+ $join .= " JOIN {$CONFIG->dbprefix}metadata m{$mindex} on e.guid = m{$mindex}.entity_guid ";
+ /*if ($meta_name!=="")
+ $where[] = "m{$mindex}.name_id='$meta_n'";
+ if ($meta_value!=="")
+ $where[] = "m{$mindex}.value_id='$meta_v'";*/
+ $metawhere[] = "(m{$mindex}.name_id='$meta_n' AND m{$mindex}.value_id='$meta_v')";
+ $mindex++;
+ }
+ $where[] = "(".implode($meta_array_operator, $metawhere).")";
+
+ $entity_type = sanitise_string($entity_type);
+ $entity_subtype = get_subtype_id($entity_type, $entity_subtype);
+ $limit = (int)$limit;
+ $offset = (int)$offset;
+ if ($order_by == "") {
+ $order_by = "e.time_created desc";
+ }
+ $order_by = sanitise_string($order_by);
+ if ((is_array($owner_guid) && (count($owner_guid)))) {
+ foreach($owner_guid as $key => $guid) {
+ $owner_guid[$key] = (int) $guid;
}
-
- return $deleted;
+ } else {
+ $owner_guid = (int) $owner_guid;
}
-
- /**
- * Handler called by trigger_plugin_hook on the "export" event.
- */
- function export_metadata_plugin_hook($hook, $entity_type, $returnvalue, $params)
- {
- // Sanity check values
- if ((!is_array($params)) && (!isset($params['guid'])))
- throw new InvalidParameterException(elgg_echo('InvalidParameterException:GUIDNotForExport'));
-
- if (!is_array($returnvalue))
- throw new InvalidParameterException(elgg_echo('InvalidParameterException:NonArrayReturnValue'));
-
- $guid = (int)$params['guid'];
- $name = $params['name'];
-
- $result = get_metadata_for_entity($guid);
-
- if ($result)
- {
- foreach ($result as $r)
- $returnvalue[] = $r->export();
+
+ $site_guid = (int) $site_guid;
+ if ($site_guid == 0) {
+ $site_guid = $CONFIG->site_guid;
+ }
+
+ //$access = get_access_list();
+
+ if ($entity_type!="") {
+ $where[] = "e.type = '{$entity_type}'";
+ }
+
+ if ($entity_subtype) {
+ $where[] = "e.subtype = {$entity_subtype}";
+ }
+
+ if ($site_guid > 0) {
+ $where[] = "e.site_guid = {$site_guid}";
+ }
+
+ if (is_array($owner_guid)) {
+ $where[] = "e.container_guid in (".implode(",",$owner_guid).")";
+ } else if ($owner_guid > 0) {
+ $where[] = "e.container_guid = {$owner_guid}";
+ }
+
+ //if ($owner_guid > 0)
+ // $where[] = "e.container_guid = {$owner_guid}";
+
+ if ($count) {
+ $query = "SELECT count(distinct e.guid) as total ";
+ } else {
+ $query = "SELECT distinct e.* ";
+ }
+
+ $query .= " from {$CONFIG->dbprefix}entities e {$join} where";
+ foreach ($where as $w) {
+ $query .= " $w and ";
+ }
+ $query .= get_access_sql_suffix("e"); // Add access controls
+
+ $mindex = 1;
+ foreach($meta_array as $meta_name => $meta_value) {
+ $query .= ' and ' . get_access_sql_suffix("m{$mindex}"); // Add access controls
+ $mindex++;
+ }
+
+ if (!$count) {
+ $query .= " order by $order_by limit $offset, $limit"; // Add order and limit
+ return get_data($query, "entity_row_to_elggstar");
+ } else {
+ if ($count = get_data_row($query)) {
+ return $count->total;
}
-
- return $returnvalue;
}
-
- /**
- * Takes in a comma-separated string and returns an array of tags which have been trimmed and set to lower case
- *
- * @param string $string Comma-separated tag string
- * @return array|false An array of strings, or false on failure
- */
- function string_to_tag_array($string) {
-
- if (is_string($string)) {
- $ar = explode(",",$string);
- $ar = array_map('trim', $ar); // trim blank spaces
- $ar = array_map('elgg_strtolower', $ar); // make lower case : [Marcus Povey 20090605 - Using mb wrapper function using UTF8 safe function where available]
- $ar = array_filter($ar, 'is_not_null'); // Remove null values
- return $ar;
+ return false;
+}
+
+/**
+ * Returns a viewable list of entities based on the given search criteria.
+ *
+ * @see elgg_view_entity_list
+ *
+ * @param array $meta_array Array of 'name' => 'value' pairs
+ * @param string $entity_type The type of entity to look for, eg 'site' or 'object'
+ * @param string $entity_subtype The subtype of the entity.
+ * @param int $limit
+ * @param int $offset
+ * @param string $order_by Optional ordering.
+ * @param true|false $fullview Whether or not to display the full view (default: true)
+ * @param true|false $viewtypetoggle Whether or not to allow users to toggle to the gallery view. Default: true
+ * @param true|false $pagination Display pagination? Default: true
+ * @return string List of ElggEntities suitable for display
+ */
+function list_entities_from_metadata_multi($meta_array, $entity_type = "", $entity_subtype = "", $owner_guid = 0, $limit = 10, $fullview = true, $viewtypetoggle = true, $pagination = true) {
+ $offset = (int) get_input('offset');
+ $limit = (int) $limit;
+ $count = get_entities_from_metadata_multi($meta_array, $entity_type, $entity_subtype, $owner_guid, $limit, $offset, "", $site_guid, true);
+ $entities = get_entities_from_metadata_multi($meta_array, $entity_type, $entity_subtype, $owner_guid, $limit, $offset, "", $site_guid, false);
+
+ return elgg_view_entity_list($entities, $count, $offset, $limit, $fullview, $viewtypetoggle, $pagination);
+}
+
+/**
+ * Clear all the metadata for a given entity, assuming you have access to that metadata.
+ *
+ * @param int $guid
+ */
+function clear_metadata($entity_guid) {
+ global $CONFIG;
+
+ $entity_guid = (int)$entity_guid;
+ if ($entity = get_entity($entity_guid)) {
+ if ($entity->canEdit()) {
+ return delete_data("DELETE from {$CONFIG->dbprefix}metadata where entity_guid={$entity_guid}");
}
- return false;
-
}
-
- /**
- * Takes a metadata array (which has all kinds of properties) and turns it into a simple array of strings
- *
- * @param array $array Metadata array
- * @return array Array of strings
- */
- function metadata_array_to_values($array) {
-
- $valuearray = array();
-
- if (is_array($array)) {
- foreach($array as $element) {
- $valuearray[] = $element->value;
- }
+ return false;
+}
+
+/**
+ * Clear all annotations belonging to a given owner_guid
+ *
+ * @param int $owner_guid The owner
+ */
+function clear_metadata_by_owner($owner_guid) {
+ global $CONFIG;
+
+ $owner_guid = (int)$owner_guid;
+
+ $metas = get_data("SELECT id from {$CONFIG->dbprefix}metadata WHERE owner_guid=$owner_guid");
+ $deleted = 0;
+
+ foreach ($metas as $id) {
+ // Is this the best way?
+ if (delete_metadata($id->id)) {
+ $deleted++;
}
-
- return $valuearray;
-
}
-
- /**
- * Get the URL for this item of metadata, by default this links to the export handler in the current view.
- *
- * @param int $id
- */
- function get_metadata_url($id)
- {
- $id = (int)$id;
-
- if ($extender = get_metadata($id)) {
- return get_extender_url($extender);
- }
- return false;
+
+ return $deleted;
+}
+
+/**
+ * Handler called by trigger_plugin_hook on the "export" event.
+ */
+function export_metadata_plugin_hook($hook, $entity_type, $returnvalue, $params) {
+ // Sanity check values
+ if ((!is_array($params)) && (!isset($params['guid']))) {
+ throw new InvalidParameterException(elgg_echo('InvalidParameterException:GUIDNotForExport'));
}
-
- /**
- * Mark entities with a particular type and subtype as having access permissions
- * that can be changed independently from their parent entity
- *
- * @param string $type The type - object, user, etc
- * @param string $subtype The subtype; all subtypes by default
- */
- function register_metadata_as_independent($type, $subtype = '*') {
- global $CONFIG;
- if (!isset($CONFIG->independents)) $CONFIG->independents = array();
- $CONFIG->independents[$type][$subtype] = true;
+
+ if (!is_array($returnvalue)) {
+ throw new InvalidParameterException(elgg_echo('InvalidParameterException:NonArrayReturnValue'));
}
-
- /**
- * Determines whether entities of a given type and subtype should not change
- * their metadata in line with their parent entity
- *
- * @param string $type The type - object, user, etc
- * @param string $subtype The entity subtype
- * @return true|false
- */
- function is_metadata_independent($type, $subtype) {
- global $CONFIG;
- if (empty($CONFIG->independents)) return false;
- if (!empty($CONFIG->independents[$type][$subtype])
- || !empty($CONFIG->independents[$type]['*'])) return true;
+
+ $guid = (int)$params['guid'];
+ $name = $params['name'];
+
+ $result = get_metadata_for_entity($guid);
+
+ if ($result) {
+ foreach ($result as $r) {
+ $returnvalue[] = $r->export();
+ }
+ }
+
+ return $returnvalue;
+}
+
+/**
+ * Takes in a comma-separated string and returns an array of tags which have been trimmed and set to lower case
+ *
+ * @param string $string Comma-separated tag string
+ * @return array|false An array of strings, or false on failure
+ */
+function string_to_tag_array($string) {
+ if (is_string($string)) {
+ $ar = explode(",",$string);
+ $ar = array_map('trim', $ar); // trim blank spaces
+ $ar = array_map('elgg_strtolower', $ar); // make lower case : [Marcus Povey 20090605 - Using mb wrapper function using UTF8 safe function where available]
+ $ar = array_filter($ar, 'is_not_null'); // Remove null values
+ return $ar;
+ }
+ return false;
+
+}
+
+/**
+ * Takes a metadata array (which has all kinds of properties) and turns it into a simple array of strings
+ *
+ * @param array $array Metadata array
+ * @return array Array of strings
+ */
+function metadata_array_to_values($array) {
+ $valuearray = array();
+
+ if (is_array($array)) {
+ foreach($array as $element) {
+ $valuearray[] = $element->value;
+ }
+ }
+
+ return $valuearray;
+}
+
+/**
+ * Get the URL for this item of metadata, by default this links to the export handler in the current view.
+ *
+ * @param int $id
+ */
+function get_metadata_url($id) {
+ $id = (int)$id;
+
+ if ($extender = get_metadata($id)) {
+ return get_extender_url($extender);
+ }
+ return false;
+}
+
+/**
+ * Mark entities with a particular type and subtype as having access permissions
+ * that can be changed independently from their parent entity
+ *
+ * @param string $type The type - object, user, etc
+ * @param string $subtype The subtype; all subtypes by default
+ */
+function register_metadata_as_independent($type, $subtype = '*') {
+ global $CONFIG;
+ if (!isset($CONFIG->independents)) {
+ $CONFIG->independents = array();
+ }
+ $CONFIG->independents[$type][$subtype] = true;
+}
+
+/**
+ * Determines whether entities of a given type and subtype should not change
+ * their metadata in line with their parent entity
+ *
+ * @param string $type The type - object, user, etc
+ * @param string $subtype The entity subtype
+ * @return true|false
+ */
+function is_metadata_independent($type, $subtype) {
+ global $CONFIG;
+ if (empty($CONFIG->independents)) {
return false;
}
-
- /**
- * When an entity is updated, resets the access ID on all of its child metadata
- *
- * @param string $event The name of the event
- * @param string $object_type The type of object
- * @param ElggEntity $object The entity itself
- */
- function metadata_update($event, $object_type, $object) {
- if ($object instanceof ElggEntity) {
- if (!is_metadata_independent($object->getType(), $object->getSubtype())) {
- global $CONFIG;
- $access_id = (int) $object->access_id;
- $guid = (int) $object->getGUID();
- update_data("update {$CONFIG->dbprefix}metadata set access_id = {$access_id} where entity_guid = {$guid}");
- }
- }
- return true;
+ if (!empty($CONFIG->independents[$type][$subtype])
+ || !empty($CONFIG->independents[$type]['*'])) {
+ return true;
+ }
+ return false;
+}
+
+/**
+ * When an entity is updated, resets the access ID on all of its child metadata
+ *
+ * @param string $event The name of the event
+ * @param string $object_type The type of object
+ * @param ElggEntity $object The entity itself
+ */
+function metadata_update($event, $object_type, $object) {
+ if ($object instanceof ElggEntity) {
+ if (!is_metadata_independent($object->getType(), $object->getSubtype())) {
+ global $CONFIG;
+ $access_id = (int) $object->access_id;
+ $guid = (int) $object->getGUID();
+ update_data("update {$CONFIG->dbprefix}metadata set access_id = {$access_id} where entity_guid = {$guid}");
+ }
}
-
- /**
- * Register a metadata url handler.
- *
- * @param string $function_name The function.
- * @param string $extender_name The name, default 'all'.
- */
- function register_metadata_url_handler($function_name, $extender_name = "all") {
- return register_extender_url_handler($function_name, 'metadata', $extender_name);
- }
-
- /** Register the hook */
- register_plugin_hook("export", "all", "export_metadata_plugin_hook", 2);
- /** Call a function whenever an entity is updated **/
- register_elgg_event_handler('update','all','metadata_update');
-
-?>
+ return true;
+}
+
+/**
+ * Register a metadata url handler.
+ *
+ * @param string $function_name The function.
+ * @param string $extender_name The name, default 'all'.
+ */
+function register_metadata_url_handler($function_name, $extender_name = "all") {
+ return register_extender_url_handler($function_name, 'metadata', $extender_name);
+}
+
+/** Register the hook */
+register_plugin_hook("export", "all", "export_metadata_plugin_hook", 2);
+/** Call a function whenever an entity is updated **/
+register_elgg_event_handler('update','all','metadata_update'); \ No newline at end of file