diff options
Diffstat (limited to 'engine')
| -rw-r--r-- | engine/lib/metadata.php | 196 |
1 files changed, 194 insertions, 2 deletions
diff --git a/engine/lib/metadata.php b/engine/lib/metadata.php index 188b9873e..946f7fcba 100644 --- a/engine/lib/metadata.php +++ b/engine/lib/metadata.php @@ -11,10 +11,202 @@ * @link http://elgg.org/ */ + /** + * @class ElggMetadata + * @author Marcus Povey <marcus@dushka.co.uk> + */ + class ElggMetadata + { + /** + * This contains the site's main properties (id, etc) + * @var array + */ + private $attributes; + + /** + * Construct a new site object, optionally from a given id value. + * + * @param int $id + */ + function __construct($id = null) + { + if (!empty($id)) { + if ($metadata = get_metadata($id)) { + $objarray = (array) $metadata; + foreach($objarray as $key => $value) { + $this->attributes[$key] = $value; + } + } + } + } + + function __get($name) { + if (isset($attributes[$name])) { + return $attributes[$name]; + } + return null; + } + + function __set($name, $value) { + $this->attributes[$name] = $value; + return true; + } + + /** + * Return the owner of this metadata. + * + * @return mixed + */ + function getOwner() { return get_user($this->owner_id); } + + function save() + { + if (isset($this->id)) + return update_metadata($this->id, $this->name, $this->value, $this->value_type, $this->owner_id, $this->access_id); + else + { + $this->id = create_metadata($this->object_id, $this->object_type, $this->name, $this->value, $this->value_type, $this->owner_id, $this->access_id); + return $this->id; + } + + } + + /** + * Delete a given site. + */ + function delete() { return delete_metadata($this->id); } + + } + /** + * Create a new metadata. + * + * @param int $object_id + * @param string $object_type + * @param string $name + * @param string $value + * @param string $value_type + * @param int $owner_id + * @param int $access_id + */ + function create_metadata($object_id, $object_type, $name, $value, $value_type, $owner_id, $access_id = 0) + { + global $CONFIG; + + $object_id = (int)$object_id; + $object_type = sanitise_string(trim($object_type)); + $name = sanitise_string(trim($name)); + $value = sanitise_string(trim($value)); + $value_type = sanitise_string(trim($value_type)); + $owner_id = (int)$owner_id; + $access_id = (int)$access_id; + + return insert_data("INSERT into {$CONFIG->dbprefix}metadata (object_id, object_type, name, value, value_type, owner_id, created, access_id) VALUES ($object_id,'$object_type','$name','$value','$value_type', $owner_id, $access_id)"); + } - // metadata object + /** + * Update an item of metadata. + * + * @param int $id + * @param string $name + * @param string $value + * @param string $value_type + * @param int $owner_id + * @param int $access_id + */ + function update_metadata($id, $name, $value, $value_type, $owner_id, $access_id) + { + global $CONFIG; + + $id = (int)$id; + $name = sanitise_string(trim($name)); + $value = sanitise_string(trim($value)); + $value_type = sanitise_string(trim($value_type)); + $owner_id = (int)$owner_id; + $access_id = (int)$access_id; + + $access = get_access_list(); + + return update_data("UPDATE {$CONFIG->dbprefix}metadata set value='$value', value_type='$value_type', access_id=$access_id where id=$id and name='$name' and (access_id in {$access} or (access_id = 0 and owner_id = {$_SESSION['id']}))"); + } + /** + * Get a specific item of metadata. + * + * @param $id int The item of metadata being retrieved. + */ + function get_metadata($id) + { + global $CONFIG; + + $id = (int)$id; + $access = get_access_list(); + + return get_data_row("SELECT * from {$CONFIG->dbprefix}metadata where id=$id and (access_id in {$access} or (access_id = 0 and owner_id = {$_SESSION['id']}))"); + } + + /** + * Get a list of metadatas for a given object/user/metadata type. + * + * @param int $object_id + * @param string $object_type + * @param int $owner_id + * @param string $order_by + * @param int $limit + * @param int $offset + */ + function get_metadatas($object_id = 0, $object_type = "", $owner_id = 0, $order_by = "created desc", $limit = 10, $offset = 0) + { + global $CONFIG; + + $object_id = (int)$object_id; + $object_type = sanitise_string(trim($object_type)); + $name = sanitise_string(trim($name)); + $value = sanitise_string(trim($value)); + $owner_id = (int)$owner_id; + $limit = (int)$limit; + $offset = (int)$offset; + + // Construct query + $where = array(); + + if ($object_id != 0) + $where[] = "object_id=$object_id"; + + if ($object_type != "") + $where[] = "object_type='$object_type'"; + + if ($owner_id != 0) + $where[] = "owner_id=$owner_id"; + + // add access controls + $access = get_access_list(); + $where[] = "(access_id in {$access} or (access_id = 0 and owner_id = {$_SESSION['id']}))"; + + // construct query. + $query = "SELECT * from {$CONFIG->dbprefix}metadata where "; + for ($n = 0; $n < count($where); $n++) + { + if ($n > 0) $query .= " and "; + $query .= $where[$n]; + } + + return get_data($query); + } + + /** + * 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; - // get / sets + $id = (int)$id; + $access = get_access_list(); + + return delete_data("DELETE from {$CONFIG->dbprefix}metadata where id=$id and (access_id in {$access} or (access_id = 0 and owner_id = {$_SESSION['id']}))"); + + } ?>
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