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<?php
/**
* Elgg objects
* Functions to manage multiple or single objects in an Elgg install
*
* @package Elgg
* @subpackage Core
*/
/**
* Return the object specific details of a object by a row.
*
* @param int $guid The guid to retreive
*
* @return bool
*/
function get_object_entity_as_row($guid) {
global $CONFIG;
$guid = (int)$guid;
return get_data_row("SELECT * from {$CONFIG->dbprefix}objects_entity where guid=$guid");
}
/**
* Create or update the extras table for a given object.
* Call create_entity first.
*
* @param int $guid The guid of the entity you're creating (as obtained by create_entity)
* @param string $title The title of the object
* @param string $description The object's description
*
* @return bool
*/
function create_object_entity($guid, $title, $description) {
global $CONFIG;
$guid = (int)$guid;
$title = sanitise_string($title);
$description = sanitise_string($description);
$row = get_entity_as_row($guid);
if ($row) {
// Core entities row exists and we have access to it
$query = "SELECT guid from {$CONFIG->dbprefix}objects_entity where guid = {$guid}";
if ($exists = get_data_row($query)) {
$query = "UPDATE {$CONFIG->dbprefix}objects_entity
set title='$title', description='$description' where guid=$guid";
$result = update_data($query);
if ($result != false) {
// Update succeeded, continue
$entity = get_entity($guid);
if (elgg_trigger_event('update', $entity->type, $entity)) {
return $guid;
} else {
$entity->delete();
}
}
} else {
// Update failed, attempt an insert.
$query = "INSERT into {$CONFIG->dbprefix}objects_entity
(guid, title, description) values ($guid, '$title','$description')";
$result = insert_data($query);
if ($result !== false) {
$entity = get_entity($guid);
if (elgg_trigger_event('create', $entity->type, $entity)) {
return $guid;
} else {
$entity->delete();
}
}
}
}
return false;
}
/**
* THIS FUNCTION IS DEPRECATED.
*
* Delete a object's extra data.
*
* @todo - this should be removed - was deprecated in 1.5 or earlier
*
* @param int $guid GUID
*
* @return 1
*/
function delete_object_entity($guid) {
system_message(elgg_echo('deprecatedfunction', array('delete_user_entity')));
return 1; // Always return that we have deleted one row in order to not break existing code.
}
/**
* Get the sites this object is part of
*
* @param int $object_guid The object's GUID
* @param int $limit Number of results to return
* @param int $offset Any indexing offset
*
* @return false|array On success, an array of ElggSites
*/
function get_object_sites($object_guid, $limit = 10, $offset = 0) {
$object_guid = (int)$object_guid;
$limit = (int)$limit;
$offset = (int)$offset;
return elgg_get_entities_from_relationship(array(
'relationship' => 'member_of_site',
'relationship_guid' => $object_guid,
'types' => 'site',
'limit' => $limit,
'offset' => $offset
));
}
/**
* Runs unit tests for ElggObject
*
* @param sting $hook unit_test
* @param string $type system
* @param mixed $value Array of tests
* @param mixed $params Params
*
* @return array
*/
function objects_test($hook, $type, $value, $params) {
global $CONFIG;
$value[] = "{$CONFIG->path}engine/tests/objects/objects.php";
return $value;
}
elgg_register_event_handler('init', 'system', 'objects_init', 0);
elgg_register_plugin_hook_handler('unit_test', 'system', 'objects_test');
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