/**
* MongoQuery::instance()
*
* @param mixed $collectionName
* @return
*/
public static function instance($collectionName)
{
if (!isset(self::$_instance)) {
self::$_instance = array();
}
if (!isset(self::$_instance[$collectionName])) {
self::$_instance[$collectionName] = new MongoQuery($collectionName);
}
return self::$_instance[$collectionName];
}
/**
* Fetches the data from the collection
* Uses the assigned cursor
*
* @return array list of data items
*/
protected function fetchData()
{
$data = array();
if (empty($this->_cursor)) {
return $data;
}
if (($sort = $this->getSort()) !== false && ($order = $sort->getOrderBy()) != '') {
$sort = array();
foreach ($this->getSortDirections($order) as $name => $descending) {
$sort[$name] = $descending ? -1 : 1;
}
$this->_cursor->sort($sort);
}
if (($pagination = $this->getPagination()) !== false) {
$pagination->setItemCount($this->getTotalItemCount());
$limit = $pagination->pageSize;
$skip = $pagination->currentPage * $limit;
$this->_cursor->limit($limit)->skip($skip);
}
$modelProperties = null;
//get the array of public, non static propertyNames of the _objectClassName instance
if (isset($this->_objectClassName) && $this->_objectClassName != 'stdClass') {
$modelInstance = new $this->_objectClassName();
if (!$modelInstance instanceof CModel) {
//CModel uses setAttributes in MongoQuery::arrayToModel
$reflectionClass = new ReflectionClass($modelInstance);
foreach ($reflectionClass->getProperties() as $property) {
if ($property->isPublic() && !$property->isStatic()) {
$modelProperties[] = $property->getName();
}
}
}
}
// fetch data
foreach ($this->_cursor as $id => $value) {
if (isset($this->_objectClassName)) {
//convert to a object
if ($this->_objectClassName == 'stdClass') {
$data[] = (object) $value;
//add as stdClass
} else {
$data[] = MongoQuery::arrayToModel($value, $this->_objectClassName, $modelProperties);
}
} else {
$data[] = $value;
}
}
return $data;
}
