public function _saveArray()
	{
		$value = $this->getModel()->getAttribute($this->getArrayFieldName());;
		$value = $this->_postgresqlArrayEncode($value);
		if($value === null && $this->onEmptySaveNull == false){
			$value = '{}';
		}
		$this->getModel()->setAttribute($this->getArrayFieldName(), $value);

		return $this;
	}