Exemplo n.º 1
0
	public function aggregation($function)
	{
		$aggregation = & $this->refTable->aggregation[$function . implode('', $this->where) . implode('', $this->conditions)];
		if ($aggregation === NULL) {
			$aggregation = array();

			$selection = new NTableSelection($this->name, $this->connection);
			$selection->where = $this->where;
			$selection->parameters = $this->parameters;
			$selection->conditions = $this->conditions;

			$selection->select($function);
			$selection->select("{$this->name}.{$this->column}");
			$selection->group("{$this->name}.{$this->column}");

			foreach ($selection as $row) {
				$aggregation[$row[$this->column]] = $row;
			}
		}

		if (isset($aggregation[$this->active])) {
			foreach ($aggregation[$this->active] as $val) {
				return $val;
			}
		}
	}