public function getComputedColumns()
	{
		//make sure we only run this once and then return the cached version
		if (!sizeof($this->computedColumns))
		{
			foreach ($this->getColumns() as $column)
			{
				if (!$column->getOption('is_related') && $column->getOption('is_computed'))
				{
					$this->computedColumns[$column->getOption('column_name')] = $column->getOption('column_name');
				}
			}
		}

		return $this->computedColumns;
	}
public function getComputedColumns()
	{
		//make sure we only run this once and then return the cached version
		if (!sizeof($this->computedColumns))
		{
			foreach ($this->getColumns() as $column)
			{
				if (!$column->getOption('is_related') && $column->getOption('is_computed'))
				{
					$this->computedColumns[$column->getOption('column_name')] = $column->getOption('column_name');
				}
			}
		}

		return $this->computedColumns;
	}
public function getComputedColumns ( ) { //make sure we only run this once and then return the cached version if ( ! sizeof ( $ this -> computedColumns ) ) { foreach ( $ this -> getColumns ( ) as $ column ) { if ( ! $ column -> getOption ( 'is_related' ) && $ column -> getOption ( 'is_computed' ) ) { $ this -> computedColumns [ $ column -> getOption ( 'column_name' ) ] = $ column -> getOption ( 'column_name' ) ; } } } return $ this -> computedColumns ; }
Gets the columns that are computed

@return array
Gets the columns that are computed