<?php /** * Zend Framework (http://framework.zend.com/) * * @link http://github.com/zendframework/zf2 for the canonical source repository * @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com) * @license http://framework.zend.com/license/new-bsd New BSD License */ namespace Zend\Db\Sql; interface ExpressionInterface { const TYPE_IDENTIFIER = 'identifier'; const TYPE_VALUE = 'value'; const TYPE_LITERAL = 'literal'; /** * @deprecated This will go away in 2.1 */ const TYPE_SELECT = 'select'; /** * @abstract * * @return array of array|string should return an array in the format: * * array ( * // a sprintf formatted string * string $specification, * * // the values for the above sprintf formatted string * array $values, * * // an array of equal length of the $values array, with either TYPE_IDENTIFIER or TYPE_VALUE for each value * array $types, * ) * */ public function getExpressionData(); }