/library/Zend/Cloud/DocumentService/Query.php
https://bitbucket.org/hamidrezas/melobit · PHP · 191 lines · 79 code · 12 blank · 100 comment · 8 complexity · 432b1f682e98042e0f79d2ca46bd5ade MD5 · raw file
- <?php
- /**
- * LICENSE
- *
- * This source file is subject to the new BSD license that is bundled
- * with this package in the file LICENSE.txt.
- * It is also available through the world-wide-web at this URL:
- * http://framework.zend.com/license/new-bsd
- * If you did not receive a copy of the license and are unable to
- * obtain it through the world-wide-web, please send an email
- * to license@zend.com so we can send you a copy immediately.
- *
- * @category Zend
- * @package Zend_Cloud
- * @subpackage DocumentService
- * @copyright Copyright (c) 2005-2012 Zend Technologies USA Inc. (http://www.zend.com)
- * @license http://framework.zend.com/license/new-bsd New BSD License
- */
- require_once 'Zend/Cloud/DocumentService/QueryAdapter.php';
- /**
- * Generic query object
- *
- * Aggregates operations in an array of clauses, where the first element
- * describes the clause type, and the next element describes the criteria.
- *
- * @category Zend
- * @package Zend_Cloud
- * @subpackage DocumentService
- * @copyright Copyright (c) 2005-2012 Zend Technologies USA Inc. (http://www.zend.com)
- * @license http://framework.zend.com/license/new-bsd New BSD License
- */
- class Zend_Cloud_DocumentService_Query
- implements Zend_Cloud_DocumentService_QueryAdapter
- {
- /**
- * Known query types
- */
- const QUERY_SELECT = 'select';
- const QUERY_FROM = 'from';
- const QUERY_WHERE = 'where';
- const QUERY_WHEREID = 'whereid'; // request element by ID
- const QUERY_LIMIT = 'limit';
- const QUERY_ORDER = 'order';
- /**
- * Clause list
- *
- * @var array
- */
- protected $_clauses = array();
- /**
- * Generic clause
- *
- * You can use any clause by doing $query->foo('bar')
- * but concrete adapters should be able to recognise it
- *
- * The call will be iterpreted as clause 'foo' with argument 'bar'
- *
- * @param string $name Clause/method name
- * @param mixed $args
- * @return Zend_Cloud_DocumentService_Query
- */
- public function __call($name, $args)
- {
- $this->_clauses[] = array(strtolower($name), $args);
- return $this;
- }
- /**
- * SELECT clause (fields to be selected)
- *
- * @param null|string|array $select
- * @return Zend_Cloud_DocumentService_Query
- */
- public function select($select)
- {
- if (empty($select)) {
- return $this;
- }
- if (!is_string($select) && !is_array($select)) {
- require_once 'Zend/Cloud/DocumentService/Exception.php';
- throw new Zend_Cloud_DocumentService_Exception("SELECT argument must be a string or an array of strings");
- }
- $this->_clauses[] = array(self::QUERY_SELECT, $select);
- return $this;
- }
- /**
- * FROM clause
- *
- * @param string $name Field names
- * @return Zend_Cloud_DocumentService_Query
- */
- public function from($name)
- {
- if(!is_string($name)) {
- require_once 'Zend/Cloud/DocumentService/Exception.php';
- throw new Zend_Cloud_DocumentService_Exception("FROM argument must be a string");
- }
- $this->_clauses[] = array(self::QUERY_FROM, $name);
- return $this;
- }
- /**
- * WHERE query
- *
- * @param string $cond Condition
- * @param array $args Arguments to substitute instead of ?'s in condition
- * @param string $op relation to other clauses - and/or
- * @return Zend_Cloud_DocumentService_Query
- */
- public function where($cond, $value = null, $op = 'and')
- {
- if (!is_string($cond)) {
- require_once 'Zend/Cloud/DocumentService/Exception.php';
- throw new Zend_Cloud_DocumentService_Exception("WHERE argument must be a string");
- }
- $this->_clauses[] = array(self::QUERY_WHERE, array($cond, $value, $op));
- return $this;
- }
- /**
- * Select record or fields by ID
- *
- * @param string|int $value Identifier to select by
- * @return Zend_Cloud_DocumentService_Query
- */
- public function whereId($value)
- {
- if (!is_scalar($value)) {
- require_once 'Zend/Cloud/DocumentService/Exception.php';
- throw new Zend_Cloud_DocumentService_Exception("WHEREID argument must be a scalar");
- }
- $this->_clauses[] = array(self::QUERY_WHEREID, $value);
- return $this;
- }
- /**
- * LIMIT clause (how many items to return)
- *
- * @param int $limit
- * @return Zend_Cloud_DocumentService_Query
- */
- public function limit($limit)
- {
- if ($limit != (int) $limit) {
- require_once 'Zend/Cloud/DocumentService/Exception.php';
- throw new Zend_Cloud_DocumentService_Exception("LIMIT argument must be an integer");
- }
- $this->_clauses[] = array(self::QUERY_LIMIT, $limit);
- return $this;
- }
- /**
- * ORDER clause; field or fields to sort by, and direction to sort
- *
- * @param string|int|array $sort
- * @param string $direction
- * @return Zend_Cloud_DocumentService_Query
- */
- public function order($sort, $direction = 'asc')
- {
- $this->_clauses[] = array(self::QUERY_ORDER, array($sort, $direction));
- return $this;
- }
- /**
- * "Assemble" the query
- *
- * Simply returns the clauses present.
- *
- * @return array
- */
- public function assemble()
- {
- return $this->getClauses();
- }
- /**
- * Return query clauses as an array
- *
- * @return array Clauses in the query
- */
- public function getClauses()
- {
- return $this->_clauses;
- }
- }