520 lines
14 KiB
PHP
520 lines
14 KiB
PHP
<?php
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/*
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* $Id: Abstract.php 1393 2008-03-06 17:49:16Z guilhermeblanco $
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* This software consists of voluntary contributions made by many individuals
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* and is licensed under the LGPL. For more information, see
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* <http://www.doctrine-project.org>.
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*/
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namespace Doctrine\ORM;
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/**
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* Base class for Query and NativeQuery.
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*
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* @license http://www.opensource.org/licenses/lgpl-license.php LGPL
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* @link www.doctrine-project.com
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* @since 1.0
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* @version $Revision: 1393 $
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* @author Guilherme Blanco <guilhermeblanco@hotmail.com>
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* @author Konsta Vesterinen <kvesteri@cc.hut.fi>
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* @author Roman Borschel <roman@code-factory.org>
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*/
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abstract class AbstractQuery
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{
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/* Hydration mode constants */
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/**
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* Hydrates an object graph. This is the default behavior.
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*/
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const HYDRATE_OBJECT = 1;
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/**
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* Hydrates an array graph.
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*/
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const HYDRATE_ARRAY = 2;
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/**
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* Hydrates a flat, rectangular result set with scalar values.
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*/
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const HYDRATE_SCALAR = 3;
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/**
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* Hydrates a single scalar value.
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*/
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const HYDRATE_SINGLE_SCALAR = 4;
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/**
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* Hydrates nothing.
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*/
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const HYDRATE_NONE = 5;
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/**
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* @var array $params Parameters of this query.
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*/
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protected $_params = array();
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/**
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* @var array $_enumParams Array containing the keys of the parameters that should be enumerated.
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*/
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//protected $_enumParams = array();
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/**
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* The user-specified ResultSetMapping to use.
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*
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* @var ResultSetMapping
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*/
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protected $_resultSetMapping;
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/**
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* @var Doctrine\ORM\EntityManager The entity manager used by this query object.
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*/
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protected $_em;
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/**
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* A set of query hints.
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*
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* @var array
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*/
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protected $_hints = array();
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/**
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* @var integer The hydration mode.
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*/
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protected $_hydrationMode = self::HYDRATE_OBJECT;
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/**
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* The locally set cache driver used for caching result sets of this query.
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*
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* @var CacheDriver
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*/
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protected $_resultCache;
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/**
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* @var boolean Boolean value that indicates whether or not expire the result cache.
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*/
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protected $_expireResultCache = false;
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/**
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* @var int Result Cache lifetime.
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*/
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protected $_resultCacheTTL;
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/**
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* Initializes a new instance of a class derived from <tt>AbstractQuery</tt>.
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*
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* @param Doctrine\ORM\EntityManager $entityManager
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*/
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public function __construct(EntityManager $entityManager)
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{
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$this->_em = $entityManager;
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}
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/**
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* Retrieves the associated EntityManager of this Query instance.
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*
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* @return Doctrine\ORM\EntityManager
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*/
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public function getEntityManager()
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{
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return $this->_em;
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}
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/**
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* Frees the resources used by the query object.
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*/
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public function free()
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{
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$this->_params = array();
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$this->_enumParams = array();
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}
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/**
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* Set enumerated parameters
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*
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* @param array $enumParams Enum parameters.
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*/
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/*protected function _setEnumParams($enumParams = array())
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{
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$this->_enumParams = $enumParams;
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}*/
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/**
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* Get all enumerated parameters
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*
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* @return array All enumerated parameters
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*/
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/*public function getEnumParams()
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{
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return $this->_enumParams;
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}*/
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/**
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* Convert ENUM parameters to their integer equivalents
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*
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* @param $params Parameters to be converted
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* @return array Converted parameters array
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*/
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/*public function convertEnums($params)
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{
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foreach ($this->_enumParams as $key => $values) {
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if (isset($params[$key]) && ! empty($values)) {
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$params[$key] = $values[0]->enumIndex($values[1], $params[$key]);
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}
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}
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return $params;
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}*/
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/**
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* Get all defined parameters
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*
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* @return array Defined parameters
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*/
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public function getParams($params = array())
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{
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return array_merge($this->_params, $params);
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}
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/**
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* setParams
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*
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* @param array $params
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*/
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public function setParams(array $params = array())
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{
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$this->_params = $params;
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}
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/**
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* Gets the SQL query that corresponds to this query object.
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* The returned SQL syntax depends on the connection driver that is used
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* by this query object at the time of this method call.
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*
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* @return string SQL query
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*/
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abstract public function getSql();
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/**
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* Sets a query parameter.
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*
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* @param string|integer $key The parameter position or name.
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* @param mixed $value The parameter value.
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*/
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public function setParameter($key, $value)
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{
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$this->_params[$key] = $value;
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}
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/**
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* Sets a collection of query parameters.
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*
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* @param array $params
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*/
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public function setParameters(array $params)
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{
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foreach ($params as $key => $value) {
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$this->setParameter($key, $value);
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}
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}
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/**
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* Sets the ResultSetMapping that should be used for hydration.
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*
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* @param ResultSetMapping $rsm
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*/
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public function setResultSetMapping($rsm)
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{
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$this->_resultSetMapping = $rsm;
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}
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/**
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* Defines a cache driver to be used for caching result sets.
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*
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* @param Doctrine\ORM\Cache\Cache $driver Cache driver
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* @return Doctrine\ORM\Query
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*/
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public function setResultCache($resultCache = null)
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{
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if ($resultCache !== null && ! ($resultCache instanceof \Doctrine\ORM\Cache\Cache)) {
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throw DoctrineException::updateMe(
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'Method setResultCache() accepts only an instance of Doctrine_Cache_Interface or null.'
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);
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}
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$this->_resultCache = $resultCache;
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return $this;
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}
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/**
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* Returns the cache driver used for caching result sets.
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*
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* @return Doctrine_Cache_Interface Cache driver
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*/
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public function getResultCacheDriver()
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{
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if ($this->_resultCache) {
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return $this->_resultCache;
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} else {
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return $this->_em->getConfiguration()->getResultCacheImpl();
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}
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}
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/**
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* Defines how long the result cache will be active before expire.
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*
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* @param integer $timeToLive How long the cache entry is valid
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* @return Doctrine\ORM\Query
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*/
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public function setResultCacheLifetime($timeToLive)
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{
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if ($timeToLive !== null) {
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$timeToLive = (int) $timeToLive;
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}
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$this->_resultCacheTTL = $timeToLive;
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return $this;
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}
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/**
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* Retrieves the lifetime of resultset cache.
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*
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* @return int
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*/
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public function getResultCacheLifetime()
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{
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return $this->_resultCacheTTL;
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}
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/**
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* Defines if the resultset cache is active or not.
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*
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* @param boolean $expire Whether or not to force resultset cache expiration.
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* @return Doctrine_ORM_Query
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*/
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public function setExpireResultCache($expire = true)
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{
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$this->_expireResultCache = (bool) $expire;
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return $this;
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}
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/**
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* Retrieves if the resultset cache is active or not.
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*
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* @return bool
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*/
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public function getExpireResultCache()
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{
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return $this->_expireResultCache;
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}
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/**
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* Defines the processing mode to be used during hydration.
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*
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* @param integer $hydrationMode Doctrine processing mode to be used during hydration process.
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* One of the Query::HYDRATE_* constants.
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* @return Doctrine\ORM\Query
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*/
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public function setHydrationMode($hydrationMode)
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{
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$this->_hydrationMode = $hydrationMode;
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return $this;
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}
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/**
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* Gets the hydration mode currently used by the query.
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*
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* @return integer
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*/
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public function getHydrationMode()
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{
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return $this->_hydrationMode;
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}
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/**
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* Gets the list of results for the query.
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*
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* Alias for execute(array(), HYDRATE_OBJECT).
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*
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* @return Collection
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*/
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public function getResultList()
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{
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return $this->execute(array(), self::HYDRATE_OBJECT);
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}
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/**
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* Gets the array of results for the query.
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*
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* Alias for execute(array(), HYDRATE_ARRAY).
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*
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* @return array
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*/
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public function getResultArray()
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{
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return $this->execute(array(), self::HYDRATE_ARRAY);
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}
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/**
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* Gets the scalar results for the query.
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*
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* Alias for execute(array(), HYDRATE_SCALAR).
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*
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* @return array
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*/
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public function getScalarResult()
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{
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return $this->execute(array(), self::HYDRATE_SCALAR);
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}
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/**
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* Gets the single result of the query.
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* Enforces the uniqueness of the result. If the result is not unique,
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* a QueryException is thrown.
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*
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* @param integer $hydrationMode
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* @return mixed
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* @throws QueryException If the query result is not unique.
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*/
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public function getSingleResult($hydrationMode = null)
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{
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$result = $this->execute(array(), $hydrationMode);
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if (is_array($result)) {
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if (count($result) > 1) {
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throw QueryException::nonUniqueResult();
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}
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return array_shift($result);
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} else if (is_object($result)) {
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if (count($result) > 1) {
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throw QueryException::nonUniqueResult();
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}
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return $result->first();
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}
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return $result;
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}
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/**
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* Gets the single scalar result of the query.
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*
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* Alias for getSingleResult(HYDRATE_SINGLE_SCALAR).
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*
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* @return mixed
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* @throws QueryException If the query result is not unique.
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*/
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public function getSingleScalarResult()
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{
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return $this->getSingleResult(self::HYDRATE_SINGLE_SCALAR);
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}
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/**
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* Sets an implementation-specific hint. If the hint name is not recognized,
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* it is silently ignored.
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*
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* @param string $name The name of the hint.
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* @param mixed $value The value of the hint.
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*/
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public function setHint($name, $value)
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{
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$this->_hints[$name] = $value;
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}
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/**
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* Gets an implementation-specific hint. If the hint name is not recognized,
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* FALSE is returned.
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*
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* @param string $name The name of the hint.
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* @return mixed The value of the hint or FALSe, if the hint name is not recognized.
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*/
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public function getHint($name)
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{
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return isset($this->_hints[$name]) ? $this->_hints[$name] : false;
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}
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/**
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* Executes the query and returns an IterableResult that can be used to incrementally
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* iterated over the result.
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*
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* @param array $params The query parameters.
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* @param integer $hydrationMode The hydratio mode to use.
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* @return IterableResult
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*/
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public function iterate(array $params = array(), $hydrationMode = self::HYDRATE_OBJECT)
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{
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return $this->_em->getHydrator($this->_hydrationMode)->iterate(
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$this->_execute($params, $hydrationMode), $this->_resultSetMapping
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);
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}
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/**
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* Executes the query.
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*
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* @param string $params Any additional query parameters.
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* @param integer $hydrationMode Processing mode to be used during the hydration process.
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* @return mixed
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*/
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public function execute($params = array(), $hydrationMode = null)
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{
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if ($this->_em->getUnitOfWork()->hasPendingInsertions()) {
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$this->_em->flush();
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}
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if ($hydrationMode !== null) {
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$this->_hydrationMode = $hydrationMode;
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}
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$params = $this->getParams($params);
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// Check result cache
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if ($cacheDriver = $this->getResultCacheDriver()) {
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// Calculate hash for DQL query.
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$hash = md5($this->getDql() . var_export($params, true));
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$cached = ($this->_expireResultCache) ? false : $cacheDriver->fetch($hash);
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if ($cached === false) {
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// Cache miss.
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$result = $this->_doExecute($params);
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$queryResult = CacheHandler::fromResultSet($this, $result);
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$cacheDriver->save($hash, $queryResult->toCachedForm(), $this->_resultCacheTTL);
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return $result;
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} else {
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// Cache hit.
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$queryResult = CacheHandler::fromCachedResult($this, $cached);
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return $queryResult->getResultSet();
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}
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}
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$stmt = $this->_doExecute($params);
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if (is_integer($stmt)) {
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return $stmt;
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}
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return $this->_em->getHydrator($this->_hydrationMode)->hydrateAll($stmt, $this->_resultSetMapping);
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}
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/**
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* @nodoc
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*/
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protected function _prepareParams(array $params)
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{
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return $this->_em->getConnection()->getDatabasePlatform()->convertBooleans($params);
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}
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/**
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* Executes the query and returns a reference to the resulting Statement object.
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*
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* @param array $params
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*/
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abstract protected function _doExecute(array $params);
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}
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