300 lines
8.2 KiB
PHP
300 lines
8.2 KiB
PHP
<?php
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/*
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* $Id$
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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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use Doctrine\ORM\Query\CacheHandler;
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use Doctrine\ORM\Query\Parser;
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use Doctrine\ORM\Query\QueryException;
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/**
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* A Query object represents a DQL query.
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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.org
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* @since 1.0
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* @version $Revision: 3938 $
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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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class Query extends AbstractQuery
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{
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/**
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* A query object is in CLEAN state when it has NO unparsed/unprocessed DQL parts.
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*/
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const STATE_CLEAN = 1;
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/**
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* A query object is in state DIRTY when it has DQL parts that have not yet been
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* parsed/processed. This is automatically defined as DIRTY when addDqlQueryPart
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* is called.
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*/
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const STATE_DIRTY = 2;
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/**
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* @var integer $_state The current state of this query.
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*/
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protected $_state = self::STATE_CLEAN;
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/**
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* @var string $_dql Cached DQL query.
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*/
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protected $_dql = null;
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/**
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* @var Doctrine\ORM\Query\ParserResult The parser result that holds DQL => SQL information.
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*/
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protected $_parserResult;
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/**
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* @var CacheDriver The cache driver used for caching queries.
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*/
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protected $_queryCache;
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/**
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* @var boolean Boolean value that indicates whether or not expire the query cache.
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*/
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protected $_expireQueryCache = false;
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/**
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* @var int Query Cache lifetime.
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*/
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protected $_queryCacheTTL;
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// End of Caching Stuff
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/**
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* Initializes a new Query instance.
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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 $entityManager)
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{
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parent::__construct($entityManager);
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}
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/**
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* Gets the SQL query/queries that correspond to this DQL query.
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*
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* @return mixed The built sql query or an array of all sql queries.
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* @override
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*/
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public function getSql()
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{
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return $this->parse()->getSqlExecutor()->getSqlStatements();
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}
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/**
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* Parses the DQL query, if necessary, and stores the parser result.
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*
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* Note: Populates $this->_parserResult as a side-effect.
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*
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* @return Doctrine\ORM\Query\ParserResult
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*/
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public function parse()
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{
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if ($this->_state === self::STATE_DIRTY) {
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$parser = new Parser($this);
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$this->_parserResult = $parser->parse();
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$this->_state = self::STATE_CLEAN;
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}
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return $this->_parserResult;
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}
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/**
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* _execute
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*
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* @param array $params
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* @return PDOStatement The executed PDOStatement.
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* @override
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*/
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protected function _doExecute(array $params)
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{
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// If there is a CacheDriver associated to cache queries...
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if ($queryCache = $this->getQueryCacheDriver()) {
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// Calculate hash for dql query.
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$hash = md5($this->getDql() . 'DOCTRINE_QUERY_CACHE_SALT');
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$cached = ($this->_expireQueryCache) ? false : $queryCache->fetch($hash);
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if ($cached === false) {
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// Cache miss.
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$executor = $this->parse()->getSqlExecutor();
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$queryCache->save($hash, serialize($this->_parserResult), null);
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} else {
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// Cache hit.
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$this->_parserResult = unserialize($cached);
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$executor = $this->_parserResult->getSqlExecutor();
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}
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} else {
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$executor = $this->parse()->getSqlExecutor();
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}
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// Assignments for Enums
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//$this->_setEnumParams($this->_parserResult->getEnumParams());
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// Converting parameters
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$params = $this->_prepareParams($params);
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if ( ! $this->_resultSetMapping) {
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$this->_resultSetMapping = $this->_parserResult->getResultSetMapping();
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}
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// Executing the query and returning statement
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return $executor->execute($this->_em->getConnection(), $params);
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}
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/**
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* Defines a cache driver to be used for caching queries.
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*
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* @param Doctrine_Cache_Interface|null $driver Cache driver
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* @return Doctrine_ORM_Query
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*/
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public function setQueryCacheDriver($queryCache)
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{
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$this->_queryCache = $queryCache;
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return $this;
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}
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/**
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* Returns the cache driver used for query caching.
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*
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* @return CacheDriver The cache driver used for query caching or NULL, if this
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* Query does not use query caching.
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*/
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public function getQueryCacheDriver()
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{
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if ($this->_queryCache) {
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return $this->_queryCache;
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} else {
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return $this->_em->getConfiguration()->getQueryCacheImpl();
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}
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}
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/**
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* Defines how long the query cache will be active before expire.
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*
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* @param integer $timeToLive How long the cache entry is valid
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* @return Doctrine_ORM_Query
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*/
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public function setQueryCacheLifetime($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->_queryCacheTTL = $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 getQueryCacheLifetime()
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{
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return $this->_queryCacheTTL;
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}
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/**
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* Defines if the query cache is active or not.
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*
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* @param boolean $expire Whether or not to force query cache expiration.
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* @return Doctrine_ORM_Query
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*/
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public function setExpireQueryCache($expire = true)
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{
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$this->_expireQueryCache = $expire;
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return $this;
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}
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/**
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* Retrieves if the query 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 getExpireQueryCache()
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{
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return $this->_expireQueryCache;
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}
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/**
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* @override
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*/
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public function free()
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{
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parent::free();
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$this->_dql = null;
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$this->_state = self::STATE_CLEAN;
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}
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/**
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* Sets a DQL query string.
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*
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* @param string $dqlQuery DQL Query
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*/
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public function setDql($dqlQuery)
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{
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$this->free();
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if ($dqlQuery !== null) {
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$this->_dql = $dqlQuery;
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$this->_state = self::STATE_DIRTY;
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}
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}
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/**
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* Returns the DQL query that is represented by this query object.
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*
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* @return string DQL query
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*/
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public function getDql()
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{
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return $this->_dql;
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}
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/**
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* Returns the state of this query object
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* By default the type is Doctrine_ORM_Query_Abstract::STATE_CLEAN but if it appears any unprocessed DQL
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* part, it is switched to Doctrine_ORM_Query_Abstract::STATE_DIRTY.
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*
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* @see AbstractQuery::STATE_CLEAN
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* @see AbstractQuery::STATE_DIRTY
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*
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* @return integer Return the query state
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*/
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public function getState()
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{
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return $this->_state;
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}
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/**
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* Method to check if an arbitrary piece of DQL exists
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*
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* @param string $dql Arbitrary piece of DQL to check for
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* @return boolean
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*/
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public function contains($dql)
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{
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return stripos($this->getDql(), $dql) === false ? false : true;
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}
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} |