1
0
mirror of synced 2024-12-14 07:06:04 +03:00
doctrine2/lib/Doctrine/ORM/QueryBuilder.php

539 lines
16 KiB
PHP
Raw Normal View History

<?php
/*
* $Id$
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* This software consists of voluntary contributions made by many individuals
* and is licensed under the LGPL. For more information, see
* <http://www.doctrine-project.org>.
*/
namespace Doctrine\ORM;
use Doctrine\ORM\Query\Expr;
/**
* This class is responsible for building DQL query strings via an object oriented
* PHP interface.
*
* TODO: I don't like the API of using the Expr::*() syntax inside of the QueryBuilder
* methods. What can we do to allow them to do it more fluently with the QueryBuilder.
*
* @author Jonathan H. Wage <jonwage@gmail.com>
* @author Roman Borschel <roman@code-factory.org>
* @license http://www.opensource.org/licenses/lgpl-license.php LGPL
* @link http://www.doctrine-project.org
* @since 2.0
* @version $Revision$
*/
class QueryBuilder
{
const SELECT = 0;
const DELETE = 1;
const UPDATE = 2;
const STATE_DIRTY = 0;
const STATE_CLEAN = 1;
/**
* @var EntityManager $em Instance of an EntityManager to use for query
*/
private $_em;
/**
* @var array $dqlParts The array of DQL parts collected
*/
private $_dqlParts = array(
'select' => array(),
'from' => array(),
'where' => array(),
'groupBy' => array(),
'having' => array(),
'orderBy' => array()
);
/**
* @var integer $type The type of query this is. Can be select, update or delete
*/
private $_type = self::SELECT;
/**
* @var integer $state The state of the query object. Can be dirty or clean.
*/
private $_state = self::STATE_CLEAN;
/**
* @var string $dql The complete DQL string for this query
*/
private $_dql;
/**
* @var array $params Parameters of this query.
*/
private $_params = array();
/**
* @var integer The first result to return (the "offset").
*/
private $_firstResult = null;
/**
* @var integer The maximum number of results to return (the "limit").
*/
private $_maxResults = null;
public function __construct(EntityManager $entityManager)
{
$this->_em = $entityManager;
}
public static function create(EntityManager $entityManager)
{
return new self($entityManager);
}
public function getType()
{
return $this->_type;
}
public function getEntityManager()
{
return $this->_em;
}
public function getState()
{
return $this->_state;
}
public function getDql()
{
if ($this->_dql !== null && self::STATE_CLEAN) {
return $this->_dql;
}
$dql = '';
switch ($this->_type) {
case self::DELETE:
$dql = $this->_getDqlForDelete();
break;
case self::UPDATE:
$dql = $this->_getDqlForUpdate();
break;
case self::SELECT:
default:
$dql = $this->_getDqlForSelect();
break;
}
$this->_dql = $dql;
return $dql;
}
public function getQuery()
{
$q = new Query($this->_em);
$q->setDql($this->getDql());
$q->setParameters($this->getParameters());
$q->setFirstResult($this->getFirstResult());
$q->setMaxResults($this->getMaxResults());
return $q;
}
public function execute($params = array(), $hydrationMode = null)
{
return $this->getQuery()->execute($params, $hydrationMode);
}
/**
* Sets a query parameter.
*
* @param string|integer $key The parameter position or name.
* @param mixed $value The parameter value.
*/
public function setParameter($key, $value)
{
$this->_params[$key] = $value;
return $this;
}
/**
* Sets a collection of query parameters.
*
* @param array $params
*/
public function setParameters(array $params)
{
foreach ($params as $key => $value) {
$this->setParameter($key, $value);
}
return $this;
}
/**
* Get all defined parameters
*
* @return array Defined parameters
*/
public function getParameters($params = array())
{
if ($params) {
return array_merge($this->_params, $params);
}
return $this->_params;
}
/**
* Gets a query parameter.
*
* @param mixed $key The key (index or name) of the bound parameter.
* @return mixed The value of the bound parameter.
*/
public function getParameter($key)
{
return isset($this->_params[$key]) ? $this->_params[$key] : null;
}
/**
* Add a single DQL query part to the array of parts
*
* @param string $dqlPartName
* @param string $dqlPart
* @param string $append
* @return QueryBuilder $this
*/
public function add($dqlPartName, $dqlPart, $append = false)
{
if ($append) {
$this->_dqlParts[$dqlPartName][] = $dqlPart;
} else {
$this->_dqlParts[$dqlPartName] = array($dqlPart);
}
$this->_state = self::STATE_DIRTY;
return $this;
}
public function select($select = null)
{
$selects = func_get_args();
$this->_type = self::SELECT;
if (empty($selects)) {
return $this;
}
$select = call_user_func_array(array('Doctrine\ORM\Query\Expr', 'select'), $selects);
return $this->add('select', $select, true);
}
public function delete($delete = null, $alias = null)
{
$this->_type = self::DELETE;
if ( ! $delete) {
return $this;
}
return $this->add('from', $delete . ' ' . $alias);
}
public function update($update = null, $alias = null)
{
$this->_type = self::UPDATE;
if ( ! $update) {
return $this;
}
return $this->add('from', $update . ' ' . $alias);
}
public function set($key, $value)
{
return $this->add('set', Expr::eq($key, $value), true);
}
public function from($from, $alias)
{
return $this->add('from', $from . ' ' . $alias, true);
}
public function innerJoin($parentAlias, $join, $alias, $condition = null)
{
$join = 'INNER JOIN ' . $parentAlias . '.' . $join . ' '
. $alias . (isset($condition) ? ' ' . $condition : null);
return $this->add('from', $join, true);
}
public function leftJoin($parentAlias, $join, $alias, $condition = null)
{
$join = 'LEFT JOIN ' . $parentAlias . '.' . $join . ' '
. $alias . (isset($condition) ? ' ' . $condition : null);
return $this->add('from', $join, true);
}
public function where($where)
{
$where = call_user_func_array(array('Doctrine\ORM\Query\Expr', 'andx'), func_get_args());
return $this->add('where', $where, false);
}
public function andWhere($where)
{
if (count($this->_getDqlQueryPart('where')) > 0) {
$this->add('where', 'AND', true);
}
$where = call_user_func_array(array('Doctrine\ORM\Query\Expr', 'andx'), func_get_args());
return $this->add('where', $where, true);
}
public function orWhere($where)
{
if (count($this->_getDqlQueryPart('where')) > 0) {
$this->add('where', 'OR', true);
}
$where = call_user_func_array(array('Doctrine\ORM\Query\Expr', 'orx'), func_get_args());
return $this->add('where', $where, true);
}
public function andWhereIn($expr, $params)
{
if (count($this->_getDqlQueryPart('where')) > 0) {
$this->add('where', 'AND', true);
}
return $this->add('where', Expr::in($expr, $params), true);
}
public function orWhereIn($expr, $params = array(), $not = false)
{
if (count($this->_getDqlQueryPart('where')) > 0) {
$this->add('where', 'OR', true);
}
return $this->add('where', Expr::in($expr, $params), true);
}
public function andWhereNotIn($expr, $params = array())
{
if (count($this->_getDqlQueryPart('where')) > 0) {
$this->add('where', 'AND', true);
}
return $this->add('where', Expr::notIn($expr, $params), true);
}
public function orWhereNotIn($expr, $params = array())
{
if (count($this->_getDqlQueryPart('where')) > 0) {
$this->add('where', 'OR', true);
}
return $this->add('where', Expr::notIn($expr, $params), true);
}
public function groupBy($groupBy)
{
return $this->add('groupBy', Expr::groupBy($groupBy), false);
}
public function addGroupBy($groupBy)
{
return $this->add('groupBy', Expr::groupBy($groupBy), true);
}
public function having($having)
{
return $this->add('having', Expr::having($having), false);
}
public function andHaving($having)
{
if (count($this->_getDqlQueryPart('having')) > 0) {
$this->add('having', 'AND', true);
}
return $this->add('having', Expr::having($having), true);
}
public function orHaving($having)
{
if (count($this->_getDqlQueryPart('having')) > 0) {
$this->add('having', 'OR', true);
}
return $this->add('having', Expr::having($having), true);
}
public function orderBy($sort, $order)
{
return $this->add('orderBy', Expr::orderBy($sort, $order), false);
}
public function addOrderBy($sort, $order)
{
return $this->add('orderBy', Expr::orderBy($sort, $order), true);
}
/**
* Sets the position of the first result to retrieve (the "offset").
*
* @param integer $firstResult The first result to return.
* @return Query This query object.
*/
public function setFirstResult($firstResult)
{
$this->_firstResult = $firstResult;
return $this;
}
/**
* Gets the position of the first result the query object was set to retrieve (the "offset").
* Returns NULL if {@link setFirstResult} was not applied to this query.
*
* @return integer The position of the first result.
*/
public function getFirstResult()
{
return $this->_firstResult;
}
/**
* Sets the maximum number of results to retrieve (the "limit").
*
* @param integer $maxResults
* @return Query This query object.
*/
public function setMaxResults($maxResults)
{
$this->_maxResults = $maxResults;
return $this;
}
/**
* Gets the maximum number of results the query object was set to retrieve (the "limit").
* Returns NULL if {@link setMaxResults} was not applied to this query.
*
* @return integer Maximum number of results.
*/
public function getMaxResults()
{
return $this->_maxResults;
}
/**
* Get the DQL query string for DELETE queries
*
* BNF:
*
* DeleteStatement = DeleteClause [WhereClause] [OrderByClause] [LimitClause] [OffsetClause]
* DeleteClause = "DELETE" "FROM" RangeVariableDeclaration
* WhereClause = "WHERE" ConditionalExpression
* OrderByClause = "ORDER" "BY" OrderByItem {"," OrderByItem}
* LimitClause = "LIMIT" integer
* OffsetClause = "OFFSET" integer
*
* @return string $dql
*/
private function _getDqlForDelete()
{
return 'DELETE'
. $this->_getReducedDqlQueryPart('from', array('pre' => ' ', 'separator' => ' '))
. $this->_getReducedDqlQueryPart('where', array('pre' => ' WHERE ', 'separator' => ' '))
. $this->_getReducedDqlQueryPart('orderBy', array('pre' => ' ORDER BY ', 'separator' => ', '));
}
/**
* Get the DQL query string for UPDATE queries
*
* BNF:
*
* UpdateStatement = UpdateClause [WhereClause] [OrderByClause] [LimitClause] [OffsetClause]
* UpdateClause = "UPDATE" RangeVariableDeclaration "SET" UpdateItem {"," UpdateItem}
* WhereClause = "WHERE" ConditionalExpression
* OrderByClause = "ORDER" "BY" OrderByItem {"," OrderByItem}
* LimitClause = "LIMIT" integer
* OffsetClause = "OFFSET" integer
*
* @return string $dql
*/
private function _getDqlForUpdate()
{
return 'UPDATE'
. $this->_getReducedDqlQueryPart('from', array('pre' => ' ', 'separator' => ' '))
. $this->_getReducedDqlQueryPart('set', array('pre' => ' SET ', 'separator' => ', '))
. $this->_getReducedDqlQueryPart('where', array('pre' => ' WHERE ', 'separator' => ' '))
. $this->_getReducedDqlQueryPart('orderBy', array('pre' => ' ORDER BY ', 'separator' => ', '));
}
/**
* Get the DQL query string for SELECT queries
*
* BNF:
*
* SelectStatement = [SelectClause] FromClause [WhereClause] [GroupByClause] [HavingClause] [OrderByClause] [LimitClause] [OffsetClause]
* SelectClause = "SELECT" ["ALL" | "DISTINCT"] SelectExpression {"," SelectExpression}
* FromClause = "FROM" IdentificationVariableDeclaration {"," IdentificationVariableDeclaration}
* WhereClause = "WHERE" ConditionalExpression
* GroupByClause = "GROUP" "BY" GroupByItem {"," GroupByItem}
* HavingClause = "HAVING" ConditionalExpression
* OrderByClause = "ORDER" "BY" OrderByItem {"," OrderByItem}
* LimitClause = "LIMIT" integer
* OffsetClause = "OFFSET" integer
*
* @return string $dql
*/
private function _getDqlForSelect()
{
return 'SELECT'
. $this->_getReducedDqlQueryPart('select', array('pre' => ' ', 'separator' => ', '))
. $this->_getReducedDqlQueryPart('from', array('pre' => ' FROM ', 'separator' => ' '))
. $this->_getReducedDqlQueryPart('where', array('pre' => ' WHERE ', 'separator' => ' '))
. $this->_getReducedDqlQueryPart('groupBy', array('pre' => ' GROUP BY ', 'separator' => ', '))
. $this->_getReducedDqlQueryPart('having', array('pre' => ' HAVING ', 'separator' => ' '))
. $this->_getReducedDqlQueryPart('orderBy', array('pre' => ' ORDER BY ', 'separator' => ', '));
}
private function _getReducedDqlQueryPart($queryPartName, $options = array())
{
if (empty($this->_dqlParts[$queryPartName])) {
return (isset($options['empty']) ? $options['empty'] : '');
}
$str = (isset($options['pre']) ? $options['pre'] : '');
$str .= implode($options['separator'], $this->_getDqlQueryPart($queryPartName));
$str .= (isset($options['post']) ? $options['post'] : '');
return $str;
}
private function _getDqlQueryPart($queryPartName)
{
return $this->_dqlParts[$queryPartName];
}
}