1182 lines
38 KiB
PHP
1182 lines
38 KiB
PHP
<?php
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/*
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* $Id: Query.php 1296 2007-04-26 17:42:03Z zYne $
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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.phpdoctrine.com>.
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*/
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Doctrine::autoload('Doctrine_Hydrate');
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/**
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* Doctrine_Query2
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*
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* @package Doctrine
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* @license http://www.opensource.org/licenses/lgpl-license.php LGPL
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* @category Object Relational Mapping
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* @link www.phpdoctrine.com
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* @since 1.0
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* @version $Revision: 1296 $
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* @author Konsta Vesterinen <kvesteri@cc.hut.fi>
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*/
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class Doctrine_Query2 extends Doctrine_Hydrate2 implements Countable {
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/**
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* @param array $subqueryAliases the table aliases needed in some LIMIT subqueries
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*/
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private $subqueryAliases = array();
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/**
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* @param boolean $needsSubquery
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*/
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private $needsSubquery = false;
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/**
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* @param boolean $limitSubqueryUsed
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*/
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private $limitSubqueryUsed = false;
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protected $_status = array('needsSubquery' => true);
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/**
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* @param boolean $isSubquery whether or not this query object is a subquery of another
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* query object
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*/
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private $isSubquery;
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private $isDistinct = false;
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private $neededTables = array();
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/**
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* @var array $pendingFields
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*/
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private $pendingFields = array();
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/**
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* @var array $pendingSubqueries SELECT part subqueries, these are called pending subqueries since
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* they cannot be parsed directly (some queries might be correlated)
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*/
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private $pendingSubqueries = array();
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/**
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* @var boolean $subqueriesProcessed Whether or not pending subqueries have already been processed.
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* Consequent calls to getQuery would result badly constructed queries
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* without this variable
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*/
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private $subqueriesProcessed = false;
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/**
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* create
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* returns a new Doctrine_Query object
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*
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* @return Doctrine_Query
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*/
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public static function create()
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{
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return new Doctrine_Query();
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}
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/**
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* isSubquery
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* if $bool parameter is set this method sets the value of
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* Doctrine_Query::$isSubquery. If this value is set to true
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* the query object will not load the primary key fields of the selected
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* components.
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*
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* If null is given as the first parameter this method retrieves the current
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* value of Doctrine_Query::$isSubquery.
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*
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* @param boolean $bool whether or not this query acts as a subquery
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* @return Doctrine_Query|bool
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*/
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public function isSubquery($bool = null)
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{
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if ($bool === null) {
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return $this->isSubquery;
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}
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$this->isSubquery = (bool) $bool;
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return $this;
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}
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/**
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* getAggregateAlias
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*
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* @return string
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*/
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public function getAggregateAlias($dqlAlias)
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{
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if(isset($this->aggregateMap[$dqlAlias])) {
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return $this->aggregateMap[$dqlAlias];
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}
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return null;
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}
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public function isDistinct($distinct = null)
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{
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if(isset($distinct))
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$this->isDistinct = (bool) $distinct;
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return $this->isDistinct;
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}
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/**
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* processPendingFields
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* the fields in SELECT clause cannot be parsed until the components
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* in FROM clause are parsed, hence this method is called everytime a
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* specific component is being parsed.
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*
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* @throws Doctrine_Query_Exception if unknown component alias has been given
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* @param string $componentAlias the alias of the component
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* @return void
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*/
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public function processPendingFields($componentAlias)
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{
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$tableAlias = $this->getTableAlias($componentAlias);
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if ( ! isset($this->tables[$tableAlias])) {
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throw new Doctrine_Query_Exception('Unknown component alias ' . $componentAlias);
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}
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$table = $this->tables[$tableAlias];
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if (isset($this->pendingFields[$componentAlias])) {
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$fields = $this->pendingFields[$componentAlias];
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// check for wildcards
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if (in_array('*', $fields)) {
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$fields = $table->getColumnNames();
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} else {
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// only auto-add the primary key fields if this query object is not
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// a subquery of another query object
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if ( ! $this->isSubquery) {
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$fields = array_unique(array_merge($table->getPrimaryKeys(), $fields));
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}
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}
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}
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foreach ($fields as $name) {
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$name = $table->getColumnName($name);
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$this->parts['select'][] = $tableAlias . '.' .$name . ' AS ' . $tableAlias . '__' . $name;
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}
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$this->neededTables[] = $tableAlias;
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}
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/**
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* parseSelect
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* parses the query select part and
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* adds selected fields to pendingFields array
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*
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* @param string $dql
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*/
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public function parseSelect($dql)
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{
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$refs = Doctrine_Query::bracketExplode($dql, ',');
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foreach ($refs as $reference) {
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if (strpos($reference, '(') !== false) {
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if (substr($reference, 0, 1) === '(') {
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// subselect found in SELECT part
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$this->parseSubselect($reference);
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} else {
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$this->parseAggregateFunction2($reference);
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}
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} else {
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$e = explode('.', $reference);
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if (count($e) > 2) {
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$this->pendingFields[] = $reference;
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} else {
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$this->pendingFields[$e[0]][] = $e[1];
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}
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}
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}
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}
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/**
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* parseSubselect
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*
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* parses the subquery found in DQL SELECT part and adds the
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* parsed form into $pendingSubqueries stack
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*
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* @param string $reference
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* @return void
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*/
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public function parseSubselect($reference)
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{
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$e = Doctrine_Query::bracketExplode($reference, ' ');
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$alias = $e[1];
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if (count($e) > 2) {
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if (strtoupper($e[1]) !== 'AS') {
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throw new Doctrine_Query_Exception('Syntax error near: ' . $reference);
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}
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$alias = $e[2];
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}
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$subquery = substr($e[0], 1, -1);
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$this->pendingSubqueries[] = array($subquery, $alias);
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}
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public function parseAggregateFunction2($func)
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{
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$e = Doctrine_Query::bracketExplode($func, ' ');
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$func = $e[0];
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$pos = strpos($func, '(');
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$name = substr($func, 0, $pos);
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try {
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$argStr = substr($func, ($pos + 1), -1);
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$args = explode(',', $argStr);
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$func = call_user_func_array(array($this->conn->expression, $name), $args);
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if(substr($func, 0, 1) !== '(') {
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$pos = strpos($func, '(');
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$name = substr($func, 0, $pos);
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} else {
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$name = $func;
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}
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$e2 = explode(' ', $args[0]);
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$distinct = '';
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if(count($e2) > 1) {
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if(strtoupper($e2[0]) == 'DISTINCT')
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$distinct = 'DISTINCT ';
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$args[0] = $e2[1];
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}
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$parts = explode('.', $args[0]);
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$owner = $parts[0];
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$alias = (isset($e[1])) ? $e[1] : $name;
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$e3 = explode('.', $alias);
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if(count($e3) > 1) {
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$alias = $e3[1];
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$owner = $e3[0];
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}
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// a function without parameters eg. RANDOM()
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if ($owner === '') {
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$owner = 0;
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}
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$this->pendingAggregates[$owner][] = array($name, $args, $distinct, $alias);
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} catch(Doctrine_Expression_Exception $e) {
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throw new Doctrine_Query_Exception('Unknown function ' . $func . '.');
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}
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}
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public function processPendingSubqueries()
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{
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if ($this->subqueriesProcessed === true) {
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return false;
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}
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foreach ($this->pendingSubqueries as $value) {
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list($dql, $alias) = $value;
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$sql = $this->createSubquery()->parseQuery($dql, false)->getQuery();
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reset($this->tableAliases);
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$tableAlias = current($this->tableAliases);
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reset($this->compAliases);
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$componentAlias = key($this->compAliases);
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$sqlAlias = $tableAlias . '__' . count($this->aggregateMap);
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$this->parts['select'][] = '(' . $sql . ') AS ' . $sqlAlias;
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$this->aggregateMap[$alias] = $sqlAlias;
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$this->subqueryAggregates[$componentAlias][] = $alias;
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}
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$this->subqueriesProcessed = true;
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return true;
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}
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public function processPendingAggregates($componentAlias)
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{
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$tableAlias = $this->getTableAlias($componentAlias);
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if ( ! isset($this->tables[$tableAlias])) {
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throw new Doctrine_Query_Exception('Unknown component path ' . $componentAlias);
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}
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$root = current($this->tables);
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$table = $this->tables[$tableAlias];
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$aggregates = array();
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if(isset($this->pendingAggregates[$componentAlias])) {
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$aggregates = $this->pendingAggregates[$componentAlias];
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}
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if ($root === $table) {
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if (isset($this->pendingAggregates[0])) {
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$aggregates += $this->pendingAggregates[0];
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}
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}
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foreach($aggregates as $parts) {
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list($name, $args, $distinct, $alias) = $parts;
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$arglist = array();
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foreach($args as $arg) {
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$e = explode('.', $arg);
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if (is_numeric($arg)) {
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$arglist[] = $arg;
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} elseif (count($e) > 1) {
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//$tableAlias = $this->getTableAlias($e[0]);
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$table = $this->tables[$tableAlias];
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$e[1] = $table->getColumnName($e[1]);
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if( ! $table->hasColumn($e[1])) {
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throw new Doctrine_Query_Exception('Unknown column ' . $e[1]);
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}
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$arglist[] = $tableAlias . '.' . $e[1];
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} else {
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$arglist[] = $e[0];
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}
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}
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$sqlAlias = $tableAlias . '__' . count($this->aggregateMap);
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if(substr($name, 0, 1) !== '(') {
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$this->parts['select'][] = $name . '(' . $distinct . implode(', ', $arglist) . ') AS ' . $sqlAlias;
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} else {
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$this->parts['select'][] = $name . ' AS ' . $sqlAlias;
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}
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$this->aggregateMap[$alias] = $sqlAlias;
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$this->neededTables[] = $tableAlias;
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}
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}
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/**
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* count
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*
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* @param array $params
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* @return integer
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*/
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public function count($params = array())
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{
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$parts_old = $this->parts;
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$this->remove('select');
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$join = $this->join;
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$where = $this->where;
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$having = $this->having;
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$table = reset($this->tables);
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$q = 'SELECT COUNT(DISTINCT ' . $this->aliasHandler->getShortAlias($table->getTableName())
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. '.' . $table->getIdentifier()
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. ') FROM ' . $table->getTableName() . ' ' . $this->aliasHandler->getShortAlias($table->getTableName());
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foreach($join as $j) {
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$q .= ' '.implode(' ',$j);
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}
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$string = $this->applyInheritance();
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if( ! empty($where)) {
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$q .= ' WHERE ' . implode(' AND ', $where);
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if( ! empty($string))
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$q .= ' AND (' . $string . ')';
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} else {
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if( ! empty($string))
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$q .= ' WHERE (' . $string . ')';
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}
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if( ! empty($having))
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$q .= ' HAVING ' . implode(' AND ',$having);
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if( ! is_array($params))
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$params = array($params);
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$params = array_merge($this->params, $params);
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$this->parts = $parts_old;
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return (int) $this->getConnection()->fetchOne($q, $params);
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}
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/**
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* addFrom
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*
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* @param strint $from
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* @return Doctrine_Query
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*/
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public function addFrom($from)
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{
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$class = 'Doctrine_Query_From';
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$parser = new $class($this);
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$parser->parse($from);
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return $this;
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}
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/**
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* leftJoin
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*
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* @param strint $join
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* @return Doctrine_Query
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*/
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public function leftJoin($join)
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{
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$class = 'Doctrine_Query_From';
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$parser = new $class($this);
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$parser->parse('LEFT JOIN ' . $join);
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return $this;
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}
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/**
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* innerJoin
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*
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* @param strint $join
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* @return Doctrine_Query
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*/
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public function innerJoin($join)
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{
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$class = 'Doctrine_Query_From';
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$parser = new $class($this);
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$parser->parse('INNER JOIN ' . $join);
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return $this;
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}
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/**
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* addOrderBy
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*
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* @param strint $orderby
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* @return Doctrine_Query
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*/
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public function addOrderBy($orderby)
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{
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if (empty($orderby)) {
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return $this;
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}
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$class = 'Doctrine_Query_Orderby';
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$parser = new $class($this);
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$this->parts['orderby'][] = $parser->parse($orderby);
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return $this;
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}
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/**
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* addWhere
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*
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* @param string $where
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* @param mixed $params
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*/
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public function addWhere($where, $params = array())
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{
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$class = 'Doctrine_Query_Where';
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$parser = new $class($this);
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$this->parts['where'][] = $parser->parse($where);
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if(is_array($params)) {
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$this->params = array_merge($this->params, $params);
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} else {
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$this->params[] = $params;
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}
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return $this;
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}
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/**
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* addSelect
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*
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* @param string $select
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*/
|
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public function addSelect($select)
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{
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$this->type = self::SELECT;
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$this->parseSelect($select);
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return $this;
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}
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/**
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* addHaving
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*
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* @param string $having
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*/
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public function addHaving($having)
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{
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$class = 'Doctrine_Query_Having';
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$parser = new $class($this);
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$this->parts['having'][] = $parser->parse($having);
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return $this;
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}
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|
/**
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* sets a query part
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*
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* @param string $name
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* @param array $args
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* @return void
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*/
|
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public function __call($name, $args)
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{
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$name = strtolower($name);
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$method = 'parse' . ucwords($name);
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switch($name) {
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case 'select':
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$this->type = self::SELECT;
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if ( ! isset($args[0])) {
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throw new Doctrine_Query_Exception('Empty select part');
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}
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$this->parseSelect($args[0]);
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break;
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case 'delete':
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$this->type = self::DELETE;
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break;
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case 'update':
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$this->type = self::UPDATE;
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$name = 'from';
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case 'from':
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$this->parts['from'] = array();
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$this->parts['select'] = array();
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$this->parts['join'] = array();
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$this->joins = array();
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$this->tables = array();
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$this->fetchModes = array();
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$this->tableIndexes = array();
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$this->tableAliases = array();
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$this->aliasHandler->clear();
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$class = "Doctrine_Query_".ucwords($name);
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$parser = new $class($this);
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$parser->parse($args[0]);
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break;
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case 'where':
|
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if(isset($args[1])) {
|
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if(is_array($args[1])) {
|
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$this->params = $args[1];
|
|
} else {
|
|
$this->params = array($args[1]);
|
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}
|
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}
|
|
case 'having':
|
|
case 'orderby':
|
|
case 'groupby':
|
|
if (empty($args[0])) {
|
|
return $this;
|
|
}
|
|
|
|
$class = 'Doctrine_Query_' . ucwords($name);
|
|
$parser = new $class($this);
|
|
|
|
$this->parts[$name] = array($parser->parse($args[0]));
|
|
break;
|
|
case 'limit':
|
|
case 'offset':
|
|
if($args[0] == null) {
|
|
$args[0] = false;
|
|
}
|
|
|
|
$this->parts[$name] = $args[0];
|
|
break;
|
|
default:
|
|
$this->parts[$name] = array();
|
|
if (method_exists($this, $method)) {
|
|
$this->$method($args[0]);
|
|
}
|
|
|
|
throw new Doctrine_Query_Exception("Unknown overload method");
|
|
}
|
|
|
|
|
|
return $this;
|
|
}
|
|
/**
|
|
* @return boolean
|
|
*/
|
|
public function isLimitSubqueryUsed() {
|
|
return $this->limitSubqueryUsed;
|
|
}
|
|
/**
|
|
* getQueryBase
|
|
* returns the base of the generated sql query
|
|
* On mysql driver special strategy has to be used for DELETE statements
|
|
*
|
|
* @return string the base of the generated sql query
|
|
*/
|
|
public function getQueryBase()
|
|
{
|
|
switch ($this->type) {
|
|
case self::DELETE:
|
|
$q = 'DELETE FROM ';
|
|
break;
|
|
case self::UPDATE:
|
|
$q = 'UPDATE ';
|
|
break;
|
|
case self::SELECT:
|
|
$distinct = ($this->isDistinct()) ? 'DISTINCT ' : '';
|
|
|
|
$q = 'SELECT '.$distinct.implode(', ', $this->parts['select']).' FROM ';
|
|
break;
|
|
}
|
|
return $q;
|
|
}
|
|
/**
|
|
* builds the sql query from the given parameters and applies things such as
|
|
* column aggregation inheritance and limit subqueries if needed
|
|
*
|
|
* @param array $params an array of prepared statement params (needed only in mysql driver
|
|
* when limit subquery algorithm is used)
|
|
* @return string the built sql query
|
|
*/
|
|
public function getQuery($params = array())
|
|
{
|
|
if(empty($this->parts["select"]) || empty($this->parts["from"]))
|
|
return false;
|
|
|
|
$needsSubQuery = false;
|
|
$subquery = '';
|
|
$k = array_keys($this->tables);
|
|
$table = $this->tables[$k[0]];
|
|
|
|
if( ! empty($this->parts['limit']) && $this->needsSubquery && $table->getAttribute(Doctrine::ATTR_QUERY_LIMIT) == Doctrine::LIMIT_RECORDS) {
|
|
$needsSubQuery = true;
|
|
$this->limitSubqueryUsed = true;
|
|
}
|
|
|
|
// process all pending SELECT part subqueries
|
|
$this->processPendingSubqueries();
|
|
|
|
// build the basic query
|
|
|
|
$str = '';
|
|
if($this->isDistinct())
|
|
$str = 'DISTINCT ';
|
|
|
|
$q = $this->getQueryBase();
|
|
|
|
$q .= $this->parts['from'];
|
|
|
|
foreach($this->parts['join'] as $parts) {
|
|
foreach($parts as $part) {
|
|
// preserve LEFT JOINs only if needed
|
|
|
|
if(substr($part, 0,9) === 'LEFT JOIN') {
|
|
$e = explode(' ', $part);
|
|
|
|
$aliases = array_merge($this->subqueryAliases,
|
|
array_keys($this->neededTables));
|
|
|
|
|
|
if( ! in_array($e[3], $aliases) &&
|
|
! in_array($e[2], $aliases) &&
|
|
|
|
! empty($this->pendingFields)) {
|
|
continue;
|
|
}
|
|
|
|
}
|
|
|
|
$e = explode(' ON ', $part);
|
|
|
|
// we can always be sure that the first join condition exists
|
|
$e2 = explode(' AND ', $e[1]);
|
|
|
|
$part = $e[0] . ' ON '
|
|
. array_shift($e2);
|
|
|
|
if( ! empty($e2)) {
|
|
$parser = new Doctrine_Query_JoinCondition($this);
|
|
$part .= ' AND ' . $parser->parse(implode(' AND ', $e2));
|
|
}
|
|
|
|
$q .= ' ' . $part;
|
|
}
|
|
}
|
|
|
|
if( ! empty($this->parts['set'])) {
|
|
$q .= ' SET ' . implode(', ', $this->parts['set']);
|
|
}
|
|
|
|
$string = $this->applyInheritance();
|
|
|
|
if( ! empty($string))
|
|
$this->parts['where'][] = '('.$string.')';
|
|
|
|
|
|
|
|
$modifyLimit = true;
|
|
if( ! empty($this->parts["limit"]) || ! empty($this->parts["offset"])) {
|
|
|
|
if($needsSubQuery) {
|
|
$subquery = $this->getLimitSubquery();
|
|
|
|
|
|
switch(strtolower($this->conn->getName())) {
|
|
case 'mysql':
|
|
// mysql doesn't support LIMIT in subqueries
|
|
$list = $this->conn->execute($subquery, $params)->fetchAll(PDO::FETCH_COLUMN);
|
|
$subquery = implode(', ', $list);
|
|
break;
|
|
case 'pgsql':
|
|
// pgsql needs special nested LIMIT subquery
|
|
$subquery = 'SELECT doctrine_subquery_alias.' . $table->getIdentifier(). ' FROM (' . $subquery . ') AS doctrine_subquery_alias';
|
|
break;
|
|
}
|
|
|
|
$field = $this->aliasHandler->getShortAlias($table->getTableName()) . '.' . $table->getIdentifier();
|
|
|
|
// only append the subquery if it actually contains something
|
|
if($subquery !== '')
|
|
array_unshift($this->parts['where'], $field. ' IN (' . $subquery . ')');
|
|
|
|
$modifyLimit = false;
|
|
}
|
|
}
|
|
|
|
$q .= ( ! empty($this->parts['where']))? ' WHERE ' . implode(' AND ', $this->parts['where']):'';
|
|
$q .= ( ! empty($this->parts['groupby']))? ' GROUP BY ' . implode(', ', $this->parts['groupby']):'';
|
|
$q .= ( ! empty($this->parts['having']))? ' HAVING ' . implode(' AND ', $this->parts['having']):'';
|
|
$q .= ( ! empty($this->parts['orderby']))? ' ORDER BY ' . implode(', ', $this->parts['orderby']):'';
|
|
|
|
if($modifyLimit)
|
|
$q = $this->conn->modifyLimitQuery($q, $this->parts['limit'], $this->parts['offset']);
|
|
|
|
// return to the previous state
|
|
if( ! empty($string))
|
|
array_pop($this->parts['where']);
|
|
if($needsSubQuery)
|
|
array_shift($this->parts['where']);
|
|
|
|
return $q;
|
|
}
|
|
/**
|
|
* getLimitSubquery
|
|
* this is method is used by the record limit algorithm
|
|
*
|
|
* when fetching one-to-many, many-to-many associated data with LIMIT clause
|
|
* an additional subquery is needed for limiting the number of returned records instead
|
|
* of limiting the number of sql result set rows
|
|
*
|
|
* @return string the limit subquery
|
|
*/
|
|
public function getLimitSubquery()
|
|
{
|
|
$k = array_keys($this->tables);
|
|
$table = $this->tables[$k[0]];
|
|
|
|
// get short alias
|
|
$alias = $this->aliasHandler->getShortAlias($table->getTableName());
|
|
$primaryKey = $alias . '.' . $table->getIdentifier();
|
|
|
|
// initialize the base of the subquery
|
|
$subquery = 'SELECT DISTINCT ' . $primaryKey;
|
|
|
|
if ($this->conn->getDBH()->getAttribute(PDO::ATTR_DRIVER_NAME) == 'pgsql') {
|
|
// pgsql needs the order by fields to be preserved in select clause
|
|
|
|
foreach ($this->parts['orderby'] as $part) {
|
|
$e = explode(' ', $part);
|
|
|
|
// don't add primarykey column (its already in the select clause)
|
|
if ($e[0] !== $primaryKey) {
|
|
$subquery .= ', ' . $e[0];
|
|
}
|
|
}
|
|
}
|
|
|
|
$subquery .= ' FROM ' . $this->conn->quoteIdentifier($table->getTableName()) . ' ' . $alias;
|
|
|
|
foreach ($this->parts['join'] as $parts) {
|
|
foreach ($parts as $part) {
|
|
// preserve LEFT JOINs only if needed
|
|
if (substr($part,0,9) === 'LEFT JOIN') {
|
|
$e = explode(' ', $part);
|
|
|
|
if ( ! in_array($e[3], $this->subqueryAliases) &&
|
|
! in_array($e[2], $this->subqueryAliases)) {
|
|
continue;
|
|
}
|
|
|
|
}
|
|
|
|
$subquery .= ' '.$part;
|
|
}
|
|
}
|
|
|
|
// all conditions must be preserved in subquery
|
|
$subquery .= ( ! empty($this->parts['where']))? ' WHERE ' . implode(' AND ', $this->parts['where']) : '';
|
|
$subquery .= ( ! empty($this->parts['groupby']))? ' GROUP BY ' . implode(', ', $this->parts['groupby']) : '';
|
|
$subquery .= ( ! empty($this->parts['having']))? ' HAVING ' . implode(' AND ', $this->parts['having']) : '';
|
|
$subquery .= ( ! empty($this->parts['orderby']))? ' ORDER BY ' . implode(', ', $this->parts['orderby']) : '';
|
|
|
|
// add driver specific limit clause
|
|
$subquery = $this->conn->modifyLimitQuery($subquery, $this->parts['limit'], $this->parts['offset']);
|
|
|
|
$parts = self::quoteExplode($subquery, ' ', "'", "'");
|
|
|
|
foreach($parts as $k => $part) {
|
|
if(strpos($part, "'") !== false) {
|
|
continue;
|
|
}
|
|
|
|
if($this->aliasHandler->hasAliasFor($part)) {
|
|
$parts[$k] = $this->aliasHandler->generateNewAlias($part);
|
|
}
|
|
|
|
if(strpos($part, '.') !== false) {
|
|
$e = explode('.', $part);
|
|
|
|
$trimmed = ltrim($e[0], '( ');
|
|
$pos = strpos($e[0], $trimmed);
|
|
|
|
$e[0] = substr($e[0], 0, $pos) . $this->aliasHandler->generateNewAlias($trimmed);
|
|
$parts[$k] = implode('.', $e);
|
|
}
|
|
}
|
|
$subquery = implode(' ', $parts);
|
|
|
|
return $subquery;
|
|
}
|
|
/**
|
|
* query the database with DQL (Doctrine Query Language)
|
|
*
|
|
* @param string $query DQL query
|
|
* @param array $params parameters
|
|
*/
|
|
public function query($query,$params = array())
|
|
{
|
|
$this->parseQuery($query);
|
|
|
|
if($this->aggregate) {
|
|
$keys = array_keys($this->tables);
|
|
$query = $this->getQuery();
|
|
$stmt = $this->tables[$keys[0]]->getConnection()->select($query, $this->parts["limit"], $this->parts["offset"]);
|
|
$data = $stmt->fetch(PDO::FETCH_ASSOC);
|
|
if(count($data) == 1) {
|
|
return current($data);
|
|
} else {
|
|
return $data;
|
|
}
|
|
} else {
|
|
return $this->execute($params);
|
|
}
|
|
}
|
|
/**
|
|
* splitQuery
|
|
* splits the given dql query into an array where keys
|
|
* represent different query part names and values are
|
|
* arrays splitted using sqlExplode method
|
|
*
|
|
* example:
|
|
*
|
|
* parameter:
|
|
* $query = "SELECT u.* FROM User u WHERE u.name LIKE ?"
|
|
* returns:
|
|
* array('select' => array('u.*'),
|
|
* 'from' => array('User', 'u'),
|
|
* 'where' => array('u.name', 'LIKE', '?'))
|
|
*
|
|
* @param string $query DQL query
|
|
* @throws Doctrine_Query_Exception if some generic parsing error occurs
|
|
* @return array an array containing the query string parts
|
|
*/
|
|
public function splitQuery($query)
|
|
{
|
|
$e = self::sqlExplode($query, ' ');
|
|
|
|
foreach($e as $k=>$part) {
|
|
$part = trim($part);
|
|
switch(strtolower($part)) {
|
|
case 'delete':
|
|
case 'update':
|
|
case 'select':
|
|
case 'set':
|
|
case 'from':
|
|
case 'where':
|
|
case 'limit':
|
|
case 'offset':
|
|
case 'having':
|
|
$p = $part;
|
|
$parts[$part] = array();
|
|
break;
|
|
case 'order':
|
|
case 'group':
|
|
$i = ($k + 1);
|
|
if(isset($e[$i]) && strtolower($e[$i]) === "by") {
|
|
$p = $part;
|
|
$parts[$part] = array();
|
|
} else
|
|
$parts[$p][] = $part;
|
|
break;
|
|
case "by":
|
|
continue;
|
|
default:
|
|
if( ! isset($p))
|
|
throw new Doctrine_Query_Exception("Couldn't parse query.");
|
|
|
|
$parts[$p][] = $part;
|
|
}
|
|
}
|
|
return $parts;
|
|
}
|
|
/**
|
|
* DQL PARSER
|
|
* parses a DQL query
|
|
* first splits the query in parts and then uses individual
|
|
* parsers for each part
|
|
*
|
|
* @param string $query DQL query
|
|
* @param boolean $clear whether or not to clear the aliases
|
|
* @throws Doctrine_Query_Exception if some generic parsing error occurs
|
|
* @return Doctrine_Query
|
|
*/
|
|
public function parseQuery($query, $clear = true)
|
|
{
|
|
if($clear)
|
|
$this->clear();
|
|
|
|
$query = trim($query);
|
|
$query = str_replace("\n", ' ', $query);
|
|
$query = str_replace("\r", ' ', $query);
|
|
|
|
$parts = $this->splitQuery($query);
|
|
|
|
foreach($parts as $k => $part) {
|
|
$part = implode(' ', $part);
|
|
switch(strtolower($k)) {
|
|
case 'create':
|
|
$this->type = self::CREATE;
|
|
break;
|
|
case 'insert':
|
|
$this->type = self::INSERT;
|
|
break;
|
|
case 'delete':
|
|
$this->type = self::DELETE;
|
|
break;
|
|
case 'select':
|
|
$this->type = self::SELECT;
|
|
$this->parseSelect($part);
|
|
break;
|
|
case 'update':
|
|
$this->type = self::UPDATE;
|
|
$k = 'FROM';
|
|
|
|
case 'from':
|
|
$class = 'Doctrine_Query_' . ucwords(strtolower($k));
|
|
$parser = new $class($this);
|
|
$parser->parse($part);
|
|
break;
|
|
case 'set':
|
|
$class = 'Doctrine_Query_' . ucwords(strtolower($k));
|
|
$parser = new $class($this);
|
|
$this->parts['set'][] = $parser->parse($part);
|
|
break;
|
|
case 'group':
|
|
case 'order':
|
|
$k .= 'by';
|
|
case 'where':
|
|
case 'having':
|
|
$class = 'Doctrine_Query_' . ucwords(strtolower($k));
|
|
$parser = new $class($this);
|
|
|
|
$name = strtolower($k);
|
|
$this->parts[$name][] = $parser->parse($part);
|
|
break;
|
|
case 'limit':
|
|
$this->parts['limit'] = trim($part);
|
|
break;
|
|
case 'offset':
|
|
$this->parts['offset'] = trim($part);
|
|
break;
|
|
}
|
|
}
|
|
|
|
return $this;
|
|
}
|
|
/**
|
|
* DQL ORDER BY PARSER
|
|
* parses the order by part of the query string
|
|
*
|
|
* @param string $str
|
|
* @return void
|
|
*/
|
|
final public function parseOrderBy($str)
|
|
{
|
|
$parser = new Doctrine_Query_Part_Orderby($this);
|
|
return $parser->parse($str);
|
|
}
|
|
/**
|
|
* generateAlias
|
|
*
|
|
* @param string $tableName
|
|
* @return string
|
|
*/
|
|
public function generateAlias($tableName)
|
|
{
|
|
if(isset($this->tableIndexes[$tableName])) {
|
|
return $tableName.++$this->tableIndexes[$tableName];
|
|
} else {
|
|
$this->tableIndexes[$tableName] = 1;
|
|
return $tableName;
|
|
}
|
|
}
|
|
|
|
public function load($path, $loadFields = true)
|
|
{
|
|
// parse custom join conditions
|
|
$e = explode(' ON ', $path);
|
|
|
|
$joinCondition = '';
|
|
|
|
if (count($e) > 1) {
|
|
$joinCondition = ' AND ' . $e[1];
|
|
$path = $e[0];
|
|
}
|
|
|
|
$tmp = explode(' ', $path);
|
|
$componentAlias = (count($tmp) > 1) ? end($tmp) : false;
|
|
|
|
$e = preg_split("/[.:]/", $tmp[0], -1);
|
|
|
|
if (isset($this->_aliasMap[$e[0]])) {
|
|
$table = $this->_aliasMap[$e[0]]['table'];
|
|
|
|
$parent = array_shift($e);
|
|
}
|
|
|
|
foreach ($e as $key => $name) {
|
|
if ( ! isset($table)) {
|
|
// process the root of the path
|
|
$table = $this->loadRoot($name, $componentAlias);
|
|
} else {
|
|
$relation = $table->getRelation($name);
|
|
$this->_aliasMap[$componentAlias] = array('parent' => $parent,
|
|
'relation' => $relation);
|
|
if( ! $relation->isOneToOne()) {
|
|
$this->needsSubquery = true;
|
|
}
|
|
|
|
$localAlias = $this->getShortAlias($parent, $table->getTableName());
|
|
$foreignAlias = $this->getShortAlias($componentAlias, $relation->getTable()->getTableName());
|
|
$aliasString = $this->conn->quoteIdentifier($table->getTableName()) . ' AS ' . $localAlias;
|
|
|
|
$map = $relation->getTable()->inheritanceMap;
|
|
|
|
if( ! $loadFields || ! empty($map) || $joinCondition) {
|
|
$this->subqueryAliases[] = $foreignAlias;
|
|
}
|
|
|
|
|
|
if ($relation instanceof Doctrine_Relation_Association) {
|
|
$asf = $relation->getAssociationFactory();
|
|
|
|
$assocTableName = $asf->getTableName();
|
|
|
|
if( ! $loadFields || ! empty($map) || $joinCondition) {
|
|
$this->subqueryAliases[] = $assocTableName;
|
|
}
|
|
|
|
$assocPath = $prevPath . '.' . $asf->getComponentName();
|
|
|
|
if (isset($this->tableAliases[$assocPath])) {
|
|
$assocAlias = $this->tableAliases[$assocPath];
|
|
} else {
|
|
$assocAlias = $this->aliasHandler->generateShortAlias($assocTableName);
|
|
}
|
|
|
|
$queryPart = 'LEFT JOIN ' . $assocTableName . ' ' . $assocAlias . ' ON ' . $foreignAlias . '.'
|
|
. $table->getIdentifier() . ' = '
|
|
. $assocAlias . '.' . $relation->getLocal();
|
|
|
|
if ($relation instanceof Doctrine_Relation_Association_Self) {
|
|
$queryPart .= ' OR ' . $localAlias . '.' . $table->getIdentifier() . ' = '
|
|
. $assocAlias . '.' . $relation->getForeign();
|
|
}
|
|
|
|
$queryPart = 'LEFT JOIN ' . $aliasString . ' ON ' . $foreignAlias . '.'
|
|
. $relation->getTable()->getIdentifier() . ' = '
|
|
. $assocAlias . '.' . $relation->getForeign()
|
|
. $joinCondition;
|
|
|
|
if ($relation instanceof Doctrine_Relation_Association_Self) {
|
|
$queryPart .= ' OR ' . $foreignTable . '.' . $table->getIdentifier() . ' = '
|
|
. $assocAlias . '.' . $relation->getLocal();
|
|
}
|
|
|
|
} else {
|
|
$queryPart = 'LEFT JOIN ' . $aliasString
|
|
. ' ON ' . $localAlias . '.'
|
|
. $relation->getLocal() . ' = ' . $foreignAlias . '.' . $relation->getForeign()
|
|
. $joinCondition;
|
|
}
|
|
$this->parts['from'][] = $queryPart;
|
|
}
|
|
if ($loadFields) {
|
|
if(isset($this->pendingFields[$componentAlias])) {
|
|
$this->processPendingFields($componentAlias);
|
|
}
|
|
if(isset($this->pendingAggregates[$componentAlias]) || isset($this->pendingAggregates[0])) {
|
|
$this->processPendingAggregates($componentAlias);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
public function loadRoot($name, $componentAlias)
|
|
{
|
|
// get the connection for the component
|
|
$this->conn = Doctrine_Manager::getInstance()
|
|
->getConnectionForComponent($name);
|
|
|
|
$table = $this->conn->getTable($name);
|
|
$tableName = $table->getTableName();
|
|
|
|
// get the short alias for this table
|
|
$tableAlias = $this->aliasHandler->getShortAlias($tableName);
|
|
// quote table name
|
|
$queryPart = $this->conn->quoteIdentifier($tableName);
|
|
|
|
if ($this->type === self::SELECT) {
|
|
$queryPart .= ' ' . $tableAlias;
|
|
}
|
|
|
|
$this->parts['from'][] = $queryPart;
|
|
$this->tableAliases[$tableAlias] = $componentAlias;
|
|
$this->_aliasMap[$componentAlias] = array('table' => $table);
|
|
|
|
return $table;
|
|
}
|
|
/**
|
|
* getShortAlias
|
|
* some database such as Oracle need the identifier lengths to be < ~30 chars
|
|
* hence Doctrine creates as short identifier aliases as possible
|
|
*
|
|
* this method is used for the creation of short table aliases, its also
|
|
* smart enough to check if an alias already exists for given component (componentAlias)
|
|
*
|
|
* @param string $componentAlias the alias for the query component to search table alias for
|
|
* @param string $tableName the table name from which the table alias is being created
|
|
* @return string the generated / fetched short alias
|
|
*/
|
|
public function getShortAlias($componentAlias, $tableName)
|
|
{
|
|
if (isset($this->tableAliases[$componentAlias])) {
|
|
return $this->tableAliases[$componentAlias];
|
|
}
|
|
|
|
return $this->aliasHandler->getShortAlias($tableName);
|
|
}
|
|
}
|
|
|