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<?php
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/*
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* $Id: Complex.php 7490 2010-03-29 19:53:27Z jwage $
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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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/**
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* Doctrine_Hook_Parser_Complex
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*
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* @package Doctrine
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* @subpackage Hook
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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: 7490 $
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* @author Konsta Vesterinen <kvesteri@cc.hut.fi>
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*/
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abstract class Doctrine_Hook_Parser_Complex extends Doctrine_Hook_Parser
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{
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protected $_tokenizer;
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/**
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* Constructor.
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*/
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public function __construct()
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{
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$this->_tokenizer = new Doctrine_Query_Tokenizer();
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}
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/**
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* parse
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* Parses given field and field value to DQL condition
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* and parameters. This method should always return
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* prepared statement conditions (conditions that use
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* placeholders instead of literal values).
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*
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* @param string $alias component alias
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* @param string $field the field name
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* @param mixed $value the value of the field
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* @return void
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*/
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public function parse($alias, $field, $value)
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{
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$this->condition = $this->parseClause($alias, $field, $value);
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}
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/**
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* parseClause
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*
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* @param string $alias component alias
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* @param string $field the field name
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* @param mixed $value the value of the field
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* @return void
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*/
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public function parseClause($alias, $field, $value)
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{
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$parts = $this->_tokenizer->quoteExplode($value, ' AND ');
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if (count($parts) > 1) {
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$ret = array();
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foreach ($parts as $part) {
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$ret[] = $this->parseSingle($alias, $field, $part);
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}
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$r = implode(' AND ', $ret);
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} else {
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$parts = $this->_tokenizer->quoteExplode($value, ' OR ');
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if (count($parts) > 1) {
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$ret = array();
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foreach ($parts as $part) {
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$ret[] = $this->parseClause($alias, $field, $part);
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}
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$r = implode(' OR ', $ret);
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} else {
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$ret = $this->parseSingle($alias, $field, $parts[0]);
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return $ret;
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}
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}
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return '(' . $r . ')';
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}
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/**
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* parseSingle
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*
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* @param string $alias component alias
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* @param string $field the field name
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* @param mixed $value the value of the field
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* @return void
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*/
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abstract public function parseSingle($alias, $field, $value);
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}
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