64 lines
2.3 KiB
PHP
64 lines
2.3 KiB
PHP
<?php
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/**
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* DeleteProcessor.php
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*
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* This file implements the processor for the DELETE statements.
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*
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* Copyright (c) 2010-2012, Justin Swanhart
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* with contributions by André Rothe <arothe@phosco.info, phosco@gmx.de>
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*
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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*
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* * Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
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* SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
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* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
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* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
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* DAMAGE.
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*/
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require_once(dirname(__FILE__) . '/AbstractProcessor.php');
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/**
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*
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* This class processes the DELETE statements.
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*
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* @author arothe
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*
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*/
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class DeleteProcessor extends AbstractProcessor {
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public function process($tokens) {
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$tables = array();
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$del = $tokens['DELETE'];
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foreach ($tokens['DELETE'] as $expression) {
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if ($expression !== 'DELETE' && trim($expression, ' .*') !== "" && !$this->isCommaToken($expression)) {
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$tables[] = trim($expression, '.* ');
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}
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}
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if (empty($tables)) {
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foreach ($tokens['FROM'] as $table) {
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$tables[] = $table['table'];
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}
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}
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$tokens['DELETE'] = array('TABLES' => $tables);
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return $tokens;
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}
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}
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?>
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