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<?php
/**
* SelectExpressionBuilder.php
*
* Builds simple expressions within a SELECT statement.
*
* PHP version 5
*
* LICENSE:
* Copyright (c) 2010-2014 Justin Swanhart and André Rothe
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
*
* @author André Rothe <andre.rothe@phosco.info>
* @copyright 2010-2014 Justin Swanhart and André Rothe
* @license http://www.debian.org/misc/bsd.license BSD License (3 Clause)
* @version SVN: $Id: SelectExpressionBuilder.php 830 2013-12-18 09:35:42Z phosco@gmx.de $
*
*/
require_once dirname(__FILE__) . '/SubTreeBuilder.php';
require_once dirname(__FILE__) . '/AliasBuilder.php';
require_once dirname(__FILE__) . '/../utils/ExpressionType.php';
/**
* This class implements the builder for simple expressions within a SELECT statement.
* You can overwrite all functions to achieve another handling.
*
* @author André Rothe <andre.rothe@phosco.info>
* @license http://www.debian.org/misc/bsd.license BSD License (3 Clause)
*
*/
class SelectExpressionBuilder {
protected function buildSubTree($parsed, $delim) {
$builder = new SubTreeBuilder();
return $builder->build($parsed, $delim);
}
protected function buildAlias($parsed) {
$builder = new AliasBuilder();
return $builder->build($parsed);
}
public function build($parsed) {
if ($parsed['expr_type'] !== ExpressionType::EXPRESSION) {
return "";
}
$sql = $this->buildSubTree($parsed, " ");
$sql .= $this->buildAlias($parsed);
return $sql;
}
}
?>
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