102 lines
2.9 KiB
PHP
102 lines
2.9 KiB
PHP
<?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.phpdoctrine.com>.
|
|
*/
|
|
Doctrine::autoload('Doctrine_Connection_Module');
|
|
/**
|
|
* Doctrine_Expression
|
|
*
|
|
* @package Doctrine
|
|
* @subpackage Expression
|
|
* @license http://www.opensource.org/licenses/lgpl-license.php LGPL
|
|
* @link www.phpdoctrine.com
|
|
* @since 1.0
|
|
* @version $Revision$
|
|
* @author Konsta Vesterinen <kvesteri@cc.hut.fi>
|
|
*/
|
|
class Doctrine_Expression
|
|
{
|
|
protected $_expression;
|
|
|
|
protected $_conn;
|
|
|
|
public function __construct($expr, $conn = null)
|
|
{
|
|
$this->setExpression($expr);
|
|
|
|
if ($conn !== null) {
|
|
$this->_conn = $conn;
|
|
}
|
|
}
|
|
|
|
public function getConnection()
|
|
{
|
|
if ( ! isset($this->_conn)) {
|
|
return Doctrine_Manager::connection();
|
|
}
|
|
|
|
return $this->_conn;
|
|
}
|
|
|
|
public function setExpression($clause)
|
|
{
|
|
$this->_expression = $this->parseClause($clause);
|
|
}
|
|
|
|
public function parseExpression($expr)
|
|
{
|
|
$pos = strpos($expr, '(');
|
|
if ($pos === false) {
|
|
return $expr;
|
|
}
|
|
|
|
// get the name of the function
|
|
$name = substr($expr, 0, $pos);
|
|
$argStr = substr($expr, ($pos + 1), -1);
|
|
|
|
// parse args
|
|
foreach (Doctrine_Tokenizer::bracketExplode($argStr, ',') as $arg) {
|
|
$args[] = $this->parseClause($arg);
|
|
}
|
|
|
|
return call_user_func_array(array($this->getConnection()->expression, $name), $args);
|
|
}
|
|
|
|
public function parseClause($clause)
|
|
{
|
|
$e = Doctrine_Tokenizer::bracketExplode($clause, ' ');
|
|
|
|
foreach ($e as $k => $expr) {
|
|
$e[$k] = $this->parseExpression($expr);
|
|
}
|
|
|
|
return implode(' ', $e);
|
|
}
|
|
|
|
public function getSql()
|
|
{
|
|
|
|
return $this->_expression;
|
|
}
|
|
|
|
public function __toString()
|
|
{
|
|
return $this->getSql();
|
|
}
|
|
} |