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<?php
/*
* $Id: From.php 5798 2009-06-02 15:10:46Z piccoloprincipe $
*
* 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.org>.
*/
/**
* Doctrine_Query_From
*
* @package Doctrine
* @subpackage Query
* @license http://www.opensource.org/licenses/lgpl-license.php LGPL
* @link www.phpdoctrine.org
* @since 1.0
* @version $Revision: 5798 $
* @author Konsta Vesterinen <kvesteri@cc.hut.fi>
*/
class Doctrine_Query_From extends Doctrine_Query_Part
{
/**
* DQL FROM PARSER
* parses the FROM part of the query string
*
* @param string $str
* @param boolean $return if to return the parsed FROM and skip load()
* @return void
*/
public function parse($str, $return = false)
{
$str = trim($str);
$parts = $this->_tokenizer->bracketExplode($str, 'JOIN');
$from = $return ? array() : null;
$operator = false;
switch (trim($parts[0])) {
case 'INNER':
$operator = ':';
case 'LEFT':
array_shift($parts);
break;
}
$last = '';
foreach ($parts as $k => $part) {
$part = trim($part);
if (empty($part)) {
continue;
}
$e = explode(' ', $part);
if (end($e) == 'INNER' || end($e) == 'LEFT') {
$last = array_pop($e);
}
$part = implode(' ', $e);
foreach ($this->_tokenizer->bracketExplode($part, ',') as $reference) {
$reference = trim($reference);
$e = explode(' ', $reference);
$e2 = explode('.', $e[0]);
if ($operator) {
$e[0] = array_shift($e2) . $operator . implode('.', $e2);
}
if ($return) {
$from[] = $e;
} else {
$table = $this->query->load(implode(' ', $e));
}
}
$operator = ($last == 'INNER') ? ':' : '.';
}
return $from;
}
}
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