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<?php
/*
* $Id: Having.php 10831 2013-05-29 19:32:17Z btowles $
*
* 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.doctrine-project.org>.
*/
/**
* Doctrine_Query_Having
*
* @package Doctrine
* @subpackage Query
* @license http://www.opensource.org/licenses/lgpl-license.php LGPL
* @link www.doctrine-project.org
* @since 1.0
* @version $Revision: 7666 $
* @author Konsta Vesterinen <kvesteri@cc.hut.fi>
*/
class Doctrine_Query_Having extends Doctrine_Query_Condition
{
/**
* DQL Aggregate Function parser
*
* @param string $func
* @return mixed
*/
private function parseAggregateFunction($func)
{
$pos = strpos($func, '(');
// Check for subqueries
if ($pos === 0 && substr($func, 1, 6) == 'SELECT') {
// This code is taken from WHERE.php
$sub = $this->_tokenizer->bracketTrim($func);
$q = $this->query->createSubquery()->parseDqlQuery($sub, false);
$sql = $q->getSqlQuery();
$q->free();
return '(' . $sql . ')';
}
if ($pos !== false) {
$funcs = array();
$name = substr($func, 0, $pos);
$func = substr($func, ($pos + 1), -1);
$params = $this->_tokenizer->bracketExplode($func, ',', '(', ')');
foreach ($params as $k => $param) {
$params[$k] = $this->parseAggregateFunction($param);
}
$funcs = $name . '(' . implode(', ', $params) . ')';
return $funcs;
} else {
return $this->_parseAliases($func);
}
}
/**
* _parseAliases
* Processes part of the query not being an aggregate function
*
* @param mixed $value
* @return string
*/
final private function _parseAliases($value)
{
if ( ! is_numeric($value)) {
$a = explode('.', $value);
if (count($a) > 1) {
$field = array_pop($a);
$ref = implode('.', $a);
$map = $this->query->load($ref, false);
$field = $map['table']->getColumnName($field);
$value = $this->query->getConnection()->quoteIdentifier($this->query->getSqlTableAlias($ref) . '.' . $field);
} else {
$field = end($a);
if ($this->query->hasSqlAggregateAlias($field)) {
$value = $this->query->getSqlAggregateAlias($field);
}
}
}
return $value;
}
/**
* load
* returns the parsed query part
*
* @param string $having
* @return string
*/
final public function load($having)
{
$tokens = $this->_tokenizer->bracketExplode($having, ' ', '(', ')');
$part = $this->parseAggregateFunction(array_shift($tokens));
$operator = array_shift($tokens);
$value = implode(' ', $tokens);
// check the RHS for aggregate functions
$value = $this->parseAggregateFunction($value);
$part .= ' ' . $operator . ' ' . $value;
return $part;
}
}