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<?php
/*
* $Id: ArrayHierarchyDriver.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>.
*/
/**
* Builds result sets in to the hierarchy graph using php arrays
*
* @package Doctrine
* @subpackage Hydrate
* @license http://www.opensource.org/licenses/lgpl-license.php LGPL
* @link www.doctrine-project.org
* @since 1.2
* @version $Revision$
* @author Guilherme Blanco <guilhermeblanco@hotmail.com>
*/
class Doctrine_Hydrator_ArrayHierarchyDriver extends Doctrine_Hydrator_ArrayDriver
{
public function hydrateResultSet($stmt)
{
$collection = parent::hydrateResultSet($stmt);
$table = $this->getRootComponent();
if ( ! $table->isTree() || ! $table->hasColumn('level')) {
throw new Doctrine_Exception('Cannot hydrate model that does not implements Tree behavior with `level` column');
}
// Trees mapped
$trees = array();
$l = 0;
if (count($collection) > 0) {
// Node Stack. Used to help building the hierarchy
$stack = array();
foreach ($collection as $child) {
$item = $child;
$item['__children'] = array();
// Number of stack items
$l = count($stack);
// Check if we're dealing with different levels
while($l > 0 && $stack[$l - 1]['level'] >= $item['level']) {
array_pop($stack);
$l--;
}
// Stack is empty (we are inspecting the root)
if ($l == 0) {
// Assigning the root child
$i = count($trees);
$trees[$i] = $item;
$stack[] = & $trees[$i];
} else {
// Add child to parent
$i = count($stack[$l - 1]['__children']);
$stack[$l - 1]['__children'][$i] = $item;
$stack[] = & $stack[$l - 1]['__children'][$i];
}
}
}
return $trees;
}
}