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;
}
/**
* Hydrates resultSet
*
* @param type $stmt Statement
*
* @return DomDocument the query results.
*/
public function hydrateResultSet($stmt)
{
$array = parent::hydrateResultSet($stmt);
return $this->arrayToXml($array);
}