public static function down(DAOConnected $object, LogicalObject $exp = null)
{
$getMethod = 'get' . ucfirst(self::$property);
Assert::isTrue(method_exists($object, $getMethod));
$oldPosition = $object->{$getMethod}();
$criteria = Criteria::create($object->dao())->add(Expression::gt(self::$property, $oldPosition))->addOrder(OrderBy::create(self::$property)->asc())->setLimit(1);
if ($exp) {
$criteria->add($exp);
}
if ($lowerObject = $criteria->get()) {
DaoUtils::setNullValue(self::$nullValue);
DaoUtils::swap($lowerObject, $object, self::$property);
}
}
private function loadNextChunk($id)
{
Assert::isNotNull($this->dao);
$this->offset = 0;
$criteria = Criteria::create($this->dao);
if ($this->projection) {
$criteria->setProjection($this->projection);
}
$criteria->addOrder($this->keyProperty)->setLimit($this->chunkSize);
if ($id !== null) {
$criteria->add(Expression::gt($this->keyProperty, $id));
}
// preserving memory bloat
$this->dao->dropIdentityMap();
$this->chunk = $criteria->getList();
return $this->chunk;
}
