/**
* Prepares a query expression.
*
* @param array|object $expression
* @param ClassMetadata $class
* @return array
*/
private function prepareQueryExpression($expression, $class)
{
foreach ($expression as $k => $v) {
// Ignore query operators whose arguments need no type conversion
if (in_array($k, array('$exists', '$type', '$mod', '$size'))) {
continue;
}
// Process query operators whose argument arrays need type conversion
if (in_array($k, array('$in', '$nin', '$all')) && is_array($v)) {
foreach ($v as $k2 => $v2) {
$expression[$k][$k2] = $class->getDatabaseIdentifierValue($v2);
}
continue;
}
// Recursively process expressions within a $not operator
if ($k === '$not' && is_array($v)) {
$expression[$k] = $this->prepareQueryExpression($v, $class);
continue;
}
$expression[$k] = $class->getDatabaseIdentifierValue($v);
}
return $expression;
}
/**
* INTERNAL:
* Tries to get a document by its identifier hash. If no document is found
* for the given hash, FALSE is returned.
*
* @ignore
* @param mixed $id Document identifier
* @param ClassMetadata $class Document class
* @return mixed The found document or FALSE.
* @throws InvalidArgumentException if the class does not have an identifier
*/
public function tryGetById($id, ClassMetadata $class)
{
if (!$class->identifier) {
throw new \InvalidArgumentException(sprintf('Class "%s" does not have an identifier', $class->name));
}
$serializedId = serialize($class->getDatabaseIdentifierValue($id));
return isset($this->identityMap[$class->name][$serializedId]) ? $this->identityMap[$class->name][$serializedId] : false;
}