Invalid query in case if complex key given.

[adyshev]

Please take a look to Query.php:
18f1d30

In case if complex key given (like ["Some.Name.Space","someField","Some value"]) in array() format invalid query will be generated (query with "keys=" parameter - should be "key=").

My suggestion is to remove execution redirection in "setKey" to "setKeys" method in case if Array given.

public function setKey($val)

To remove:
if (is_array($val)) {
return $this->setKeys($val);
}
....
}

such kind of keys are used in Doctrine couchdb-odm bundle for internal view-based searching mechanism.