Rudder

This can be reproduced with test:

    val q3 = TestQuery(
      "q3", // select no nodes because that property name doesn't exists
      parser(""" 
      { "select":"node", "composition" : "Or", "where":[
        { "objectType":"serializedNodeProperty", "attribute":"name.value", "comparator":"hasKey", "value":"No node with that prop" }
      ] }
      """).openOrThrowException("For tests"),
      Nil)
// fail: returns all nodes