| BinaryEvaluatedTC | This interface represent a result of a Medor Query. |
| ConnectionResources | This interface represents ressources required by a Medor Query in order to be
evaluated. |
| EvaluationMetaData | This interface is used for QueryTrees which can be optimized. |
| NodeEvaluator | This interface defines the controller object for the evaluation of a given
QueryNode within a QueryTree. |
| NodeEvaluatorFactory | This interface creates the controller object for the evaluation of a given
QueryNode within a QueryTree. |
| QueryEvaluator | This interface represents the MEDOR evaluator. |