Interface Summary
QueryObserver Interface to be implemented by observers which are interested on notifications of ContextQuery's state changes.

Class Summary
ActionQuery This class is used with the ContextProcessors to create ContextQuerys which listen on occurrence of ContextEvents with a specific ContextEventType that require handling of their CurrentAction.
ContextQuery This class is used by the ContextListeners to tell on which ContextEvents the listeners are interested in.
ProcessedEventQuery This class is used with the ContextListeners to create queries which listen on occurrence of processed events (i.e.

Enum Summary
QueryState The states of a ContextQuery.

Exception Summary
QueryDestroyedException Exception when a destroyed ContextQuery is used.

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