Package org.apache.excalibur.event

Interface Summary
DequeueInterceptor The dequeue executable interface describes operations that are executed before and after elements are pulled from a queue.
EnqueuePredicate Enqueue predicates allow users to specify a method that will 'screen' elements being enqueued onto a sink, either accepting or rejecting them.
EventHandler An EventHandler takes care of processing specific events in an event-based architecture.
Message A Source implements the side of an event queue where queue elements are dequeued operations only.
PreparedEnqueue A PreparedEnqueue is an object returned from a prepareEnqueue method that allows you to either commit or abort the enqueue operation.
Queue A Source implements the side of an event queue where QueueElements are dequeued operations only.
Signal A Signal is a specific type of queue element that denotes a Control code for the Queue system.
Sink A Sink implements the end of a finite-length event queue where elements are enqueued.
Source A Source implements the side of an event queue where QueueElements are dequeued operations only.
 

Exception Summary
SinkClosedException A SinkClosedException is thrown when an enqueue operation occurs on a queue that is already closed.
SinkException A SourceException is thrown when an enqueue operation fails.
SinkFullException A SinkException is thrown when an enqueue operation occurs on a queue that is already full.
 



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