44.2. How to Implement a Component

Implement the Component interface—A component object acts as an endpoint factory. You extend the DefaultComponent class and implement the createEndpoint() method.

See Chapter 45, Component Interface.

Implement the Endpoint interface—An endpoint represents a resource identified by a specific URI. The approach taken when implementing an endpoint depends on whether the consumers follow an event-driven pattern, a scheduled poll pattern, or a polling pattern.

For an event-driven pattern, implement the endpoint by extending the DefaultEndpoint class and implementing the following methods:

For a scheduled poll pattern, implement the endpoint by extending the ScheduledPollEndpoint class and implementing the following methods:

For a polling pattern, implement the endpoint by extending the DefaultPollingEndpoint class and implementing the following methods:

See Chapter 46, Endpoint Interface.

Implement the Consumer interface—There are several different approaches you can take to implementing a consumer, depending on which pattern you need to implement (event-driven, scheduled poll, or polling). The consumer implementation is also crucially important for determining the threading model used for processing a message exchange.

See Section 47.2, “Implementing the Consumer Interface”.

Implement the Producer interface—To implement a producer, you extend the DefaultProducer class and implement the process() method.

See Chapter 48, Producer Interface.

Optionally implement the Exchange or the Message interface—The default implementations of Exchange and Message can be used directly, but occasionally, you might find it necessary to customize these types.

See Chapter 49, Exchange Interface and Chapter 50, Message Interface.