Fuse ESB - Developing Apache CXF Interceptors

Front-Ends

Table B.2 lists the interceptors added to a JAX-WS endpoint's inbound message chain.

Table B.2. Inbound JAX-WS interceptors

Class	Phase	Description
`HolderInInterceptor`	`PRE_INVOKE`	Creates holder objects for any out or in/out parameters in the message.
`WrapperClassInInterceptor`	`POST_LOGICAL`	Unwraps the parts of a wrapped doc/literal message into the appropriate array of objects.
`LogicalHandlerInInterceptor`	`PRE_PROTOCOL`	Passes message processing to the JAX-WS logical handlers used by the endpoint. When the JAX-WS handlers complete, the message is passed along to the next interceptor on the inbound chain.
`SOAPHandlerInterceptor`	`PRE_PROTOCOL`	Passes message processing to the JAX-WS SOAP handlers used by the endpoint. When the SOAP handlers finish with the message, the message is passed along to the next interceptor in the chain.

Table B.3 lists the interceptors added to a JAX-WS endpoint's outbound message chain.

Table B.3. Outbound JAX-WS interceptors

Class	Phase	Description
`HolderOutInterceptor`	`PRE_LOGICAL`	Removes the values of any out and in/out parameters from their holder objects and adds the values to the message's parameter list.
`WebFaultOutInterceptor`	`PRE_PROTOCOL`	Processes outbound fault messages.
`WrapperClassOutInterceptor`	`PRE_LOGICAL`	Makes sure that wrapped doc/literal messages and rpc/literal messages are properly wrapped before being added to the message.
`LogicalHandlerOutInterceptor`	`PRE_MARSHAL`	Passes message processing to the JAX-WS logical handlers used by the endpoint. When the JAX-WS handlers complete, the message is passed along to the next interceptor on the outbound chain.
`SOAPHandlerInterceptor`	`PRE_PROTOCOL`	Passes message processing to the JAX-WS SOAP handlers used by the endpoint. When the SOAP handlers finish processing the message, it is passed along to the next interceptor in the chain.
`MessageSenderInterceptor`	`PREPARE_SEND`	Calls back to the Destination object to have it setup the output streams, headers, etc. to prepare the outgoing transport.

Table B.4 lists the interceptors added to a JAX-RS endpoint's inbound message chain.

Table B.4. Inbound JAX-RS interceptors

Class	Phase	Description
`JAXRSInInterceptor`	`PRE_STREAM`	Selects the root resource class, invokes any configured JAX-RS request filters, and determines the method to invoke on the root resource.

	Important
	The inbound chain for a JAX-RS endpoint skips straight to the `ServiceInvokerInInterceptor` interceptor. No other interceptors will be invoked after the `JAXRSInInterceptor`.

Table B.5 lists the interceptors added to a JAX-RS endpoint's outbound message chain.

Table B.5. Outbound JAX-RS interceptors

Class	Phase	Description
`JAXRSOutInterceptor`	`MARSHAL`	Marshals the response into the proper format for transmission.