javax.xml.ws.spi
Class Invoker

java.lang.Object
  javax.xml.ws.spi.Invoker

public abstract class Invoker
extends java.lang.Object

Invoker hides the detail of calling into application endpoint implementation. Container hands over an implementation of Invoker to JAX-WS runtime, and jax-ws runtime calls invoke(java.lang.reflect.Method, java.lang.Object...) for a web service invocation. Finally, Invoker does the actual invocation of web service on endpoint instance. Container also injects the provided WebServiceContext and takes care of invoking javax.annotation.PostConstruct methods, if present, on the endpoint implementation.

Since:

JAX-WS 2.2

Author:

Jitendra Kotamraju

See Also:

Provider#createEndpoint(String, Class, Invoker, WebServiceFeature...)

Constructor Summary

Invoker()

Method Summary

abstract void	inject(WebServiceContext webServiceContext) JAX-WS runtimes calls this method to ask container to inject WebServiceContext on the endpoint instance.
abstract java.lang.Object	invoke(java.lang.reflect.Method m, java.lang.Object... args) JAX-WS runtime calls this method to do the actual web service invocation on endpoint instance.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Invoker

public Invoker()

Method Detail

inject

public abstract void inject(WebServiceContext webServiceContext)
                     throws java.lang.IllegalAccessException,
                            java.lang.IllegalArgumentException,
                            java.lang.reflect.InvocationTargetException

JAX-WS runtimes calls this method to ask container to inject WebServiceContext on the endpoint instance. The WebServiceContext object uses thread-local information to return the correct information during the actual endpoint invocation regardless of how many threads are concurrently being used to serve requests.

Parameters:

webServiceContext - a holder for MessageContext

Throws:

java.lang.IllegalAccessException - if the injection done by reflection API throws this exception

java.lang.IllegalArgumentException - if the injection done by reflection API throws this exception

java.lang.reflect.InvocationTargetException - if the injection done by reflection API throws this exception

invoke

public abstract java.lang.Object invoke(java.lang.reflect.Method m,
                                        java.lang.Object... args)
                                 throws java.lang.IllegalAccessException,
                                        java.lang.IllegalArgumentException,
                                        java.lang.reflect.InvocationTargetException

JAX-WS runtime calls this method to do the actual web service invocation on endpoint instance. The injected WebServiceContext.getMessageContext() gives the correct information for this invocation.

Parameters:

m - Method to be invoked on the service

args - Method arguments

Returns:

return value of the method

Throws:

java.lang.IllegalAccessException - if the invocation done by reflection API throws this exception

java.lang.IllegalArgumentException - if the invocation done by reflection API throws this exception

java.lang.reflect.InvocationTargetException - if the invocation done by reflection API throws this exception

See Also:

Method.invoke(java.lang.Object, java.lang.Object...)