Module jakarta.xml.ws

Package jakarta.xml.ws.spi

Class Invoker

java.lang.Object

jakarta.xml.ws.spi.Invoker

public abstract class Invoker
extends Object

Invoker hides the detail of calling into application endpoint implementation. Container hands over an implementation of Invoker to Jakarta XML Web Services runtime, and Jakarta XML Web Services 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 jakarta.annotation.PostConstruct methods, if present, on the endpoint implementation.

Author:

Jitendra Kotamraju

See Also:

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

Constructor Summary

Constructors

Constructor	Description
Invoker()

Method Summary

Modifier and Type	Method	Description
abstract void	inject(WebServiceContext webServiceContext)	Jakarta XML Web Services runtimes calls this method to ask container to inject WebServiceContext on the endpoint instance.
abstract Object	invoke(Method m, Object... args)	Jakarta XML Web Services 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 Details

Invoker

public Invoker()

Method Details

inject

public abstract void inject(WebServiceContext webServiceContext)
                     throws IllegalAccessException,
IllegalArgumentException,
InvocationTargetException

Jakarta XML Web Services 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:

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

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

InvocationTargetException - if the injection done by reflection API throws this exception

invoke

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

Jakarta XML Web Services 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:

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

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

InvocationTargetException - if the invocation done by reflection API throws this exception

See Also:

• Method.invoke(Object, Object...)