org.eclipse.gemini.blueprint.service.importer.support.internal.aop

Class ServiceInvoker

java.lang.Object

org.eclipse.gemini.blueprint.service.importer.support.internal.aop.ServiceInvoker

All Implemented Interfaces:

org.aopalliance.aop.Advice, org.aopalliance.intercept.Interceptor, org.aopalliance.intercept.MethodInterceptor, ServiceReferenceProvider, org.springframework.beans.factory.DisposableBean

Direct Known Subclasses:

ServiceDynamicInterceptor, ServiceStaticInterceptor

public abstract class ServiceInvoker
extends Object
implements org.aopalliance.intercept.MethodInterceptor, ServiceReferenceProvider, org.springframework.beans.factory.DisposableBean

Around interceptor for OSGi service invokers. Uses method invocation to execute the call.

A TargetSource can be used though it doesn't offer localized exceptions (unless information is passed around). The biggest difference as opposed to a target source is that mixins call do not require a service behind. However, in the future, this interceptor might be replaced with a TargetSource.

Author:

Costin Leau

Field Summary

Fields

Modifier and Type	Field and Description
protected org.apache.commons.logging.Log	log

Constructor Summary

Constructors

Constructor and Description
ServiceInvoker()

Method Summary

Methods

Modifier and Type	Method and Description
abstract void	destroy()
protected Object	doInvoke(Object service, org.aopalliance.intercept.MethodInvocation invocation) Actual invocation - the class is being executed on a different object then the one exposed in the invocation object.
org.osgi.framework.ServiceReference	getServiceReference() Convenience method exposing the target (OSGi service) reference so that subinterceptors can access it.
protected abstract Object	getTarget() Determine the target object to execute the invocation upon.
Object	invoke(org.aopalliance.intercept.MethodInvocation invocation)

Methods inherited from class java.lang.Object

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

Field Detail

log

protected final transient org.apache.commons.logging.Log log

Constructor Detail

ServiceInvoker

public ServiceInvoker()

Method Detail

doInvoke

protected Object doInvoke(Object service,
              org.aopalliance.intercept.MethodInvocation invocation)
                   throws Throwable

Actual invocation - the class is being executed on a different object then the one exposed in the invocation object.

Parameters:

service -

invocation -

Returns:

Throws:

Throwable

invoke

public final Object invoke(org.aopalliance.intercept.MethodInvocation invocation)
                    throws Throwable

Specified by:

invoke in interface org.aopalliance.intercept.MethodInterceptor

Throws:

Throwable

getTarget

protected abstract Object getTarget()

Determine the target object to execute the invocation upon.

Returns:

Throws:

Throwable

getServiceReference

public org.osgi.framework.ServiceReference getServiceReference()

Convenience method exposing the target (OSGi service) reference so that subinterceptors can access it. By default, returns null.

Specified by:

getServiceReference in interface ServiceReferenceProvider

Returns:

destroy

public abstract void destroy()

Specified by:

destroy in interface org.springframework.beans.factory.DisposableBean