public class DelegatePerTargetObjectIntroductionInterceptor extends IntroductionInfoSupport implements IntroductionInterceptor
IntroductionInterceptor
interface.
This differs from DelegatingIntroductionInterceptor
in that a single
instance of this class can be used to advise multiple target objects, and each target
object will have its own delegate (whereas DelegatingIntroductionInterceptor
shares the same delegate, and hence the same state across all targets).
The suppressInterface
method can be used to suppress interfaces
implemented by the delegate class but which should not be introduced to the
owning AOP proxy.
An instance of this class is serializable if the delegates are.
Note: There are some implementation similarities between this class and
DelegatingIntroductionInterceptor
that suggest a possible refactoring
to extract a common ancestor class in the future.
IntroductionInfoSupport.suppressInterface(java.lang.Class<?>)
,
DelegatingIntroductionInterceptor
,
Serialized FormpublishedInterfaces
Constructor and Description |
---|
DelegatePerTargetObjectIntroductionInterceptor(Class<?> defaultImplType,
Class<?> interfaceType) |
Modifier and Type | Method and Description |
---|---|
protected Object |
doProceed(MethodInvocation mi)
Proceed with the supplied
MethodInterceptor . |
Object |
invoke(MethodInvocation mi)
Subclasses may need to override this if they want to perform custom
behaviour in around advice.
|
getInterfaces, implementInterfacesOnObject, implementsInterface, isMethodOnIntroducedInterface, suppressInterface
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
implementsInterface
@Nullable public Object invoke(MethodInvocation mi) throws Throwable
invoke
in interface MethodInterceptor
mi
- the method invocation joinpointJoinpoint.proceed()
;
might be intercepted by the interceptorThrowable
- if the interceptors or the target object
throws an exception@Nullable protected Object doProceed(MethodInvocation mi) throws Throwable
MethodInterceptor
.
Subclasses can override this method to intercept method invocations on the
target object which is useful when an introduction needs to monitor the object
that it is introduced into. This method is never called for
MethodInvocations
on the introduced interfaces.Throwable