org.springframework.aop.support
Class DelegatingIntroductionInterceptor

public class DelegatingIntroductionInterceptor

implements IntroductionInterceptor

Convenient implementation of the IntroductionInterceptor interface.
Subclasses merely need to extend this class and implement the interfaces to be introduced themselves. In this case the delegate is the subclass instance itself. Alternatively a separate delegate may implement the interface, and be set via the delegate bean property. Delegates or subclasses may implement any number of interfaces. All interfaces except IntroductionInterceptor are picked up from the subclass or delegate by default.
The suppressInterface() method can be used to suppress interfaces implemented by the delegate but which should not be introduced to the owning AOP proxy.

Author:

Rod Johnson

Version: $Id: DelegatingIntroductionInterceptor.java,v 1.1 2003/11/16 12:54:58 johnsonr Exp $

public DelegatingIntroductionInterceptor(Object delegate)

Construct a new DelegatingIntroductionInterceptor, providing a delegate that implements the interfaces to be introduced.

Parameters:

delegate - the delegate that implements the introduced interfaces

public Class[] getIntroducedInterfaces()

public boolean implementsInterface(Class intf)

See Also:

org.springframework.aop.IntroductionInterceptor.implementsInterface(java.lang.Class)

public Object invoke(MethodInvocation mi)
               throws java.lang.Throwable

Subclasses may need to override this if they want to perform custom behaviour in around advice. However, subclasses should invoke this method, which handles introduced interfaces and forwarding to the target.

public void suppressInterface(Class intf)

Suppress the specified interface, which will have been autodetected due to its implementation by the delegate. Does nothing if it's not implemented by the delegate

Parameters:

intf - interface to suppress

Association Links

to Class java.util.Set

Set of Class