com.sapportals.wcm.crt.component

Interface IProxy

All Superinterfaces:

IContextualizable, InvocationHandler

public interface IProxy

extends IContextualizable, InvocationHandler

An interface to mark a component as a proxy.

A proxy component processes a component's method invocations. invoke will be invoked on a proxy when a method is invoked on a component instance that it is associated with.

Proxies could implement invoke like in the following example:

 public Object invoke( Object proxy, Method m, Object[] args ) throws Throwable {
   Object result = null;

   try {
     ....preInvoke
     // call the method
     result = m.invoke( component, args );

   } catch( InvocationTargetException e ) {
     throw e.getTargetException();
   } catch( Exception e ) {
     getCategory().error( e.getMessage(), e );
     throw new RuntimeException( "unexpected invocation exception: " + e.getMessage() );
   } finally {
     ....postInvoke
   }
   return result;
 }
 

A proxy-armed component could be added during configuration time like in the following code example:

 DefaultConfiguration component = new DefaultConfiguration( IConfigConst.ELEMENTS.COMPONENT );
 component.setAttribute( IConfigConst.ATTRIBUTES.COMPONENT_CLASS, SomeComponent.class.getName() );
 component.setAttribute( IConfigConst.ATTRIBUTES.COMPONENT_KEY, "someKey" );
 component.setAttribute( IConfigConst.ATTRIBUTES.COMPONENT_PROXY, ProxyComponent.class.getName() );
 

Or during runtime like in the following example:

 getContainerManager().addChild( key, className, proxyName, config, params );
 

Copyright (c) SAP AG 2001-2002

Method Summary

Class[]

getInterfaces() Returns the interface closure the proxy implements

Methods inherited from interface com.sapportals.wcm.crt.component.IContextualizable

contextualize

Methods inherited from interface java.lang.reflect.InvocationHandler

invoke

Method Detail

getInterfaces

public Class[] getInterfaces()

Returns the interface closure the proxy implements

Returns:

interfaces