/* Copyright 2004, 2005, 2006 Acegi Technology Pty Limited

  *

  * Licensed under the Apache License, Version 2.0 (the "License");

  * you may not use this file except in compliance with the License.

  * You may obtain a copy of the License at

  *

  *     http://www.apache.org/licenses/LICENSE-2.0

  *

  * Unless required by applicable law or agreed to in writing, software

  * distributed under the License is distributed on an "AS IS" BASIS,

  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

  * See the License for the specific language governing permissions and

  * limitations under the License.

  */

 package org.acegisecurity.intercept.method.aspectj;

 import org.acegisecurity.intercept.AbstractSecurityInterceptor;

 import org.acegisecurity.intercept.InterceptorStatusToken;

 import org.acegisecurity.intercept.ObjectDefinitionSource;

 import org.acegisecurity.intercept.method.MethodDefinitionSource;

 import org.aspectj.lang.JoinPoint;

 /**

  * Provides security interception of AspectJ method invocations.<p>The <code>ObjectDefinitionSource</code> required

  * by this security interceptor is of type {@link MethodDefinitionSource}. This is shared with the AOP Alliance based

  * security interceptor (<code>MethodSecurityInterceptor</code>),  since both work with Java <code>Method</code>s.</p>

  *  <p>The secure object type is <code>org.aspectj.lang.JoinPoint</code>, which is passed from the relevant

  * <code>around()</code> advice. The <code>around()</code> advice also passes an anonymous implementation of {@link

  * AspectJCallback} which contains the call for AspectJ to continue processing:  <code>return proceed();</code>.</p>

  *  <P>Refer to {@link AbstractSecurityInterceptor} for details on the workflow.</p>

  *

  * @author Ben Alex

  * @version $Id: AspectJSecurityInterceptor.java 1496 2006-05-23 13:38:33Z benalex $

  */

 public class AspectJSecurityInterceptor extends AbstractSecurityInterceptor {

     //~ Instance fields ================================================================================================

     private MethodDefinitionSource objectDefinitionSource;

     //~ Methods ========================================================================================================

     public MethodDefinitionSource getObjectDefinitionSource() {

         return this.objectDefinitionSource;

     }

     public Class getSecureObjectClass() {

         return JoinPoint.class;

     }

     /**

      * This method should be used to enforce security on a <code>JoinPoint</code>.

      *

      * @param jp The AspectJ joint point being invoked which requires a security decision

      * @param advisorProceed the advice-defined anonymous class that implements <code>AspectJCallback</code> containing

      *        a simple <code>return proceed();</code> statement

      *

      * @return The returned value from the method invocation

      */

     public Object invoke(JoinPoint jp, AspectJCallback advisorProceed) {

         Object result = null;

         InterceptorStatusToken token = super.beforeInvocation(jp);

         try {

             result = advisorProceed.proceedWithObject();

         } finally {

             result = super.afterInvocation(token, result);

         }

         return result;

     }

     public ObjectDefinitionSource obtainObjectDefinitionSource() {

         return this.objectDefinitionSource;

     }

     public void setObjectDefinitionSource(MethodDefinitionSource newSource) {

         this.objectDefinitionSource = newSource;

     }

 }