src/org/jsecurity/authz/aop/AuthorizingAnnotationMethodInterceptor.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.jsecurity.authz.aop;

import org.jsecurity.aop.AnnotationMethodInterceptor;
import org.jsecurity.aop.MethodInvocation;
import org.jsecurity.authz.AuthorizationException;

import java.lang.annotation.Annotation;

/**
 * An <tt>AnnotationMethodInterceptor</tt> that asserts the calling code is authorized to execute the method
 * before allowing the invocation to continue.
 *
 * @author Les Hazlewood
 * @since 0.1
 */
public abstract class AuthorizingAnnotationMethodInterceptor extends AnnotationMethodInterceptor {

    public AuthorizingAnnotationMethodInterceptor(Class<? extends Annotation> annotationClass) {
        super(annotationClass);
    }

    public Object invoke(MethodInvocation methodInvocation) throws Throwable {
        assertAuthorized(methodInvocation);
        return methodInvocation.proceed();
    }

    public abstract void assertAuthorized(MethodInvocation mi) throws AuthorizationException;
}