001/*
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 *     http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing,
013 * software distributed under the License is distributed on an
014 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
015 * KIND, either express or implied.  See the License for the
016 * specific language governing permissions and limitations
017 * under the License.
018 */
019package org.apache.shiro.authz.aop;
020
021import org.apache.shiro.aop.AnnotationResolver;
022
023/**
024 * Checks to see if a @{@link org.apache.shiro.authz.annotation.RequiresGuest RequiresGuest} annotation
025 * is declared, and if so, ensures the calling <code>Subject</code> does <em>not</em>
026 * have an {@link org.apache.shiro.subject.Subject#getPrincipal() identity} before invoking the method.
027 * <p>
028 * This annotation essentially ensures that <code>subject.{@link org.apache.shiro.subject.Subject#getPrincipal() getPrincipal()} == null</code>.
029 *
030 * @since 0.9.0
031 */
032public class GuestAnnotationMethodInterceptor extends AuthorizingAnnotationMethodInterceptor {
033
034    /**
035     * Default no-argument constructor that ensures this interceptor looks for
036     * {@link org.apache.shiro.authz.annotation.RequiresGuest RequiresGuest} annotations in a method
037     * declaration.
038     */
039    public GuestAnnotationMethodInterceptor() {
040        super(new GuestAnnotationHandler());
041    }
042
043    /**
044     * @param resolver
045     * @since 1.1
046     */
047    public GuestAnnotationMethodInterceptor(AnnotationResolver resolver) {
048        super(new GuestAnnotationHandler(), resolver);
049    }
050
051}