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     */
019    package org.apache.shiro.authz.aop;
020    
021    import 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     */
032    public 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    }