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1   /*
2    * Licensed to the Apache Software Foundation (ASF) under one
3    * or more contributor license agreements.  See the NOTICE file
4    * distributed with this work for additional information
5    * regarding copyright ownership.  The ASF licenses this file
6    * to you under the Apache License, Version 2.0 (the
7    * "License"); you may not use this file except in compliance
8    * with the License.  You may obtain a copy of the License at
9    *
10   *     http://www.apache.org/licenses/LICENSE-2.0
11   *
12   * Unless required by applicable law or agreed to in writing,
13   * software distributed under the License is distributed on an
14   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15   * KIND, either express or implied.  See the License for the
16   * specific language governing permissions and limitations
17   * under the License.
18   */
19  package org.apache.shiro.authz.aop;
20  
21  import org.apache.shiro.aop.AnnotationResolver;
22  
23  /**
24   * Checks to see if a @{@link org.apache.shiro.authz.annotation.RequiresGuest RequiresGuest} annotation
25   * is declared, and if so, ensures the calling <code>Subject</code> does <em>not</em>
26   * have an {@link org.apache.shiro.subject.Subject#getPrincipal() identity} before invoking the method.
27   * <p>
28   * This annotation essentially ensures that <code>subject.{@link org.apache.shiro.subject.Subject#getPrincipal() getPrincipal()} == null</code>.
29   *
30   * @since 0.9.0
31   */
32  public class GuestAnnotationMethodInterceptor extends AuthorizingAnnotationMethodInterceptor {
33  
34      /**
35       * Default no-argument constructor that ensures this interceptor looks for
36       * {@link org.apache.shiro.authz.annotation.RequiresGuest RequiresGuest} annotations in a method
37       * declaration.
38       */
39      public GuestAnnotationMethodInterceptor() {
40          super(new GuestAnnotationHandler());
41      }
42  
43      /**
44       * @param resolver
45       * @since 1.1
46       */
47      public GuestAnnotationMethodInterceptor(AnnotationResolver resolver) {
48          super(new GuestAnnotationHandler(), resolver);
49      }
50  
51  }