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.aop;
020
021import org.apache.shiro.SecurityUtils;
022import org.apache.shiro.subject.Subject;
023
024
025/**
026 * This class is an abstraction of AOP method interceptor behavior specific to Shiro that
027 * leaves AOP implementation specifics to be handled by subclass implementations.  This implementation primarily
028 * enables a <tt>Log</tt> and makes available the currently executing {@link Subject Subject}.
029 *
030 * @since 0.2
031 */
032public abstract class MethodInterceptorSupport implements MethodInterceptor {
033
034    /**
035     * Default no-argument constructor for subclasses.
036     */
037    public MethodInterceptorSupport() {
038    }
039
040    /**
041     * Returns the {@link Subject Subject} associated with the currently-executing code.
042     * <p/>
043     * This default implementation merely calls
044     * <code>{@link org.apache.shiro.SecurityUtils#getSubject SecurityUtils.getSubject()}</code>.
045     *
046     * @return the {@link org.apache.shiro.subject.Subject Subject} associated with the currently-executing code.
047     */
048    protected Subject getSubject() {
049        return SecurityUtils.getSubject();
050    }
051}