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.session.mgt;
020    
021    import org.apache.shiro.session.InvalidSessionException;
022    import org.apache.shiro.session.Session;
023    
024    
025    /**
026     * A <code>ValidatingSession</code> is a <code>Session</code> that is capable of determining it is valid or not and
027     * is able to validate itself if necessary.
028     * <p/>
029     * Validation is usually an exercise of determining when the session was last accessed or modified and determining if
030     * that time is longer than a specified allowed duration.
031     * 
032     * @author Les Hazlewood
033     * @since 0.9
034     */
035    public interface ValidatingSession extends Session {
036    
037        boolean isValid();
038    
039        void validate() throws InvalidSessionException;
040    }