001/*
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements.  See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License.  You may obtain a copy of the License at
008 *
009 *      http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017package org.apache.wicket.core.util.objects.checker;
018
019import org.apache.wicket.Session;
020
021/**
022 * An implementation of {@link org.apache.wicket.core.util.objects.checker.IObjectChecker} that returns a failure
023 * result when the checked object is a {@link org.apache.wicket.Session}.
024 * Keeping a reference to the session instance in the component tree is an error.
025 *
026 * @since 6.17.0
027 */
028public class SessionChecker extends AbstractObjectChecker
029{
030        @Override
031        public Result doCheck(Object obj)
032        {
033                Result result = Result.SUCCESS;
034
035                if (obj instanceof Session)
036                {
037                        result = new Result(Result.Status.FAILURE, "Trying to serialize the Wicket Session!");
038                }
039
040                return result;
041        }
042}