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}