001// Copyright 2004, 2005 The Apache Software Foundation 002// 003// Licensed under the Apache License, Version 2.0 (the "License"); 004// you may not use this file except in compliance with the License. 005// You may obtain a copy of the License at 006// 007// http://www.apache.org/licenses/LICENSE-2.0 008// 009// Unless required by applicable law or agreed to in writing, software 010// distributed under the License is distributed on an "AS IS" BASIS, 011// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 012// See the License for the specific language governing permissions and 013// limitations under the License. 014 015package org.apache.tapestry.contrib.table.model.common; 016 017import java.io.Serializable; 018 019import org.apache.tapestry.contrib.table.model.ITableModel; 020import org.apache.tapestry.contrib.table.model.ITableSessionStateManager; 021 022/** 023 * A simple ITableSessionStateManager implementation 024 * that saves nothing at all into the session. 025 * 026 * @author mindbridge 027 */ 028public class NullTableSessionStateManager implements ITableSessionStateManager 029{ 030 031 public final static NullTableSessionStateManager NULL_STATE_MANAGER = 032 new NullTableSessionStateManager(); 033 034 /** 035 * @see org.apache.tapestry.contrib.table.model.ITableSessionStateManager#getSessionState(ITableModel) 036 */ 037 public Serializable getSessionState(ITableModel objModel) 038 { 039 return null; 040 } 041 042 /** 043 * @see org.apache.tapestry.contrib.table.model.ITableSessionStateManager#recreateTableModel(Serializable) 044 */ 045 public ITableModel recreateTableModel(Serializable objState) 046 { 047 return null; 048 } 049 050}