001// Copyright 2006, 2007 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.tapestry5.internal.services;
016
017import org.apache.tapestry5.services.Request;
018import org.apache.tapestry5.services.Session;
019
020/**
021 * A strategy for storing persistent page properties into the {@link Session session}.
022 * <p/>
023 * Builds attribute names as: <code>state:<em>page-name</em>:<em>component-id</em>:<em>field-name</em></code>
024 */
025
026public class SessionPersistentFieldStrategy extends AbstractSessionPersistentFieldStrategy
027{
028    /**
029     * Prefix used to identify keys stored in the session that are being used to store persistent field data.
030     */
031    static final String PREFIX = "state:";
032
033    public SessionPersistentFieldStrategy(Request request)
034    {
035        super(PREFIX, request);
036    }
037}