    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}