001// Licensed under the Apache License, Version 2.0 (the "License");
002// you may not use this file except in compliance with the License.
003// You may obtain a copy of the License at
004//
005//     http://www.apache.org/licenses/LICENSE-2.0
006//
007// Unless required by applicable law or agreed to in writing, software
008// distributed under the License is distributed on an "AS IS" BASIS,
009// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
010// See the License for the specific language governing permissions and
011// limitations under the License.
012
013package org.apache.tapestry5.internal.services;
014
015import org.apache.tapestry5.http.services.Request;
016import org.apache.tapestry5.http.services.Session;
017
018/**
019 * A strategy for storing persistent page properties into the {@link Session session}.
020 *
021 * Builds attribute names as: <code>state:<em>page-name</em>:<em>component-id</em>:<em>field-name</em></code>
022 */
023
024public class SessionPersistentFieldStrategy extends AbstractSessionPersistentFieldStrategy
025{
026    /**
027     * Prefix used to identify keys stored in the session that are being used to store persistent field data.
028     */
029    static final String PREFIX = "state:";
030
031    public SessionPersistentFieldStrategy(Request request)
032    {
033        super(PREFIX, request);
034    }
035}