    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.services.Request;
    016import org.apache.tapestry5.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}