    001// Copyright 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.http.Link;
    018import org.apache.tapestry5.services.PersistentFieldChange;
    019import org.apache.tapestry5.services.PersistentFieldStrategy;
    020
    021/**
    022 * Describes an object that can store {@link PersistentFieldChange}s, and manage a query parameter stored into a {@link
    023 * Link} to maining this data across requests.
    024 */
    025public interface ClientPersistentFieldStorage extends PersistentFieldStrategy
    026{
    027    /**
    028     * Updates a link, adding a query parameter to it (if necessary) to store
    029     *
    030     * @param link
    031     */
    032    void updateLink(Link link);
    033}