001// Copyright 2007, 2008 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.services;
016
017import org.apache.tapestry5.ioc.annotations.UsesMappedConfiguration;
018
019/**
020 * Used to provide access to {@link org.apache.tapestry5.services.ApplicationStatePersistenceStrategySource} instances
021 * via a logical name for the stategy, such as "session".
022 */
023@UsesMappedConfiguration(ApplicationStatePersistenceStrategy.class)
024public interface ApplicationStatePersistenceStrategySource
025{
026    /**
027     * Returns the named strategy.
028     *
029     * @param name of strategy to access
030     * @return the strategy
031     * @throws RuntimeException if the name does not match a configured strategy
032     */
033    ApplicationStatePersistenceStrategy get(String name);
034}