    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
    015    package org.apache.tapestry5.internal.services;
    016
    017    import org.apache.tapestry5.services.ApplicationStatePersistenceStrategy;
    018    import org.apache.tapestry5.services.ApplicationStatePersistenceStrategySource;
    019
    020    import java.util.Map;
    021
    022    public class ApplicationStatePersistenceStrategySourceImpl implements
    023            ApplicationStatePersistenceStrategySource
    024    {
    025        private final Map<String, ApplicationStatePersistenceStrategy> configuration;
    026
    027        public ApplicationStatePersistenceStrategySourceImpl(Map<String, ApplicationStatePersistenceStrategy> configuration)
    028        {
    029            this.configuration = configuration;
    030        }
    031
    032        public ApplicationStatePersistenceStrategy get(String name)
    033        {
    034            ApplicationStatePersistenceStrategy result = configuration.get(name);
    035
    036            if (result == null)
    037                throw new RuntimeException(ServicesMessages.missingApplicationStatePersistenceStrategy(
    038                        name,
    039                        configuration.keySet()));
    040
    041            return result;
    042        }
    043    }