001    /*
002     * Copyright 2002-2005 the original author or authors.
003     *
004     * Licensed under the Apache License, Version 2.0 (the "License"); you may not
005     * use this file except in compliance with the License. You may obtain a copy of
006     * the License at
007     *
008     * http://www.apache.org/licenses/LICENSE-2.0
009     *
010     * Unless required by applicable law or agreed to in writing, software
011     * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
012     * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
013     * License for the specific language governing permissions and limitations under
014     * the License.
015     */
016    package org.springframework.richclient.application.support;
017    
018    import java.util.Collections;
019    import java.util.HashMap;
020    import java.util.Map;
021    
022    import org.springframework.richclient.application.ApplicationServices;
023    import org.springframework.richclient.util.Assert;
024    
025    public class StaticApplicationServices implements ApplicationServices {
026    
027        private final Map services = Collections.synchronizedMap(new HashMap());
028    
029        public Object getService(Class serviceType) {
030            Assert.required(serviceType, "serviceType");
031            Object service = services.get(serviceType);
032            if (service == null) {
033                throw new UnsupportedOperationException("No service of type '" + serviceType + "' found.");
034            }
035            return service;
036        }
037    
038        public boolean containsService(Class serviceType) {
039            Assert.required(serviceType, "serviceType");
040            return services.containsKey(serviceType);
041        }
042    
043        public void registerService(Object service, Class serviceInterface) {
044            Assert.required(service, "service");
045            Assert.required(serviceInterface, "serviceInterface");
046            services.put(serviceInterface, service);
047        }
048    }