001    /**
002     * Licensed to the Apache Software Foundation (ASF) under one or more
003     * contributor license agreements.  See the NOTICE file distributed with
004     * this work for additional information regarding copyright ownership.
005     * The ASF licenses this file to You under the Apache License, Version 2.0
006     * (the "License"); you may not use this file except in compliance with
007     * the License.  You may obtain a copy of the License at
008     *
009     *      http://www.apache.org/licenses/LICENSE-2.0
010     *
011     * Unless required by applicable law or agreed to in writing, software
012     * distributed under the License is distributed on an "AS IS" BASIS,
013     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014     * See the License for the specific language governing permissions and
015     * limitations under the License.
016     */
017    package org.apache.camel.spring.spi;
018    
019    import java.util.Map;
020    
021    import org.apache.camel.spi.Registry;
022    import org.springframework.beans.factory.BeanNotOfRequiredTypeException;
023    import org.springframework.beans.factory.NoSuchBeanDefinitionException;
024    import org.springframework.context.ApplicationContext;
025    
026    /**
027     * A {@link Registry} implementation which looks up the objects in the Spring
028     * {@link ApplicationContext}
029     * 
030     * @version $Revision: 763484 $
031     */
032    public class ApplicationContextRegistry implements Registry {
033        private ApplicationContext applicationContext;
034    
035        public ApplicationContextRegistry(ApplicationContext applicationContext) {
036            this.applicationContext = applicationContext;
037        }
038    
039        public <T> T lookup(String name, Class<T> type) {
040            try {
041                Object value = applicationContext.getBean(name, type);
042                return type.cast(value);
043            } catch (NoSuchBeanDefinitionException e) {
044                return null;
045            } catch (BeanNotOfRequiredTypeException e) {
046                return null;
047            }
048        }
049    
050        public Object lookup(String name) {
051            try {
052                return applicationContext.getBean(name);
053            } catch (NoSuchBeanDefinitionException e) {
054                return null;
055            }
056        }
057    
058        @SuppressWarnings("unchecked")
059        public <T> Map<String, T> lookupByType(Class<T> type) {
060            return applicationContext.getBeansOfType(type);
061        }
062    }