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 org.apache.camel.spi.Registry;
020    
021    import org.springframework.beans.factory.NoSuchBeanDefinitionException;
022    import org.springframework.context.ApplicationContext;
023    
024    /**
025     * A {@link Registry} implementation which looks up the objects in the Spring
026     * {@link ApplicationContext}
027     * 
028     * @version $Revision: 630591 $
029     */
030    public class ApplicationContextRegistry implements Registry {
031        private ApplicationContext applicationContext;
032    
033        public ApplicationContextRegistry(ApplicationContext applicationContext) {
034            this.applicationContext = applicationContext;
035        }
036    
037        public <T> T lookup(String name, Class<T> type) {
038            try {
039                Object value = applicationContext.getBean(name, type);
040                return type.cast(value);
041            } catch (NoSuchBeanDefinitionException e) {
042                return null;
043            }
044        }
045    
046        public Object lookup(String name) {
047            try {
048                return applicationContext.getBean(name);
049            } catch (NoSuchBeanDefinitionException e) {
050                return null;
051            }
052        }
053    }