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.BeanNotOfRequiredTypeException;
022    import org.springframework.beans.factory.NoSuchBeanDefinitionException;
023    import org.springframework.context.ApplicationContext;
024    
025    /**
026     * A {@link Registry} implementation which looks up the objects in the Spring
027     * {@link ApplicationContext}
028     * 
029     * @version $Revision: 763492 $
030     */
031    public class ApplicationContextRegistry implements Registry {
032        private ApplicationContext applicationContext;
033    
034        public ApplicationContextRegistry(ApplicationContext applicationContext) {
035            this.applicationContext = applicationContext;
036        }
037    
038        public <T> T lookup(String name, Class<T> type) {
039            try {
040                Object value = applicationContext.getBean(name, type);
041                return type.cast(value);
042            } catch (NoSuchBeanDefinitionException e) {
043                return null;
044            } catch (BeanNotOfRequiredTypeException e) {
045                return null;
046            }
047        }
048    
049        public Object lookup(String name) {
050            try {
051                return applicationContext.getBean(name);
052            } catch (NoSuchBeanDefinitionException e) {
053                return null;
054            }
055        }
056    }