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.impl;
018
019 import java.util.Collections;
020 import java.util.Hashtable;
021 import java.util.Map;
022 import javax.naming.Context;
023 import javax.naming.InitialContext;
024 import javax.naming.NameNotFoundException;
025 import javax.naming.NamingException;
026
027 import org.apache.camel.RuntimeCamelException;
028 import org.apache.camel.spi.Registry;
029
030 /**
031 * A {@link Registry} implementation which looks up the objects in JNDI
032 *
033 * @version $Revision: 762641 $
034 */
035 public class JndiRegistry implements Registry {
036 private Context context;
037
038 public JndiRegistry() {
039 }
040
041 public JndiRegistry(Context context) {
042 this.context = context;
043 }
044
045 public <T> T lookup(String name, Class<T> type) {
046 Object value = lookup(name);
047 return type.cast(value);
048 }
049
050 public Object lookup(String name) {
051 try {
052 return getContext().lookup(name);
053 } catch (NameNotFoundException e) {
054 return null;
055 } catch (NamingException e) {
056 return null;
057 }
058 }
059
060 @SuppressWarnings("unchecked")
061 public <T> Map<String, T> lookupByType(Class<T> type) {
062 // not implemented so we return an empty map
063 return Collections.EMPTY_MAP;
064 }
065
066 public void bind(String s, Object o) {
067 try {
068 getContext().bind(s, o);
069 } catch (NamingException e) {
070 throw new RuntimeCamelException(e);
071 }
072 }
073
074 public void close() throws NamingException {
075 getContext().close();
076 }
077
078 public Context getContext() throws NamingException {
079 if (context == null) {
080 context = createContext();
081 }
082 return context;
083 }
084
085 public void setContext(Context context) {
086 this.context = context;
087 }
088
089 @SuppressWarnings("unchecked")
090 protected Context createContext() throws NamingException {
091 Hashtable properties = new Hashtable(System.getProperties());
092 return new InitialContext(properties);
093 }
094 }