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.NoSuchBeanException; 028 import org.apache.camel.RuntimeCamelException; 029 import org.apache.camel.spi.Registry; 030 031 /** 032 * A {@link Registry} implementation which looks up the objects in JNDI 033 * 034 * @version 035 */ 036 public class JndiRegistry implements Registry { 037 private Context context; 038 039 public JndiRegistry() { 040 } 041 042 public JndiRegistry(Context context) { 043 this.context = context; 044 } 045 046 public <T> T lookup(String name, Class<T> type) { 047 Object answer = lookup(name); 048 049 // just to be safe 050 if (answer == null) { 051 return null; 052 } 053 054 try { 055 return type.cast(answer); 056 } catch (Throwable e) { 057 String msg = "Found bean: " + name + " in JNDI Context: " + context 058 + " of type: " + answer.getClass().getName() + " expected type was: " + type; 059 throw new NoSuchBeanException(name, msg, e); 060 } 061 } 062 063 public Object lookup(String name) { 064 try { 065 return getContext().lookup(name); 066 } catch (NameNotFoundException e) { 067 return null; 068 } catch (NamingException e) { 069 return null; 070 } 071 } 072 073 public <T> Map<String, T> lookupByType(Class<T> type) { 074 // not implemented so we return an empty map 075 return Collections.emptyMap(); 076 } 077 078 public void bind(String s, Object o) { 079 try { 080 getContext().bind(s, o); 081 } catch (NamingException e) { 082 throw new RuntimeCamelException(e); 083 } 084 } 085 086 public void close() throws NamingException { 087 getContext().close(); 088 } 089 090 public Context getContext() throws NamingException { 091 if (context == null) { 092 context = createContext(); 093 } 094 return context; 095 } 096 097 public void setContext(Context context) { 098 this.context = context; 099 } 100 101 protected Context createContext() throws NamingException { 102 Hashtable<?, ?> properties = new Hashtable<Object, Object>(System.getProperties()); 103 return new InitialContext(properties); 104 } 105 }