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 */ 017package org.apache.camel.impl; 018 019import java.util.HashMap; 020import java.util.HashSet; 021import java.util.Map; 022import java.util.Set; 023 024import org.apache.camel.NoSuchBeanException; 025import org.apache.camel.spi.Registry; 026 027/** 028 * A {@link Map}-based registry. 029 */ 030public class SimpleRegistry extends HashMap<String, Object> implements Registry { 031 032 private static final long serialVersionUID = -3739035212761568984L; 033 034 public Object lookupByName(String name) { 035 return get(name); 036 } 037 038 public <T> T lookupByNameAndType(String name, Class<T> type) { 039 Object answer = lookupByName(name); 040 041 // just to be safe 042 if (answer == null) { 043 return null; 044 } 045 046 try { 047 return type.cast(answer); 048 } catch (Throwable e) { 049 String msg = "Found bean: " + name + " in SimpleRegistry: " + this 050 + " of type: " + answer.getClass().getName() + " expected type was: " + type; 051 throw new NoSuchBeanException(name, msg, e); 052 } 053 } 054 055 public <T> Map<String, T> findByTypeWithName(Class<T> type) { 056 Map<String, T> result = new HashMap<String, T>(); 057 for (Map.Entry<String, Object> entry : entrySet()) { 058 if (type.isInstance(entry.getValue())) { 059 result.put(entry.getKey(), type.cast(entry.getValue())); 060 } 061 } 062 return result; 063 } 064 065 public <T> Set<T> findByType(Class<T> type) { 066 Set<T> result = new HashSet<T>(); 067 for (Map.Entry<String, Object> entry : entrySet()) { 068 if (type.isInstance(entry.getValue())) { 069 result.add(type.cast(entry.getValue())); 070 } 071 } 072 return result; 073 } 074 075 public Object lookup(String name) { 076 return lookupByName(name); 077 } 078 079 public <T> T lookup(String name, Class<T> type) { 080 return lookupByNameAndType(name, type); 081 } 082 083 public <T> Map<String, T> lookupByType(Class<T> type) { 084 return findByTypeWithName(type); 085 } 086}