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.Map;
020    import java.util.Set;
021    
022    import org.apache.camel.CamelContext;
023    import org.apache.camel.spi.Registry;
024    import org.apache.camel.util.ObjectHelper;
025    
026    /**
027     * A {@link Registry} which delegates to the real registry.
028     * <p/>
029     * This is used to ensure that Camel performs property placeholder resolution on every lookup.
030     *
031     * @version 
032     */
033    public class PropertyPlaceholderDelegateRegistry implements Registry {
034    
035        private final CamelContext context;
036        private final Registry delegate;
037    
038        public PropertyPlaceholderDelegateRegistry(CamelContext context, Registry delegate) {
039            this.context = context;
040            this.delegate = delegate;
041        }
042    
043        public Object lookupByName(String name) {
044            try {
045                // Must avoid attempting placeholder resolution when looking up
046                // the properties component or else we end up in an infinite loop.
047                if (!name.equals("properties")) {
048                    name = context.resolvePropertyPlaceholders(name);
049                }
050                return delegate.lookupByName(name);
051            } catch (Exception e) {
052                throw ObjectHelper.wrapRuntimeCamelException(e);
053            }
054        }
055    
056        public <T> T lookupByNameAndType(String name, Class<T> type) {
057            try {
058                // Must avoid attempting placeholder resolution when looking up
059                // the properties component or else we end up in an infinite loop.
060                if (!name.equals("properties")) {
061                    name = context.resolvePropertyPlaceholders(name);
062                }
063                return delegate.lookupByNameAndType(name, type);
064            } catch (Exception e) {
065                throw ObjectHelper.wrapRuntimeCamelException(e);
066            }
067        }
068    
069        public <T> Map<String, T> findByTypeWithName(Class<T> type) {
070            return delegate.findByTypeWithName(type);
071        }
072    
073        public <T> Set<T> findByType(Class<T> type) {
074            return delegate.findByType(type);
075        }
076    
077        public Object lookup(String name) {
078            return lookupByName(name);
079        }
080    
081        public <T> T lookup(String name, Class<T> type) {
082            return lookupByNameAndType(name, type);
083        }
084    
085        public <T> Map<String, T> lookupByType(Class<T> type) {
086            return findByTypeWithName(type);
087        }
088    
089        public Registry getRegistry() {
090            return delegate;
091        }
092    
093        @Override
094        public String toString() {
095            return delegate.toString();
096        }
097    }