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