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.Map;
020import java.util.Set;
021
022import org.apache.camel.CamelContext;
023import org.apache.camel.spi.Registry;
024import 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 */
033public 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}