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.HashMap;
020    import java.util.Map;
021    
022    import org.apache.camel.spi.Registry;
023    
024    /**
025     * A {@link Map}-based registry.
026     */
027    public class SimpleRegistry extends HashMap<String, Object> implements Registry {
028    
029        private static final long serialVersionUID = -3739035212761568984L;
030    
031        public Object lookup(String name) {
032            return get(name);
033        }
034    
035        public <T> T lookup(String name, Class<T> type) {
036            Object o = lookup(name);
037            return type.cast(o);
038        }
039    
040        public <T> Map<String, T> lookupByType(Class<T> type) {
041            Map<String, T> result = new HashMap<String, T>();
042            for (Map.Entry<String, Object> entry : entrySet()) {
043                if (type.isInstance(entry.getValue())) {
044                    result.put(entry.getKey(), type.cast(entry.getValue()));
045                }
046            }
047            return result;
048        }
049        
050    }