001    /**
002     *
003     * Licensed to the Apache Software Foundation (ASF) under one or more
004     * contributor license agreements.  See the NOTICE file distributed with
005     * this work for additional information regarding copyright ownership.
006     * The ASF licenses this file to You under the Apache License, Version 2.0
007     * (the "License"); you may not use this file except in compliance with
008     * the License.  You may obtain a copy of the License at
009     *
010     * http://www.apache.org/licenses/LICENSE-2.0
011     *
012     * Unless required by applicable law or agreed to in writing, software
013     * distributed under the License is distributed on an "AS IS" BASIS,
014     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015     * See the License for the specific language governing permissions and
016     * limitations under the License.
017     */
018    package org.apache.camel.impl;
019    
020    import org.apache.camel.Exchange;
021    import org.apache.camel.CamelContext;
022    import org.apache.camel.Headers;
023    
024    import java.util.Map;
025    import java.util.HashMap;
026    
027    /**
028     * A default implementation of {@link Headers}
029     *
030     * @version $Revision: 520502 $
031     */
032    public class DefaultHeaders extends HeadersSupport {
033        private Map<String, Object> headers;
034    
035        public Object getHeader(String name) {
036            if (headers != null) {
037                return headers.get(name);
038            }
039            return null;
040        }
041    
042        public void setHeader(String name, Object value) {
043            getHeaders().put(name, value);
044        }
045    
046        public Map<String, Object> getHeaders() {
047            if (headers == null) {
048                headers = new HashMap<String, Object>();
049            }
050            return headers;
051        }
052    
053        public void setHeaders(Map<String, Object> headers) {
054            this.headers = headers;
055        }
056    }