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.component.http;
018    
019    import java.util.ArrayList;
020    import java.util.Collections;
021    import java.util.List;
022    
023    import org.apache.commons.httpclient.HttpClient;
024    
025    public class CompositeHttpConfigurer implements HttpClientConfigurer {
026        
027        private final List<HttpClientConfigurer> configurers = new ArrayList<HttpClientConfigurer>();
028        
029        public void addConfigurer(HttpClientConfigurer configurer) {
030            if (configurer != null) {
031                configurers.add(configurer);
032            }
033        }
034        
035        public void removeConfigurer(HttpClientConfigurer configurer) {
036            configurers.remove(configurer);
037        }
038    
039        public void configureHttpClient(HttpClient client) {
040            for (HttpClientConfigurer configurer : configurers) {
041                configurer.configureHttpClient(client);
042            }        
043        }
044        
045        public static CompositeHttpConfigurer combineConfigurers(HttpClientConfigurer oldConfigurer, HttpClientConfigurer newConfigurer) {
046            if (oldConfigurer instanceof CompositeHttpConfigurer) {
047                ((CompositeHttpConfigurer)oldConfigurer).addConfigurer(newConfigurer);
048                return (CompositeHttpConfigurer)oldConfigurer;
049            } else {
050                CompositeHttpConfigurer answer = new CompositeHttpConfigurer();
051                answer.addConfigurer(newConfigurer);
052                answer.addConfigurer(oldConfigurer);
053                return answer;
054            }
055        }
056    
057        public List<HttpClientConfigurer> getConfigurers() {
058            return Collections.unmodifiableList(configurers);
059        }
060    }