Java tutorial
/* * Licensed to the Apache Software Foundation (ASF) under one * or more contributor license agreements. See the NOTICE file * distributed with this work for additional information * regarding copyright ownership. The ASF licenses this file * to you under the Apache License, Version 2.0 (the * "License"); you may not use this file except in compliance * with the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, * software distributed under the License is distributed on an * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY * KIND, either express or implied. See the License for the * specific language governing permissions and limitations * under the License. */ package org.apache.axis2.transport.http; import org.apache.commons.httpclient.Header; import java.util.Collection; import java.util.HashMap; import java.util.Map; import java.util.Set; public class CommonsTransportHeaders implements Map { private Header[] headers; HashMap headerMap = null; public CommonsTransportHeaders(Header[] headers) { this.headers = headers; } private void init() { headerMap = new HashMap(); for (int i = 0; i < headers.length; i++) { headerMap.put(headers[i].getName(), headers[i].getValue()); } } public int size() { if (headerMap == null) { init(); } return headerMap.size(); } public void clear() { if (headerMap != null) { headerMap.clear(); } } public boolean isEmpty() { if (headerMap == null) { init(); } return headerMap.isEmpty(); } public boolean containsKey(Object key) { if (headerMap == null) { init(); } return headerMap.containsKey(key); } public boolean containsValue(Object value) { if (headerMap == null) { init(); } return headerMap.containsValue(value); } public Collection values() { if (headerMap == null) { init(); } return headerMap.values(); } public void putAll(Map t) { if (headerMap == null) { init(); } headerMap.putAll(t); } public Set entrySet() { if (headerMap == null) { init(); } return headerMap.entrySet(); } public Set keySet() { if (headerMap == null) { init(); } return headerMap.keySet(); } public Object get(Object key) { if (headerMap == null) { init(); } return headerMap.get(key); } public Object remove(Object key) { if (headerMap == null) { init(); } return headerMap.remove(key); } public Object put(Object key, Object value) { if (headerMap == null) { init(); } return headerMap.put(key, value); } }