1 /* 2 * Copyright (c) 2015, 2017, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 package jdk.incubator.http.internal.common; 27 28 import jdk.incubator.http.HttpHeaders; 29 import java.util.ArrayList; 30 import java.util.Collections; 31 import java.util.List; 32 import java.util.Map; 33 import java.util.Set; 34 import java.util.TreeMap; 35 36 /** 37 * Implementation of HttpHeaders. 38 */ 39 public class HttpHeadersImpl extends HttpHeaders { 40 41 private final TreeMap<String,List<String>> headers; 42 43 public HttpHeadersImpl() { 44 headers = new TreeMap<>(String.CASE_INSENSITIVE_ORDER); 45 } 46 47 @Override 48 public Map<String, List<String>> map() { 49 return Collections.unmodifiableMap(headers); 50 } 51 52 // package private mutators 53 54 public HttpHeadersImpl deepCopy() { 55 HttpHeadersImpl h1 = new HttpHeadersImpl(); 56 Set<String> keys = headers.keySet(); 57 for (String key : keys) { 58 List<String> vals = headers.get(key); 59 List<String> vals1 = new ArrayList<>(vals); 60 h1.headers.put(key, vals1); 61 } 62 return h1; 63 } 64 65 public void addHeader(String name, String value) { 66 headers.computeIfAbsent(name, k -> new ArrayList<>(1)) 67 .add(value); 68 } 69 70 public void setHeader(String name, String value) { 71 List<String> values = new ArrayList<>(1); // most headers has one value 72 values.add(value); 73 headers.put(name, values); 74 } 75 }