1 /* 2 * Copyright (c) 2015, 2016, 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 */ 24 25 package java.net.http; 26 27 import java.util.Collections; 28 import java.util.List; 29 import java.util.Map; 30 import java.util.Optional; 31 import java.util.TreeMap; 32 import java.util.function.Predicate; 33 34 /** 35 * Immutable HttpHeaders constructed from mutable HttpHeadersImpl. 36 */ 37 38 class ImmutableHeaders implements HttpHeaders { 39 40 private final Map<String,List<String>> map; 41 42 @SuppressWarnings("unchecked") 43 ImmutableHeaders() { 44 map = (Map<String,List<String>>)Collections.EMPTY_MAP; 45 } 46 // TODO: fix lower case issue. Must be lc for http/2 compares ignoreCase for http/1 47 ImmutableHeaders(HttpHeadersImpl h, Predicate<String> keyAllowed) { 48 Map<String,List<String>> src = h.directMap(); 49 Map<String,List<String>> m = new TreeMap<>(String.CASE_INSENSITIVE_ORDER); 50 51 src.forEach((key, value) -> { 52 if (keyAllowed.test(key)) 53 m.put(key, Collections.unmodifiableList(value)); 54 }); 55 map = Collections.unmodifiableMap(m); 56 } 57 58 @Override 59 public Optional<String> firstValue(String name) { 60 List<String> l = map.get(name); 61 String v = l == null ? null : l.get(0); 62 return Optional.ofNullable(v); 63 } 64 65 @Override 66 public Optional<Long> firstValueAsLong(String name) { 67 return firstValue(name).map((v -> Long.parseLong(v))); 68 } 69 70 @Override 71 public List<String> allValues(String name) { 72 return map.get(name); 73 } 74 75 @Override 76 public Map<String, List<String>> map() { 77 return map; 78 } 79 }