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 */ 017package org.apache.camel.util; 018 019import java.util.Map; 020import java.util.TreeMap; 021 022/** 023 * A map that uses case insensitive keys, but preserves the original key cases. 024 * <p/> 025 * The map is based on {@link TreeMap} and therefore uses O(n) for lookup and not O(1) as a {@link java.util.HashMap} does. 026 * <p/> 027 * This map is <b>not</b> designed to be thread safe as concurrent access to it is not supposed to be performed 028 * by the Camel routing engine. 029 * 030 * @version 031 */ 032public class CaseInsensitiveMap extends TreeMap<String, Object> { 033 034 private static final long serialVersionUID = -8538318195477618308L; 035 036 public CaseInsensitiveMap() { 037 super(String.CASE_INSENSITIVE_ORDER); 038 } 039 040 public CaseInsensitiveMap(Map<? extends String, ?> map) { 041 // must use the insensitive order 042 super(String.CASE_INSENSITIVE_ORDER); 043 putAll(map); 044 } 045 046}