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} 026 * does. 027 * <p/> 028 * This map is <b>not</b> designed to be thread safe as concurrent access to it is not supposed to be performed by the 029 * Camel routing engine. 030 */ 031public class CaseInsensitiveMap extends TreeMap<String, Object> { 032 033 private static final long serialVersionUID = -8538318195477618308L; 034 035 public CaseInsensitiveMap() { 036 super(String.CASE_INSENSITIVE_ORDER); 037 } 038 039 public CaseInsensitiveMap(Map<? extends String, ?> map) { 040 // must use the insensitive order 041 super(String.CASE_INSENSITIVE_ORDER); 042 putAll(map); 043 } 044 045}