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.Properties;
020
021/**
022 * This class is a camelCase ordered {@link Properties} where the key/values are stored in the order they are added or
023 * loaded.
024 * <p/>
025 * The keys are stored in the original case, for example a key of <code>camel.main.stream-caching-enabled</code> is
026 * stored as <code>camel.main.stream-caching-enabled</code>.
027 * <p/>
028 * However the lookup of a value by key with the <tt>get</tt> methods, will support camelCase or dash style.
029 * <p/>
030 * Note: This implementation is only intended as implementation detail for Camel tooling such as camel-jbang, and has
031 * only been designed to provide the needed functionality. The complex logic for loading properties has been kept from
032 * the JDK {@link Properties} class.
033 */
034public final class CamelCaseOrderedProperties extends BaseOrderedProperties {
035
036    @Override
037    public Object get(Object key) {
038        lock.lock();
039        try {
040            return getProperty(key.toString());
041        } finally {
042            lock.unlock();
043        }
044    }
045
046    @Override
047    public String getProperty(String key) {
048        String answer = super.getProperty(key);
049        if (answer == null) {
050            answer = super.getProperty(StringHelper.dashToCamelCase(key));
051        }
052        if (answer == null) {
053            answer = super.getProperty(StringHelper.camelCaseToDash(key));
054        }
055        return answer;
056    }
057
058    @Override
059    public String getProperty(String key, String defaultValue) {
060        String answer = getProperty(key);
061        if (answer == null) {
062            answer = defaultValue;
063        }
064        return answer;
065    }
066
067}