001 /* 002 * Licensed to the Apache Software Foundation (ASF) under one 003 * or more contributor license agreements. See the NOTICE file 004 * distributed with this work for additional information 005 * regarding copyright ownership. The ASF licenses this file 006 * to you under the Apache License, Version 2.0 (the 007 * "License"); you may not use this file except in compliance 008 * with the License. You may obtain a copy of the License at 009 * 010 * http://www.apache.org/licenses/LICENSE-2.0 011 * 012 * Unless required by applicable law or agreed to in writing, 013 * software distributed under the License is distributed on an 014 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 015 * KIND, either express or implied. See the License for the 016 * specific language governing permissions and limitations 017 * under the License. 018 */ 019 package org.apache.fulcrum.yaafi.framework.configuration; 020 021 import java.util.Properties; 022 023 /** 024 * A implementation to provide out-of-the-box component configuration properties 025 * using the following algorithm: 026 * 027 * <ul> 028 * <li>add the user-supplied defaults to the result<li> 029 * <li>add the system properties to the result<li> 030 * <li>add the Merlin context entries to the result<li> 031 * </ul> 032 * 033 * @author <a href="mailto:siegfried.goeschl@it20one.at">Siegfried Goeschl</a> 034 */ 035 public class ComponentConfigurationPropertiesResolverImpl 036 extends ComponentConfigurationPropertiesResolverBaseImpl 037 { 038 /** 039 * @see org.apache.fulcrum.yaafi.framework.configuration.ComponentConfigurationPropertiesResolver#resolve(java.util.Properties) 040 */ 041 public Properties resolve(Properties defaults) throws Exception 042 { 043 String location = this.getLocation(); 044 Properties result = this.loadProperties(location); 045 046 if(defaults != null) 047 { 048 result.putAll(defaults); 049 } 050 051 result.putAll(System.getProperties()); 052 this.addAvalonContext(result); 053 054 return result; 055 } 056 }