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/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.jetspeed.components.util;

import java.io.InputStream;
import java.util.Map;
import java.util.Properties;

import org.apache.commons.configuration.ConfigurationUtils;
import org.apache.commons.configuration.PropertiesConfiguration;
import org.springframework.beans.factory.InitializingBean;
import org.springframework.core.io.Resource;

/**
 * 

* ConfigurationProperties is a Spring wrapper for Commons PropertiesConfiguration * allowing loading multiple properties files with overriding behavior as well as * predefining local/inline properties to be loaded first. *

*

* Multiple properties files are loaded in sequence of definition and copied * over each other, instead of being added/appended as Commons Configuration does by default * when multiple definitions of the same property key is loaded. *

* @version $Id: ConfigurationProperties.java 649469 2008-04-18 11:40:38Z ate $ * */ public class ConfigurationProperties extends PropertiesConfiguration implements InitializingBean { private Resource[] locations; private Properties[] localProperties; public void setProperties(Properties properties) { this.localProperties = new Properties[] {properties}; } public void setLocation(Resource location) { this.locations = new Resource[] {location}; } public void setLocations(Resource[] locations) { this.locations = locations; } public void afterPropertiesSet() throws Exception { if (localProperties != null) { for (Properties props : localProperties) { for (Map.Entry entry : props.entrySet()) { setProperty((String)entry.getKey(), entry.getValue()); } } } if (this.locations != null) { for (int i = 0; i < this.locations.length; i++) { Resource location = this.locations[i]; InputStream is = null; try { is = location.getInputStream(); PropertiesConfiguration config = this; if (i > 0) { config = new PropertiesConfiguration(); } config.load(is); if (i > 0) { ConfigurationUtils.copy(config,this); config.clear(); } } finally { if (is != null) { is.close(); } } } } } }




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