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