nextapp.echo.app.util.PropertiesDiscovery Maven / Gradle / Ivy
/*
* This file is part of the Echo Web Application Framework (hereinafter "Echo").
* Copyright (C) 2002-2009 NextApp, Inc.
*
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (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.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*/
package nextapp.echo.app.util;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.Map;
import java.util.Properties;
/**
* Utility class for retrieving property files matching a specific name
* across the CLASSPATH.
*/
public class PropertiesDiscovery {
/**
* Returns a map containing the contents of all property files with
* the specified resource name.
*
* @param resourceName the name of the properties file(s) to load
* @return a map containing properties of all properties files
* in the CLASSPATH matching the specified
* resourceName
*/
public static Map loadProperties(String resourceName, ClassLoader classLoader)
throws IOException {
Map propertyMap = new HashMap();
Enumeration resources = classLoader.getResources(resourceName);
while (resources.hasMoreElements()) {
URL resourceUrl = (URL) resources.nextElement();
Properties peerProperties = new Properties();
InputStream in = resourceUrl.openStream();
try {
peerProperties.load(in);
propertyMap.putAll(peerProperties);
} finally {
in.close();
}
}
return propertyMap;
}
/** Non-instantiable class. */
private PropertiesDiscovery() { }
}