org.apache.cxf.common.util.PropertiesLoaderUtils Maven / Gradle / Ivy
/**
* 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.cxf.common.util;
import java.io.BufferedInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Enumeration;
import java.util.Properties;
import java.util.logging.Level;
import java.util.logging.Logger;
/**
* Replace by org.springframework.core.io.support.PropertiesLoaderUtils
* when moving to Spring 2.0.
*
*/
public final class PropertiesLoaderUtils {
/**
* Prevents instantiation.
*/
private PropertiesLoaderUtils() {
}
/**
* Load all properties from the given class path resource, using the given
* class loader.
*
* Merges properties if more than one resource of the same name found in the
* class path.
*
* @param resourceName the name of the class path resource
* @param classLoader the ClassLoader to use for loading (or
* null to use the default class loader)
* @return the populated Properties instance
* @throws IOException if loading failed
*/
public static Properties loadAllProperties(String resourceName, ClassLoader classLoader)
throws IOException {
return loadAllProperties(resourceName, classLoader, null, null, null);
}
public static Properties loadAllProperties(String resourceName, ClassLoader classLoader,
Logger logger, Level level, String msg)
throws IOException {
Properties properties = new Properties();
// Set default class loader if neccessary
if (classLoader == null) {
classLoader = PropertiesLoaderUtils.class.getClassLoader();
}
Enumeration urls = classLoader.getResources(resourceName);
while (urls.hasMoreElements()) {
URL url = urls.nextElement();
if (logger != null) {
logger.log(level, msg, url.toString());
}
InputStream is = null;
try {
is = url.openStream();
properties.loadFromXML(new BufferedInputStream(is));
} finally {
if (is != null) {
is.close();
}
}
}
return properties;
}
/**
* Retrieves the names of all properties that bind to the specified value.
*
* @param properties the properties to search
* @param value the property value
* @return the list of property names
*/
public static Collection getPropertyNames(Properties properties, String value) {
Collection names = new ArrayList();
Enumeration e = properties.propertyNames();
while (e.hasMoreElements()) {
String name = (String)e.nextElement();
if (value.equals(properties.getProperty(name))) {
names.add(name);
}
}
return names;
}
}