/*
* © Copyright IBM Corp. 2012
*
* Licensed 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 com.ibm.commons.runtime.properties;
import java.io.IOException;
import java.net.URL;
import java.util.Enumeration;
import java.util.Properties;
import com.ibm.commons.runtime.Application;
import com.ibm.commons.util.StringUtil;
/**
* SBT Properties factory.
*
* @author Philippe Riand
*/
public class MetaResourcePropertiesFactory extends AbstractPropertiesFactory {
public static final String DEFAULT_PROPERTIES = "META-INF/sbt.properties";
private final Properties properties;
public MetaResourcePropertiesFactory() {
this(DEFAULT_PROPERTIES);
}
public MetaResourcePropertiesFactory(String fileName) {
this.properties = readProperiesFromWebResource(fileName);
}
@Override
public String getProperty(String name) {
return properties!=null ? properties.getProperty(name) : null;
}
public Properties readProperiesFromWebResource(String fileName) {
if(StringUtil.isEmpty(fileName)) {
return null;
}
// We read the resource
Application app = Application.getUnchecked();
if(app==null) {
return null;
}
ClassLoader loader = app.getClassLoader();
Properties properties = new Properties();
try {
Enumeration<URL> resources = loader.getResources(fileName);
while (resources.hasMoreElements()) {
URL url = resources.nextElement();
properties.load(url.openStream());
}
} catch (IOException ioe) {
}
return properties.isEmpty() ? null : properties;
}
}