/*
* JBoss, Home of Professional Open Source
* Copyright 2010, Red Hat Inc., and individual contributors as indicated
* by the @authors tag. See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jboss.as.server.moduleservice;
import org.jboss.as.server.deployment.annotation.CompositeIndex;
import org.jboss.jandex.Index;
import org.jboss.jandex.IndexReader;
import org.jboss.logging.Logger;
import org.jboss.modules.Module;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import java.util.Enumeration;
import java.util.HashSet;
import java.util.Set;
/**
* Utility class for read a composite index from a system module.
*
* @author Stuart Douglas
*/
public class ModuleIndexBuilder {
private static final Logger logger = Logger.getLogger(ModuleIndexBuilder.class);
public static final String INDEX_LOCATION = "META-INF/jandex.idx";
public static CompositeIndex buildCompositeIndex(Module module) {
try {
final Enumeration<URL> resources = module.getClassLoader().getResources(INDEX_LOCATION);
if (!resources.hasMoreElements()) {
return null;
}
final Set<Index> indexes = new HashSet<Index>();
while (resources.hasMoreElements()) {
final URL url = resources.nextElement();
InputStream stream = url.openStream();
try {
IndexReader reader = new IndexReader(stream);
indexes.add(reader.read());
} finally {
stream.close();
}
}
return new CompositeIndex(indexes);
} catch (IOException e) {
throw new RuntimeException(e);
}
}
private ModuleIndexBuilder() {
}
}