/*
* $Id$
*
* 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.struts2.osgi;
import java.io.IOException;
import java.net.URL;
import java.util.*;
import org.osgi.framework.Bundle;
import org.osgi.framework.BundleContext;
import com.opensymphony.xwork2.ObjectFactory;
import com.opensymphony.xwork2.ActionContext;
import com.opensymphony.xwork2.inject.Inject;
import com.opensymphony.xwork2.config.Configuration;
import com.opensymphony.xwork2.config.ConfigurationException;
import com.opensymphony.xwork2.config.PackageProvider;
import com.opensymphony.xwork2.config.entities.PackageConfig;
import com.opensymphony.xwork2.config.impl.DefaultConfiguration;
import com.opensymphony.xwork2.config.providers.XmlConfigurationProvider;
import com.opensymphony.xwork2.util.location.Location;
import com.opensymphony.xwork2.util.logging.Logger;
import com.opensymphony.xwork2.util.logging.LoggerFactory;
/**
* Package loader implementation that loads resources from a bundle
*/
public class BundlePackageLoader implements PackageLoader {
private static final Logger LOG = LoggerFactory.getLogger(BundlePackageLoader.class);
public List<PackageConfig> loadPackages(Bundle bundle, BundleContext bundleContext, ObjectFactory objectFactory, Map<String, PackageConfig> pkgConfigs) throws ConfigurationException {
Configuration config = new DefaultConfiguration("struts.xml");
BundleConfigurationProvider prov = new BundleConfigurationProvider("struts.xml", bundle, bundleContext);
for (PackageConfig pkg : pkgConfigs.values()) {
config.addPackageConfig(pkg.getName(), pkg);
}
prov.setObjectFactory(objectFactory);
prov.init(config);
prov.loadPackages();
List<PackageConfig> list = new ArrayList<PackageConfig>(config.getPackageConfigs().values());
list.removeAll(pkgConfigs.values());
return list;
}
static class BundleConfigurationProvider extends XmlConfigurationProvider {
private Bundle bundle;
private BundleContext bundleContext;
public BundleConfigurationProvider(String filename, Bundle bundle, BundleContext bundleContext) {
super(filename, false);
this.bundle = bundle;
this.bundleContext = bundleContext;
}
public BundleConfigurationProvider(String filename) {
super(filename);
}
@Override
protected Iterator<URL> getConfigurationUrls(String fileName) throws IOException {
Enumeration<URL> e = bundle.getResources("struts.xml");
return e.hasMoreElements() ? new EnumeratorIterator<URL>(e) : null;
}
}
static class EnumeratorIterator<E> implements Iterator<E> {
Enumeration<E> e = null;
public EnumeratorIterator(Enumeration<E> e) {
this.e = e;
}
public boolean hasNext() {
return e.hasMoreElements();
}
public E next() {
return e.nextElement();
}
public void remove() {
throw new UnsupportedOperationException();
}
}
}