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/*******************************************************************************
* Copyright (c) 2003, 2005 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.osgi.framework.internal.core;
import java.io.IOException;
import java.net.URL;
import java.util.*;
import org.eclipse.osgi.service.resolver.ExportPackageDescription;
import org.osgi.framework.BundleException;
/**
* The System Bundle's BundleLoader. This BundleLoader is used by ImportClassLoaders
* to load a resource that is exported by the System Bundle.
*/
public class SystemBundleLoader extends BundleLoader {
public static final String EQUINOX_EE = "x-equinox-ee"; //$NON-NLS-1$
ClassLoader classLoader;
private HashSet eePackages;
/**
* @param bundle The system bundle.
* @param proxy The BundleLoaderProxy for the system bundle
* @throws BundleException On any error.
*/
protected SystemBundleLoader(BundleHost bundle, BundleLoaderProxy proxy) throws BundleException {
super(bundle, proxy);
ExportPackageDescription[] exports = proxy.getBundleDescription().getSelectedExports();
if (exports != null && exports.length > 0) {
eePackages = new HashSet(exports.length);
for (int i = 0; i < exports.length; i++)
if (((Integer) exports[i].getDirective(EQUINOX_EE)).intValue() >= 0)
eePackages.add(exports[i].getName());
}
this.classLoader = getClass().getClassLoader();
}
/**
* The ClassLoader that loads OSGi framework classes is used to find the class.
*/
public Class findClass(String name) throws ClassNotFoundException {
return classLoader.loadClass(name);
}
/**
* This method will always return null.
*/
public String findLibrary(String name) {
return null;
}
/**
* The ClassLoader that loads OSGi framework classes is used to find the class.
*/
Class findLocalClass(String name) {
Class clazz = null;
try {
clazz = classLoader.loadClass(name);
} catch (ClassNotFoundException e) {
// Do nothing, will return null
}
return clazz;
}
/**
* The ClassLoader that loads OSGi framework classes is used to find the resource.
*/
URL findLocalResource(String name) {
return classLoader.getResource(name);
}
/**
* The ClassLoader that loads OSGi framework classes is used to find the resource.
*/
Enumeration findLocalResources(String name) {
try {
return classLoader.getResources(name);
} catch (IOException e) {
return null;
}
}
/**
* The ClassLoader that loads OSGi framework classes is used to find the resource.
*/
public URL findResource(String name) {
return classLoader.getResource(name);
}
/**
* The ClassLoader that loads OSGi framework classes is used to find the resource.
*/
public Enumeration findResources(String name) throws IOException {
return classLoader.getResources(name);
}
/**
* Do nothing on a close.
*/
protected void close() {
// Do nothing.
}
public boolean isEEPackage(String pkgName) {
return eePackages.contains(pkgName);
}
}
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