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/*******************************************************************************
* Copyright (c) 2003, 2016 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.internal.loader;
import java.io.IOException;
import java.net.URL;
import java.util.Collection;
import java.util.Enumeration;
import org.eclipse.osgi.container.*;
import org.eclipse.osgi.container.ModuleContainerAdaptor.ContainerEvent;
import org.eclipse.osgi.internal.framework.EquinoxConfiguration;
import org.eclipse.osgi.internal.framework.EquinoxContainer;
import org.eclipse.osgi.storage.BundleInfo.Generation;
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"; //$NON-NLS-1$
final ClassLoader classLoader;
final ModuleClassLoader moduleClassLoader;
public SystemBundleLoader(ModuleWiring wiring, EquinoxContainer container, ClassLoader frameworkLoader) {
super(wiring, container, frameworkLoader.getParent());
this.classLoader = frameworkLoader;
this.moduleClassLoader = new SystemModuleClassLoader(classLoader.getParent(), container.getConfiguration(), this, (Generation) wiring.getRevision().getRevisionInfo());
}
/**
* The ClassLoader that loads OSGi framework classes is used to find the class.
* This method never gets called because there is no BundleClassLoader for the framework.
*/
public Class<?> findClass(String name) throws ClassNotFoundException {
Class<?> result = findLocalClass(name);
if (result == null)
throw new ClassNotFoundException(name);
return result;
}
/**
* The ClassLoader that loads OSGi framework classes is used to find the class.
*/
public Class<?> findLocalClass(String name) {
try {
return classLoader.loadClass(name);
} catch (ClassNotFoundException e) {
// do nothing
return null;
}
}
/**
* The ClassLoader that loads OSGi framework classes is used to find the resource.
*/
public URL findLocalResource(String name) {
return classLoader.getResource(name);
}
/**
* The ClassLoader that loads OSGi framework classes is used to find the resource.
*/
public Enumeration<URL> findLocalResources(String name) {
try {
return classLoader.getResources(name);
} catch (IOException e) {
// do nothing
return null;
}
}
/**
* The ClassLoader that loads OSGi framework classes is used to find the resource.
* This method never gets called because there is no ModuleClassLoader for the framework.
*/
public URL findResource(String name) {
return findLocalResource(name);
}
/**
* The ClassLoader that loads OSGi framework classes is used to find the resource.
* This method never gets called because there is no ModuleClassLoader for the framework.
* @throws IOException
*/
public Enumeration<URL> findResources(String name) throws IOException {
return findLocalResources(name);
}
@Override
public ClassLoader getClassLoader() {
return classLoader;
}
@Override
public ModuleClassLoader getModuleClassLoader() {
return moduleClassLoader;
}
@Override
void loadClassLoaderFragments(Collection<ModuleRevision> fragments) {
moduleClassLoader.loadFragments(fragments);
}
class SystemModuleClassLoader extends EquinoxClassLoader {
public SystemModuleClassLoader(ClassLoader parent, EquinoxConfiguration configuration, BundleLoader delegate, Generation generation) {
super(parent, configuration, delegate, generation);
}
@Override
protected Class<?> loadClass(String name, boolean resolve) throws ClassNotFoundException {
return SystemBundleLoader.this.findClass(name);
}
@Override
public void loadFragments(Collection<ModuleRevision> fragments) {
Module systemModule = getWiring().getRevision().getRevisions().getModule();
try {
this.getGeneration().getBundleInfo().getStorage().getExtensionInstaller().addExtensionContent(fragments, systemModule);
} catch (BundleException e) {
systemModule.getContainer().getAdaptor().publishContainerEvent(ContainerEvent.ERROR, systemModule, e);
}
getClasspathManager().loadFragments(fragments);
}
}
}
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