/*
* $Id$
*
* Copyright (C) 2003-2014 JNode.org
*
* This library 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 library 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 library; If not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
package org.jnode.plugin.model;
import java.net.URL;
import java.nio.ByteBuffer;
import java.util.List;
import org.jnode.bootlog.BootLogInstance;
import org.jnode.nanoxml.XMLElement;
import org.jnode.plugin.FragmentDescriptor;
import org.jnode.plugin.PluginException;
import org.jnode.util.Version;
import org.jnode.vm.ResourceLoader;
/**
* @author Ewout Prangsma (epr@users.sourceforge.net)
*/
final class FragmentDescriptorModel extends PluginDescriptorModel implements
FragmentDescriptor, ResourceLoader {
private final String pluginId;
private final Version pluginVersion;
private PluginDescriptorModel plugin;
/**
* @param jarFile
* @param e
* @throws PluginException
*/
public FragmentDescriptorModel(PluginJar jarFile, XMLElement e)
throws PluginException {
super(jarFile, e);
this.pluginId = getAttribute(e, "plugin-id", true);
this.pluginVersion = new Version(getAttribute(e, "plugin-version", true));
}
/**
* @param e
* @throws PluginException
*/
public FragmentDescriptorModel(XMLElement e) throws PluginException {
this(null, e);
}
/**
* @see org.jnode.vm.ResourceLoader#containsResource(java.lang.String)
*/
public boolean containsResource(String resourceName) {
final PluginJar jar = getJarFile();
if (jar != null) {
return jar.containsResource(resourceName);
} else {
return false;
}
}
/**
* @see org.jnode.vm.ResourceLoader#getResourceAsBuffer(java.lang.String)
*/
public ByteBuffer getResourceAsBuffer(String resourceName) {
final PluginJar jar = getJarFile();
if (jar != null) {
return jar.getResourceAsBuffer(resourceName);
} else {
return null;
}
}
/**
* @see org.jnode.plugin.FragmentDescriptor#getPluginId()
*/
public final String getPluginId() {
return pluginId;
}
/**
* @see org.jnode.plugin.FragmentDescriptor#getPluginVersion()
*/
public final Version getPluginVersion() {
return pluginVersion;
}
/**
* @see org.jnode.vm.ResourceLoader#getResource(java.lang.String)
*/
public URL getResource(String resourceName) {
final PluginJar jar = getJarFile();
if (jar != null) {
return jar.getResource(resourceName);
} else {
return null;
}
}
/**
* @see org.jnode.plugin.model.PluginDescriptorModel#getPluginClassLoader()
*/
public ClassLoader getPluginClassLoader() {
if (plugin != null) {
return plugin.getPluginClassLoader();
} else {
throw new IllegalStateException("Fragment not yet resolved");
}
}
/**
* @throws PluginException
* @see org.jnode.plugin.model.PluginDescriptorModel#initializeRequiresList(java.util.List)
*/
protected void initializeRequiresList(List<PluginPrerequisiteModel> list,
XMLElement e) throws PluginException {
final String pluginId = getAttribute(e, "plugin-id", true);
final Version pluginVersion = new Version(getAttribute(e, "plugin-version", true));
list.add(new PluginPrerequisiteModel(this, pluginId, pluginVersion));
}
/**
* @see org.jnode.plugin.model.PluginDescriptorModel#resolve(org.jnode.plugin.model.PluginRegistryModel)
*/
public void resolve(PluginRegistryModel registry) throws PluginException {
super.resolve(registry);
plugin = (PluginDescriptorModel) registry.getPluginDescriptor(pluginId);
if (plugin == null) {
throw new PluginException("Plugin " + getPluginId() + " not found");
}
BootLogInstance.get().info("Resolve " + getId());
plugin.add(this);
}
/**
* @see org.jnode.plugin.model.PluginDescriptorModel#unresolve(org.jnode.plugin.model.PluginRegistryModel)
*/
protected void unresolve(PluginRegistryModel registry) throws PluginException {
if (plugin != null) {
plugin.remove(this);
plugin = null;
}
BootLogInstance.get().info("Unresolve " + getId());
super.unresolve(registry);
}
/**
* @see org.jnode.plugin.model.PluginDescriptorModel#isFragment()
*/
public boolean isFragment() {
return true;
}
}