/**
* Open Wonderland
*
* Copyright (c) 2010, Open Wonderland Foundation, All Rights Reserved
*
* Redistributions in source code form must reproduce the above
* copyright and this condition.
*
* The contents of this file are subject to the GNU General Public
* License, Version 2 (the "License"); you may not use this file
* except in compliance with the License. A copy of the License is
* available at http://www.opensource.org/licenses/gpl-license.php.
*
* The Open Wonderland Foundation designates this particular file as
* subject to the "Classpath" exception as provided by the Open Wonderland
* Foundation in the License file that accompanied this code.
*/
/**
* Project Wonderland
*
* Copyright (c) 2004-2009, Sun Microsystems, Inc., All Rights Reserved
*
* Redistributions in source code form must reproduce the above
* copyright and this condition.
*
* The contents of this file are subject to the GNU General Public
* License, Version 2 (the "License"); you may not use this file
* except in compliance with the License. A copy of the License is
* available at http://www.opensource.org/licenses/gpl-license.php.
*
* Sun designates this particular file as subject to the "Classpath"
* exception as provided by Sun in the License file that accompanied
* this code.
*/
package org.jdesktop.wonderland.client.protocols.wlj;
import java.io.IOException;
import java.io.InputStream;
import java.net.URISyntaxException;
import java.net.URL;
import java.net.URLConnection;
import org.jdesktop.wonderland.client.assetmgr.Asset;
import org.jdesktop.wonderland.client.assetmgr.AssetInputStream;
import org.jdesktop.wonderland.client.assetmgr.AssetManager;
import org.jdesktop.wonderland.client.assetmgr.modules.ModuleAssetRepositoryFactory;
import org.jdesktop.wonderland.common.JarURI;
/**
* The WljURLConnection class is the URL connection to URLs that have the 'wlj'
* protocol. This is used for Wonderland plugin JARs and interfaces with the asset
* manager to properly load resources.
* <p>
* The format of the URL is:
* <p>
* wlj://<module name>/<jar path>
* <p>
* where <module name> is the name of the module that contains the asset, and
* <jar path> is the relative path of the jar within the module and has the
* form: <plugin name>/<jar type>/<jar name>, where <plugin name> is the unique
* name of the plugin, <jar type> is either "client", "server", or "common",
* and <jar name> is the name of the jar file (with the .jar extension)
*
* @author paulby
* @author Jordan Slott <jslott@dev.java.net>
*/
public class WljURLConnection extends URLConnection {
/**
* Constructor, takes the 'wlj' protocol URL as an argument
*
* @param url A URL with a 'wlj' protocol
*/
public WljURLConnection(URL url) {
super(url);
this.setUseCaches(false);
}
@Override
public void connect() throws IOException {
}
@Override
public InputStream getInputStream() throws IOException {
try {
// Since we know this asset belongs to a module, first create a
// factory to handle its loading.
JarURI uri = new JarURI(this.url.toExternalForm());
ModuleAssetRepositoryFactory factory = new ModuleAssetRepositoryFactory(uri);
// Next, we ask the asset manager for the asset and wait for it to
// be loaded
Asset asset = AssetManager.getAssetManager().getAsset(uri, factory);
if (asset == null || AssetManager.getAssetManager().waitForAsset(asset) == false) {
throw new IOException("No such asset " + url);
}
return new AssetInputStream(asset);
} catch (URISyntaxException excp) {
IOException ioe = new IOException("Error in URI syntax");
ioe.initCause(excp);
throw ioe;
}
}
}