ScriptURLStreamHandler.java

/*- 
 * Copyright Bogdan Mocanu, 2009
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 3
 * of the License, or (at your option) any later version.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 */

package zendo.playground.urlhandler;

import java.io.IOException;
import java.net.URL;
import java.net.URLConnection;
import java.net.URLStreamHandler;

/**
 * 
 *
 * @author mocanu
 */
public class ScriptURLStreamHandler extends URLStreamHandler {
    
    private static final String SCRIPT_PROTOCOL = "script";
    
    private ScriptService scriptService = new ScriptService();

    /**
     * {@inheritDoc}
     */
    @Override
    protected URLConnection openConnection( URL url ) throws IOException {
        String protocol = url.getProtocol();
        if ( !SCRIPT_PROTOCOL.equals( protocol )) {
            // reside to the classic URL handler
            URL classicURL = new URL( url.toString() );
            return classicURL.openConnection();
        }
        
        String host = url.getHost();
        String path = url.getPath();
        
        // convert and combine the host+part (just for demo)
        String scriptName = ( host + "." + path ).replace( '/', '.' );
        Script script = scriptService.getScript( scriptName );
        
        return new ScriptURLConnection( url, script );
    }

}