001    /*
002     * The Apache Software License, Version 1.1
003     *
004     * Copyright (c) 2001-2004 Caucho Technology, Inc.  All rights reserved.
005     *
006     * Redistribution and use in source and binary forms, with or without
007     * modification, are permitted provided that the following conditions
008     * are met:
009     *
010     * 1. Redistributions of source code must retain the above copyright
011     *    notice, this list of conditions and the following disclaimer.
012     *
013     * 2. Redistributions in binary form must reproduce the above copyright
014     *    notice, this list of conditions and the following disclaimer in
015     *    the documentation and/or other materials provided with the
016     *    distribution.
017     *
018     * 3. The end-user documentation included with the redistribution, if
019     *    any, must include the following acknowlegement:
020     *       "This product includes software developed by the
021     *        Caucho Technology (http://www.caucho.com/)."
022     *    Alternately, this acknowlegement may appear in the software itself,
023     *    if and wherever such third-party acknowlegements normally appear.
024     *
025     * 4. The names "Burlap", "Resin", and "Caucho" must not be used to
026     *    endorse or promote products derived from this software without prior
027     *    written permission. For written permission, please contact
028     *    info@caucho.com.
029     *
030     * 5. Products derived from this software may not be called "Resin"
031     *    nor may "Resin" appear in their names without prior written
032     *    permission of Caucho Technology.
033     *
034     * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
035     * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
036     * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
037     * DISCLAIMED.  IN NO EVENT SHALL CAUCHO TECHNOLOGY OR ITS CONTRIBUTORS
038     * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
039     * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
040     * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
041     * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
042     * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
043     * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
044     * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
045     *
046     * @author Scott Ferguson
047     */
048    
049    package com.caucho.burlap.client;
050    
051    import com.caucho.burlap.io.BurlapRemoteResolver;
052    
053    import java.io.IOException;
054    
055    /**
056     * Looks up remote objects in the proxy.
057     */
058    public class BurlapProxyResolver implements BurlapRemoteResolver {
059      private BurlapProxyFactory factory;
060      
061      /**
062       * Creates an uninitialized Burlap remote resolver.
063       */
064      public BurlapProxyResolver(BurlapProxyFactory factory)
065      {
066        this.factory = factory;
067      }
068    
069      /**
070       * Looks up a proxy object.
071       */
072      public Object lookup(String type, String url)
073        throws IOException
074      {
075        ClassLoader loader = Thread.currentThread().getContextClassLoader();
076    
077        try {
078          Class api = Class.forName(type, false, loader);
079    
080          return factory.create(api, url);
081        } catch (Exception e) {
082          throw new IOException(String.valueOf(e));
083        }
084      }
085    }