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Posted to dev@velocity.apache.org by ge...@apache.org on 2001/11/25 01:33:10 UTC

cvs commit: jakarta-velocity/whiteboard/geir URLResourceLoader.java velocity.properties

geirm       01/11/24 16:33:10

  Added:       whiteboard/geir URLResourceLoader.java velocity.properties
  Log:
  to play with...
  
  Revision  Changes    Path
  1.1                  jakarta-velocity/whiteboard/geir/URLResourceLoader.java
  
  Index: URLResourceLoader.java
  ===================================================================
  package org.apache.velocity.runtime.resource.loader;
  
  /*
   * The Apache Software License, Version 1.1
   *
   * Copyright (c) 2001 The Apache Software Foundation.  All rights
   * reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   *
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   *
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in
   *    the documentation and/or other materials provided with the
   *    distribution.
   *
   * 3. The end-user documentation included with the redistribution, if
   *    any, must include the following acknowlegement:
   *       "This product includes software developed by the
   *        Apache Software Foundation (http://www.apache.org/)."
   *    Alternately, this acknowlegement may appear in the software itself,
   *    if and wherever such third-party acknowlegements normally appear.
   *
   * 4. The names "The Jakarta Project", "Tomcat", and "Apache Software
   *    Foundation" must not be used to endorse or promote products derived
   *    from this software without prior written permission. For written
   *    permission, please contact apache@apache.org.
   *
   * 5. Products derived from this software may not be called "Apache"
   *    nor may "Apache" appear in their names without prior written
   *    permission of the Apache Group.
   *
   * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
   * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
   * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
   * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
   * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
   * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
   * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
   * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
   * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
   * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   * SUCH DAMAGE.
   * ====================================================================
   *
   * This software consists of voluntary contributions made by many
   * individuals on behalf of the Apache Software Foundation.  For more
   * information on the Apache Software Foundation, please see
   * <http://www.apache.org/>.
   */
  
  import java.net.URL;
  import java.net.URLConnection;
  
  import java.io.InputStream;
  import java.util.Vector;
  
  import org.apache.velocity.runtime.resource.Resource;
  import org.apache.velocity.exception.ResourceNotFoundException;
  
  import org.apache.commons.collections.ExtendedProperties;
  
  /**
   * This is a simple URL-based loader.
   * 
   * @author <a href="mailto:geirm@apache.org">Geir Magnusson Jr.</a>
   * @version $Id: URLResourceLoader.java,v 1.1 2001/11/25 00:33:10 geirm Exp $
   */
  public class URLResourceLoader extends ResourceLoader
  {
      private Vector urlroots = new Vector();
  
      public void init( ExtendedProperties configuration)
      {
          rsvc.info("URLResourceLoader : initialization starting.");
  
          urlroots = configuration.getVector("root");
         
          for( int i=0; i < urlroots.size(); i++)
          {
              rsvc.info("URLResourceLoader : adding root '" + (String) urlroots.get(i) + "'");
          }        
   
          rsvc.info("URLResourceLoader : initialization complete.");
      }
  
      /**
       * Get an InputStream so that the Runtime can build a
       * template with it.
       *
       * @param url  url of template to fetch bytestream of
       * @return InputStream containing the template
       * @throws ResourceNotFoundException if template not found
       *         in the file template path.
       */
      public synchronized InputStream getResourceStream( String url )
          throws ResourceNotFoundException
      {
          for( int i=0; i < urlroots.size(); i++)
          {
              try
              {
                  String full = (String) urlroots.get( i );
                  
                  URL u = new URL( full + url );
                  URLConnection conn = u.openConnection();
                  InputStream inputStream = conn.getInputStream();
                  
                  if (inputStream != null)
                  {
                      return inputStream;
                  }
              }
              catch( Exception e )
              {
                  /*
                   *  for now, just ignore.  we can prollie do 
                   *   something better here..
                   */
              }
          }
  
          String msg = "URLResourceLoader :  Error: cannot find resource " +
              url;
         
          rsvc.error( "URLResourceLoader : " + msg );
  
          throw new ResourceNotFoundException( msg );
      }
      
      /**
       * How to keep track of all the modified times
       * across the paths.
       */
      public boolean isSourceModified(Resource resource)
      {
          return true;
      }
  
      public long getLastModified(Resource resource)
      {
          return 0;
      }
  }
  
  
  
  1.1                  jakarta-velocity/whiteboard/geir/velocity.properties
  
  Index: velocity.properties
  ===================================================================
  
  resource.loader = url
  url.resource.loader.class = org.apache.velocity.runtime.resource.loader.URLResourceLoader
  url.resource.loader.root = http://localhost:8080/veltest/, file:///opt/
  
  
  
  

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