Examples of org.w3c.jigsaw.http.HTTPException

org.w3c.jigsaw.http.HTTPException
All entities should throw an HTTPException when encoutering some problems. This kind of exception is the one that gets normally caught by clients, and result in sending back HTTP error messages to the client.

    d.parse () ;
      } catch (URLDecoderException e) {
    Reply error = request.makeReply(HTTP.BAD_REQUEST) ;
    error.setContent("Invalid request: "+
         "unable to decode form data.");
    throw new HTTPException (error) ;
      } catch (IOException e) {
    Reply error = request.makeReply(HTTP.BAD_REQUEST) ;
    error.setContent("Invalid request: unable to read form data.");
    throw new HTTPException (error) ;
      }
      return handle (request, d) ;
  }
  Reply reply = createDefaultReply(request, HTTP.OK);
  PageCompileOutputStream out = new PageCompileOutputStream();

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  } else if ( format.equals ("signed") ) {
      return LabelBureauInterface.FMT_SIGNED ;
  }
  Reply error = request.makeReply(HTTP.BAD_REQUEST) ;
  error.setContent ("Unknown label format: "+format);
  throw new HTTPException (error) ;
    }

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    {
  Reply error = request.makeReply(HTTP.NOT_ALLOWED) ;
  if ( allowed != null )
      error.setHeaderValue(Reply.H_ALLOW, allowed);
  error.setContent("Method POST not allowed on this resource.") ;
  throw new HTTPException (error) ;
    }

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    {
  if (labelb == null) {
      Reply reply = request.makeReply(HTTP.INTERNAL_SERVER_ERROR);
      reply.setContent("LabelBureauFrame not configured properly: "+
           "must be attached to a LabelBureauResource.");
      throw new HTTPException(reply);
  }
  // Get opt (only generic/normal/insert)
  String opt        = data.getValue("opt") ;
  String urls[]     = parseURLs (data.getMultipleValues ("u")) ;
  int    iformat   = parseFormat(request,data.getValue("format"));
  String services[] = parseURLs (data.getMultipleValues ("s")) ;
  if (services == null)
      services = labelb.getServices();
  if ((services == null) || (services.length == 0))
      return labelb.makePICSErrorReply(request, 
             "no-ratings \"unknown service\"");
  // Perform request
  if (labelb.getDebugFlag()) {
      System.out.println("******** PICS REQUEST ********");
      System.out.println("opt      : "+opt);
      System.out.println("format   : "+data.getValue("format"));
      System.out.print("services : ");
      for (int i=0; i < services.length; i++)
    System.out.println(services[i]);
      System.out.print("urls     : ");
      for (int i=0; i < urls.length; i++)
    System.out.println(urls[i]);
      System.out.println("******************************");
  }
  if ( opt.equals ("generic") ) {
      return labelb.getGenericLabels (request, iformat, 
              urls, services, data) ;
  } else if ( opt.equals ("normal") ) {
      return labelb.getNormalLabels (request, iformat, urls, 
             services, data) ;
  } else if ( opt.equals ("tree") ) {
      return labelb.getTreeLabels (request, iformat, urls, 
           services, data) ;
  } else  if ( opt.equals ("generic+tree") ) {
      return labelb.getGenericTreeLabels(request,iformat, 
                 urls, services, data);
  } else {
      Reply error = request.makeReply(HTTP.BAD_REQUEST);
      error.setContent ("Invalid label bureau query, bad option: "+opt);
      throw new HTTPException (error) ;
  }
    }

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  String method = request.getMethod();
  if (method.equals("DELETE")) {
      Reply error = request.makeReply(HTTP.FORBIDDEN);
      error.setContent("DELETE is forbidden on CVS controlled"+
           " directories in this version of JigEdit");
      throw new HTTPException (error);
  } 
  return super.delete(request);
    }

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          "Failed to create resource "+
          name +" : "+
          "Unable to create the appropriate file:"+
          request.getURLPath()+
          " this media type is not supported");
      throw new HTTPException (error);
        }
    } else if (rr == null) {
        Reply error = request.makeReply(HTTP.FORBIDDEN) ;
        error.setContent("You are not allowed to create resource "+
             name +" : "+
             dresource.getIdentifier()+
             " is not extensible.");
        throw new HTTPException (error);
    }
      } else if (request.getMethod().equals("MKCOL")) {
    String            name = ls.peekNextComponent() ;
    ResourceReference rr   = dresource.lookup(name);
    if (rr == null) {
        if (ls.countRemainingComponents() == 1) {
      request.setState(REMAINING_PATH, name);
      return true;
        } else {
      Reply error = request.makeReply(HTTP.CONFLICT) ;
      error.setContent("Can't create "+
           ls.getRemainingPath(true));
      throw new HTTPException (error);
        }
    }
      }
  }
  // normal lookup
  if ( super.lookupOther(ls, lr) ) {
      if ( ! ls.isDirectory() && ! ls.isInternal() ) {
    // The directory lookup URL doesn't end with a slash:
    if ( request == null ) {
        lr.setTarget(null);
        return true;
    } else if (! acceptRedirect(request)) {
        return true;
    }
    URL url = null;
    try {
        if ((request != null ) && 
      request.hasState(Request.ORIG_URL_STATE)) {
      URL oldurl;
      oldurl = (URL)request.getState(Request.ORIG_URL_STATE);
      url = new URL(oldurl, oldurl.getFile() + "/");
        } else {
      url = (ls.hasRequest() 
             ? getURL(request)
             : new URL(getServer().getURL(), 
           resource.getURLPath()));
        }
    } catch (MalformedURLException ex) {
        getServer().errlog(this, "unable to build full URL.");
        throw new HTTPException("Internal server error");
    }
    String msg = "Invalid requested URL: the directory resource "+
        " you are trying to reach is available only through "+
        " its full URL: <a href=\""+
        url + "\">" + url + "</a>.";

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        error.setContent ("<h1>Document not found</h1>"+
                 "<p>The document "+
              request.getURL()+
              " is indexed but not available."+
              "<p>The server is misconfigured.") ;
        throw new HTTPException (error) ;
    }
    refresh = 
      (dresource.getDirectory().lastModified() > 
                                             listing_stamp);
      }

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          "Failed to create resource "+
          name +" : "+
          "Unable to create the appropriate file:"+
          request.getURLPath()+
          " this media type is not supported");
      throw new HTTPException (error);
        }
    } else if (rr == null) {
        Reply error = request.makeReply(HTTP.FORBIDDEN) ;
        error.setContent("You are not allowed to create resource "+
             name +" : "+
             dresource.getIdentifier()+
             " is not extensible.");
        throw new HTTPException (error);
    }
      }
  }
  if ( super.lookup(ls, lr) ) {
      if ( ! ls.isDirectory() && ! ls.isInternal() ) {
    // The directory lookup URL doesn't end with a slash:
    Request request = (Request)ls.getRequest() ;
    if ( request == null ) {
        lr.setTarget(null);
        return true;
    }
    URL url = null;
    try {
        if ((request != null ) && 
      request.hasState(Request.ORIG_URL_STATE)) {
      URL oldurl;
      oldurl = (URL)request.getState(Request.ORIG_URL_STATE);
      url = new URL(oldurl, oldurl.getFile() + "/");
        } else {
      url = (ls.hasRequest() 
             ? getURL(request)
             : new URL(getServer().getURL(), 
           resource.getURLPath()));
        }
    } catch (MalformedURLException ex) {
        getServer().errlog(this, "unable to build full URL.");
        throw new HTTPException("Internal server error");
    }
    String msg = "Invalid requested URL: the directory resource "+
        " you are trying to reach is available only through "+
        " its full URL: <a href=\""+
        url + "\">" + url + "</a>.";

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      return getDirectoryResource(request);
  } else {
      // we don't manage this kind of resource
      Reply error = request.makeReply(HTTP.NOT_IMPLEMENTED) ;
      error.setContent("Method GET not implemented.") ;
      throw new HTTPException (error) ;
  }
    }

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    error.setContent ("<h1>Document Gone</h1>"+
          "<p>The document "+
          request.getURL()+
          " is indexed but no longer available.</p>"+
          "<p>"+ex.getMessage()+"</p>");
    throw new HTTPException (error) ;
      }
  }
  // Emit an error back:
  Reply error = request.makeReply(HTTP.GONE) ;
  error.setContentMD5(null);

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