Beispiel #1
0
  /**
   * Handles the object invocation.
   *
   * @param proxy the proxy object to invoke
   * @param method the method to call
   * @param args the arguments to the proxy object
   */
  public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
    String methodName = method.getName();
    Class[] params = method.getParameterTypes();

    // equals and hashCode are special cased
    if (methodName.equals("equals") && params.length == 1 && params[0].equals(Object.class)) {
      Object value = args[0];
      if (value == null || !Proxy.isProxyClass(value.getClass())) return new Boolean(false);

      BurlapProxy handler = (BurlapProxy) Proxy.getInvocationHandler(value);

      return new Boolean(_url.equals(handler.getURL()));
    } else if (methodName.equals("hashCode") && params.length == 0)
      return new Integer(_url.hashCode());
    else if (methodName.equals("getBurlapType"))
      return proxy.getClass().getInterfaces()[0].getName();
    else if (methodName.equals("getBurlapURL")) return _url.toString();
    else if (methodName.equals("toString") && params.length == 0)
      return "[BurlapProxy " + _url + "]";

    InputStream is = null;

    URLConnection conn = null;
    HttpURLConnection httpConn = null;
    try {
      conn = _factory.openConnection(_url);
      conn.setRequestProperty("Content-Type", "text/xml");

      OutputStream os;

      try {
        os = conn.getOutputStream();
      } catch (Exception e) {
        throw new BurlapRuntimeException(e);
      }

      BurlapOutput out = _factory.getBurlapOutput(os);

      if (!_factory.isOverloadEnabled()) {
      } else if (args != null) methodName = methodName + "__" + args.length;
      else methodName = methodName + "__0";

      if (log.isLoggable(Level.FINE))
        log.fine(this + " calling " + methodName + " (" + method + ")");

      out.call(methodName, args);

      try {
        os.flush();
      } catch (Exception e) {
        throw new BurlapRuntimeException(e);
      }

      if (conn instanceof HttpURLConnection) {
        httpConn = (HttpURLConnection) conn;
        int code = 500;

        try {
          code = httpConn.getResponseCode();
        } catch (Exception e) {
        }

        if (code != 200) {
          StringBuffer sb = new StringBuffer();
          int ch;

          try {
            is = httpConn.getInputStream();

            if (is != null) {
              while ((ch = is.read()) >= 0) sb.append((char) ch);

              is.close();
            }

            is = httpConn.getErrorStream();
            if (is != null) {
              while ((ch = is.read()) >= 0) sb.append((char) ch);
            }
          } catch (FileNotFoundException e) {
            throw new BurlapRuntimeException(code + ": " + String.valueOf(e));
          } catch (IOException e) {
          }

          if (is != null) is.close();

          throw new BurlapProtocolException(code + ": " + sb.toString());
        }
      }

      is = conn.getInputStream();

      AbstractBurlapInput in = _factory.getBurlapInput(is);

      return in.readReply(method.getReturnType());
    } catch (BurlapProtocolException e) {
      throw new BurlapRuntimeException(e);
    } finally {
      try {
        if (is != null) is.close();
      } catch (IOException e) {
      }

      if (httpConn != null) httpConn.disconnect();
    }
  }
  public AbstractBurlapInput getBurlapInput(InputStream is) {
    AbstractBurlapInput in = new BurlapInput(is);
    in.setRemoteResolver(getRemoteResolver());

    return in;
  }