//
   //  ========================================================================
   //  Copyright (c) 1995-2013 Mort Bay Consulting Pty. Ltd.
   //  ------------------------------------------------------------------------
   //  All rights reserved. This program and the accompanying materials
   //  are made available under the terms of the Eclipse Public License v1.0
   //  and Apache License v2.0 which accompanies this distribution.
   //
   //      The Eclipse Public License is available at
  //      http://www.eclipse.org/legal/epl-v10.html
  //
  //      The Apache License v2.0 is available at
  //      http://www.opensource.org/licenses/apache2.0.php
  //
  //  You may elect to redistribute this code under either of these licenses.
  //  ========================================================================
  //
  
  package org.eclipse.jetty.websocket.jsr356.annotations;
  
  import java.lang.reflect.Method;
  
  import javax.websocket.Decoder;
  import javax.websocket.OnError;
  
  import org.eclipse.jetty.websocket.jsr356.JsrSession;
  
  /**
   * Callable for {@link OnError} annotated methods
   */
  public class OnErrorCallable extends JsrCallable
  {
      private int idxThrowable = -1;
  
      public OnErrorCallable(Class<?> pojo, Method method)
      {
          super(pojo,method);
      }
  
      public OnErrorCallable(OnErrorCallable copy)
      {
          super(copy);
          this.idxThrowable = copy.idxThrowable;
      }
  
      public void call(Object endpoint, Throwable cause)
      {
          if (idxThrowable == (-1))
          {
              idxThrowable = findIndexForRole(Param.Role.ERROR_CAUSE);
              assertRoleRequired(idxThrowable,"Throwable");
          }
  
          if (idxThrowable >= 0)
          {
              super.args[idxThrowable] = cause;
          }
          super.call(endpoint,super.args);
      }
  
      @Override
      public void init(JsrSession session)
      {
          idxThrowable = findIndexForRole(Param.Role.ERROR_CAUSE);
          assertRoleRequired(idxThrowable,"Throwable");
          super.init(session);
      }
  
      @Override
      public void setDecoderClass(Class<? extends Decoder> decoderClass)
      {
          /* ignore, not relevant for onClose */
      }
  
  }