//
   //  ========================================================================
   //  Copyright (c) 1995-2016 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.io.IOException;
  import java.io.Reader;
  import java.lang.reflect.Method;
  
  import javax.websocket.DecodeException;
  import javax.websocket.Decoder;
  import javax.websocket.OnMessage;
  
  import org.eclipse.jetty.websocket.jsr356.JsrSession;
  import org.eclipse.jetty.websocket.jsr356.annotations.Param.Role;
  
  /**
   * Callable for {@link OnMessage} annotated methods for {@link Reader} based text message objects
   * 
   * @see javax.websocket.Decoder.TextStream
   */
  public class OnMessageTextStreamCallable extends OnMessageCallable
  {
      private Decoder.TextStream<?> textDecoder;
  
      public OnMessageTextStreamCallable(Class<?> pojo, Method method)
      {
          super(pojo,method);
      }
  
      /**
       * Copy Constructor
       * @param copy the callable to copy from
       */
      public OnMessageTextStreamCallable(OnMessageCallable copy)
      {
          super(copy);
      }
  
      public Object call(Object endpoint, Reader reader) throws DecodeException, IOException
      {
          // Bug-430088 - streaming based calls are dispatched.
          // create a copy of the calling args array to prevent concurrency problems.
          Object copy[] = new Object[super.args.length];
          System.arraycopy(super.args,0,copy,0,super.args.length);
          copy[idxMessageObject] = textDecoder.decode(reader);
          return super.call(endpoint,copy);
      }
  
      @Override
      public void init(JsrSession session)
      {
          idxMessageObject = findIndexForRole(Role.MESSAGE_TEXT_STREAM);
          assertRoleRequired(idxMessageObject,"Text Reader Message Object");
          super.init(session);
          assertDecoderRequired();
          textDecoder = (Decoder.TextStream<?>)getDecoder();
      }
  }