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A reactive Java web server.
There is a newer version: 1.0.1
/*
 * Copyright (c) 1998-2015 Caucho Technology -- all rights reserved
 *
 * This file is part of Baratine(TM)
 *
 * Each copy or derived work must preserve the copyright notice and this
 * notice unmodified.
 *
 * Baratine is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * Baratine is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
 * of NON-INFRINGEMENT.  See the GNU General Public License for more
 * details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Baratine; if not, write to the
 *
 *   Free Software Foundation, Inc.
 *   59 Temple Place, Suite 330
 *   Boston, MA 02111-1307  USA
 *
 * @author Scott Ferguson
 */

package com.caucho.v5.amp.stub;

import java.lang.annotation.Annotation;
import java.lang.reflect.Method;
import java.util.ArrayList;

import com.caucho.v5.amp.spi.HeadersAmp;

import io.baratine.pipe.ResultPipeIn;
import io.baratine.pipe.ResultPipeOut;
import io.baratine.service.Result;
import io.baratine.stream.ResultStream;


/**
 * handle to an actor method.
 */
public interface MethodAmp
{
  String name();
  
  boolean isClosed();
  
  default boolean isValid()
  {
    return true;
  }
  
  default boolean isDirect()
  {
    return false;
  }

  default boolean isModify()
  {
    return false;
  }
  
  Annotation[] getAnnotations();
  
  Class getReturnType();

  ParameterAmp []parameters();
  
  /*
  Class []getParameterTypes();
  
  Type []getGenericParameterTypes();
  
  Annotation [][]getParameterAnnotations();
  */
  
  default boolean isVarArgs()
  {
    return false;
  }
  
  //
  // send methods
  //
  
  default void send(HeadersAmp headers,
                    StubAmp actor)
  {
    send(headers, actor, new Object[0]);
  }

  default void send(HeadersAmp headers,
                    StubAmp actor,
                    Object arg1)
  {
    send(headers, actor, new Object[] { arg1 });
  }

  default void send(HeadersAmp headers,
                    StubAmp actor,
                    Object arg1, 
                    Object arg2)
  {
    send(headers, actor, new Object[] { arg1, arg2 });
  }

  default void send(HeadersAmp headers,
                    StubAmp actor,
                    Object arg1,
                    Object arg2, 
                    Object arg3)
  {
    send(headers, actor, new Object[] { arg1, arg2, arg3 });
  }

  void send(HeadersAmp headers,
            StubAmp actor,
            Object []args);
  
  //
  // query methods
  //
  
  default void query(HeadersAmp headers,
                     Result result,
                     StubAmp actor)
  {
    query(headers, result, actor, new Object[0]);
  }
  
  default void query(HeadersAmp headers,
                     Result result,
                     StubAmp actor,
                     Object arg1)
  {
    query(headers, result, actor, new Object[] { arg1 });
  }
  
  default void query(HeadersAmp headers,
                     Result result,
                     StubAmp actor,
                     Object arg1,
                     Object arg2)
  {
    query(headers, result, actor, new Object[] { arg1, arg2 });
  }
  
  default void query(HeadersAmp headers,
                     Result result,
                     StubAmp actor,
                     Object arg1,
                     Object arg2,
                     Object arg3)
  {
    query(headers, result, actor, new Object[] { arg1, arg2, arg3 });
  }
  
  void query(HeadersAmp headers,
             Result result,
             StubAmp actor,
             Object []args);
  
  //
  // map-reduce/stream methods
  //
  
   void stream(HeadersAmp headers,
                  ResultStream result,
                  StubAmp actor,
                  Object []args);
  
  //
  // pipe methods
  //
  
   void outPipe(HeadersAmp headers,
                   ResultPipeOut result,
                   StubAmp actor,
                   Object []args);
  
   void inPipe(HeadersAmp headers,
                  ResultPipeIn result,
                  StubAmp actor,
                  Object []args);

  static Class[] paramTypes(Method targetMethod)
  {
    ArrayList> paramList = new ArrayList<>();
    
    for (Class param : targetMethod.getParameterTypes()) {
      if (Result.class.equals(param)
          || ResultStream.class.equals(param)
          || ResultPipeIn.class.equals(param)
          || ResultPipeOut.class.equals(param)) {
        continue;
      }
      
      paramList.add(param);
    }
    
    Class []paramArray = new Class[paramList.size()];
    paramList.toArray(paramArray);
    
    return paramArray;
  }
}