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A reactive Java web server.

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/*
 * 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.service;

import com.caucho.v5.amp.spi.MethodRefAmp;
import com.caucho.v5.amp.stub.MethodAmp;
import com.caucho.v5.amp.stub.MethodAmpWrapper;

/**
 * Sender for an actor ref.
 */
public class MethodAmpLazyProxy extends MethodAmpWrapper
{
  private MethodRefLazyProxy _methodRefLazy;
  
  private MethodAmp _delegate;

  public MethodAmpLazyProxy(MethodRefLazyProxy methodRefLazy)
  {
    _methodRefLazy = methodRefLazy;
  }

  @Override
  protected MethodAmp delegate()
  {
    MethodAmp delegate = _delegate;
    
    if (delegate == null) {
      MethodRefAmp methodRefDelegate = _methodRefLazy.delegate();
      
      if (methodRefDelegate != null) {
        delegate = _delegate = methodRefDelegate.method();
      }
    }
    
    return delegate;
  }
}