/*
 * Created on Feb 21, 2007
 * Copyright (C) 2001-6, Anthony Harrison anh23@pitt.edu (jactr.org) This library is free
 * software; you can redistribute it and/or modify it under the terms of the GNU
 * Lesser General Public License as published by the Free Software Foundation;
 * either version 2.1 of the License, or (at your option) any later version.
 * This library 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. See the GNU Lesser General Public License for more
 * details. You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */
package org.jactr.tools.async.message.event.state;

import java.io.PrintWriter;
import java.io.Serializable;
import java.io.StringWriter;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.jactr.tools.async.message.BaseMessage;
/**
 * @author developer
 *
 */
public class ModelStateEvent extends BaseMessage implements IModelStateEvent, Serializable
{
  /**
   * 
   */
  private static final long serialVersionUID = -8424278848820498054L;

  /**
   logger definition
   */
  static private final Log LOGGER = LogFactory.getLog(ModelStateEvent.class);

  private State _state;
  private String _modelName;
  private long _systemTime;
  private double _simulationTime;

  private String            _exception;
  
  public ModelStateEvent(String modelName, State state, double simulationTime)
  {
    _state = state;
    _modelName = modelName;
    _simulationTime = simulationTime;
    _systemTime = System.currentTimeMillis();
  }
  
  public ModelStateEvent(String modelName, Throwable exception,
      double simulationTime)
  {
    this(modelName, State.STOPPED, simulationTime);
    StringWriter writer = new StringWriter();
    exception.printStackTrace(new PrintWriter(writer));
    writer.flush();
    _exception = writer.toString();
  }

  public String getException()
  {
    return _exception;
  }
  
  /**
   * @see org.jactr.tools.async.message.command.state.IStateCommand#getSimulationTime()
   */
  public double getSimulationTime()
  {
    return _simulationTime;
  }

  /**
   * @see org.jactr.tools.async.message.command.state.IStateCommand#getSystemTime()
   */
  public long getSystemTime()
  {
    return _systemTime;
  }
  
  public State getState()
  {
    return _state;
  }
  
  public String getModelName()
  {
    return _modelName;
  }

  @Override
  public String toString()
  {
    StringBuilder sb = new StringBuilder("[");
    sb.append(getClass().getSimpleName()).append(":").append(_state).append("]");
    return sb.toString();
  }
}