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/home/pauldt/projects/IDEA/IDEA-ALL/IDEA-DEV/Core/Agent/Includes/Message.hh

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// -*- Mode: c++ -*-
//     File: $Source: /home/cvs/ISG-Repository/IDEA-DEV/Core/Agent/Includes/Message.hh,v $
//      Tag: $Name: DR_01_11_06 $
//      CVS: $Id: Message.hh,v 1.4 2005/12/30 22:05:32 rijsman Exp $
//     Info: $CVSROOT/IDEA-DEV/COPYRIGHT

#ifndef _HEADER_MESSAGE_HEADER_
#define _HEADER_MESSAGE_HEADER_

#include "ProtoType.hh"
#include "TimeBasics.hh"
#include "Utilities.hh"

namespace IDEA
{
  class MessageData;

  class Message:
    public Prototype
  {
    friend class MessageHandle;
  public:
    // do not mess with the numbers assigned unless you can guarentee that each combination of enumerations using the 
    // bitwise operator OR ( | ) generates a unique number (this is used by the MessageObserver)
    typedef enum 
      {
        UNDEFINED = 0,
        START = 2,
        STOP = 4, 
        VALUE = 8, 
        STATUS = 16, 
        TELEMETRY = 32, 
        OBJECT = 64, 
        USERDEFINED = 128 
      } Type;

    typedef std::list< Message*> MessageList;

    Message( const Time& time, const MessageData* data );
    Message( const Time& time, const MessageData& data );
    virtual ~Message();

    virtual Message* clone() const;
  protected:
    MessageData* getData() const 
    { 
      return m_Data; 
    }
    const Time& getTime() const 
    { 
      return m_Time; 
    }
    const Message::Type& getType() const;
  private:
    Message();
    Message( const Message& );
    const Message& operator=(const Message& other);

    Time m_Time; 
    MessageData* m_Data;
  };


  typedef std::list< MessageData* > MessageDataList;

  std::ostream& operator<< ( std::ostream& os, const Message::Type& type );

} //namespace IDEA

#endif //_HEADER_MESSAGE_HEADER_

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