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

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// -*- Mode: c++ -*-
//     File: $Source: /home/cvs/ISG-Repository/IDEA-DEV/Core/Agent/Includes/MessageHandle.hh,v $
//      Tag: $Name: DR_01_11_06 $
//      CVS: $Id: MessageHandle.hh,v 1.4 2005/12/30 22:05:33 rijsman Exp $
//     Info: $CVSROOT/IDEA-DEV/COPYRIGHT

#ifndef HEADER_MESSAGE_HANDLE_HEADER
#define HEADER_MESSAGE_HANDLE_HEADER

#include "Message.hh"
#include <cassert>

namespace IDEA
{
  class MessageHandle
  {
  public:
    MessageHandle();
    MessageHandle( Message* message ):m_Implementation(message) 
    {
    }
    MessageHandle( const MessageHandle& msg ) 
    { 
      m_Implementation = msg.m_Implementation; 
    }
    const MessageHandle& operator=(const MessageHandle& other ) 
    {  
      m_Implementation = other.m_Implementation; 
      
      return *this; 
    }
    const MessageData* getData() const 
    {  
      assert( m_Implementation != 0 ); 

      return m_Implementation->getData(); 
    }
    const Time& getTime() const 
    { 
      assert( m_Implementation != 0 ); 

      return m_Implementation->getTime(); 
    }
    const Message::Type& getType() const 
    { 
      assert( m_Implementation != 0 ); 
      
      return m_Implementation->getType(); 
    }
    Message* getImplementation() const 
    { 
      return m_Implementation; 
    }
    MessageHandle clone() const 
    { 
      assert( m_Implementation != 0 ); return m_Implementation->clone(); 
    }
    void release() 
    { 
      delete m_Implementation; 

      m_Implementation = 0; 
    }
  private:
    Message* m_Implementation; 
  };

  std::ostream& operator<< ( std::ostream& os, const MessageHandle& message );

  struct earlierTime:
    public std::binary_function< MessageHandle,MessageHandle, bool>
  {
    bool operator()( const MessageHandle& msg1, const MessageHandle& msg2 ) const
    {
      return msg1.getTime() < msg2.getTime();
    }
  };

  struct laterTime:
    public std::binary_function< MessageHandle,MessageHandle, bool>
  {
    bool operator()( const MessageHandle& msg1, const MessageHandle& msg2 ) const
    {
      return msg1.getTime() > msg2.getTime();
    }
  };

  typedef std::list< MessageHandle > MessageHandleList;

} //namespace IDEA

#endif //HEADER_MESSAGE_HANDLE_HEADER

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