//
//   This file contains the C++ code from Program 5.19 of
//   "Data Structures and Algorithms
//    with Object-Oriented Design Patterns in C++"
//   by Bruno R. Preiss.
//
//   Copyright (c) 1998 by Bruno R. Preiss, P.Eng.  All rights reserved.
//
//   http://www.pads.uwaterloo.ca/Bruno.Preiss/books/opus4/programs/pgm05_19.cpp
//
Association::Association (Object& _key) :
    key (&_key),
    value (0)
    {}

Association::Association (Object& _key, Object& _value) :
    key (&_key),
    value (&_value)
    {}

Association::~Association ()
{
    if (IsOwner ())
    {
	delete key;
	delete value;
    }
}