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#ifndef __ASSOC_H
#define __ASSOC_H

//
// This file contains proprietary information of Borland International.
// Copying or reproduction without prior written approval is prohibited.
//
// Copyright (c) 1990
// Borland International
// 1800 Scotts Valley Dr.
// Scotts Valley, CA 95066
// (408) 438-8400
//

// Contents ----------------------------------------------------------------
//
//      Association
//      Association::Association
//      Association::Association                    copy constructor
//
// Description
//
//      Defines the class Association, which is an object that can
//      be stored in a Dictionary.  An Association contains references
//      to two Objects, a Key and a Value.
//
// End ---------------------------------------------------------------------

// Interface Dependencies ---------------------------------------------------

#ifndef __IOSTREAM_H
#include <iostream.h>
#define __IOSTREAM_H
#endif

#ifndef __CLSTYPES_H
#include <clstypes.h>
#define __CLSTYPES_H
#endif

#ifndef __OBJECT_H
#include <object.h>
#define __OBJECT_H
#endif

// End Interface Dependencies ------------------------------------------------

// Class //

class Association : public Object
{
public:
            Association( Object& k, Object& v ) : aKey( k ), aValue( v ) {}
            Association( const Association& a ) :
                                    aKey( a.key() ), aValue( a.value() ) {}
    virtual ~Association();

            Object&         key() const { return aKey; }
            Object&         value() const { return aValue; }

    virtual classType       isA() const;
    virtual char           *nameOf() const;
    virtual hashValueType   hashValue() const;
    virtual int             isEqual( const Object& ) const;


    virtual int             isAssociation() const;
    virtual void            printOn( ostream& ) const;

private:
            Object&         aKey;
            Object&         aValue;
};

// Description -------------------------------------------------------------
//
//      Defines an association class.  An association keeps two objects
//      together and treats them as a single object.
//
// Constructors
//
//      Association( Object& k, Object& v )
//
//      Constructor from two objects.
//
//      Association( Association& a )
//
//      Copy constructor.
//
// Public Members
//
//      key
//
//      Returns a reference to the key
//
//      value
//
//      Returns a reference to the value of the association.
//
// Private Members
//
//      aKey
//
//      aValue
//
// End ---------------------------------------------------------------------


#endif // ifndef __ASSOC_H //