cur_2.h

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// ============================================================================
// Project:     Deductive Database
// Filename:    cur_2.h
// Purpose:     Cursor for list of rows with two int columns
// Last Change: 01.08.2017
// Language:    C++
// EMail:       brass@informatik.uni-halle.de
// WWW:         http://www.informatik.uni-halle.de/~brass/
// Address:     Feldschloesschen 15, D-06120 Halle (Saale), GERMANY
// Copyright:   (c) 2015-2017 by Stefan Brass
// License:     See file "LICENSE" for copying conditions.
// Note:        There is no warranty at all - this code may contain bugs.
// ============================================================================


//=============================================================================
// Include File Frame:
//=============================================================================

#ifndef CUR_2_INCLUDED
#define CUR_2_INCLUDED

//=============================================================================
// Used Types and Macros:
//=============================================================================

#ifndef VER_INCLUDED
#include "../base/ver.h"
#endif

#ifndef STR_INCLUDED
#include "../base/str.h"
#endif

#ifndef CHECK_INCLUDED
#include "../base/check.h"
#endif

#ifndef ROW_2_INCLUDED
#include "../rel/row_2.h"
#endif

#ifndef LIST_2_INCLUDED
#include "../rel/list_2.h"
#endif

#ifndef CUR_LIST_INCLUDED
#include "../rel/cur_list.h"
#endif


//=============================================================================
// Cursor over List of Rows with two int columns:
//=============================================================================

class cur_2_c: public cur_list_c<row_2_c> {

        public:

//-----------------------------------------------------------------------------
// Constructor, Destructor:
//-----------------------------------------------------------------------------

        // Constructor:
        cur_2_c(const list_2_c *list);

        // Destructor:
        ~cur_2_c();

//-----------------------------------------------------------------------------
// Copy-constructor and assignment operator are not supported for this class:
//-----------------------------------------------------------------------------

        private:

        cur_2_c(const cur_2_c& obj);            // Not implemented
        cur_2_c& operator=(const cur_2_c& obj); // Not implemented


//=============================================================================
// (Object) Methods:
//=============================================================================

        public:

//-----------------------------------------------------------------------------
// c1: Return value for column 1 of current row in cursor.
//-----------------------------------------------------------------------------

        inline int c1() {
                return cur_list_c<row_2_c>::row()->c1();
        }

//-----------------------------------------------------------------------------
// c2: Return value for column 2 of current row in cursor.
//-----------------------------------------------------------------------------

        inline int c2() {
                return cur_list_c<row_2_c>::row()->c2();
        }

//=============================================================================
// End of Class Template:
//=============================================================================

};


//-----------------------------------------------------------------------------
// Define pointer type:
//-----------------------------------------------------------------------------

typedef cur_2_c *cur_2_t;

//-----------------------------------------------------------------------------
// Define null pointer:
//-----------------------------------------------------------------------------

#define CUR_2_NULL (static_cast<cur_2_t>(0))


//=============================================================================
// End of Include File:
//=============================================================================

#endif