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Excel user defined functions unlimited

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30 Nov 200619 min read 223.4K   5.7K   77  
Describes how to return tables of values as the result of user defined functions (UDF) in Excel.
//---------------------------------------------------------------------------
//  Excel Multivalue Formula Add-In
//  Copyright (C) <2005> <Herbert Danler>
//  Contact: danler@users.sourceforge.net
//  Project Home Page: http://excelmvf.sourceforge.net/
//
//  This program is free software; you can redistribute it and/or modify it under
//  the terms of the GNU General Public License as published by the Free Software
//  Foundation; either version 2 of the License, or (at your option) any
//  later version.
//
//  This program is distributed in the hope that it will be useful,
//  but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
//  or FITNESS FOR A PARTICULAR PURPOSE.
//  See the GNU General Public License for more details.
//
//  You should have received a copy of the GNU General Public License along with
//  this program; if not, write to the Free Software Foundation, Inc.,
//  59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
//---------------------------------------------------------------------------

/***********************************************************************
 * Module:  TCustomerRecord.cpp
 * Author:  Herbert Danler
 * Modified: Montag, 4. Oktober 2004 16:11:25
 * Purpose: Implementation of the class TCustomerRecord
 ***********************************************************************/

#include "TCustomerDataset.h"
#include "TCustomerRecord.h"

TFieldDescriptor TCustomerRecord::fieldDescriptor[]={
     {"1","CUSTOMERID",1},{"CUSTOMERID","CUSTOMERID",1},{"ID","CUSTOMERID",1},
     {"2","FIRSTNAME",2},{"FIRSTNAME","FIRSTNAME",2},{"FIRST NAME","FIRSTNAME",2},{"VORNAME","FIRSTNAME",2},
     {"3","LASTNAME",3},{"LASTNAME","LASTNAME",3},{"LAST NAME","LASTNAME",3},{"NACHNAME","LASTNAME",3},{"NAME","LASTNAME",3},
     {"4","ADDRESS",4},{"ADDRESS","ADDRESS",4},{"ADRESSE","ADDRESS",4},{"ANSCHRIFT","ADDRESS",4},
     {"5","POSTALCODE",5},{"POSTALCODE","POSTALCODE",5},{"POSTAL CODE","POSTALCODE",5},{"POSTLEITZAHL","POSTALCODE",5},{"PLZ","POSTALCODE",5},
     {"6","CITY",6},{"CITY","CITY",6},{"STADT","CITY",6},
     {"7","AREA",7},{"AREA","AREA",7},{"BUNDESLAND","AREA",7},
     {"8","COUNTRY",8},{"COUNTRY","COUNTRY",8},{"STATE","COUNTRY",8},{"STAAT","COUNTRY",8}
 };

/* default field list is displayed when user enters no or invalid field list
 * Extend whenever new fields are added! */
std::string TCustomerRecord::defaultFieldList="customerID,firstname,lastname,address,postalCode,city,area,country";

int TCustomerRecord::getfieldDescriptorArraySize(){
    return sizeof(fieldDescriptor);
}


////////////////////////////////////////////////////////////////////////
// Name:       TCustomerRecord::operator[](int pfieldnumber)
// Purpose:    Implementation of TCustomerRecord::operator[]()
// Comment:    returns field i. Fields are numbered in a sequence
//             purpose:
// Parameters:
// - pfieldnumber
// Return:     Variant
////////////////////////////////////////////////////////////////////////

Variant TCustomerRecord::operator[](int pfieldnumber) const
{
   switch (pfieldnumber){
      case 1:
         return customerID;
      case 2:
         return firstname;
      case 3:
         return lastname;
      case 4:
         return address;
      case 5:
         return postalcode;
      case 6:
         return city;
      case 7:
         return area;
      case 8:
         return country;
      default:
        return Variant(0);
   }
}

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