Class ODBPP::Object

Used to represent a data object index within a table.

class Object{
public:
   unsigned short MSN;
   unsigned int length;
   union{
      unsigned int ID;
      __int64 ID64;
   };
   unsigned char *fixed;
   unsigned char *variable;
};

Members

MSN	the modified sequence number for the current object.
length	the total length of the object in bytes from the fixed address.
ID	the 32 bit Object ID of the current object within the table handles.
ID64	the 64 bit Object ID.
fixed	pointer to the start of the fixed data.
variable	pointer to the start of the variable data.

Remarks

Example Use

#include "ODBPP.h"

#define FIRST_TABLE 1

struct FixedObject{
   int First;
   double Second;
} *fixedObject;

int wmain(int argc, wchar_t* argv[])
{
   unsigned int error;
   const char16_t *userName = u"UserName", *message;
   char16_t buffer[128];
   CODBPP::Object object;
   CODBPP database;
   if((error = database.BeginTransaction()) == NO_ERROR
   && (error = database.OpenTable(FIRST_TABLE)) == NO_ERROR
   && (error = database.ReadObject(FIRST_TABLE,
           CODBPP::EQUALTO,&object,1,userName)) == NO_ERROR){
      fixedObject = (struct FixedObject*)object.fixed;
      swprintf(buffer,u"First = %d, Second = %g",
                 fixedObject->First, fixedObject->Second);
      MessageBox(buffer);
   }
   if(error && database.GetErrorMessage(&message) == NO_ERROR)
      MessageBox(message);
   database.EndTransaction();
   return NO_ERROR;
}

Also See

AddObject, ReadObject

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