AbortTransaction

AbortTransaction returns the current transaction to its original state, it could be the state at the beginning of the transaction or after the last CommitTransaction.

unsigned int AbortTransaction(
   bool releaseObjectLocks = true
);

Parameters

releaseObjectLocks

If this is set to false, this method acts as an unsave point, undoing all adds, edits and deletes, but not releasing any object locks.

Return Values

If the method succeeds, the return value is zero else see error codes for more details.

Remarks

#define FIRST_TABLE 1
CODBPP::Object object;
struct FixedObject{
   int First;
   double Second;
} *fixedObject;
unsigned int error = NO_ERROR;
char16_t *message;
if((error = database.BeginTransaction()) == NO_ERROR
&& (error = database.OpenTable(FIRST_TABLE)) == NO_ERROR){
   while(error == NO_ERROR){
      if((error = database.NewObject(FIRST_TABLE,&object)) == NO_ERROR){
         fixedObject = (struct FixedObject*)object.fixed;
         fixedObject->First = 456;
         fixedObject->Second = 456.789;
         if((error = database.AddObject(FIRST_TABLE,&object)) == NO_ERROR){
            if(object.ID > 30){
               error = database.AbortTransaction();
               break;
            }
            if(object.ID > 25) break;
         }
      }
   }
   if(error == NO_ERROR) error = database.CommitTransaction();
}
if(error && database.GetErrorMessage(&message) == NO_ERROR)
   MessageBox(message);
database.EndTransaction();

Also See

BeginTransaction, CommitTransaction, EndTransaction