// Create an aggregating function
public bool CreateAggFunction(string name, int serial, int accnum, SqlCommonType[] args, SqlCommonType retn)
{
UserFunctionStepCallback sfunc = (c, nv, v) => EvalFunctionStep(c, nv, v, accnum, serial, args, retn);
UserFunctionFinalCallback ffunc = (c) => EvalFunctionFinal(c, serial, args, retn);
_stepfuncs.Add(sfunc);
_finalfuncs.Add(ffunc);
return(CreateAggFunction(name, sfunc, ffunc));
}
public static extern int sqlite3_create_function_aggregate(IntPtr db, string zFunctionName, int nArg, int eTextRep, IntPtr pApp,
IntPtr xFunc, UserFunctionStepCallback xStep, UserFunctionFinalCallback xFinal);
// Wrapper
public bool CreateAggFunction(string name, UserFunctionStepCallback scallback, UserFunctionFinalCallback fcallback)
{
_lastresult = (Result)sqlite3_create_function_aggregate(_dbhandle, name, -1,
(int)Encoding.UTF8, IntPtr.Zero, IntPtr.Zero, scallback, fcallback);
return(CheckOk());
}
