void ResultSet::operator = (ResultSet &res)
{
/* Mark the result parameter as copied, avoiding
the sql_result attribute to be deallocated */
res.is_res_copied=true;
/* If the resultset 'this' is allocated,
it will be deallocated to avoid memory leaks */
destroyResultSet();
//Copy the parameter restulset attributes to 'this' resultset
this->current_tuple=res.current_tuple;
this->empty_result=res.empty_result;
this->sql_result=PQcopyResult(res.sql_result, PG_COPYRES_TUPLES | PG_COPYRES_ATTRS | PG_COPYRES_EVENTS);
this->is_res_copied=false;
}
PGresult *
pqt_copyresult(PGtypeArgs *args, int nattrs)
{
int i;
PGresult *res;
int tableid, columnid, format;
PGresAttDesc *ad = (PGresAttDesc *) malloc(nattrs * sizeof(PGresAttDesc));
if (!ad)
{
PQseterror(args->err, PQT_OUTOFMEMORY);
return NULL;
}
tableid = PQftable(args->get.result, args->get.field_num);
columnid = PQftablecol(args->get.result, args->get.field_num);
format = PQfformat(args->get.result, args->get.field_num);
for (i=0; i < nattrs; i++)
{
ad[i].tableid = tableid;
ad[i].columnid = columnid;
ad[i].format = format;
/* simple array */
if (args->typhandler->nattrs == 0)
{
ad[i].typid = args->typhandler->typoid;
ad[i].typlen = args->typhandler->typlen;
ad[i].name = NULL;
ad[i].atttypmod = -1;
}
/* composite/record */
else
{
ad[i].typid = args->typhandler->attDescs[i].attoid;
ad[i].typlen = args->typhandler->attDescs[i].attlen;
ad[i].name = args->typhandler->attDescs[i].attname;
ad[i].atttypmod = args->typhandler->attDescs[i].atttypmod;
}
}
res = PQcopyResult(args->get.result,
PG_COPYRES_EVENTS | PG_COPYRES_NOTICEHOOKS);
if (!res)
{
free(ad);
PQseterror(args->err, PQT_OUTOFMEMORY);
return NULL;
}
if (!PQsetResultAttrs(res, nattrs, ad))
{
PQclear(res);
PQseterror(args->err, PQT_OUTOFMEMORY);
res = NULL;
}
free(ad);
return res;
}
