private void Select_rows_where(List_adp rv, Mem_stmt stmt, Criteria crt) {
rv.Clear();
int rows_len = rows.Count();
for (int i = 0; i < rows_len; ++i) {
Mem_row itm = (Mem_row) rows.Get_at(i);
if (crt.Matches(itm)) rv.Add(itm);
}
}
public int Delete(Mem_stmt stmt) {
Db_qry_delete qry = (Db_qry_delete) stmt.Qry();
Mem_stmt_args_.Fill(stmt.Stmt_args(), qry.Where());
Select_rows_where(where_rows, stmt, qry.Where());
int where_rows_len = where_rows.Count();
for (int i = 0; i < where_rows_len; ++i) {
Mem_row itm = (Mem_row) where_rows.Get_at(i);
rows.Del(itm);
}
return where_rows_len;
}
public int Update(Mem_stmt stmt) {
Db_qry_update qry = (Db_qry_update) stmt.Qry();
Criteria where_crt = qry.Where();
if (where_crt == null) where_crt = Criteria_.All;
Mem_stmt_args_.Fill(stmt.Stmt_args(), where_crt);
Select_rows_where(where_rows, stmt, where_crt);
int where_rows_len = where_rows.Count();
String[] update_cols = qry.Cols_for_update();
int update_cols_len = update_cols.length;
for (int i = 0; i < where_rows_len; ++i) {
Mem_row itm = (Mem_row) where_rows.Get_at(i);
for (int j = 0; j < update_cols_len; ++j) itm.Set_by(update_cols[j], stmt.Args_get_at(j));
}
return where_rows_len;
}