private bool Validate(DBCell cell)
{
bool isValid = true;
try
{
switch (cell.Type)
{
case DbDataType.Int:
{
Convert.ToInt32(cell.Value);
break;
}
case DbDataType.DateTime:
case DbDataType.Date:
{
Convert.ToDateTime(cell.Value);
break;
}
case DbDataType.VarChar:
{
break;
}
default:
{
isValid = false;
break;
}
}
}
catch
{
isValid = false;
}
return isValid;
}
private DbCommand GetUpdateCommand(GenericDatabase db, DbConnection conn, string tableName, DBCell[] cells, DBCell[] condetions)
{
DbCommand cmd = GetUpdateCommand(db, conn, tableName, cells);
cmd.CommandText += " WHERE ";
foreach (DBCell condetion in condetions)
{
cmd.CommandText += condetion.Name + " = " + db.GetAsParameterName(condetion.Name) + " AND ";
cmd.Parameters.Add(db.GetDBCellAsDBParameter(cmd, condetion));
}
cmd.CommandText += " 1=1";
return cmd;
}
private DbCommand GetInsertCommand(GenericDatabase db, DbConnection conn, string tableName, DBCell[] cells)
{
if(Validate())
{
DbCommand dbCommand = conn.CreateCommand();
dbCommand.CommandText = "INSERT INTO " + tableName + "(";
String vals = "";
for (int i = 0; i < cells.Length; i++)
{
if (cells[i].IsUpdatable)
{
dbCommand.CommandText += cells[i].Name;
dbCommand.CommandText += ", ";
vals += db.GetAsParameterName(cells[i].Name);
vals += ", ";
dbCommand.Parameters.Add(db.GetDBCellAsDBParameter(dbCommand, cells[i]));
}
}
dbCommand.CommandText = Utils.RemoveTrailingSymbol(dbCommand.CommandText, ",");
vals = Utils.RemoveTrailingSymbol(vals, ",");
dbCommand.CommandText += ") VALUES (" + vals + ")";
return dbCommand;
}
return null;
}
private DbCommand GetUpdateCommand(GenericDatabase db, DbConnection conn, string tableName, DBCell[] cells)
{
if (Validate())
{
string sql = "UPDATE " + tableName + " SET ";
DbCommand dbCommand = conn.CreateCommand();
for (int i = 0; i < cells.Length; i++)
{
if (cells[i].IsUpdatable)
{
sql += cells[i].Name + " = " + db.GetAsParameterName(cells[i].Name);
sql += ", ";
dbCommand.Parameters.Add(db.GetDBCellAsDBParameter(dbCommand, cells[i]));
}
}
sql = Utils.RemoveTrailingSymbol(sql, ",");
dbCommand.CommandText = sql;
return dbCommand;
}
return null;
}
public abstract DbParameter GetDBCellAsDBParameter(DbCommand cmd, DBCell cell);
