/// <summary>
/// Pega o comando de atualização
/// </summary>
/// <returns>Um DbCOmmand</returns>
protected Tuple <string, List <TableAdapterField> > GetUpdateCommand()
{
var fields = new StringBuilder();
foreach (var column in Collumns.Where(p => !p.Key))
{
fields.Append(fields.Length > 0 ? " , " : " ");
fields.AppendLine("" + SetQuote(column.Name) + " = @" + column.Name + "");
}
if (fields.Length == 0)
{
return(null);
}
var query = new StringBuilder();
query.AppendLine(" Update " + MakeFullTableName(DBName, TableName) + " SET ");
query.AppendLine(fields.ToString());
query.AppendLine(" ");
query.AppendLine(GetWhereCommand());
return(new Tuple <string, List <TableAdapterField> >(
query.ToString(),
GetParameters(Collumns)
));
}
/// <summary>
/// PReenche as colunms da atbela de acordo com as Campos TableAdapterFields
/// Instanciano na classe base
/// </summary>
private void FillCollumns()
{
Collumns = TableAdapterColumns.GetCollumns(this);
foreach (var item in Collumns.Where(c => c.Key))
{
KeyFields.Add(item);
}
StateRecord = eState.eAdd;
}
/// <summary>
/// Pega o camando delete
/// </summary>
/// <returns>Um DbComando com o camando para excluir</returns>
protected Tuple <string, List <TableAdapterField> > GetDeleteCommand()
{
var columns = Collumns.Where(p => p.Key).ToList();
var query = new StringBuilder();
query.AppendLine(" DELETE FROM " + MakeFullTableName(DBName, TableName) + " ");
query.AppendLine(GetWhereCommand());
return(new Tuple <string, List <TableAdapterField> >(
query.ToString(),
GetParameters(columns)));
}
/// <summary>
/// Pega o comando de inserção
/// </summary>
/// <returns>Um Db command preenchiodo</returns>
protected Tuple <string, List <TableAdapterField> > GetInsertCommand()
{
var fields = new StringBuilder();
var values = new StringBuilder();
var columns = Collumns.Where(p => !p.Identity && p.Value != null).ToList();
foreach (var column in columns)
{
if (fields.Length > 0)
{
fields.Append(" , ");
values.Append(" , ");
}
else
{
fields.Append(" ");
values.Append(" ");
}
fields.AppendLine(SetQuote(column.Name));
values.AppendFormat("@{0}", column.Name);
}
if (fields.Length == 0)
{
throw new Exception(string.Format("Não há campos definidos para o objeto [{0}]", this));
}
var query = new StringBuilder();
query.AppendLine(" INSERT INTO " + MakeFullTableName(DBName, TableName) + " ( ");
query.AppendLine(fields.ToString());
query.AppendLine(") VALUES (");
query.AppendLine(values.ToString());
query.AppendLine(") ");
var parameters = GetParameters(columns);
return(new Tuple <string, List <TableAdapterField> >(
query.ToString(),
parameters));
}
