/// <summary>
/// Executes the sentence SQL fixing the parameters needed.
/// </summary>
/// <param name="onSql">Sentence SQL to be executed</param>
public object Execute(ONSql onSql)
{
ArrayList lSqlParameters;
string lSql = onSql.GenerateSQL(out lSqlParameters);
if (onSql is ONSqlScalar)
return ExecuteScalar(lSql, lSqlParameters);
else if (onSql is ONSqlSelect)
return ExecuteReader(lSql, lSqlParameters);
else if (onSql is ONSqlInsertAutoInc)
return ExecuteInsertAutoIncScalar(lSql, lSqlParameters);
else
ExecuteNonQuery(lSql, lSqlParameters);
return null;
}