private static IDbDataAdapter PrepareDataAdapter(AbstractDBBridge db, string sql)
{
var dataAdapter = db.CreateAdapter(sql, db.Connection);
dataAdapter.SelectCommand.CommandTimeout = db.Timeout;
dataAdapter.SelectCommand.Transaction = db.Trans;
return(dataAdapter);
}
/// <summary>
/// テーブルスキーマを取得します。
/// 結果はDataTableで返します。
/// </summary>
/// <param name="sql"></param>
/// <returns></returns>
public static DataTable SelectTableSchema(this AbstractDBBridge db, string tableName)
{
if (String.IsNullOrEmpty(tableName))
{
throw new ArgumentException("テーブル名にヌルまたは空文字は指定できません。");
}
return(PrepareDataAdapter(db, string.Format("SELECT * FROM {0};", tableName)).SelectTableSchema());
}
/// <summary>
/// SELECTを実行します。
/// 結果はDataSetで返します。
/// </summary>
/// <param name="sql"></param>
/// <returns></returns>
public static DataSet SelectDataSet(this AbstractDBBridge db, string sql)
{
if (String.IsNullOrEmpty(sql))
{
throw new ArgumentException(SQL_SHOULD_NOT_NULL_OR_EMPTY);
}
return(PrepareDataAdapter(db, sql).SelectDataSetFromDataAdapter());
}
/// <summary>
/// 値を一つ返すSQLを実行します
/// </summary>
/// <param name="sql"></param>
/// <returns></returns>
public static TypeConvertableWrapper SelectOne(this AbstractDBBridge db, string sql)
{
if (String.IsNullOrEmpty(sql))
{
throw new ArgumentException(SQL_SHOULD_NOT_NULL_OR_EMPTY);
}
return(PrepareCommand(db, sql).SelectOne());
}
/// <summary>
/// 結果を返さないSQLを実行します
/// </summary>
/// <param name="sql"></param>
/// <returns></returns>
public static int Execute(this AbstractDBBridge db, string sql)
{
if (String.IsNullOrEmpty(sql))
{
throw new ArgumentException(SQL_SHOULD_NOT_NULL_OR_EMPTY);
}
return(PrepareCommand(db, sql).Execute());
}
private static IDbCommand PrepareCommand(AbstractDBBridge db, string sql)
{
db.Cmd.CommandText = sql;
db.Cmd.CommandTimeout = db.Timeout;
return(db.Cmd);
}
public DBTran()
{
DB = PluginFactory.NewDB;
DB.BeginTransaction();
}
