/// <summary> /// �����ݿ��м������� /// </summary> /// <param name="selectCommandText">SELECT���</param> /// <param name="loadDataTableType">�������ݵķ�ʽ</param> protected abstract void Load(string selectCommandText, LoadDataTableType loadDataTableType);
/// <summary>
/// �����ݿ��м�������
/// </summary>
/// <param name="selectCommandText">SELECT���</param>
/// <param name="loadDataTableType">�������ݵķ�ʽ</param>
protected override void Load(string selectCommandText, LoadDataTableType loadDataTableType)
{
//��ṹ�����仯ʱ�������½�_dataTable�����������������������
//ʱ�ᵼ��Լ����ͻ
switch(loadDataTableType)
{
case LoadDataTableType.Merge://�ϲ�
break;
case LoadDataTableType.Clear://���
this._dataTable.Clear();
break;
case LoadDataTableType.Reset://����
this._dataTable.Reset();
break;
case LoadDataTableType.New://�½�
if(this._dataTable != null)
this._dataTable.Dispose();
this._dataTable = new DataTable();
break;
case LoadDataTableType.None:
break;
}
try
{
AdoHelper helper = AdoHelper.Create();
_oracleConnection = (OracleConnection)helper.GetConnection();
this._oracleDataAdapter = (OracleDataAdapter)helper.GetDataAdapter(selectCommandText, _oracleConnection);
this._oracleDataAdapter.Fill(this._dataTable);
_loaded = true;
}
catch(Exception ex)
{
string s = ex.Message;
if(this._oracleDataAdapter != null)
this._oracleDataAdapter.Dispose();
_loaded = false;
}
}