protected override void OnDispose(Boolean disposing)
{
base.OnDispose(disposing);
CloseOperation();
_LastSchema = null;
_Client = null;
_Session = null;
}
public void Execute(String statement)
{
CloseOperation();
var req = new TExecuteStatementReq()
{
SessionHandle = _Session,
Statement = statement,
};
_LastSchema = null;
var resp = _Client.ExecuteStatement(req);
resp.Status.CheckStatus();
_Operation = resp.OperationHandle;
}
public TTableSchema GetSchema()
{
if (_Operation == null || !_Operation.HasResultSet)
{
return(null);
}
if (_LastSchema == null)
{
var req = new TGetResultSetMetadataReq(_Operation);
var rs = _Client.GetResultSetMetadata(req);
rs.Status.CheckStatus();
_LastSchema = rs.Schema;
}
return(_LastSchema);
}
