LogRecordSequence.CreateReservationCollection Método

Definição

Namespace:

System.IO.Log

Assembly:

System.IO.Log.dll

Cria um novo ReservationCollection. Esse método não pode ser herdado.

public:
 virtual System::IO::Log::ReservationCollection ^ CreateReservationCollection();

public System.IO.Log.ReservationCollection CreateReservationCollection ();

abstract member CreateReservationCollection : unit -> System.IO.Log.ReservationCollection
override this.CreateReservationCollection : unit -> System.IO.Log.ReservationCollection

Public Function CreateReservationCollection () As ReservationCollection

Retornos

ReservationCollection

O ReservationCollection recém-criado.

Implementações

CreateReservationCollection()

Exceções

OutOfMemoryException

Não há memória suficiente para continuar a execução do programa.

Exemplos

As reservas podem ser executadas de duas maneiras, conforme mostrado nos exemplos a seguir. Você pode adotar as práticas nos exemplos para processamento robusto. Observe que essa tarefa só pode ser executada ao usar a classe baseada em LogRecordSequence CLFS.

//Using the ReserveAndAppend Method  
ReservationCollection reservations = recordSequence.CreateReservationCollection();  
long[] lengthOfUndoRecords = new long[] { 1000 };  
recordSequence.ReserveAndAppend(recordData,  
                                                     userSqn,  
                                                     previousSqn,  
                                                     RecordSequenceAppendOptions.None,  
                                                     reservations,  
                                                     lengthOfUndoRecords);  
recordSequence.Append(undoRecordData,    // If necessary …  
                                    userSqn,  
                                    previousSqn,  
                                    RecordSequenceAppendOptions.ForceFlush,  
                                    reservations);  

// Using the Manual Approach  
ReservationCollection reservations = recordSequence.CreateReservationCollection();  
reservations.Add(lengthOfUndoRecord);  
try  
{  
   recordSequence.Append(recordData, userSqn, previousSqn, RecordAppendOptions.None);  
}  
catch (Exception)  
{  
   reservations.Remove(lengthOfUndoRecord);  
   throw;  
}  

recordSequence.Append(undoRecordData, userSqn, previousSqn, RecordAppendOptions.ForceFlush, reservations);