Container.CreateTransactionalBatch(PartitionKey) Método

Definição

Namespace:

Microsoft.Azure.Cosmos

Assembly:

Microsoft.Azure.Cosmos.Client.dll

Pacote:

Microsoft.Azure.Cosmos v3.36.0

Inicializa uma nova instância do TransactionalBatch que pode ser usada para executar operações em vários itens no contêiner com a chave de partição fornecida de maneira transacional.

public abstract Microsoft.Azure.Cosmos.TransactionalBatch CreateTransactionalBatch (Microsoft.Azure.Cosmos.PartitionKey partitionKey);

abstract member CreateTransactionalBatch : Microsoft.Azure.Cosmos.PartitionKey -> Microsoft.Azure.Cosmos.TransactionalBatch

Public MustOverride Function CreateTransactionalBatch (partitionKey As PartitionKey) As TransactionalBatch

Parâmetros

partitionKey

PartitionKey

A chave de partição para todos os itens no lote.

Retornos

TransactionalBatch

Uma nova instância de TransactionalBatch.

Exemplos

Este exemplo modifica atomicamente um conjunto de documentos como um lote.

public class ToDoActivity
{
    public string type { get; set; }
    public string id { get; set; }
    public string status { get; set; }
}

string activityType = "personal";
ToDoActivity test1 = new ToDoActivity()
{
    type = activityType,
    id = "learning",
    status = "ToBeDone"
};

ToDoActivity test2 = new ToDoActivity()
{
    type = activityType,
    id = "shopping",
    status = "Done"
};

ToDoActivity test3 = new ToDoActivity()
{
    type = activityType,
    id = "swimming",
    status = "ToBeDone"
};

using (TransactionalBatchResponse batchResponse = await container.CreateTransactionalBatch(new Cosmos.PartitionKey(activityType))
    .CreateItem<ToDoActivity>(test1)
    .ReplaceItem<ToDoActivity>(test2.id, test2)
    .UpsertItem<ToDoActivity>(test3)
    .DeleteItem("reading")
    .CreateItemStream(streamPayload1)
    .ReplaceItemStream("eating", streamPayload2)
    .UpsertItemStream(streamPayload3)
    .ExecuteAsync())
{
   if (!batchResponse.IsSuccessStatusCode)
   {
       // Handle and log exception
       return;
   }

   // Look up interested results - eg. via typed access on operation results
   TransactionalBatchOperationResult<ToDoActivity> replaceResult = batchResponse.GetOperationResultAtIndex<ToDoActivity>(0);
   ToDoActivity readActivity = replaceResult.Resource;
}

Este exemplo lê atomicamente um conjunto de documentos como um lote.

string activityType = "personal";
using (TransactionalBatchResponse batchResponse = await container.CreateTransactionalBatch(new Cosmos.PartitionKey(activityType))
   .ReadItem("playing")
   .ReadItem("walking")
   .ReadItem("jogging")
   .ReadItem("running")
   .ExecuteAsync())
{
    // Look up interested results - eg. via direct access to operation result stream
    List<string> resultItems = new List<string>();
    foreach (TransactionalBatchOperationResult operationResult in batchResponse)
    {
        using (StreamReader streamReader = new StreamReader(operationResult.ResourceStream))
        {
            resultItems.Add(await streamReader.ReadToEndAsync());
        }
    }
}

Comentários

Limites em solicitações TransactionalBatch