/// <summary>
/// Begins this instance.
/// </summary>
/// <returns></returns>
/// <exception cref="MongoTransactionException">
/// Cannot start already committed transaction.
/// or
/// Cannot start transaction in failed state.
/// or
/// Cannot start transaction which is already rollbacked.
/// or
/// Cannot start transaction which is already started.
/// </exception>
public bool Begin()
{
switch (Status)
{
case MongoTransactionStatus.Committed:
throw new MongoTransactionException("Cannot start already committed transaction.");
case MongoTransactionStatus.Failed:
throw new MongoTransactionException("Cannot start transaction in failed state.");
case MongoTransactionStatus.Rollbacked:
throw new MongoTransactionException("Cannot start transaction which is already rollbacked.");
case MongoTransactionStatus.Started:
throw new MongoTransactionException("Cannot start transaction which is already started.");
}
CommandResult result = MongoStaticContext.Context.Database.RunCommand(CreateBeginTransactionCommandDocument());
Status = result.Ok ? MongoTransactionStatus.Started : MongoTransactionStatus.Failed;
return result.Ok;
}
/// <summary>
/// Rollbacks the internal.
/// </summary>
/// <returns></returns>
private bool RollbackInternal()
{
if (Status == MongoTransactionStatus.Started)
{
CommandResult result = MongoStaticContext.Context.Database.RunCommand(CreateRollbackTransactionCommandDocument());
Status = result.Ok ? MongoTransactionStatus.Rollbacked : MongoTransactionStatus.Failed;
return result.Ok;
}
return false;
}