Transaction.EnlistVolatile Méthode

Définition

Inscrit un gestionnaire de ressources volatil pour participer à une transaction.Enlists a volatile resource manager to participate in a transaction.

Surcharges

EnlistVolatile(IEnlistmentNotification, EnlistmentOptions)

Inscrit un gestionnaire de ressources volatiles qui prend en charge la validation à deux phases pour participer à une transaction.Enlists a volatile resource manager that supports two phase commit to participate in a transaction.

EnlistVolatile(ISinglePhaseNotification, EnlistmentOptions)

Inscrit un gestionnaire de ressources volatil qui prend en charge l'optimisation de la validation à phase unique pour participer à une transaction.Enlists a volatile resource manager that supports single phase commit optimization to participate in a transaction.

Remarques

Les gestionnaires de ressources volatiles ne peuvent pas effectuer de récupération après un échec pour terminer une transaction à laquelle ils participent.Volatile resource managers cannot recovery from failure to complete a transaction in which they were participating. Pour plus d’informations sur les ressources volatiles et durables, ainsi que sur l’inscription d’une ressource, consultez implémentation d’un gestionnaire des ressources.For more information on volatile and durable resources, as well as how to enlist a resource, see Implementing A Resource Manager. Pour plus d’informations sur la façon dont un gestionnaire de ressources répond à la notification de validation et à la préparation de la validation, consultez validation d’une transaction en une phase unique et en plusieurs phases.For more information on how a resource manager responds to commit notification and prepare the commit, see Committing A Transaction In Single-Phase and Multi-Phase.

EnlistVolatile(IEnlistmentNotification, EnlistmentOptions)

Inscrit un gestionnaire de ressources volatiles qui prend en charge la validation à deux phases pour participer à une transaction.Enlists a volatile resource manager that supports two phase commit to participate in a transaction.

public:
 System::Transactions::Enlistment ^ EnlistVolatile(System::Transactions::IEnlistmentNotification ^ notification, System::Transactions::EnlistmentOptions options);
public System.Transactions.Enlistment EnlistVolatile (System.Transactions.IEnlistmentNotification notification, System.Transactions.EnlistmentOptions options);
member this.EnlistVolatile : System.Transactions.IEnlistmentNotification * System.Transactions.EnlistmentOptions -> System.Transactions.Enlistment
Public Function EnlistVolatile (notification As IEnlistmentNotification, options As EnlistmentOptions) As Enlistment

Paramètres

enlistmentNotification
IEnlistmentNotification

Un objet qui implémente l’interface IEnlistmentNotification pour recevoir des notifications de validation en deux phases.An object that implements the IEnlistmentNotification interface to receive two-phase commit notifications.

enlistmentOptions
EnlistmentOptions

EnlistDuringPrepareRequired si le gestionnaire de ressources souhaite exécuter un travail supplémentaire pendant la phase de préparation.EnlistDuringPrepareRequired if the resource manager wants to perform additional work during the prepare phase.

Retours

Un objet Enlistment qui décrit l'inscription.An Enlistment object that describes the enlistment.

Exemples

L’exemple suivant illustre une implémentation de IEnlistmentNotification l’interface, ainsi qu’une inscription de l’objet en tant que participant dans une transaction à EnlistVolatile l’aide de la méthode.The following example shows an implementation of IEnlistmentNotification interface, as well as enlisting the object as a participant in a transaction using the EnlistVolatile method.

static void Main(string[] args)
{
    try
    {
        using (TransactionScope scope = new TransactionScope())
        {
        
            //Create an enlistment object
            myEnlistmentClass myElistment = new myEnlistmentClass();

            //Enlist on the current transaction with the enlistment object
            Transaction.Current.EnlistVolatile(myElistment, EnlistmentOptions.None);

            //Perform transactional work here.

            //Call complete on the TransactionScope based on console input
                            ConsoleKeyInfo c;
            while(true)
                            {
                Console.Write("Complete the transaction scope? [Y|N] ");
                c = Console.ReadKey();
                Console.WriteLine();
        
                                    if ((c.KeyChar == 'Y') || (c.KeyChar == 'y'))
                {
                    scope.Complete();
                    break;
                }
                else if ((c.KeyChar == 'N') || (c.KeyChar == 'n'))
                {
                    break;
                }
            }
        }
    }
    catch (System.Transactions.TransactionException ex)
    {
        Console.WriteLine(ex);
    }
    catch
    {
        Console.WriteLine("Cannot complete transaction");
        throw;
    }
}

class myEnlistmentClass : IEnlistmentNotification
{
    public void Prepare(PreparingEnlistment preparingEnlistment)
    {
        Console.WriteLine("Prepare notification received");

        //Perform transactional work

        //If work finished correctly, reply prepared
        preparingEnlistment.Prepared();

        // otherwise, do a ForceRollback
        preparingEnlistment.ForceRollback();
    }

    public void Commit(Enlistment enlistment)
    {
        Console.WriteLine("Commit notification received");

        //Do any work necessary when commit notification is received

        //Declare done on the enlistment
        enlistment.Done();
    }

    public void Rollback(Enlistment enlistment)
    {
        Console.WriteLine("Rollback notification received");

        //Do any work necessary when rollback notification is received

        //Declare done on the enlistment
        enlistment.Done();
    }

    public void InDoubt(Enlistment enlistment)
    {
        Console.WriteLine("In doubt notification received");

        //Do any work necessary when indout notification is received
        
        //Declare done on the enlistment
        enlistment.Done();
    }
}
    Public Shared Sub Main()
        Try
            Using scope As TransactionScope = New TransactionScope()

                'Create an enlistment object
                Dim myEnlistmentClass As New EnlistmentClass

                'Enlist on the current transaction with the enlistment object
                Transaction.Current.EnlistVolatile(myEnlistmentClass, EnlistmentOptions.None)

                'Perform transactional work here.

                'Call complete on the TransactionScope based on console input
                Dim c As ConsoleKeyInfo
                While (True)
                    Console.Write("Complete the transaction scope? [Y|N] ")
                    c = Console.ReadKey()
                    Console.WriteLine()
                    If (c.KeyChar = "Y") Or (c.KeyChar = "y") Then
                        scope.Complete()
                        Exit While
                    ElseIf ((c.KeyChar = "N") Or (c.KeyChar = "n")) Then
                        Exit While
                    End If
                End While
            End Using
        Catch ex As TransactionException
            Console.WriteLine(ex)
        Catch
            Console.WriteLine("Cannot complete transaction")
            Throw
        End Try
    End Sub
End Class

Public Class EnlistmentClass
    Implements IEnlistmentNotification

    Public Sub Prepare(ByVal myPreparingEnlistment As PreparingEnlistment) Implements System.Transactions.IEnlistmentNotification.Prepare
        Console.WriteLine("Prepare notification received")

        'Perform transactional work

        'If work finished correctly, reply with prepared
        myPreparingEnlistment.Prepared()
    End Sub

    Public Sub Commit(ByVal myEnlistment As Enlistment) Implements System.Transactions.IEnlistmentNotification.Commit
        Console.WriteLine("Commit notification received")

        'Do any work necessary when commit notification is received

        'Declare done on the enlistment
        myEnlistment.Done()
    End Sub

    Public Sub Rollback(ByVal myEnlistment As Enlistment) Implements System.Transactions.IEnlistmentNotification.Rollback
        Console.WriteLine("Rollback notification received")

        'Do any work necessary when rollback notification is received

        'Declare done on the enlistment
        myEnlistment.Done()
    End Sub

    Public Sub InDoubt(ByVal myEnlistment As Enlistment) Implements System.Transactions.IEnlistmentNotification.InDoubt
        Console.WriteLine("In doubt notification received")

        'Do any work necessary when indout notification is received

        'Declare done on the enlistment
        myEnlistment.Done()
    End Sub
End Class

Remarques

Les gestionnaires de ressources volatiles ne peuvent pas effectuer de récupération après un échec pour terminer une transaction à laquelle ils participent.Volatile resource managers cannot recovery from failure to complete a transaction in which they were participating. Pour obtenir une inscription durable dans une transaction, utilisez la EnlistDurable méthode.To obtain a durable enlistment in a transaction, use the EnlistDurable method.

Les gestionnaires de ressources listés pour la participation à une transaction via cette méthode reçoivent des notifications de validation à deux phases qui correspondent IEnlistmentNotification aux méthodes définies sur l’interface.Resource managers enlisted for participation in a transaction through this method receive two phase commit notifications that correspond to the methods defined on the IEnlistmentNotification interface.

EnlistVolatile(ISinglePhaseNotification, EnlistmentOptions)

Inscrit un gestionnaire de ressources volatil qui prend en charge l'optimisation de la validation à phase unique pour participer à une transaction.Enlists a volatile resource manager that supports single phase commit optimization to participate in a transaction.

public:
 System::Transactions::Enlistment ^ EnlistVolatile(System::Transactions::ISinglePhaseNotification ^ notification, System::Transactions::EnlistmentOptions options);
public System.Transactions.Enlistment EnlistVolatile (System.Transactions.ISinglePhaseNotification notification, System.Transactions.EnlistmentOptions options);
member this.EnlistVolatile : System.Transactions.ISinglePhaseNotification * System.Transactions.EnlistmentOptions -> System.Transactions.Enlistment
Public Function EnlistVolatile (notification As ISinglePhaseNotification, options As EnlistmentOptions) As Enlistment

Paramètres

singlePhaseNotification
ISinglePhaseNotification

Objet qui implémente l'interface ISinglePhaseNotification qui doit être capable de recevoir une validation à phase unique et des notifications de validation à deux phases.An object that implements the ISinglePhaseNotification interface that must be able to receive single phase commit and two phase commit notifications.

enlistmentOptions
EnlistmentOptions

EnlistDuringPrepareRequired si le gestionnaire de ressources souhaite exécuter un travail supplémentaire pendant la phase de préparation.EnlistDuringPrepareRequired if the resource manager wants to perform additional work during the prepare phase.

Retours

Un objet Enlistment qui décrit l'inscription.An Enlistment object that describes the enlistment.

Remarques

Les gestionnaires de ressources volatiles ne peuvent pas effectuer de récupération après un échec pour terminer une transaction à laquelle ils participent.Volatile resource managers cannot recovery from failure to complete a transaction in which they were participating. Pour obtenir une inscription durable dans une transaction, utilisez la EnlistDurable méthode.To obtain a durable enlistment in a transaction, use the EnlistDurable method. Pour plus d’informations sur les ressources volatiles et durables, ainsi que sur l’inscription d’une ressource, consultez implémentation d’un gestionnaire des ressources.For more information on volatile and durable resources, as well as how to enlist a resource, see Implementing A Resource Manager. Pour plus d’informations sur la façon dont un gestionnaire de ressources répond à la notification de validation et à la préparation de la validation, consultez validation d’une transaction en une phase unique et en plusieurs phases.For more information on how a resource manager responds to commit notification and prepare the commit, see Committing A Transaction In Single-Phase and Multi-Phase.

Notez que même lorsque votre implémentation de Resource Manager s’inscrit avec cette méthode, il n’est pas garanti qu’elle reçoit une validation à phase unique.You should note that even when your resource manager implementation enlists with this method, it is not guaranteed that it receives a single phase commit. Le gestionnaire de transactions peut toujours envoyer des notifications de validation en deux phases.The transaction manager can still send two phase commit notifications instead. Pour plus d’informations sur l’optimisation de la validation en une phase, consultez optimisation à l’aide de la validation à phase unique et de la notification de phase unique pouvant être promue.For more information on the single phase commit optimization, see Optimization Using Single Phase Commit and Promotable Single Phase Notification.

Voir aussi

S’applique à