protected virtual SuspendedResourcesHolder Suspend(object transaction)
{
if (TransactionSynchronizationManager.IsSynchronizationActive())
{
var suspendedSynchronizations = DoSuspendSynchronization();
try
{
object suspendedResources = null;
if (transaction != null)
{
suspendedResources = DoSuspend(transaction);
}
var name = TransactionSynchronizationManager.GetCurrentTransactionName();
TransactionSynchronizationManager.SetCurrentTransactionName(null);
var readOnly = TransactionSynchronizationManager.IsCurrentTransactionReadOnly();
TransactionSynchronizationManager.SetCurrentTransactionReadOnly(false);
var isolationLevel = TransactionSynchronizationManager.GetCurrentTransactionIsolationLevel();
TransactionSynchronizationManager.SetCurrentTransactionIsolationLevel(null);
var wasActive = TransactionSynchronizationManager.IsActualTransactionActive();
TransactionSynchronizationManager.SetActualTransactionActive(false);
return(new SuspendedResourcesHolder(suspendedResources, suspendedSynchronizations, name, readOnly, isolationLevel, wasActive));
}
catch (Exception)
{
// doSuspend failed - original transaction is still active...
DoResumeSynchronization(suspendedSynchronizations);
throw;
}
}
else if (transaction != null)
{
// Transaction active but no synchronization active.
var suspendedResources = DoSuspend(transaction);
return(new SuspendedResourcesHolder(suspendedResources));
}
else
{
// Neither transaction nor synchronization active.
return(null);
}
}
private ITransactionStatus HandleExistingTransaction(ITransactionDefinition definition, object transaction)
{
if (definition.PropagationBehavior == AbstractTransactionDefinition.PROPAGATION_NEVER)
{
throw new IllegalTransactionStateException(
"Existing transaction found for transaction marked with propagation 'never'");
}
if (definition.PropagationBehavior == AbstractTransactionDefinition.PROPAGATION_NOT_SUPPORTED)
{
_logger?.LogDebug("Suspending current transaction");
var suspendedResources = Suspend(transaction);
return(PrepareTransactionStatus(definition, null, false, TransactionSynchronization == SYNCHRONIZATION_ALWAYS, suspendedResources));
}
if (definition.PropagationBehavior == AbstractTransactionDefinition.PROPAGATION_REQUIRES_NEW)
{
_logger?.LogDebug("Suspending current transaction, creating new transaction with name [{name}]", definition.Name);
var suspendedResources = Suspend(transaction);
try
{
var status = NewTransactionStatus(definition, transaction, true, TransactionSynchronization != SYNCHRONIZATION_NEVER, suspendedResources);
DoBegin(transaction, definition);
PrepareSynchronization(status, definition);
return(status);
}
catch (Exception ex)
{
ResumeAfterBeginException(transaction, suspendedResources, ex);
throw;
}
}
if (definition.PropagationBehavior == AbstractTransactionDefinition.PROPAGATION_NESTED)
{
if (!NestedTransactionAllowed)
{
throw new NestedTransactionNotSupportedException(
"Transaction manager does not allow nested transactions by default - " +
"specify 'nestedTransactionAllowed' property with value 'true'");
}
_logger?.LogDebug("Creating nested transaction with name [{name}]", definition.Name);
if (UseSavepointForNestedTransaction)
{
// Create savepoint within existing Spring-managed transaction,
// through the SavepointManager API implemented by TransactionStatus.
// Usually uses JDBC 3.0 savepoints. Never activates Spring synchronization.
var status = PrepareTransactionStatus(definition, transaction, false, false, null);
status.CreateAndHoldSavepoint();
return(status);
}
else
{
// Nested transaction through nested begin and commit/rollback calls.
// Usually only for JTA: Spring synchronization might get activated here
// in case of a pre-existing JTA transaction.
var status = NewTransactionStatus(definition, transaction, true, TransactionSynchronization != SYNCHRONIZATION_NEVER, null);
DoBegin(transaction, definition);
PrepareSynchronization(status, definition);
return(status);
}
}
// Assumably PROPAGATION_SUPPORTS or PROPAGATION_REQUIRED.
_logger?.LogDebug("Participating in existing transaction");
if (ValidateExistingTransaction)
{
if (definition.IsolationLevel != AbstractTransactionDefinition.ISOLATION_DEFAULT)
{
var currentIsolationLevel = TransactionSynchronizationManager.GetCurrentTransactionIsolationLevel();
if (currentIsolationLevel == null || currentIsolationLevel != definition.IsolationLevel)
{
throw new IllegalTransactionStateException("Participating transaction with definition [" +
definition + "] specifies isolation level which is incompatible with existing transaction: ");
}
}
if (!definition.IsReadOnly && TransactionSynchronizationManager.IsCurrentTransactionReadOnly())
{
throw new IllegalTransactionStateException("Participating transaction with definition [" +
definition + "] is not marked as read-only but existing transaction is");
}
}
var newSynchronization = TransactionSynchronization != SYNCHRONIZATION_NEVER;
return(PrepareTransactionStatus(definition, transaction, false, newSynchronization, null));
}