///<summary>
///Commits the list of work items by using the specified <see cref="T:System.Transactions.Transaction"></see> object.
///</summary>
///
///<param name="items">The work items to be committed.</param>
///<param name="transaction">The <see cref="T:System.Transactions.Transaction"></see> associated with the pending work.</param>
public void Commit(Transaction transaction, ICollection items)
{
TraceHelper.Trace();
if (transaction == null)
{
throw new ArgumentNullException("transaction");
}
if (items == null)
{
throw new ArgumentNullException("items");
}
try
{
using (IPersistenceResourceAccessor resourceAccessor = CreateAccessor(_resourceProvider, transaction))
{
foreach (PendingWorkItem item in items)
{
switch (item.Type)
{
case PendingWorkItem.ItemType.Instance:
resourceAccessor.InsertInstanceState(item,
_serviceId, ownershipTimeout);
continue;
case PendingWorkItem.ItemType.CompletedScope:
resourceAccessor.InsertCompletedScope(
item.InstanceId, item.StateId,
item.SerialisedActivity);
continue;
case PendingWorkItem.ItemType.UnlockWorkflow:
resourceAccessor.UnlockInstanceState(
item.InstanceId, _serviceId);
continue;
}
}
}
}
catch (Exception e)
{
String errorMessage = RM.Get_Error_PersistenceServiceException(e.ToString());
TraceHelper.Trace(errorMessage);
PersistenceException persistenceException =
new PersistenceException(errorMessage, e);
RaiseServicesExceptionNotHandledEvent(
persistenceException,
Guid.Empty);
throw persistenceException;
}
}
///<summary>
/// Load the specified workflow instance into memory from the
/// persistence store.
///</summary>
///<param name="instanceId">
/// The <see cref="T:System.Guid"></see> of the root activity of the workflow instance.
/// </param>
protected override Activity LoadWorkflowInstanceState(Guid instanceId)
{
TraceHelper.Trace();
Activity rootActivity;
try
{
using (IPersistenceResourceAccessor resourceAccessor = CreateAccessor(_resourceProvider))
{
byte[] instanceState = resourceAccessor.RetrieveInstanceState(
instanceId, _serviceId, ownershipTimeout);
rootActivity = RestoreFromDefaultSerializedForm(instanceState, null);
}
}
catch (Exception e)
{
String errorMessage = RM.Get_Error_PersistenceServiceException(e.ToString());
TraceHelper.Trace(errorMessage);
PersistenceException persistenceException =
new PersistenceException(errorMessage, e);
RaiseServicesExceptionNotHandledEvent(
persistenceException, instanceId);
throw persistenceException;
}
return(rootActivity);
}
/// <summary>
/// Load a completed scope from the persistence store.
/// </summary>
/// <param name="scopeId">
/// <see cref="Guid" /> representing the unique identifier of the completed scope.
/// </param>
/// <param name="outerActivity">
/// The activity in which to load the completed scope into.
/// </param>
protected override Activity LoadCompletedContextActivity(Guid scopeId, Activity outerActivity)
{
TraceHelper.Trace();
Activity contextActivity;
try
{
using (IPersistenceResourceAccessor resourceAccessor = CreateAccessor(_resourceProvider))
{
byte[] instanceState = resourceAccessor.RetrieveCompletedScope(scopeId);
contextActivity = RestoreFromDefaultSerializedForm(instanceState, outerActivity);
}
}
catch (Exception e)
{
String errorMessage = RM.Get_Error_PersistenceServiceException(e.ToString());
TraceHelper.Trace(errorMessage);
PersistenceException persistenceException =
new PersistenceException(errorMessage, e);
RaiseServicesExceptionNotHandledEvent(
persistenceException,
WorkflowEnvironment.WorkflowInstanceId);
throw persistenceException;
}
return(contextActivity);
}
protected virtual IList <Guid> LoadExpiredWorkflowIds()
{
TraceHelper.Trace();
IList <Guid> instanceIds;
try
{
using (IPersistenceResourceAccessor resourceAccessor = CreateAccessor(_resourceProvider))
{
instanceIds = resourceAccessor.RetrieveExpiredTimerIds(_serviceId, ownershipTimeout);
}
}
catch (Exception e)
{
String errorMessage = RM.Get_Error_PersistenceServiceException(e.ToString());
TraceHelper.Trace(errorMessage);
RaiseServicesExceptionNotHandledEvent(
new PersistenceException(errorMessage, e),
Guid.Empty);
instanceIds = new List <Guid>();
}
return(instanceIds);
}
