/// <summary>
/// Retrieve a list of all workflow identifiers that no longer have
/// a valid owner.
/// </summary>
protected virtual IList <Guid> LoadNonBlockedWorkflowIds()
{
TraceHelper.Trace();
IList <Guid> instanceIds;
try
{
using (IResourceAccessor resourceAccessor = CreateAccessor(this.resourceProvider))
{
instanceIds = resourceAccessor.RetrieveNonBlockedInstanceIds(this.serviceId, this.OwnershipTimeout);
}
}
catch (Exception e)
{
TraceHelper.Trace(unexpectedExceptionText, e);
base.RaiseServicesExceptionNotHandledEvent(e, Guid.Empty);
instanceIds = new List <Guid>();
}
return(instanceIds);
}