public WorkflowContext(string persistenceContext, string machineContext, string initialState, string repositoryKey)
{
_persistenceContext = persistenceContext;
_machineContext = machineContext;
_cachedState = initialState;
_machineStateData = Catalog.Preconfigure().ConfigureWorkflowDataRepository <WorkflowMachineState>()
.ConfiguredResolve <IDataRepositoryService <WorkflowMachineState,
WorkflowMachineState,
DataEnvelope <WorkflowMachineState, NoMetadata>,
NoMetadata,
DatumEnvelope <WorkflowMachineState, NoMetadata>,
NoMetadata> >
(repositoryKey);
WorkflowMachineState current = null;
var qs = new QuerySpecification
{
BookMark = new GenericPageBookmark {
PageSize = 100
},
Where = new Filter
{
PredicateJoin = PredicateJoin.And,
Rules = new Comparison[]
{
new Comparison
{
Data = _persistenceContext,
Field = "Parent",
Test = Test.Equal
},
new Comparison
{
Data = _machineContext,
Field = "StateMachine",
Test = Test.Equal
}
}
}
};
var queryResult = _machineStateData.Query(qs).Items.EmptyIfNull();
current = queryResult.FirstOrDefault();
if (null != current)
{
_cachedState = current.State;
_cachedId = current.Id;
}
else
{
_cachedId = string.Format("MS{0}-{1}", _persistenceContext, _machineContext);
ChangeState(_cachedState);
}
}
public void ChangeState(string st)
{
_cachedState = st;
var update = new WorkflowMachineState
{
Id = _cachedId,
Parent = _persistenceContext,
StateMachine = _machineContext,
State = _cachedState,
LastStateChanged = DateTime.UtcNow
};
_machineStateData.Store(update);
}