public async Task <Item> Get(ObjectId id, ItemExpansionParams expand = null)
{
var filter = Builders <Item> .Filter.Eq("Id", id);
if (expand == null)
{
expand = new ItemExpansionParams(null);
}
try
{
var item = await _context.Items.Find(filter).FirstOrDefaultAsync();
if (item == null)
{
throw new ApplicationException("Could not find item with ID:" + item.Id);
}
ResetTemporaryCaches();
await HydrateForGet(item, expand);
return(item);
}
catch (Exception ex)
{
throw ex;
}
}
private async Task <Item> HydrateForGet(Item item, ItemExpansionParams expand)
{
try
{
item = await HydrateForGetAndSave(item);
if (expand.LinkedItems)
{
if (item.LinkedItemIds != null && item.LinkedItemIds.Count > 0)
{
item.LinkedItems = new List <Item>();
foreach (ObjectId linkedItemId in item.LinkedItemIds)
{
if (item.LinkedItems == null)
{
item.LinkedItems = new List <Item>();
}
item.LinkedItems.Add(await Get(linkedItemId));
}
}
}
if (expand.Transitions)
{
var funcReg = new FunctionRegistry(this,
_itemTypeRepository, null, _workflowNodeRepository);
var nodeTransitions = await _workflowTransitionRepository
.Search(new WorkflowTransitionSearchRequest()
{
FromNodeId = item.WorkflowNodeId.ToString()
});
// Test each transitions conditions for applicability to the item
foreach (WorkflowTransition transition in nodeTransitions)
{
bool anyFailedConditions = false;
if (transition.PreConditions == null)
{
transition.PreConditions = new List <WorkflowTransitionFunction>();
}
foreach (WorkflowTransitionFunction condition in transition.PreConditions)
{
var execResult = await funcReg
.ExecuteFunction(condition, item);
if (execResult.IsFailure)
{
anyFailedConditions = true;
break;
}
}
if (!anyFailedConditions)
{
if (item.Transitions == null)
{
item.Transitions = new List <WorkflowTransition>();
}
item.Transitions.Add(transition);
}
}
}
return(item);
}
catch (Exception ex)
{
throw ex;
}
}