public void Init()
{
var workStepRepository = new MemoryWorkStepRepository();
var workItemRepository = new MemoryWorkItemRepository();
var workflowRepository = new WorkflowRepository(workItemRepository, workStepRepository);
_wp = new Workflow(workflowRepository);
_jsonRenderer = new JsonRenderer(_wp);
}
private WorkItem MergeParallelWorkItems(WorkItemTransition transition)
{
var unlockedParentWorkItem = WorkflowRepository.GetWorkItem(transition.WorkItem.Parent.Id).UpdateStatus(WorkItemStatus.Normal);
WorkflowRepository.UpdateWorkItem(unlockedParentWorkItem);
foreach (var childWorkItem in WorkflowRepository.GetChildWorkItems(transition.WorkItem.Parent).ToList())
{
if (WorkflowRepository.IsExpandStep(transition.WorkStep))
{
CleanUpIfMovingFromExpandStep(new WorkItemTransition(childWorkItem, transition.WorkStep));
}
WorkflowRepository.DeleteWorkItem(childWorkItem.Id);
}
return(unlockedParentWorkItem);
}
private void DeleteWorkItemRecursively(WorkItem workItem)
{
var expandedChildWorkItems = WorkflowRepository.GetChildWorkItems(workItem.AsParent(WorkItemParentType.Expanded));
var parallelChildWorkItems = WorkflowRepository.GetChildWorkItems(workItem.AsParent(WorkItemParentType.Parallelled));
var childWorkItems = expandedChildWorkItems.Concat(parallelChildWorkItems);
if (childWorkItems.Count() > 0)
{
foreach (var childWorkItem in childWorkItems)
{
DeleteWorkItemRecursively(childWorkItem);
}
}
WorkflowRepository.DeleteWorkItem(workItem.Id);
CleanUpIfInExpandStep(workItem);
}
private void MoveToWithinParallelStep(WorkItemTransition transition)
{
var newTransition = transition;
if (!WorkflowRepository.IsValidWorkStepForWorkItem(transition.WorkItem, transition.WorkStep))
{
newTransition = TraverseParallelMoveHierarchy(transition);
}
ThrowIfMovingToStepWithWrongClass(newTransition);
CleanUpIfMovingFromExpandStep(newTransition);
newTransition = AttemptMergeIfMovingChildOfParallelledWorkItem(newTransition);
var resultTransition = DoMove(newTransition);
TryUpdatingExpandLockIfMovingChildOfExpandedWorkItem(resultTransition);
}
private void Create(WorkItem newWorkItem)
{
var leafStep = WorkflowRepository.GetLeafStep(newWorkItem.Path);
if (leafStep.Type != WorkStepType.Begin)
{
throw new InvalidOperationException("Can only create work items in begin step");
}
var classes = WorkflowRepository.GetWorkItemClasses(leafStep);
newWorkItem = newWorkItem.MoveTo(leafStep, _timeSource.GetTime()).UpdateClasses(classes);
WorkStep transientStep;
if (WorkflowRepository.IsWithinTransientStep(leafStep, out transientStep))
{
var parentItem = GetTransientParentWorkItem(transientStep);
WorkflowRepository.UpdateWorkItem(parentItem.UpdateStatus(WorkItemStatus.ExpandLocked));
newWorkItem = newWorkItem.MoveTo(leafStep, _timeSource.GetTime()).UpdateParent(parentItem, WorkItemParentType.Expanded);
foreach (var workItemClass in newWorkItem.Classes)
{
foreach (var rootClass in WorkItemClass.FindRootClasses(workItemClass))
{
newWorkItem = newWorkItem.AddClass(rootClass);
}
}
}
else if (WorkflowRepository.IsWithinExpandStep(leafStep))
{
throw new InvalidOperationException("Cannot create item directly under expand step");
}
if (!newWorkItem.Ordinal.HasValue)
{
newWorkItem = newWorkItem.UpdateOrdinal(WorkflowRepository.GetNextOrdinal(newWorkItem));
}
WorkflowRepository.CreateWorkItem(newWorkItem);
}
public void UpdateWorkItem(WorkItem changedWorkItem)
{
var currentWorkItem = GetWorkItemOrThrow(changedWorkItem.Id);
ThrowIfConflictingTimestamp(currentWorkItem, changedWorkItem);
currentWorkItem =
currentWorkItem.UpdatePropertiesAndOrdinalFrom(changedWorkItem).UpdateTimestamp(TimeSource.GetTime());
var leafStep = WorkflowRepository.GetLeafStep(changedWorkItem.Path);
if (changedWorkItem.Path == currentWorkItem.Path || currentWorkItem.Path == leafStep.Path)
{
WorkflowRepository.UpdateWorkItem(currentWorkItem);
}
else
{
var mover = new WorkItemMover(WorkflowRepository, TimeSource);
mover.MoveWorkItem(currentWorkItem, leafStep);
}
}
private WorkItem CreateParallelledChildrenAndReturnWorkItemToMove(WorkItemTransition transition, WorkStep parallelStep)
{
var helper = new ParallelStepHelper(WorkflowRepository);
var splitWorkItems = helper.SplitForParallelism(transition.WorkItem, parallelStep);
foreach (var splitWorkItem in splitWorkItems)
{
WorkflowRepository.CreateWorkItem(splitWorkItem);
WorkStep expandStep;
var isInExpandStep = WorkflowRepository.IsInExpandStep(transition.WorkItem, out expandStep);
if (isInExpandStep)
{
CreateTransientWorkSteps(splitWorkItem, expandStep);
}
}
var idToMove = ParallelStepHelper.GetParallelId(transition.WorkItem.Id, parallelStep, transition.WorkStep);
var workItemToMove = splitWorkItems.First(wi => wi.Id == idToMove);
return(workItemToMove);
}
private WorkItemTransition TraversePathsForParallelStep(WorkItemTransition transition, IEnumerable <string> pathsBetweenRootAndTarget)
{
var currentWorkItem = transition.WorkItem;
WorkStep parentWorkStep = null;
foreach (var inBetweenPath in pathsBetweenRootAndTarget)
{
var currentWorkStep = WorkflowRepository.GetWorkStep(inBetweenPath);
var currentTransition = new WorkItemTransition(currentWorkItem, currentWorkStep);
if (parentWorkStep != null && WorkflowRepository.IsParallelStep(parentWorkStep))
{
var transitionToParallelRoot = new WorkItemTransition(currentWorkItem, parentWorkStep);
LockAndMoveToParallelRoot(transitionToParallelRoot);
currentWorkItem = CreateParallelledChildrenAndReturnWorkItemToMove(currentTransition, parentWorkStep);
}
parentWorkStep = currentWorkStep;
}
return(new WorkItemTransition(currentWorkItem, transition.WorkStep));
}
public IEnumerable <WorkStep> GetChildWorkSteps(string path)
{
return(WorkflowRepository.GetChildWorkSteps(path));
}
public IEnumerable <WorkItem> GetChildWorkItems(WorkItemParent parent)
{
return(WorkflowRepository.GetChildWorkItems(parent));
}
public WorkStep GetWorkStep(string path)
{
return(WorkflowRepository.GetWorkStep(path));
}
public bool ExistsWorkStep(string path)
{
return(WorkflowRepository.ExistsWorkStep(path));
}
public WorkItem GetWorkItem(string id)
{
return(WorkflowRepository.GetWorkItem(id));
}
public bool ExistsWorkItem(string workItemId)
{
return(WorkflowRepository.ExistsWorkItem(workItemId));
}
public IEnumerable <WorkItem> GetWorkItems(string path)
{
return(WorkflowRepository.GetWorkItems(path));
}
public void DeleteWorkStep(string path)
{
WorkflowRepository.DeleteWorkStep(path);
}
private WorkItem GetTransientParentWorkItem(WorkStep transientStep)
{
var workItemId = transientStep.Path.Split(WorkflowPath.Separator).Last();
return(WorkflowRepository.GetWorkItem(workItemId));
}
public void CreateWorkStep(WorkStep workStep)
{
if (workStep.ParentPath != WorkStep.Root.Path)
{
if (!WorkflowRepository.ExistsWorkStep(workStep.ParentPath))
{
throw new InvalidOperationException("Parent does not exist");
}
}
if (workStep.Type == WorkStepType.Transient)
{
throw new InvalidOperationException("Cannot create transient workstep");
}
WorkStep parent = null;
if (workStep.ParentPath != WorkStep.Root.Path)
{
parent = WorkflowRepository.GetWorkStep(workStep.ParentPath);
}
if (workStep.WorkItemClass == null && parent != null && parent.Type != WorkStepType.Parallel)
{
workStep = workStep.UpdateWorkItemClass(parent.WorkItemClass);
}
if (parent != null && parent.Type == WorkStepType.Parallel)
{
var leaf = WorkflowPath.GetLeafDirectory(workStep.Path);
var workItemClass = parent.WorkItemClass + "-" + leaf;
if (workStep.WorkItemClass == null)
{
workStep = workStep.UpdateWorkItemClass(workItemClass);
}
else if (workStep.WorkItemClass != workItemClass)
{
throw new InvalidOperationException("Invalid work item class for child of parallel step. Expected '" + workItemClass + "' but was '" + workStep.WorkItemClass + "'");
}
}
var siblings = WorkflowRepository.GetChildWorkSteps(workStep.ParentPath);
var firstSibling = siblings.FirstOrDefault();
if (workStep.WorkItemClass == null && firstSibling != null)
{
workStep = workStep.UpdateWorkItemClass(firstSibling.WorkItemClass);
}
if (!workStep.Ordinal.HasValue)
{
var last = siblings.OrderBy(ws => ws.Ordinal).LastOrDefault();
var ordinal = last == null ? 0 : last.Ordinal.Value + 1;
workStep = workStep.UpdateOrdinal(ordinal);
}
if (siblings.Where(ws => ws.Ordinal == workStep.Ordinal).Count() > 0)
{
throw new InvalidOperationException("Cannot create workstep with same ordinal as sibling");
}
if (workStep.WorkItemClass == null)
{
throw new InvalidOperationException("Work item class missing and could not resolve one");
}
if (parent != null && parent.Type == WorkStepType.Expand && parent.WorkItemClass == workStep.WorkItemClass)
{
throw new InvalidOperationException("Child of expand step cannot have same workitem class as parent");
}
if (parent != null && parent.Type != WorkStepType.Expand && parent.Type != WorkStepType.Parallel && parent.WorkItemClass != workStep.WorkItemClass)
{
throw new InvalidOperationException("Incompatible work item class. Should be same as parent");
}
if (firstSibling != null && firstSibling.WorkItemClass != workStep.WorkItemClass)
{
if (parent == null || parent.Type != WorkStepType.Parallel)
{
throw new InvalidOperationException("Incompatible work item class. Should be same as siblings");
}
}
WorkflowRepository.CreateWorkStep(workStep);
}
private bool IsMovingWithinParallelStep(WorkItemTransition transition)
{
return(WorkflowRepository.IsWithinParallelStep(transition.WorkStep));
}
private void ThrowIfMovingToWithinExpandStep(WorkItemTransition transition)
{
WorkStep dummyStep;
if (!WorkflowRepository.IsExpandStep(transition.WorkStep) && !WorkflowRepository.IsWithinTransientStep(transition.WorkStep, out dummyStep) && WorkflowRepository.IsWithinExpandStep(transition.WorkStep))
{
throw new InvalidOperationException("Cannot move item to within expand step");
}
}