public async Task AddOrUpdateAsyncTest()
{
DictionaryChange change = null;
TransactedConcurrentDictionary <int, string> d = new TransactedConcurrentDictionary <int, string>(
new Uri("test://mocks", UriKind.Absolute),
(c) =>
{
change = c;
return(true);
}
);
using (var tx = _stateManager.CreateTransaction())
{
await d.AddOrUpdateAsync(tx, 1, (k) => "One", (k, v) => "Two");
Assert.IsNull(change);
await tx.CommitAsync();
Assert.AreEqual("One", change.Added);
}
change = null;
using (var tx = _stateManager.CreateTransaction())
{
await d.AddOrUpdateAsync(tx, 1, (k) => "One", (k, v) => "Two");
Assert.IsNull(change);
await tx.CommitAsync();
Assert.AreEqual("Two", change.Added);
}
}
public async Task ContainsKeyAsyncTest()
{
DictionaryChange change = null;
TransactedConcurrentDictionary <int, string> d = new TransactedConcurrentDictionary <int, string>(
new Uri("test://mocks", UriKind.Absolute),
(c) =>
{
change = c;
return(true);
}
);
using (var tx = _stateManager.CreateTransaction())
{
await d.AddAsync(tx, 1, "One");
await Assert.ThrowsExceptionAsync <TimeoutException>(
async() =>
{
await ContainsKey(d, 1, TimeSpan.FromMilliseconds(20));
}
);
await tx.CommitAsync();
Assert.IsTrue(await ContainsKey(d, 1));
}
}
public async Task TryGetValueAsyncTest()
{
DictionaryChange change = null;
TransactedConcurrentDictionary <int, string> d = new TransactedConcurrentDictionary <int, string>(
new Uri("test://mocks", UriKind.Absolute),
(c) =>
{
change = c;
return(true);
}
);
using (var tx = _stateManager.CreateTransaction())
{
Assert.IsFalse((await d.TryGetValueAsync(tx, 1, LockMode.Default)).HasValue);
Assert.IsTrue(await d.TryAddAsync(tx, 1, "One"));
using (var tx2 = _stateManager.CreateTransaction())
{
await Assert.ThrowsExceptionAsync <TimeoutException>(
async() =>
{
await d.TryGetValueAsync(tx2, 1, LockMode.Default, timeout: TimeSpan.FromMilliseconds(20));
}
);
}
await tx.CommitAsync();
Assert.AreEqual("One", change.Added);
}
}
public async Task ClearAsyncTest()
{
DictionaryChange change = null;
TransactedConcurrentDictionary <int, string> d = new TransactedConcurrentDictionary <int, string>(
new Uri("test://mocks", UriKind.Absolute),
(c) =>
{
change = c;
return(true);
}
);
using (var tx = _stateManager.CreateTransaction())
{
await d.AddAsync(tx, 1, "One");
await tx.CommitAsync();
Assert.AreEqual(1, await GetCount(d));
}
change = null;
await d.ClearAsync();
Assert.AreEqual(0, await GetCount(d));
Assert.IsNull(change);
}
public void Add(object key, object value)
{
DictionaryChangedEventArgs changedEventArgs = new DictionaryChangedEventArgs(Change.Edit);
Keys.Add((T1)key);
Values.Add((T2)value);
DictionaryChange?.Invoke(this, changedEventArgs);
}
public static DictionaryChange SetValue(TKey key, TValue value)
{
var result = new DictionaryChange();
result.Key = key;
result.Value = value;
result.ChangeType = DictionaryChangeType.SetValue;
return(result);
}
public static DictionaryChange Remove(TKey key)
{
var result = new DictionaryChange();
result.Key = key;
result.Value = default(TValue);
result.ChangeType = DictionaryChangeType.RemoveKey;
return(result);
}
public object this[object key] {
get {
int index = Keys.IndexOf((T1)key);
return(Values[index]);
}
set {
DictionaryChangedEventArgs changedEventArgs = new DictionaryChangedEventArgs(Change.Edit);
DictionaryChange?.Invoke(this, changedEventArgs);
int index = Keys.IndexOf((T1)key);
Values[index] = (T2)value;
}
}
protected void GetPermissionToStart(PfcExecutionContext myPfcec, StepStateMachine ssm)
{
PfcExecutionContext root = myPfcec;
int ascents = m_rootHeight;
while (ascents > 0)
{
root = (PfcExecutionContext)myPfcec.Parent.Payload;
ascents--;
}
Exchange exchange = null;
if (m_myIndex == 0)
{
//Console.WriteLine(myPfcec.Name + " is creating an exchange and injecting it into pfcec " + root.Name + " under key " + m_sequenceKey);
exchange = new Exchange(myPfcec.Model.Executive);
root.Add(m_sequenceKey, exchange);
}
else
{
//Console.WriteLine(myPfcec.Name + " is looking for an exchange in pfcec " + root.Name + " under key " + m_sequenceKey);
DictionaryChange dc = new DictionaryChange(myPfcec_EntryAdded);
while (true)
{
exchange = (Exchange)root[m_sequenceKey];
if (exchange == null)
{
root.EntryAdded += dc;
m_idec = myPfcec.Model.Executive.CurrentEventController;
m_idec.Suspend();
}
else
{
root.EntryAdded -= dc;
break;
}
}
exchange.Take(m_myKey, true); // Only indices 1,2, ... take (and wait?). Index 0 only posts.
//Console.WriteLine(myPfcec.Name + " got the key I was looking for!");
}
Guid nextGuysKey = GuidOps.Increment(m_myKey);
exchange.Post(nextGuysKey, nextGuysKey, false);
//Console.WriteLine(myPfcec.Name + " posted the key the next guy is looking for!");
}
public async Task AddAsyncTest()
{
DictionaryChange change = null;
TransactedConcurrentDictionary <int, string> d = new TransactedConcurrentDictionary <int, string>(
new Uri("test://mocks", UriKind.Absolute),
(c) =>
{
change = c;
return(true);
}
);
using (var tx = _stateManager.CreateTransaction())
{
await d.AddAsync(tx, 1, "One");
await Assert.ThrowsExceptionAsync <ArgumentException>(
async() =>
{
await d.AddAsync(tx, 1, "Two");
}
);
Assert.IsNull(change);
using (var tx2 = _stateManager.CreateTransaction())
{
await Assert.ThrowsExceptionAsync <TimeoutException>(
async() =>
{
await d.AddAsync(tx2, 1, "Three", TimeSpan.FromMilliseconds(20));
}
);
}
Assert.IsNull(change);
await tx.CommitAsync();
}
Assert.AreEqual("One", change.Added);
Assert.IsNull(change.Removed);
Assert.AreEqual("One", (await GetValue(d, 1)).Value);
}
public async Task TryAddAsyncTest()
{
DictionaryChange change = null;
TransactedConcurrentDictionary <int, string> d = new TransactedConcurrentDictionary <int, string>(
new Uri("test://mocks", UriKind.Absolute),
(c) =>
{
change = c;
return(true);
}
);
using (var tx = _stateManager.CreateTransaction())
{
Assert.IsTrue(await d.TryAddAsync(tx, 1, "One"));
Assert.IsFalse(await d.TryAddAsync(tx, 1, "Two"));
using (var tx2 = _stateManager.CreateTransaction())
{
await Assert.ThrowsExceptionAsync <TimeoutException>(
async() =>
{
await d.TryAddAsync(tx2, 1, "Three", timeout: TimeSpan.FromMilliseconds(20));
}
);
}
await tx.CommitAsync();
Assert.AreEqual("One", change.Added);
}
using (var tx = _stateManager.CreateTransaction())
{
Assert.IsFalse(await d.TryAddAsync(tx, 1, "Three"));
Assert.IsTrue(await d.TryAddAsync(tx, 4, "Four"));
Assert.IsTrue(await d.TryAddAsync(tx, 5, "Five"));
await tx.CommitAsync();
}
Assert.AreEqual(3, await GetCount(d));
Assert.AreEqual("One", (await GetValue(d, 1)).Value);
Assert.AreEqual("Four", (await GetValue(d, 4)).Value);
Assert.AreEqual("Five", (await GetValue(d, 5)).Value);
}
public async Task SetAsyncTest()
{
DictionaryChange change = null;
TransactedConcurrentDictionary <int, string> d = new TransactedConcurrentDictionary <int, string>(
new Uri("test://mocks", UriKind.Absolute),
(c) =>
{
change = c;
return(true);
}
);
using (var tx = _stateManager.CreateTransaction())
{
await Assert.ThrowsExceptionAsync <ArgumentException>(
async() =>
{
await d.SetAsync(tx, 1, "One");
}
);
await d.AddAsync(tx, 2, "Two");
await tx.CommitAsync();
}
using (var tx = _stateManager.CreateTransaction())
{
await d.SetAsync(tx, 2, "Three");
await tx.CommitAsync();
Assert.AreEqual("Two", change.Removed);
Assert.AreEqual("Three", change.Added);
}
Assert.AreEqual(1, await GetCount(d));
}
/// <summary>
/// Queues a remove modification for a given key. Modifications are applied in Repaint.
/// </summary>
public void Remove(TKey key)
{
this.queuedChanges.Enqueue(DictionaryChange.Remove(key));
}
/// <summary>
/// Queues a set value modification for a given key. Modifications are applied in Repaint.
/// </summary>
public void SetValue(TKey key, object value)
{
this.queuedChanges.Enqueue(DictionaryChange.SetValue(key, (TValue)value));
}
public async Task SetAsyncTest()
{
DictionaryChange change = null;
TransactedConcurrentDictionary <int, string> d = new TransactedConcurrentDictionary <int, string>(
new Uri("test://mocks", UriKind.Absolute),
(c) =>
{
change = c;
return(true);
}
);
using (var tx = _stateManager.CreateTransaction())
{
await d.SetAsync(tx, 1, "Zero");
}
using (var tx = _stateManager.CreateTransaction())
{
ConditionalValue <string> value = await d.TryGetValueAsync(tx, 1, LockMode.Default);
Assert.IsFalse(value.HasValue);
}
using (var tx = _stateManager.CreateTransaction())
{
await d.SetAsync(tx, 1, "One");
await tx.CommitAsync();
Assert.AreEqual("One", change.Added);
Assert.AreEqual(null, change.Removed);
}
using (var tx = _stateManager.CreateTransaction())
{
await d.SetAsync(tx, 1, "Two");
}
using (var tx = _stateManager.CreateTransaction())
{
ConditionalValue <string> value = await d.TryGetValueAsync(tx, 1, LockMode.Default);
Assert.AreEqual("One", value.Value);
}
using (var tx = _stateManager.CreateTransaction())
{
await d.AddAsync(tx, 2, "Two");
await tx.CommitAsync();
}
using (var tx = _stateManager.CreateTransaction())
{
await d.SetAsync(tx, 2, "Three");
await tx.CommitAsync();
Assert.AreEqual("Two", change.Removed);
Assert.AreEqual("Three", change.Added);
}
Assert.AreEqual(2, await GetCount(d));
}
//For flowchart reacting to ModelItem changes we are concerned of the following scenarios:
//1. FlowElements being deleted from the Flowchart.Nodes collection or Flowswitch cases being deleted from ItemsCollection
//2. FlowElements being added to the Flowchart.Nodes collection or Flowswitch cases being added from ItemsCollection
//3. Properties being changed in FlowStep(Next), FlowDecision(True, false), FlowSwitch(Default) (Any of the flowelemnet should be present in the elements collection).
//4. Flowswitch cases being added/remove via Cases.Dicitionary
void ModelTreeManager_EditingScopeCompleted(object sender, EditingScopeEventArgs e)
{
Fx.Assert(this.panel != null, "This code should not be hit if panel is null");
foreach (Change change in e.EditingScope.Changes)
{
//Case 1, 2.
if (change is CollectionChange)
{
CollectionChange collectionChange = change as CollectionChange;
if (collectionChange.Collection.Equals(this.ModelItem.Properties["Nodes"].Collection))
{
if (collectionChange.Operation == CollectionChange.OperationType.Delete)
{
this.DeleteShapeVisual(this.flowNodeToUIElement[collectionChange.Item]);
}
else
{
this.AddFlowElementsToDesigner(new List <ModelItem> {
collectionChange.Item
});
//An editing scope change references the ModelItem.
//Hence in case of multiple changes to the same modelItem within the same EditingScope, we will see all the changes on the ModelItem for each change.
//Eg. Suppose following two changes are in the same editing scope: 1. Add ModelItem item1 to Collection, 2. Change a property on this MI, item1.Prop1
//In this case, EditingScope.Changes.Count will be 2.
//Since an EditingScope change keeps a reference to the ModelItem changed, when we process the first change, the second change would already be reflected on the ModelItem.
//Hence, while processing CollectionChange for item1, item1.Prop1 will already reflect the new value.
//Also there will be another change notifying the change in item1.Prop1.
//AddFlowElementsToDesigner() method, walks through the properties of a newly added item and creates any links if required.
//This is necessary for Paste scenario where we want to create links between Items added to the Nodes Collection.
//Because of this behavior of AddFlowElementsToDesigner(), before reacting to a property change for adding a link, we will always verify that the link does not already exists.
}
}
if (collectionChange.Collection.Parent != null && collectionChange.Collection.Parent.Parent != null &&
this.ModelItem.Properties["Nodes"].Collection.Contains(collectionChange.Collection.Parent.Parent) &&
collectionChange.Collection.Parent.Parent.ItemType.IsGenericType &&
collectionChange.Collection.Parent.Parent.ItemType.GetGenericTypeDefinition() == typeof(FlowSwitch <>))
{
ModelItem item = collectionChange.Item;
string caseName = GenericFlowSwitchHelper.GetString(item.Properties["Key"].ComputedValue, item.Properties["Key"].PropertyType);
Connector connector = this.GetLinkOnCanvas(collectionChange.Collection.Parent.Parent,
item.Properties["Value"].Value, GenericFlowSwitchHelper.FlowSwitchCasesKeyIdentifier + caseName);
if (collectionChange.Operation == CollectionChange.OperationType.Delete)
{
if (connector != null)
{
this.DeleteLinkVisual(connector);
}
}
else if (collectionChange.Operation == CollectionChange.OperationType.Insert)
{
if (connector == null)
{
//Prepending GenericFlowSwitchHelper.FlowSwitchCasesKeyIdentifier to differentiate between the FlowSwitch's Property Default and key Default.
connector = this.CreatePropertyLink(collectionChange.Collection.Parent.Parent,
item.Properties["Value"].Value,
GenericFlowSwitchHelper.FlowSwitchCasesKeyIdentifier + caseName);
Fx.Assert(connector != null, "Link not created");
this.panel.Children.Add(connector);
}
else
{
RefreshFlowSwitchLinkModelItem(/* flowSwitchModelItem = */ collectionChange.Collection.Parent.Parent, connector, false);
}
}
}
}
else if (change is DictionaryChange)
{
// case 4
DictionaryChange dictionaryChange = change as DictionaryChange;
if (dictionaryChange.Dictionary.Parent != null &&
this.ModelItem.Properties["Nodes"].Collection.Contains(dictionaryChange.Dictionary.Parent) &&
dictionaryChange.Dictionary.Parent.ItemType.IsGenericType &&
dictionaryChange.Dictionary.Parent.ItemType.GetGenericTypeDefinition() == typeof(FlowSwitch <>))
{
ModelItem flowSwitchModelItem = dictionaryChange.Dictionary.Parent;
ModelItem caseTargetModelItem = dictionaryChange.Value;
string caseName = GenericFlowSwitchHelper.GetString(dictionaryChange.Key == null ? null : dictionaryChange.Key.GetCurrentValue(), dictionaryChange.Key == null ? null : dictionaryChange.Key.ItemType);
string caseNameInModelItem = GenericFlowSwitchHelper.FlowSwitchCasesKeyIdentifier + caseName;
Connector connector = this.GetLinkOnCanvas(
flowSwitchModelItem,
caseTargetModelItem,
caseNameInModelItem);
if (dictionaryChange.Operation == DictionaryChange.OperationType.Delete)
{
if (connector != null)
{
this.DeleteLinkVisual(connector);
}
}
else if (dictionaryChange.Operation == DictionaryChange.OperationType.Insert)
{
if (connector == null)
{
connector = this.CreatePropertyLink(
flowSwitchModelItem,
caseTargetModelItem,
caseNameInModelItem);
this.panel.Children.Add(connector);
}
}
}
}
//Case 3.
else if (change is PropertyChange)
{
PropertyChange propertyChange = change as PropertyChange;
if (this.ModelItem.Properties["Nodes"].Collection.Contains(propertyChange.Owner) ||
(propertyChange.PropertyName == "StartNode" && propertyChange.Owner == this.ModelItem))
{
if (propertyChange.OldValue != null &&
IsFlowNode(propertyChange.OldValue))
{
Connector link = GetLinkOnCanvas(propertyChange.Owner, propertyChange.OldValue, propertyChange.PropertyName);
//Debug.Assert(link != null, "Link not found on designer");
if (link != null)
{
this.DeleteLinkVisual(link);
}
}
if (propertyChange.NewValue != null &&
IsFlowNode(propertyChange.NewValue))
{
Connector oldLink = GetLinkOnCanvas(propertyChange.Owner, propertyChange.NewValue, propertyChange.PropertyName);
//If this connector has already been added don't add again.
if (oldLink == null)
{
Connector link = CreatePropertyLink(propertyChange.Owner, propertyChange.NewValue, propertyChange.PropertyName);
Fx.Assert(link != null, "Link not created");
this.panel.Children.Add(link);
}
else
{
if (GenericFlowSwitchHelper.IsGenericFlowSwitch(propertyChange.Owner.ItemType))
{
this.RefreshFlowSwitchLinkModelItem(/* flowSwitchModelItem = */ propertyChange.Owner, oldLink, true);
}
}
}
//handling for the case where the FlowStep.Action changes:
//Explicitly adding a check for FlowStep, because other FlowNodes have properties of type Activity, which we don't want to react to.
//AddFlowElementsToDesigner() will add the links originating out of the shape that is changing.
//We have to take care of refreshing the links coming into the shape that is changing.
if (typeof(FlowStep).IsAssignableFrom(propertyChange.Owner.ItemType))
{
List <Connector> oldIncomingConnectors = new List <Connector>();
if (propertyChange.OldValue != null && IsFlowStepAction(propertyChange.OldValue))
{
UIElement oldShape = this.flowNodeToUIElement[propertyChange.Owner];
oldIncomingConnectors = this.GetInComingConnectors(oldShape);
this.DeleteShapeVisual(oldShape);
}
if (propertyChange.NewValue != null && IsFlowStepAction(propertyChange.NewValue))
{
this.AddFlowElementsToDesigner(new List <ModelItem> {
propertyChange.Owner
});
foreach (Connector oldConnector in oldIncomingConnectors)
{
Connector newConnector = CreateLink(FreeFormPanel.GetSourceConnectionPoint(oldConnector),
this.flowNodeToUIElement[propertyChange.Owner], FlowchartDesigner.GetLinkModelItem(oldConnector));
this.panel.Children.Add(newConnector);
}
}
}
}
}
}
}
