private void AddInstanceExtension(WorkflowInstanceExtensionProvider extensionProvider)
{
Fx.Assert(this.instanceExtensions != null, "instanceExtensions should be setup by now");
var newExtension = extensionProvider.ProvideValue();
if (newExtension is SymbolResolver)
{
throw FxTrace.Exception.AsError(new InvalidOperationException(SR.SymbolResolverMustBeSingleton));
}
// for IWorkflowInstance we key off the type of the value, not the declared type
if (!this.shouldSetInstanceForInstanceExtensions && newExtension is IWorkflowInstanceExtension)
{
this.shouldSetInstanceForInstanceExtensions = true;
}
if (!this.hasTrackingParticipant && extensionProvider.IsMatch <TrackingParticipant>(newExtension))
{
this.hasTrackingParticipant = true;
}
if (!this.hasPersistenceModule && extensionProvider.IsMatch <IPersistencePipelineModule>(newExtension))
{
this.hasPersistenceModule = true;
}
this.instanceExtensions?.Add(new KeyValuePair <WorkflowInstanceExtensionProvider, object>(extensionProvider, newExtension));
WorkflowInstanceExtensionManager.AddExtensionClosure(newExtension, ref this.additionalInstanceExtensions, ref this.hasTrackingParticipant, ref this.hasPersistenceModule);
}
// locks down the given extensions manager and runs cache metadata on the workflow definition
protected void RegisterExtensionManager(WorkflowInstanceExtensionManager extensionManager)
{
ValidateWorkflow(extensionManager);
this.extensions = WorkflowInstanceExtensionManager.CreateInstanceExtensions(this.WorkflowDefinition, extensionManager);
if (this.extensions != null)
{
this.HasPersistenceModule = this.extensions.HasPersistenceModule;
}
}
void ValidateWorkflow(WorkflowInstanceExtensionManager extensionManager)
{
if (!WorkflowDefinition.IsRuntimeReady)
{
LocationReferenceEnvironment localEnvironment = this.hostEnvironment;
if (localEnvironment == null)
{
LocationReferenceEnvironment parentEnvironment = null;
if (extensionManager != null && extensionManager.SymbolResolver != null)
{
parentEnvironment = extensionManager.SymbolResolver.AsLocationReferenceEnvironment();
}
localEnvironment = new ActivityLocationReferenceEnvironment(parentEnvironment);
}
IList <ValidationError> validationErrors = null;
ActivityUtilities.CacheRootMetadata(WorkflowDefinition, localEnvironment, ProcessActivityTreeOptions.FullCachingOptions, null, ref validationErrors);
ActivityValidationServices.ThrowIfViolationsExist(validationErrors);
}
}
private void AddInstanceExtension(WorkflowInstanceExtensionProvider extensionProvider)
{
object obj2 = extensionProvider.ProvideValue();
if (obj2 is SymbolResolver)
{
throw FxTrace.Exception.AsError(new InvalidOperationException(System.Activities.SR.SymbolResolverMustBeSingleton));
}
if (!this.shouldSetInstanceForInstanceExtensions && (obj2 is IWorkflowInstanceExtension))
{
this.shouldSetInstanceForInstanceExtensions = true;
}
if (!this.hasTrackingParticipant && extensionProvider.IsMatch <TrackingParticipant>(obj2))
{
this.hasTrackingParticipant = true;
}
if (!this.hasPersistenceModule && extensionProvider.IsMatch <IPersistencePipelineModule>(obj2))
{
this.hasPersistenceModule = true;
}
this.instanceExtensions.Add(new KeyValuePair <WorkflowInstanceExtensionProvider, object>(extensionProvider, obj2));
WorkflowInstanceExtensionManager.AddExtensionClosure(obj2, ref this.additionalInstanceExtensions, ref this.hasTrackingParticipant, ref this.hasPersistenceModule);
}
internal static WorkflowInstanceExtensionCollection CreateInstanceExtensions(Activity workflowDefinition, WorkflowInstanceExtensionManager extensionManager)
{
Fx.Assert(workflowDefinition.IsRuntimeReady, "activity should be ready with extensions after a successful CacheMetadata call");
if (extensionManager != null)
{
extensionManager.MakeReadOnly();
return(new WorkflowInstanceExtensionCollection(workflowDefinition, extensionManager));
}
else if ((workflowDefinition.DefaultExtensionsCount > 0) || (workflowDefinition.RequiredExtensionTypesCount > 0))
{
return(new WorkflowInstanceExtensionCollection(workflowDefinition, null));
}
else
{
return(null);
}
}
internal WorkflowInstanceExtensionCollection(Activity workflowDefinition, WorkflowInstanceExtensionManager extensionManager)
{
Dictionary <Type, WorkflowInstanceExtensionProvider> dictionary;
HashSet <Type> set;
this.extensionManager = extensionManager;
int capacity = 0;
if (extensionManager != null)
{
capacity = extensionManager.ExtensionProviders.Count;
this.hasTrackingParticipant = extensionManager.HasSingletonTrackingParticipant;
this.hasPersistenceModule = extensionManager.HasSingletonPersistenceModule;
this.allSingletonExtensions = this.extensionManager.GetAllSingletonExtensions();
}
else
{
this.allSingletonExtensions = WorkflowInstanceExtensionManager.EmptySingletonExtensions;
}
Dictionary <Type, WorkflowInstanceExtensionProvider> dictionary2 = null;
if (workflowDefinition.GetActivityExtensionInformation(out dictionary, out set))
{
HashSet <Type> extensionTypes = new HashSet <Type>();
if (extensionManager != null)
{
extensionManager.AddAllExtensionTypes(extensionTypes);
}
if (dictionary != null)
{
dictionary2 = new Dictionary <Type, WorkflowInstanceExtensionProvider>(dictionary.Count);
foreach (KeyValuePair <Type, WorkflowInstanceExtensionProvider> pair in dictionary)
{
Type key = pair.Key;
if (!System.Runtime.TypeHelper.ContainsCompatibleType(extensionTypes, key))
{
List <Type> list = null;
bool flag = false;
foreach (Type type2 in dictionary2.Keys)
{
if (System.Runtime.TypeHelper.AreReferenceTypesCompatible(type2, key))
{
flag = true;
break;
}
if (System.Runtime.TypeHelper.AreReferenceTypesCompatible(key, type2))
{
if (list == null)
{
list = new List <Type>();
}
list.Add(type2);
}
}
if (list != null)
{
for (int i = 0; i < list.Count; i++)
{
dictionary2.Remove(list[i]);
}
}
if (!flag)
{
dictionary2.Add(key, pair.Value);
}
}
}
if (dictionary2.Count > 0)
{
extensionTypes.UnionWith(dictionary2.Keys);
capacity += dictionary2.Count;
}
}
if ((set != null) && (set.Count > 0))
{
foreach (Type type3 in set)
{
if (!System.Runtime.TypeHelper.ContainsCompatibleType(extensionTypes, type3))
{
throw FxTrace.Exception.AsError(new ValidationException(System.Activities.SR.RequiredExtensionTypeNotFound(type3.ToString())));
}
}
}
}
if (capacity > 0)
{
this.instanceExtensions = new List <KeyValuePair <WorkflowInstanceExtensionProvider, object> >(capacity);
if (extensionManager != null)
{
List <KeyValuePair <Type, WorkflowInstanceExtensionProvider> > extensionProviders = extensionManager.ExtensionProviders;
for (int j = 0; j < extensionProviders.Count; j++)
{
KeyValuePair <Type, WorkflowInstanceExtensionProvider> pair2 = extensionProviders[j];
this.AddInstanceExtension(pair2.Value);
}
}
if (dictionary2 != null)
{
foreach (WorkflowInstanceExtensionProvider provider in dictionary2.Values)
{
this.AddInstanceExtension(provider);
}
}
}
}
internal WorkflowInstanceExtensionCollection(Activity workflowDefinition, WorkflowInstanceExtensionManager extensionManager)
{
this.extensionManager = extensionManager;
int extensionProviderCount = 0;
if (extensionManager != null)
{
extensionProviderCount = extensionManager.ExtensionProviders.Count;
this.hasTrackingParticipant = extensionManager.HasSingletonTrackingParticipant;
this.hasPersistenceModule = extensionManager.HasSingletonPersistenceModule;
// create an uber-IEnumerable to simplify our iteration code
this.allSingletonExtensions = this.extensionManager.GetAllSingletonExtensions();
}
else
{
this.allSingletonExtensions = WorkflowInstanceExtensionManager.EmptySingletonExtensions;
}
// Resolve activity extensions
Dictionary <Type, WorkflowInstanceExtensionProvider> filteredActivityExtensionProviders = null;
if (workflowDefinition.GetActivityExtensionInformation(out Dictionary <Type, WorkflowInstanceExtensionProvider> activityExtensionProviders, out HashSet <Type> requiredActivityExtensionTypes))
{
// a) filter out the extension Types that were already configured by the host. Note that only "primary" extensions are in play here, not
// "additional" extensions
HashSet <Type> allExtensionTypes = new HashSet <Type>();
if (extensionManager != null)
{
extensionManager.AddAllExtensionTypes(allExtensionTypes);
}
if (activityExtensionProviders != null)
{
filteredActivityExtensionProviders = new Dictionary <Type, WorkflowInstanceExtensionProvider>(activityExtensionProviders.Count);
foreach (KeyValuePair <Type, WorkflowInstanceExtensionProvider> keyedActivityExtensionProvider in activityExtensionProviders)
{
Type newExtensionProviderType = keyedActivityExtensionProvider.Key;
if (!TypeHelper.ContainsCompatibleType(allExtensionTypes, newExtensionProviderType))
{
// first see if the new provider supersedes any existing ones
List <Type> typesToRemove = null;
bool skipNewExtensionProvider = false;
foreach (Type existingExtensionProviderType in filteredActivityExtensionProviders.Keys)
{
// Use AreReferenceTypesCompatible for performance since we know that all of these must be reference types
if (TypeHelper.AreReferenceTypesCompatible(existingExtensionProviderType, newExtensionProviderType))
{
skipNewExtensionProvider = true;
break;
}
if (TypeHelper.AreReferenceTypesCompatible(newExtensionProviderType, existingExtensionProviderType))
{
if (typesToRemove == null)
{
typesToRemove = new List <Type>();
}
typesToRemove.Add(existingExtensionProviderType);
}
}
// prune unnecessary extension providers (either superseded by the new extension or by an existing extension that supersedes them both)
if (typesToRemove != null)
{
for (int i = 0; i < typesToRemove.Count; i++)
{
filteredActivityExtensionProviders.Remove(typesToRemove[i]);
}
}
// and add a new extension if necessary
if (!skipNewExtensionProvider)
{
filteredActivityExtensionProviders.Add(newExtensionProviderType, keyedActivityExtensionProvider.Value);
}
}
}
if (filteredActivityExtensionProviders.Count > 0)
{
allExtensionTypes.UnionWith(filteredActivityExtensionProviders.Keys);
extensionProviderCount += filteredActivityExtensionProviders.Count;
}
}
// b) Validate that all required extensions will be provided
if (requiredActivityExtensionTypes != null && requiredActivityExtensionTypes.Count > 0)
{
foreach (Type requiredType in requiredActivityExtensionTypes)
{
if (!TypeHelper.ContainsCompatibleType(allExtensionTypes, requiredType))
{
throw FxTrace.Exception.AsError(new ValidationException(SR.RequiredExtensionTypeNotFound(requiredType.ToString())));
}
}
}
}
// Finally, if our checks of passed, resolve our delegates
if (extensionProviderCount > 0)
{
this.instanceExtensions = new List <KeyValuePair <WorkflowInstanceExtensionProvider, object> >(extensionProviderCount);
if (extensionManager != null)
{
List <KeyValuePair <Type, WorkflowInstanceExtensionProvider> > extensionProviders = extensionManager.ExtensionProviders;
for (int i = 0; i < extensionProviders.Count; i++)
{
KeyValuePair <Type, WorkflowInstanceExtensionProvider> extensionProvider = extensionProviders[i];
AddInstanceExtension(extensionProvider.Value);
}
}
if (filteredActivityExtensionProviders != null)
{
foreach (WorkflowInstanceExtensionProvider extensionProvider in filteredActivityExtensionProviders.Values)
{
AddInstanceExtension(extensionProvider);
}
}
}
}
protected void RegisterExtensionManager(WorkflowInstanceExtensionManager extensionManager)
{
throw new NotImplementedException();
}
internal static WorkflowInstanceExtensionCollection CreateInstanceExtensions(Activity workflowDefinition, WorkflowInstanceExtensionManager extensionManager)
{
if (extensionManager != null)
{
extensionManager.MakeReadOnly();
return(new WorkflowInstanceExtensionCollection(workflowDefinition, extensionManager));
}
if ((workflowDefinition.DefaultExtensionsCount <= 0) && (workflowDefinition.RequiredExtensionTypesCount <= 0))
{
return(null);
}
return(new WorkflowInstanceExtensionCollection(workflowDefinition, null));
}