示例#1
0
        private void AddInstanceExtension(WorkflowInstanceExtensionProvider extensionProvider)
        {
            Fx.Assert(_instanceExtensions != null, "instanceExtensions should be setup by now");
            object newExtension = extensionProvider.ProvideValue();

            if (newExtension is SymbolResolver)
            {
                throw CoreWf.Internals.FxTrace.Exception.AsError(new InvalidOperationException(SR.SymbolResolverMustBeSingleton));
            }

            // for IWorkflowInstance we key off the type of the value, not the declared type
            if (!_shouldSetInstanceForInstanceExtensions && newExtension is IWorkflowInstanceExtension)
            {
                _shouldSetInstanceForInstanceExtensions = true;
            }
            if (!_hasTrackingParticipant && extensionProvider.IsMatch <TrackingParticipant>(newExtension))
            {
                _hasTrackingParticipant = true;
            }
            if (!_hasPersistenceModule && extensionProvider.IsMatch <IPersistencePipelineModule>(newExtension))
            {
                _hasPersistenceModule = true;
            }

            _instanceExtensions.Add(new KeyValuePair <WorkflowInstanceExtensionProvider, object>(extensionProvider, newExtension));

            WorkflowInstanceExtensionManager.AddExtensionClosure(newExtension, ref _additionalInstanceExtensions, ref _hasTrackingParticipant, ref _hasPersistenceModule);
        }
示例#2
0
 // locks down the given extensions manager and runs cache metadata on the workflow definition
 protected void RegisterExtensionManager(WorkflowInstanceExtensionManager extensionManager)
 {
     ValidateWorkflow(extensionManager);
     _extensions = WorkflowInstanceExtensionManager.CreateInstanceExtensions(this.WorkflowDefinition, extensionManager);
     if (_extensions != null)
     {
         this.HasPersistenceModule = _extensions.HasPersistenceModule;
     }
 }
示例#3
0
        //void ThrowIfDynamicUpdateErrorExists(Collection<ActivityBlockingUpdate> updateErrors)
        //{
        //    if (updateErrors != null && updateErrors.Count > 0)
        //    {
        //        // update error found
        //        // exit early

        //        throw CoreWf.Internals.FxTrace.Exception.AsError(new InstanceUpdateException(updateErrors));
        //    }
        //}

        private void ValidateWorkflow(WorkflowInstanceExtensionManager extensionManager)
        {
            if (!WorkflowDefinition.IsRuntimeReady)
            {
                LocationReferenceEnvironment localEnvironment = _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);
            }
        }
 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);
     }
 }
示例#5
0
        internal WorkflowInstanceExtensionCollection(Activity workflowDefinition, WorkflowInstanceExtensionManager extensionManager)
        {
            _extensionManager = extensionManager;

            int extensionProviderCount = 0;

            if (extensionManager != null)
            {
                extensionProviderCount  = extensionManager.ExtensionProviders.Count;
                _hasTrackingParticipant = extensionManager.HasSingletonTrackingParticipant;
                _hasPersistenceModule   = extensionManager.HasSingletonPersistenceModule;

                // create an uber-IEnumerable to simplify our iteration code
                _allSingletonExtensions = _extensionManager.GetAllSingletonExtensions();
            }
            else
            {
                _allSingletonExtensions = WorkflowInstanceExtensionManager.EmptySingletonExtensions;
            }

            // Resolve activity extensions
            Dictionary <Type, WorkflowInstanceExtensionProvider> activityExtensionProviders;
            Dictionary <Type, WorkflowInstanceExtensionProvider> filteredActivityExtensionProviders = null;
            HashSet <Type> requiredActivityExtensionTypes;

            if (workflowDefinition.GetActivityExtensionInformation(out activityExtensionProviders, out 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 CoreWf.Internals.FxTrace.Exception.AsError(new ValidationException(SR.RequiredExtensionTypeNotFound(requiredType.ToString())));
                        }
                    }
                }
            }

            // Finally, if our checks of passed, resolve our delegates
            if (extensionProviderCount > 0)
            {
                _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);
                    }
                }
            }
        }