Code:
/ 4.0 / 4.0 / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / cdf / src / WF / Activities / Parallel.cs / 1305376 / Parallel.cs
namespace System.Workflow.Activities { #region Imports using System; using System.Text; using System.Reflection; using System.Collections; using System.CodeDom; using System.ComponentModel; using System.ComponentModel.Design; using System.Drawing.Design; using System.Drawing; using System.Workflow.ComponentModel; using System.Workflow.ComponentModel.Design; using System.Runtime.Serialization; using System.Collections.Generic; using System.Workflow.ComponentModel.Compiler; using System.Workflow.Runtime.DebugEngine; using System.Workflow.Activities.Common; #endregion [SRDescription(SR.ParallelActivityDescription)] [ToolboxItem(typeof(ParallelToolboxItem))] [ToolboxBitmap(typeof(ParallelActivity), "Resources.Parallel.png")] [Designer(typeof(ParallelDesigner), typeof(IDesigner))] [ActivityValidator(typeof(ParallelValidator))] [SRCategory(SR.Standard)] [WorkflowDebuggerSteppingAttribute(WorkflowDebuggerSteppingOption.Concurrent)] public sealed class ParallelActivity: CompositeActivity, IActivityEventListener{ #region Constructors public ParallelActivity() { } public ParallelActivity(string name) : base(name) { } #endregion #region Protected Methods protected override ActivityExecutionStatus Execute(ActivityExecutionContext executionContext) { if (executionContext == null) throw new ArgumentNullException("executionContext"); //Tomark that execute method is called for this activity. this.IsExecuting = true; for (int i = 0; i < this.EnabledActivities.Count; ++i) { Activity childActivity = this.EnabledActivities[i]; childActivity.RegisterForStatusChange(Activity.ClosedEvent, this); executionContext.ExecuteActivity(childActivity); } return (this.EnabledActivities.Count == 0) ? ActivityExecutionStatus.Closed : ActivityExecutionStatus.Executing; } protected override ActivityExecutionStatus Cancel(ActivityExecutionContext executionContext) { if (executionContext == null) throw new ArgumentNullException("executionContext"); bool canCloseNow = true; for (int i = 0; i < this.EnabledActivities.Count; ++i) { Activity childActivity = this.EnabledActivities[i]; if (childActivity.ExecutionStatus == ActivityExecutionStatus.Executing) { executionContext.CancelActivity(childActivity); canCloseNow = false; } else if (childActivity.ExecutionStatus == ActivityExecutionStatus.Canceling || childActivity.ExecutionStatus == ActivityExecutionStatus.Faulting) { canCloseNow = false; } } return canCloseNow ? ActivityExecutionStatus.Closed : ActivityExecutionStatus.Canceling; } protected override void OnClosed(IServiceProvider provider) { base.RemoveProperty(ParallelActivity.IsExecutingProperty); } protected override void OnActivityChangeAdd(ActivityExecutionContext executionContext, Activity addedActivity) { if (executionContext == null) throw new ArgumentNullException("executionContext"); if (addedActivity == null) throw new ArgumentNullException("addedActivity"); ParallelActivity parallel = executionContext.Activity as ParallelActivity; if (parallel.ExecutionStatus == ActivityExecutionStatus.Executing && parallel.IsExecuting) { addedActivity.RegisterForStatusChange(Activity.ClosedEvent, this); executionContext.ExecuteActivity(addedActivity); } } protected override void OnActivityChangeRemove(ActivityExecutionContext rootExecutionContext, Activity removedActivity) { } protected override void OnWorkflowChangesCompleted(ActivityExecutionContext executionContext) { base.OnWorkflowChangesCompleted(executionContext); if (this.IsExecuting) { bool canCloseNow = true; for (int i = 0; i < this.EnabledActivities.Count; ++i) { Activity childActivity = this.EnabledActivities[i]; if (childActivity.ExecutionStatus != ActivityExecutionStatus.Closed) { canCloseNow = false; break; } } if (canCloseNow) executionContext.CloseActivity(); } } #endregion #region IActivityEventListener Members void IActivityEventListener .OnEvent(object sender, ActivityExecutionStatusChangedEventArgs e) { if (sender == null) throw new ArgumentNullException("sender"); if (e == null) throw new ArgumentNullException("e"); ActivityExecutionContext context = sender as ActivityExecutionContext; if (context == null) throw new ArgumentException(SR.Error_SenderMustBeActivityExecutionContext, "sender"); ParallelActivity parallel = context.Activity as ParallelActivity; e.Activity.UnregisterForStatusChange(Activity.ClosedEvent, this); bool canCloseNow = true; for (int i = 0; i < parallel.EnabledActivities.Count; ++i) { Activity childActivity = parallel.EnabledActivities[i]; if (!(childActivity.ExecutionStatus == ActivityExecutionStatus.Initialized || childActivity.ExecutionStatus == ActivityExecutionStatus.Closed)) { canCloseNow = false; break; } } if (canCloseNow) context.CloseActivity(); } #endregion #region Runtime Specific Data //Runtime Properties static DependencyProperty IsExecutingProperty = DependencyProperty.Register("IsExecuting", typeof(bool), typeof(ParallelActivity), new PropertyMetadata(false)); private bool IsExecuting { get { return (bool)base.GetValue(IsExecutingProperty); } set { base.SetValue(IsExecutingProperty, value); } } #endregion } #region Validator internal sealed class ParallelValidator : CompositeActivityValidator { public override ValidationErrorCollection Validate(ValidationManager manager, object obj) { ValidationErrorCollection validationErrors = base.Validate(manager, obj); ParallelActivity parallel = obj as ParallelActivity; if (parallel == null) throw new ArgumentException(SR.GetString(SR.Error_UnexpectedArgumentType, typeof(ParallelActivity).FullName), "obj"); // Validate number of children if (parallel.EnabledActivities.Count < 2) validationErrors.Add(new ValidationError(SR.GetString(SR.Error_ParallelLessThanTwoChildren), ErrorNumbers.Error_ParallelLessThanTwoChildren)); bool notAllSequence = false; foreach(Activity activity in parallel.EnabledActivities) { if(activity.GetType() != typeof(SequenceActivity)) { notAllSequence = true; } } // Validate that all child activities are sequence activities. if (notAllSequence) validationErrors.Add(new ValidationError(SR.GetString(SR.Error_ParallelNotAllSequence), ErrorNumbers.Error_ParallelNotAllSequence)); return validationErrors; } } #endregion } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved. namespace System.Workflow.Activities { #region Imports using System; using System.Text; using System.Reflection; using System.Collections; using System.CodeDom; using System.ComponentModel; using System.ComponentModel.Design; using System.Drawing.Design; using System.Drawing; using System.Workflow.ComponentModel; using System.Workflow.ComponentModel.Design; using System.Runtime.Serialization; using System.Collections.Generic; using System.Workflow.ComponentModel.Compiler; using System.Workflow.Runtime.DebugEngine; using System.Workflow.Activities.Common; #endregion [SRDescription(SR.ParallelActivityDescription)] [ToolboxItem(typeof(ParallelToolboxItem))] [ToolboxBitmap(typeof(ParallelActivity), "Resources.Parallel.png")] [Designer(typeof(ParallelDesigner), typeof(IDesigner))] [ActivityValidator(typeof(ParallelValidator))] [SRCategory(SR.Standard)] [WorkflowDebuggerSteppingAttribute(WorkflowDebuggerSteppingOption.Concurrent)] public sealed class ParallelActivity: CompositeActivity, IActivityEventListener { #region Constructors public ParallelActivity() { } public ParallelActivity(string name) : base(name) { } #endregion #region Protected Methods protected override ActivityExecutionStatus Execute(ActivityExecutionContext executionContext) { if (executionContext == null) throw new ArgumentNullException("executionContext"); //Tomark that execute method is called for this activity. this.IsExecuting = true; for (int i = 0; i < this.EnabledActivities.Count; ++i) { Activity childActivity = this.EnabledActivities[i]; childActivity.RegisterForStatusChange(Activity.ClosedEvent, this); executionContext.ExecuteActivity(childActivity); } return (this.EnabledActivities.Count == 0) ? ActivityExecutionStatus.Closed : ActivityExecutionStatus.Executing; } protected override ActivityExecutionStatus Cancel(ActivityExecutionContext executionContext) { if (executionContext == null) throw new ArgumentNullException("executionContext"); bool canCloseNow = true; for (int i = 0; i < this.EnabledActivities.Count; ++i) { Activity childActivity = this.EnabledActivities[i]; if (childActivity.ExecutionStatus == ActivityExecutionStatus.Executing) { executionContext.CancelActivity(childActivity); canCloseNow = false; } else if (childActivity.ExecutionStatus == ActivityExecutionStatus.Canceling || childActivity.ExecutionStatus == ActivityExecutionStatus.Faulting) { canCloseNow = false; } } return canCloseNow ? ActivityExecutionStatus.Closed : ActivityExecutionStatus.Canceling; } protected override void OnClosed(IServiceProvider provider) { base.RemoveProperty(ParallelActivity.IsExecutingProperty); } protected override void OnActivityChangeAdd(ActivityExecutionContext executionContext, Activity addedActivity) { if (executionContext == null) throw new ArgumentNullException("executionContext"); if (addedActivity == null) throw new ArgumentNullException("addedActivity"); ParallelActivity parallel = executionContext.Activity as ParallelActivity; if (parallel.ExecutionStatus == ActivityExecutionStatus.Executing && parallel.IsExecuting) { addedActivity.RegisterForStatusChange(Activity.ClosedEvent, this); executionContext.ExecuteActivity(addedActivity); } } protected override void OnActivityChangeRemove(ActivityExecutionContext rootExecutionContext, Activity removedActivity) { } protected override void OnWorkflowChangesCompleted(ActivityExecutionContext executionContext) { base.OnWorkflowChangesCompleted(executionContext); if (this.IsExecuting) { bool canCloseNow = true; for (int i = 0; i < this.EnabledActivities.Count; ++i) { Activity childActivity = this.EnabledActivities[i]; if (childActivity.ExecutionStatus != ActivityExecutionStatus.Closed) { canCloseNow = false; break; } } if (canCloseNow) executionContext.CloseActivity(); } } #endregion #region IActivityEventListener Members void IActivityEventListener .OnEvent(object sender, ActivityExecutionStatusChangedEventArgs e) { if (sender == null) throw new ArgumentNullException("sender"); if (e == null) throw new ArgumentNullException("e"); ActivityExecutionContext context = sender as ActivityExecutionContext; if (context == null) throw new ArgumentException(SR.Error_SenderMustBeActivityExecutionContext, "sender"); ParallelActivity parallel = context.Activity as ParallelActivity; e.Activity.UnregisterForStatusChange(Activity.ClosedEvent, this); bool canCloseNow = true; for (int i = 0; i < parallel.EnabledActivities.Count; ++i) { Activity childActivity = parallel.EnabledActivities[i]; if (!(childActivity.ExecutionStatus == ActivityExecutionStatus.Initialized || childActivity.ExecutionStatus == ActivityExecutionStatus.Closed)) { canCloseNow = false; break; } } if (canCloseNow) context.CloseActivity(); } #endregion #region Runtime Specific Data //Runtime Properties static DependencyProperty IsExecutingProperty = DependencyProperty.Register("IsExecuting", typeof(bool), typeof(ParallelActivity), new PropertyMetadata(false)); private bool IsExecuting { get { return (bool)base.GetValue(IsExecutingProperty); } set { base.SetValue(IsExecutingProperty, value); } } #endregion } #region Validator internal sealed class ParallelValidator : CompositeActivityValidator { public override ValidationErrorCollection Validate(ValidationManager manager, object obj) { ValidationErrorCollection validationErrors = base.Validate(manager, obj); ParallelActivity parallel = obj as ParallelActivity; if (parallel == null) throw new ArgumentException(SR.GetString(SR.Error_UnexpectedArgumentType, typeof(ParallelActivity).FullName), "obj"); // Validate number of children if (parallel.EnabledActivities.Count < 2) validationErrors.Add(new ValidationError(SR.GetString(SR.Error_ParallelLessThanTwoChildren), ErrorNumbers.Error_ParallelLessThanTwoChildren)); bool notAllSequence = false; foreach(Activity activity in parallel.EnabledActivities) { if(activity.GetType() != typeof(SequenceActivity)) { notAllSequence = true; } } // Validate that all child activities are sequence activities. if (notAllSequence) validationErrors.Add(new ValidationError(SR.GetString(SR.Error_ParallelNotAllSequence), ErrorNumbers.Error_ParallelNotAllSequence)); return validationErrors; } } #endregion } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved.
Link Menu

This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- ClipboardProcessor.cs
- MemoryStream.cs
- WsdlBuildProvider.cs
- ListViewCommandEventArgs.cs
- EntityObject.cs
- TextTreeInsertElementUndoUnit.cs
- XsdBuildProvider.cs
- TypedTableHandler.cs
- Resources.Designer.cs
- KnownBoxes.cs
- messageonlyhwndwrapper.cs
- DynamicValidatorEventArgs.cs
- ConfigurationLocationCollection.cs
- PublishLicense.cs
- ToolboxItemAttribute.cs
- SerializationObjectManager.cs
- ScrollProperties.cs
- ListParagraph.cs
- CharacterShapingProperties.cs
- ErrorWrapper.cs
- EmptyEnumerator.cs
- ViewManagerAttribute.cs
- dsa.cs
- ConfigXmlText.cs
- RegexTypeEditor.cs
- HandlerFactoryCache.cs
- SocketPermission.cs
- followingquery.cs
- wgx_commands.cs
- _NtlmClient.cs
- SweepDirectionValidation.cs
- UserControlFileEditor.cs
- QuinticEase.cs
- ProcessHostServerConfig.cs
- SqlDependencyListener.cs
- QilPatternVisitor.cs
- COM2EnumConverter.cs
- MemoryMappedViewAccessor.cs
- CodeTypeOfExpression.cs
- ScanQueryOperator.cs
- SoapIgnoreAttribute.cs
- Inflater.cs
- Validator.cs
- Perspective.cs
- GeometryHitTestParameters.cs
- CompositeCollectionView.cs
- MessageFormatterConverter.cs
- NextPreviousPagerField.cs
- SymDocumentType.cs
- RandomDelaySendsAsyncResult.cs
- mediaclock.cs
- HelpEvent.cs
- Clock.cs
- SqlPersonalizationProvider.cs
- RadioButtonStandardAdapter.cs
- SerialStream.cs
- TreeViewItem.cs
- XamlToRtfParser.cs
- DataGridViewAutoSizeColumnsModeEventArgs.cs
- ParameterEditorUserControl.cs
- Set.cs
- ScrollEvent.cs
- CacheAxisQuery.cs
- IriParsingElement.cs
- Matrix3DConverter.cs
- MemoryRecordBuffer.cs
- BitmapPalettes.cs
- securitycriticaldata.cs
- externdll.cs
- CachedTypeface.cs
- SortKey.cs
- SiteOfOriginContainer.cs
- ContainerParagraph.cs
- ScriptManagerProxy.cs
- RoutedEventConverter.cs
- XmlBaseWriter.cs
- CapabilitiesState.cs
- KeyNotFoundException.cs
- isolationinterop.cs
- CultureTableRecord.cs
- MissingManifestResourceException.cs
- SQLBytesStorage.cs
- MenuItemCollection.cs
- LineServices.cs
- CanonicalXml.cs
- DataGridViewCellLinkedList.cs
- CodeValidator.cs
- StickyNoteAnnotations.cs
- MessageSecurityOverMsmq.cs
- CacheMemory.cs
- TableRowsCollectionEditor.cs
- ObjectSet.cs
- EndPoint.cs
- JsonReader.cs
- ButtonFieldBase.cs
- WindowAutomationPeer.cs
- Encoder.cs
- SoapAttributes.cs
- DataGridViewColumnStateChangedEventArgs.cs
- OLEDB_Util.cs