InternalCompensate.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / cdf / src / NetFx40 / System.Activities / System / Activities / Statements / InternalCompensate.cs / 1305376 / InternalCompensate.cs
                        

                        
                            //---------------------------------------------------------------- 
// Copyright (c) Microsoft Corporation.  All rights reserved.
//---------------------------------------------------------------
namespace System.Activities.Statements
{ 
    using System;
    using System.Collections.ObjectModel; 
    using System.Collections.Generic; 
    using System.Runtime;
 
    sealed class InternalCompensate : NativeActivity
    {
        public InternalCompensate()
            : base() 
        {
        } 
 
        public InArgument Target
        { 
            get;
            set;
        }
 
        protected override bool CanInduceIdle
        { 
            get 
            {
                return true; 
            }
        }

        protected override void CacheMetadata(NativeActivityMetadata metadata) 
        {
            RuntimeArgument targetArgument = new RuntimeArgument("Target", typeof(CompensationToken), ArgumentDirection.In); 
            metadata.Bind(this.Target, targetArgument); 
            metadata.SetArgumentsCollection(new Collection { targetArgument });
        } 

        protected override void Execute(NativeActivityContext context)
        {
            CompensationExtension compensationExtension = context.GetExtension(); 
            Fx.Assert(compensationExtension != null, "CompensationExtension must be valid");
 
            CompensationToken compensationToken = Target.Get(context); 
            Fx.Assert(compensationToken != null, "CompensationToken must be valid");
 
            // The compensationToken should be a valid one at this point. Ensure its validated in Compensate activity.
            CompensationTokenData tokenData = compensationExtension.Get(compensationToken.CompensationId);
            Fx.Assert(tokenData != null, "The compensationToken should be a valid one at this point. Ensure its validated in Compensate activity.");
 
            Fx.Assert(tokenData.BookmarkTable[CompensationBookmarkName.Compensated] == null, "Bookmark should not be already initialized in the bookmark table.");
            tokenData.BookmarkTable[CompensationBookmarkName.Compensated] = context.CreateBookmark(new BookmarkCallback(OnCompensated)); 
 
            tokenData.CompensationState = CompensationState.Compensating;
            compensationExtension.NotifyMessage(context, tokenData.CompensationId, CompensationBookmarkName.OnCompensation); 
        }

        // Successfully received Compensated response.
        void OnCompensated(NativeActivityContext context, Bookmark bookmark, object value) 
        {
            CompensationExtension compensationExtension = context.GetExtension(); 
            Fx.Assert(compensationExtension != null, "CompensationExtension must be valid"); 

            CompensationToken compensationToken = Target.Get(context); 
            Fx.Assert(compensationToken != null, "CompensationToken must be valid");

            CompensationTokenData tokenData = compensationExtension.Get(compensationToken.CompensationId);
            Fx.Assert(tokenData != null, "The compensationToken should be a valid one at this point. Ensure its validated in Compensate activity."); 

            tokenData.CompensationState = CompensationState.Compensated; 
            if(TD.CompensationStateIsEnabled()) 
            {
                TD.CompensationState(tokenData.DisplayName, tokenData.CompensationState.ToString()); 
            }

            // Remove the token from the parent!
            if (tokenData.ParentCompensationId != CompensationToken.RootCompensationId) 
            {
                CompensationTokenData parentToken = compensationExtension.Get(tokenData.ParentCompensationId); 
                Fx.Assert(parentToken != null, "parentToken must be valid"); 

                parentToken.ExecutionTracker.Remove(tokenData); 
            }
            else
            {
                // remove from workflow root... 
                CompensationTokenData parentToken = compensationExtension.Get(CompensationToken.RootCompensationId);
                Fx.Assert(parentToken != null, "parentToken must be valid"); 
 
                parentToken.ExecutionTracker.Remove(tokenData);
            } 

            tokenData.RemoveBookmark(context, CompensationBookmarkName.Compensated);

            // Remove the token from the extension... 
            compensationExtension.Remove(compensationToken.CompensationId);
        } 
 
        protected override void Cancel(NativeActivityContext context)
        { 
            // Suppress Cancel
        }
    }
} 


// File provided for Reference Use Only by Microsoft Corporation (c) 2007.

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