ActivityExecutorOperation.cs source code in C# .NET

                        Code:
                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / cdf / src / WF / Common / AuthoringOM / ActivityExecutorOperation.cs / 1305376 / ActivityExecutorOperation.cs
                        
                        
                            namespace System.Workflow.ComponentModel 
{
    using System;
    using System.Diagnostics;
    using System.Globalization; 
    using System.Collections.Generic;
 
    [Serializable] 
    internal abstract class SchedulableItem
    { 
        private int contextId = -1;
        string activityId = null;
        protected SchedulableItem(int contextId, string activityId)
        { 
            this.contextId = contextId;
            this.activityId = activityId; 
        } 

        public int ContextId 
        {
            get
            {
                return this.contextId; 
            }
        } 
 
        public string ActivityId
        { 
            get
            {
                return this.activityId;
            } 
        }
 
        public abstract bool Run(IWorkflowCoreRuntime workflowCoreRuntime); 
    }
 
    internal enum ActivityOperationType : byte
    {
        Execute = 0,
        Cancel = 1, 
        Compensate = 2,
        HandleFault = 3 
    } 

    [Serializable] 
    internal sealed class ActivityExecutorOperation : SchedulableItem
    {
        private string activityName;
        private ActivityOperationType operation; 
        private Exception exceptionToDeliver;
 
        public ActivityExecutorOperation(Activity activity, ActivityOperationType opt, int contextId) 
            : base(contextId, activity.QualifiedName)
        { 
            this.activityName = activity.QualifiedName;
            this.operation = opt;
        }
        public ActivityExecutorOperation(Activity activity, ActivityOperationType opt, int contextId, Exception e) 
            : this(activity, opt, contextId)
        { 
            this.exceptionToDeliver = e; 
        }
        public override bool Run(IWorkflowCoreRuntime workflowCoreRuntime) 
        {
            // get state reader
            Activity contextActivity = workflowCoreRuntime.GetContextActivityForId(this.ContextId);
            Activity activity = contextActivity.GetActivityByName(this.activityName); 

            using (workflowCoreRuntime.SetCurrentActivity(activity)) 
            { 
                using (ActivityExecutionContext activityExecutionContext = new ActivityExecutionContext(activity))
                { 
                    ActivityExecutor activityExecutor = ActivityExecutors.GetActivityExecutor(activity);
                    switch (this.operation)
                    {
                        case ActivityOperationType.Execute: 
                            if (activity.ExecutionStatus == ActivityExecutionStatus.Executing)
                            { 
                                try 
                                {
 				                    workflowCoreRuntime.RaiseActivityExecuting(activity); 

                                    ActivityExecutionStatus newStatus = activityExecutor.Execute(activity, activityExecutionContext);
                                    if (newStatus == ActivityExecutionStatus.Closed)
                                        activityExecutionContext.CloseActivity(); 
                                    else if (newStatus != ActivityExecutionStatus.Executing)
                                        throw new InvalidOperationException(SR.GetString(SR.InvalidExecutionStatus, activity.QualifiedName, newStatus.ToString(), ActivityExecutionStatus.Executing.ToString())); 
                                } 
                                catch (Exception e)
                                { 
                                    System.Workflow.Runtime.WorkflowTrace.Runtime.TraceEvent(TraceEventType.Error, 1, "Execute of Activity {0} threw {1}", activity.QualifiedName, e.ToString());
                                    throw;
                                }
                            } 
                            break;
                        case ActivityOperationType.Cancel: 
                            if (activity.ExecutionStatus == ActivityExecutionStatus.Canceling) 
                            {
                                try 
                                {
                                    ActivityExecutionStatus newStatus = activityExecutor.Cancel(activity, activityExecutionContext);
                                    if (newStatus == ActivityExecutionStatus.Closed)
                                        activityExecutionContext.CloseActivity(); 
                                    else if (newStatus != ActivityExecutionStatus.Canceling)
                                        throw new InvalidOperationException(SR.GetString(SR.InvalidExecutionStatus, activity.QualifiedName, newStatus.ToString(), ActivityExecutionStatus.Canceling.ToString())); 
 
                                }
                                catch (Exception e) 
                                {
                                    System.Workflow.Runtime.WorkflowTrace.Runtime.TraceEvent(TraceEventType.Error, 1, "Cancel of Activity {0} threw {1}", activity.QualifiedName, e.ToString());
                                    throw;
                                } 
                            }
                            break; 
                        case ActivityOperationType.Compensate: 
                            if (activity.ExecutionStatus == ActivityExecutionStatus.Compensating)
                            { 
                                try
                                {
                                    ActivityExecutionStatus newStatus = activityExecutor.Compensate(activity, activityExecutionContext);
                                    if (newStatus == ActivityExecutionStatus.Closed) 
                                        activityExecutionContext.CloseActivity();
                                    else if (newStatus != ActivityExecutionStatus.Compensating) 
                                        throw new InvalidOperationException(SR.GetString(SR.InvalidExecutionStatus, activity.QualifiedName, newStatus.ToString(), ActivityExecutionStatus.Compensating.ToString())); 
                                }
                                catch (Exception e) 
                                {
                                    System.Workflow.Runtime.WorkflowTrace.Runtime.TraceEvent(TraceEventType.Error, 1, "Compensate of Activity {0} threw {1}", activity.QualifiedName, e.ToString());
                                    throw;
                                } 
                            }
                            break; 
                        case ActivityOperationType.HandleFault: 
                            if (activity.ExecutionStatus == ActivityExecutionStatus.Faulting)
                            { 
                                try
                                {
                                    ActivityExecutionStatus newStatus = activityExecutor.HandleFault(activity, activityExecutionContext, this.exceptionToDeliver);
                                    if (newStatus == ActivityExecutionStatus.Closed) 
                                        activityExecutionContext.CloseActivity();
                                    else if (newStatus != ActivityExecutionStatus.Faulting) 
                                        throw new InvalidOperationException(SR.GetString(SR.InvalidExecutionStatus, activity.QualifiedName, newStatus.ToString(), ActivityExecutionStatus.Faulting.ToString())); 
                                }
                                catch (Exception e) 
                                {
                                    System.Workflow.Runtime.WorkflowTrace.Runtime.TraceEvent(TraceEventType.Error, 1, "Compensate of Activity {0} threw {1}", activity.QualifiedName, e.ToString());
                                    throw;
                                } 
                            }
                            break; 
                    } 
                }
            } 
            return true;
        }
        public override string ToString()
        { 
            return "ActivityOperation(" + "(" + this.ContextId.ToString(CultureInfo.CurrentCulture) + ")" + this.activityName + ", " + ActivityOperationToString(this.operation) + ")";
        } 
        private string ActivityOperationToString(ActivityOperationType operationType) 
        {
            string retVal = string.Empty; 
            switch (operationType)
            {
                case ActivityOperationType.Execute:
                    retVal = "Execute"; 
                    break;
                case ActivityOperationType.Cancel: 
                    retVal = "Cancel"; 
                    break;
                case ActivityOperationType.HandleFault: 
                    retVal = "HandleFault";
                    break;
                case ActivityOperationType.Compensate:
                    retVal = "Compensate"; 
                    break;
            } 
            return retVal; 
        }
    } 
}

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.
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ActivityExecutorOperation.cs source code in C# .NET

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