public BookmarkResumptionResult TryGenerateWorkItem(ActivityExecutor executor, bool isExternal, ref Bookmark bookmark, object value, ActivityInstance isolationInstance, out ActivityExecutionWorkItem workItem)
{
Bookmark internalBookmark = null;
BookmarkCallbackWrapper callbackWrapper = null;
if (!this.TryGetBookmarkFromInternalList(bookmark, out internalBookmark, out callbackWrapper))
{
workItem = null;
return(BookmarkResumptionResult.NotFound);
}
bookmark = internalBookmark;
if (!ActivityUtilities.IsInScope(callbackWrapper.ActivityInstance, isolationInstance))
{
workItem = null;
// We know about the bookmark, but we can't resume it yet
return(BookmarkResumptionResult.NotReady);
}
workItem = callbackWrapper.CreateWorkItem(executor, isExternal, bookmark, value);
if (!BookmarkOptionsHelper.SupportsMultipleResumes(callbackWrapper.Options))
{
// cleanup bookmark on resumption unless the user opts into multi-resume
Remove(bookmark, callbackWrapper);
}
return(BookmarkResumptionResult.Success);
}
