public abstract bool Execute(ActivityExecutor executor, BookmarkManager bookmarkManager);
public override bool Execute(ActivityExecutor executor, BookmarkManager bookmarkManager) { Fx.Assert("Empty work items should never been executed."); return(true); }
public BookmarkResumptionResult TryGenerateWorkItem(ActivityExecutor executor, ref Bookmark bookmark, BookmarkScope scope, object value, ActivityInstance isolationInstance, bool nonScopedBookmarksExist, out ActivityExecutionWorkItem workItem) { Fx.Assert(scope != null, "We should never have a null sub instance."); BookmarkManager manager = null; workItem = null; BookmarkScope lookupScope = scope; if (scope.IsDefault) { lookupScope = _defaultScope; } // We don't really care about the return value since we'll // use null to know we should check uninitialized sub instances _bookmarkManagers.TryGetValue(lookupScope, out manager); if (manager == null) { Fx.Assert(lookupScope != null, "The sub instance should not be default if we are here."); BookmarkResumptionResult finalResult = BookmarkResumptionResult.NotFound; // Check the uninitialized sub instances for a matching bookmark if (_uninitializedScopes != null) { for (int i = 0; i < _uninitializedScopes.Count; i++) { BookmarkScope uninitializedScope = _uninitializedScopes[i]; Fx.Assert(_bookmarkManagers.ContainsKey(uninitializedScope), "We must always have the uninitialized sub instances."); Bookmark internalBookmark; BookmarkCallbackWrapper callbackWrapper; BookmarkResumptionResult resumptionResult; if (!_bookmarkManagers[uninitializedScope].TryGetBookmarkFromInternalList(bookmark, out internalBookmark, out callbackWrapper)) { resumptionResult = BookmarkResumptionResult.NotFound; } else if (IsExclusiveScopeUnstable(internalBookmark)) { resumptionResult = BookmarkResumptionResult.NotReady; } else { resumptionResult = _bookmarkManagers[uninitializedScope].TryGenerateWorkItem(executor, true, ref bookmark, value, isolationInstance, out workItem); } if (resumptionResult == BookmarkResumptionResult.Success) { // We are using InitializeBookmarkScopeWithoutKeyAssociation because we know this is a new uninitialized scope and // the key we would associate is already associated. And if we did the association here, the subsequent call to // FlushBookmarkScopeKeys would try to flush it out, but it won't have the transaction correct so will hang waiting for // the transaction that has the PersistenceContext locked to complete. But it won't complete successfully until // we finish processing here. InitializeBookmarkScopeWithoutKeyAssociation(uninitializedScope, scope.Id); // We've found what we were looking for return(BookmarkResumptionResult.Success); } else if (resumptionResult == BookmarkResumptionResult.NotReady) { // This uninitialized sub-instance has a matching bookmark but // it can't currently be resumed. We won't return BookmarkNotFound // because of this. finalResult = BookmarkResumptionResult.NotReady; } else { if (finalResult == BookmarkResumptionResult.NotFound) { // If we still are planning on returning failure then // we'll incur the cost of seeing if this scope is // stable or not. if (!IsStable(uninitializedScope, nonScopedBookmarksExist)) { // There exists an uninitialized scope which is unstable. // At the very least this means we'll return NotReady since // this uninitialized scope might eventually contain this // bookmark. finalResult = BookmarkResumptionResult.NotReady; } } } } } return(finalResult); } else { Bookmark bookmarkFromList; BookmarkCallbackWrapper callbackWrapper; BookmarkResumptionResult resumptionResult; if (!manager.TryGetBookmarkFromInternalList(bookmark, out bookmarkFromList, out callbackWrapper)) { resumptionResult = BookmarkResumptionResult.NotFound; } else { if (IsExclusiveScopeUnstable(bookmarkFromList)) { resumptionResult = BookmarkResumptionResult.NotReady; } else { resumptionResult = manager.TryGenerateWorkItem(executor, true, ref bookmark, value, isolationInstance, out workItem); } } if (resumptionResult == BookmarkResumptionResult.NotFound) { if (!IsStable(lookupScope, nonScopedBookmarksExist)) { resumptionResult = BookmarkResumptionResult.NotReady; } } return(resumptionResult); } }
public override bool Execute(ActivityExecutor executor, BookmarkManager bookmarkManager) { this.location.TemporaryResolutionEnvironment.CollapseTemporaryResolutionLocation(this.location); return(true); }