“ winfs” future directions: building data-centric applications using windows presentation...

““WinFS” Future Directions:WinFS” Future Directions: Building Data-Centric Applications Using Windows Building Data-Centric Applications Using Windows Presentation Foundation “Avalon” and Windows Presentation Foundation “Avalon” and Windows FormsForms

Ramesh NagarajanRamesh NagarajanDAT310DAT310Program ManagerProgram ManagerMicrosoft CorporationMicrosoft Corporation

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Data Access ChallengeData Access ChallengeDesktop DevelopersDesktop Developers

Building data centric applications is overly difficultBuilding data centric applications is overly difficultRequires object framework design skillsRequires object framework design skills

Requires performance and scalability tuning skillsRequires performance and scalability tuning skills

Requires UI skillsRequires UI skills

More time spent on plumbing than on app itself!More time spent on plumbing than on app itself!

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Data Access ChallengeData Access ChallengeNow imagine if…Now imagine if…

You could manipulate data as objects You could manipulate data as objects but query it as relationalbut query it as relational

Flexible query definition and compositionFlexible query definition and compositionBuild Rich Dynamic scalable UIBuild Rich Dynamic scalable UI

You could model your business data You could model your business data as objectsas objects

Share your data types with other Share your data types with other applicationsapplications

You could sync data to make it You could sync data to make it available offlineavailable offline

Provides two-way synchronizationProvides two-way synchronization

ADO.NETADO.NET

WinFSWinFS

Item Data Model

Query

Services

File Services Metadata Handlers,…

OperationsBackup, AV,…

Item Association Extension

Schemas

Tasks Media

Docs …

SyncAdapters, …

People Mail



SyncAdapters, …

Update

Logic

“DLinq”



SyncAdapters, …

Database Engine

NTFS CLR

WinFS for DevelopersWinFS for Developers

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Leveraging a rich data Leveraging a rich data platformplatformUsing the next generation ADO.NET Using the next generation ADO.NET API on WinFS to query for data and API on WinFS to query for data and build great applications, without build great applications, without building your own data storebuilding your own data store

Building shared data Building shared data applicationsapplicationsUse schemas to extend and relate Use schemas to extend and relate Windows types, build your own Windows types, build your own types, and extend with logic and types, and extend with logic and behaviorsbehaviors

33 Building smart connected Building smart connected applicationsapplicationsBuild sync adapters to bring your Build sync adapters to bring your data into WinFSdata into WinFS

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33

Simple retrievalSimple retrieval

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StorageViewStorageView

Provides feature rich access to WinFS Provides feature rich access to WinFS datadata

Data Virtualization and PagingData Virtualization and Paging

Grouping, Sorting, Filtering and Grouping, Sorting, Filtering and AggregationAggregation

NotificationsNotifications

NOT a UI control or a SQL ViewNOT a UI control or a SQL View

Implements Data Binding interfacesImplements Data Binding interfaces

BindingBinding

User User InterfaceInterface

objectobject

PropertyProperty

Data objectData object

PropertyProperty

Data binding demosData binding demos

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Sync AdaptersSync Adapters

Canonical way to synchronize data Canonical way to synchronize data with WinFSwith WinFS

Change tracking built into the storeChange tracking built into the store

Conflict detection and resolution Conflict detection and resolution

WinFS SyncAdapters

class MyAdapter : SyncAdapter class MyAdapter : SyncAdapter {{ public void Initialize(SyncProfile profile)public void Initialize(SyncProfile profile) public override void Synchronize()public override void Synchronize() public override void Cancel()public override void Cancel() private void ReceiveSync()private void ReceiveSync() private void SendSync()private void SendSync() ......}}

Inside A Sync AdapterInside A Sync AdapterReceive SyncReceive Syncusing System.Storage.Sync;

// InitializationSyncService syncService = (SyncService) winfsData.Context.GetService(typeof(SyncService));

Guid remotePartnerId = ...; syncService.Initialize(profile.LocalEndpoint.ReplicaId,

remotePartnerId);

syncService.ConflictPolicy = profile.ConflictPolicy;

// Set baseline for conflict detectionsyncService.RemoteKnowledge = LookupMetadataFromLastSync();

// Provide changes like you would for WinFS API CUD operationsPerson p = new Person();p.DisplayName = remotePerson.Name; // Schema transformation...// Applies changes: does conflict detection and handling, syncService.SaveContextChanges(); // Save updated baselineSaveMetadataForNextSync(syncService.RemoteKnowledge);

Using Sync Using Sync namespacenamespace

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InitializeInitializeSyncServiceSyncService

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Set-upSet-upConflict Policy Conflict Policy and Baselineand Baseline

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Provide andProvide andApply ChangesApply Changes

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Save UpdatedSave UpdatedBaselineBaseline

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Inside A Sync AdapterInside A Sync AdapterSend SyncSend Sync// Send Sync – Enumerating Changes// Set baseline for change enumerationsyncService.RemoteKnowledge = LookupMetadataFromLastSync();

using (ChangeReader reader = syncService.GetChangeReader()){ foreach (CompoundItemChange cic in reader) { // CompoundItemChange internally contains

// WinFS API data objects for changed Entities

switch (cic.RootItemChange.ChangeType) { case ChangeType.Create: case ChangeType.Update: case ChangeType.Delete:

...; // Schema transform WinFS change // and apply to remote store

}

// Updates change enumeration baseline reader.AcknowledgeChange(change, true /*success*/); }} // Save updated baselineSaveMetadataForNextSync(syncService.RemoteKnowledge);

Process Change Process Change and Apply Remotelyand Apply Remotely

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Get ChangeReaderGet ChangeReader

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Read ChangesRead Changes

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Report Change Report Change AppliedApplied

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Save UpdatedSave UpdatedBaselineBaseline

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Partner demo – AdessoPartner demo – Adesso

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Partner Demo - AdessoPartner Demo - AdessoAdesso ServerAdesso Server

Demo PCDemo PC

WinFSStore

SynchronizationSynchronization

Back OfficeBack OfficeDataData

StoreSpyAdesso

Designer

PocketPC PocketPC clientclient

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WinFS: Raising the WinFS: Raising the Productivity BarProductivity Bar

You CAN manipulate data as objects You CAN manipulate data as objects but query it as relationalbut query it as relational

Flexible query definition and compositionFlexible query definition and composition

Build Rich Dynamic scalable UIBuild Rich Dynamic scalable UI

You CAN model your business data as You CAN model your business data as objectsobjects

Share your data types with other Share your data types with other applicationsapplications

You CAN sync data to make it You CAN sync data to make it available offlineavailable offline

Provides two-way synchronizationProvides two-way synchronization

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Community ResourcesCommunity Resources

At PDCAt PDCFor more information, go seeFor more information, go see

DAT209 (again!): Repeated Thurs 515pmDAT209 (again!): Repeated Thurs 515pmDAT312: “WinFS” and ADO.NET: Future DAT312: “WinFS” and ADO.NET: Future Directions for Data Access Scenarios (Wed Directions for Data Access Scenarios (Wed 5pm)5pm)Labs: DAT-HOL07: Getting started with WinFSLabs: DAT-HOL07: Getting started with WinFSDAT Track loungeDAT Track loungeAsk the Experts: Thursday nightAsk the Experts: Thursday night

After PDCAfter PDCMSDN dev center: MSDN dev center: http://msdn.microsoft.com/data/winfs/http://msdn.microsoft.com/data/winfs/Channel 9 tag: Channel 9 tag: http://channel9.msdn.com/tags/WinFShttp://channel9.msdn.com/tags/WinFS Blog: Blog: http://blogs.msdn.com/winfshttp://blogs.msdn.com/winfs Newsgroup: Newsgroup: news://microsoft.public.windows.developnews://microsoft.public.windows.developer.winfx.winfser.winfx.winfs

http://msdn.microsoft.com/data/winfs/

http://channel9.msdn.com/tags/WinFS

http://blogs.msdn.com/winfs

news://microsoft.public.windows.developer.winfx.winfs/

news://microsoft.public.windows.developer.winfx.winfs/

“ winfs” future directions: building data-centric applications using windows presentation...

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