WCF RIA Services “do Geral ao Detalhe”

WUX303

Nuno Godinho

Partner & CTO @ ITech4All

nuno.godinho@itech4all.com

@NunoGodinho

Nuno Filipe GodinhoPartner & CTO @ ITech4all

Mail: Nuno.Godinho@itech4all.comNuno.Godinho@sapo.pt

Blogs: http://pontonetpt.com/blogs/nunogodinhohttp://xamlpt.com/blogs/nunogodinhohttp://weblogs.asp.net/nunogodinhohttp://msmvps.org/blogs/nunogodinho

Twitter: @NunoGodinho

About Me

• Introduction• RIA Services • Q&A

Note: Use #techdays2010pt and #WUX303 hashtags for requests and comments about this session on TechDays Portugal 2010

Agenda

Introduction

DemoSample Line-of-Business Application without WCF RIA Services

• Common Problems• N-Tier Development• Controls• Rich Text Support• Multi-language Support• Customer Devices Interaction• Communications• Extensibility• Offline Support• Interoperability

Problem Statement

• The validation needs to run on Client and On Server as well as on Mid-Tiers

• Common validation across the tiers

• Services that may be shared with other applications

Challenges using N-Tier applications

Value Proposition

• Simplify RIA-style application development• n-tier is hard, and un-natural• Focus on data-driven apps

• Bring ASP.NET-style productivity to RIA development• Building blocks for data, security,

etc.• Focus on scenarios

Vision and Goals

• Focus on data in an end-to-end manner

• A unified story for client and server development

• A prescriptive framework that targets key scenarios, and leads the common developer to a pit of success

Value Propositions

• Simplify application development across tiers and trust boundary • Provides a set of tools to build the multiple

tiers of an application together• Application logic remains aware of tier and

trust boundaries• Uses the end-to-end flow of data and

metadata described earlier • Code generation and shared code

• Enhance the experience by providing multiple choices for sharing logic while respecting tier and trust boundaries

Value Propositions

DemoSample Line-of-Business Applicationwith WCF RIA Services

ApplicationBrowser Rich Internet Application

DB

Service

Other Applications

• Client is an extension of the server• A single logical application

Unified Story

Data Access Layer

AppLogic

Services

HTMLPresentati

onLogic

Network

A Prescriptive Pattern

Rich Internet Application

DB

Services

Data Access Layer

AppLogic

Presentation

Logic

Network

DomainCont

ext

Domain

Service

Under the covers infrastructure

• Support for multiple presentation tiers and data access technologies

Single Pattern that Scales and Grows

AppLogic

DatabasesADO.NET,ORMs (LTS, EF, …)

CLR Lists/ObjectsRepository(nHibernate, …)

ServicesREST/SOAP(Azure, …)

SOAP, XML, JSON,Binary

.NET ClientsSilverlight, WPF

Standards ClientsJavaScript

Server RenderingHTML, SEO,Printing, …

ServicesWCF

Unit Test Code

RIA Services

DemoWCF RIA Services

• Data Access• DataBinding• Validation• Extensibility

RIA Services

Interopwith other

Platforms & WS-*

ASMX & WSE

Attribute- Based

Programming

Enterprise Services

REST / HTTP Programming

HTTP Services

Message-Oriented

Programming

System.Messaging

ExtensibilityLocation

transparency

.NET Remoting

Unified Programming Model

• Windows Communication Foundation (WCF)

Architecture

Channel Model

Formats(Atom, JSON, XML,

…)

Transports(HTTP, TCP, …)

Protocols(SOAP, HTTP,

OData, …)

Service Model

Data Contract Service ContractService Behavior

Programming Model

Core Services

Web HTTP Services

Data Services

Workflow Services

RIA Service

s

Client project

WCF RIA Services - Design-time view

Server project

DomainService

Data Acces

s Layer (DAL)

Entities

Solution (Application)

ViewsDomainContex

t

EntitiesBuild,

reflect & code-gen

Silverlight

• Entity lifecycle

WCF RIA Services - Run-time view

Web server

DomainService

Data Acces

s Layer (DAL)

Application

ViewsDomain

Context

LoadQuery

Entities

Results

Submit

Entities

Submit

Results

context.Load(GetRestaurantsQuery(…).Skip(10).Take(10))

context.SubmitChanges()

GetRestaurants(…).Skip(10).Take(10)

Submit(changeSet)

• Authentication• Roles• User profile• All integrate w/ ASP.NET

infrastructure

Services Out-of-the-Box

Q & A

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