Výstavní 230/24, 149 00 Praha 4, mail@baud.cz, www.baud.cz

RAPID RIA DEVELOPMENT

USING .NET TECHNOLOGIES

Augustin Šulc

Petr Hošek

GOALS

Outline> Preliminary

> Architecture

> Data Source

> Web Server

> Client

> Rapid Development

Demo ApplicationProject-management tool

PRELIMINARY

Rich Internet ApplicationDesktop-like web application

Compared to Web Applications> Richer user interface

> Reduced communication

> Better development support

> Need for browser plugin

Compared to Desktop Applications> Easier deployment

> No need for installation

> Worse system integration

> No direct communication

Available RIA Platforms> Adobe Flash, Flex and AIR

> Microsoft Silverlight

> Oracle Java Applets/JavaFX

> HTML(5) + JavaScript

Microsoft Silverlight.NET Framework & WPF subset

Microsoft SilverlightInteractive UX

ARCHITECTURE

Common ArchitectureThree-Layered Services Architecture

Application LayersSeparation of concerns, high cohesion & loose coupling

DATA SOURCE

Data StoreConventional relational database

WEB SERVER

Domain ModelAbstracting relational schema

Domain Model> ADO.NET Entity Framework

> LINQ to SQL

> Nhibernate, etc.

Application Service LayerExposing domain functionality

Application Service Layer> WCF web services

> WCF Data Services

> WCF RIA Services

WCF Web ServicesExposes functionality via operations

WCF Data ServicesExposes data via context

Data Services over Web Services> Batching and transactions

> Automatic change tracking

> Limited client LINQ

WCF RIA ServicesExposes domain via context

RIA Services over Data Services> Metadata propagation

> Localization and validation

> Full client LINQ

CLIENT

Model and ResourcesDelivered via service contract

Presentation LayerSeparation of UX from business logic

Model-View-ViewModel patternViewModel as mediator for View and Model

MVVM Implementations> Prism 4

> Caliburn

> MVVM Light Toolkit, etc.

Prism 4Guidance for Silverlight applications

CaliburnPowerfull client framework for Silverlight

Caliburn over Prism 4> Convention over configuration

> Focus on real cases

> Out-of-the-box functionality

Caliburn.Micro90%of Caliburn in 10% of code

RAPID DEVELOPMENT

Development Tools.NET Framework, Visual Studio, Expression Blend, etc.

Frameworks & LibrariesWCF RIA Services, Caliburn, MEF, etc.

Even More Rapid!Model-driven code generation

T4Template-based text generation framework

T4RIATemplate for WCF RIA Services

T4RIAGenerating services, metadata and localization

Summary> Web & desktop applications alternative

> Three layered service architecture

> Model-View-ViewModel

> Rapid development

RIA DevelopmentEasy on .NET platform and fast with T4RIA

Questions

“Real-life application“Card management system developed as RIA

Statistics> 3.5 developers, 3 months

> 130k SLOC (47k generated)

> 110+ tables, 4M+ entries

> 50+ form screens

> 30+ users