WCF Data Services - Office Business Application & iPhone

WCF Data Services for OBA & Mobile Development UPI, March 13, 2010 Andri Yadi | a@dycode.com CEO, DyCode | Microsoft MVP http://geeks.netindonesia.net/blogs/andriyadi

Cloud Computing

SOAP/WS-*?

SOAP arguably are: • Complex • Slow • Heavyweight • Tied to development tools and libraries • Not supported universally • Cross-vendor/platform interoperability NOT perfect

REST? REpresentational State Transfer

!= Protocol REST != Standard != Format

REST == Architectural Style for connecting distributed applications

REST • Server-side resources identified by URI • Access resources over HTTP: POST Create INSERT GET Retrieve SELECT PUT Update UPDATE DELETE Delete DELETE • Returned data is “plain”: Atom, plain-XML or JSON

URL Resources VERB (GET, POST, PUT, DELETE) Resource 1 Client Representation Resource 2 XML JSON Server Status Representation XML JSON

OData Open Data Protocol = REST + AtomPub + Modeling + URI Semantics An open web protocol for querying and updating data, applies web technologies such as HTTP, Atom Publishing Protocol (AtomPub) and JSON to provide access to information from varying sources

Data Services Client HTTP (Open Data Protocol) WCF Data Services Windows Azure SQL Server 2008 Table Storage Reporting Services

WCF Data Services

WCF Data == Astoria Services == ADO.NET Data Services

WCF Data Services A RESTFul implementation for data-centric services

HTTP Open Data Protocol (OData) Hosting/HTTP Listener Data Services Runtime Data Access Layer Entity Custom LINQ Framework Provider Relational Other Database Sources

HTTP http://localhost:1234/MyData.svc/MyEntities(10) Hosting/HTTP Listener Data Services Runtime var q = from e in MyEntities where id = 10 select e; Data Access Layer Entity Framework SELECT * FROM MyEntity WHERE id = 10 SQL Server

Data Services Client HTTP (Open Data Protocol) WCF Data Services

Resources • OData web site: http://odata.org • Astoria team blog: http://blogs.msdn.com/ astoriateam • MSDN: http://msdn.microsoft.com/data • Visualizer: In Visual Studio 2010 Tools > Extension Manager > Search > “open data protocol” • iPhone developer portal: http://developer.apple.com/iphone

DyCode www.dycode.com | ofﬁce@dycode.com Dynamic IT Solutions for Optimal Business Value

WCF Data Services - Office Business Application & iPhone

by Andri Yadi

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