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Connecting to Data from Windows Phone 8

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Connecting to Data from Windows Phone 8

  1. 1. Connecting to Data from Windows Phone 8 Chris Woodruff Director, Perficient Level: Intermediate to Advanced
  2. 2. Who I am? Chris Woodruff MVP, Visual C# Director at Perficient Co-host of Deep Fried Bytes Podcast @cwoodruff / cwoodruff@live.com / Skype: cwoodruff
  3. 3. You will learn: • Understand the benefits of using REST web services for your mobile apps • Have an understanding to develop solutions against OData that will give better experiences for your users • How to shape your data queries to give the best performance for your mobile apps • A glimpse into using Windows Azure Mobile Services to also get to your data in the cloud.
  4. 4. LETS TAKE A REST
  5. 5. What is REST? • REST is an architectural style for distributed hypermedia systems • REpresentational State Transfer • The term originated in 2000 by Roy Fielding for his PhD thesis • REST states that the existing protocols and principles of the web are enough to create robust Web Services – no SOAP is needed
  6. 6. What does REST consist of? REST is a very simple architecture: • Application state and functionality is divided into resources. • Every resource is uniquely addressable using a universal syntax for hypermedia links • All resources share a uniform interface for the transfer of state between a client and a resource
  7. 7. What does REST consist of? Characteristics of REST • Client–server • Stateless • Cacheable • • • • Uniform Interface Named Resources Interconnected Resource Representations Layered System Operations of REST • GET • POST • PUT • DELETE
  8. 8. Example of REST Query a Resource http://www.parts-depot.com/parts/getPart?id=00345 http://www.parts-depot.com/parts/00345 http://restbucks.com/PlaceOrder?coffee={type}&size= {size}&milk={milk}&location={location}
  9. 9. DIGGING INTO ODATA
  10. 10. Open Data Protocol (OData) • • • • • • • “RESTful” Web protocol Designed to work with data across HTTP Built on existing Web standards Uses popular formats to return data payloads to consumer Uses self-describing metadata Has multiple options to build implementation based on standard protocol Soon to be a full web standard
  11. 11. The Basics of OData Feeds, which are Collections of typed Entities OData services can expose Actions and Services OData services expose all these constructs via URIs OData service may also expose a Service Metadata Document
  12. 12. Full SQL like Query “Language” HTTP Command (Verb) GET SQL Command SELECT PUT UPDATE POST INSERT DELETE DELETE
  13. 13. What is an OData URI loo like? http://services.odata.org/OData/OData.svc _______________________________________/ | service root URI http://services.odata.org/OData/OData.svc/Category(1)/Products?$top=2&$orderby=name _______________________________________/ __________________/ _________________/ | service root URI | resource path | query options
  14. 14. OData Best Practices (Producer) • • Always design your OData feed will server-side paging if your entity collections hold large amounts of data. Looks at server-side validation of queries and data updates based on the user credentials sent through HTTP
  15. 15. Why are we excited!!
  16. 16. ODATA AND HOW TO CONSUME IT IN WINDOWS PHONE
  17. 17. DEMO Windows Phone and OData
  18. 18. OData Best Practices (Consumer) • • • Use Query Projection to only bring back the entity properties you or your app needs. Think about client-side paging even if their exists server-side paging. Design and implement a client-side data caching function in your app (unless sensitive data).
  19. 19. AZURE MOBILE SERVICES AND HOW TO CONSUME IT IN WINDOWS PHONE
  20. 20. DEMO Windows Phone and Azure Windows Services
  21. 21. The demo projects can be found at: github.com/cwoodruff/
  22. 22. Resources REST http://www.ics.uci.edu/~taylor/documents/ 2002-REST-TOIT.pdf OData http://odata.org http://odataprimer.com Azure Mobile Services http://www.windowsazure.com/enus/develop/mobile/
  23. 23. Contact Me Chris “Woody” Woodruff cwoodruff@live.com Twitter @cwoodruff Skype cwoodruff http://chriswoodruff.com http://deepfriedbytes.com

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