OData – Super Cola W3
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The document summarizes a presentation about the OData protocol given by Jorge Gonçalves and Manuel Costa. OData provides a standardized way to expose and consume data via RESTful web services. It allows data from various sources to be unlocked and queried using HTTP, JSON, and other web technologies. The presentation covered the basics of OData, how to create and consume OData services using .NET, and various OData client options for JavaScript, Excel, and LightSwitch. Questions from attendees were invited at the end.
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OData – Super Cola W3
- 1. 34ª Reunião Lisboa - 08/12/2012 http://netponto.org OData – A Super Cola W3! Jorge Gonçalves & Manuel Costa
- 2. Jorge Gonçalves Formador responsável .NET na Rumos SA Fundador da Consultora SimpleFactor Administrador de Sistemas na DGITA Analista Programador (Altitude Software, BES, BCP, ...) Manuel Costa Consultor .NET na PT Sistemas de Informação S.A. na área do Portal Web de Vendas da PT. Co-fundador da Factor Digital Informática em 2000, onde desenvolveu sobre plataformas web para a Microsoft, a TMN, a Priberam, os Hotéis Dom Pedro, a Nestlé… Sempre em .NET
- 3. Agenda: OData – The Web “Glue”! • The What’s and Why’s • CRUD: “REST in peace” • Writing OData Services With .NET • OData Clients
- 4. What is OData • “The Open Data Protocol (OData) is a Web protocol for querying and updating data that provides a way to unlock your data and free it from silos that exist in applications today.” www.odata.org • “OData does this by applying and building upon Web technologies such as HTTP, Atom Publishing Protocol (AtomPub) and JSON to provide access to information from a variety of applications, services, and stores.” www.odata.org
- 5. Why use the Open Data Protocol? • “Provides a uniform way to expose, structure, query and manipulate data using REST practices and JSON or ATOM syntax to describe the payload. OData also provides a uniform way to represent metadata about the data, allowing computers to know more about the type system, relationships and structure of the data.” www.odata.org
- 7. OData - REST “in Peace” • URI Conventions http://services.odata.org/OData/OData.svc/$metadata • System Query Options http://services.odata.org/OData/OData.svc/Products ?$skip=2&$top=2&$orderby=Rating&$filter=Price le 200 and Price gt 3.5 &$select=Price,Name &$inlinecount=allpages &$format=json http://services.odata.org/OData/OData.svc/GetProductsByRating?rating=5
- 8. URI Conventions using IE 10 + Chrome LinkPad Fiddler
- 9. Writing OData Services using .NET • Web Application / Web Site – Add New Item -> WCF Data Service... • Create Class derived from DataService – Reflection Provider – Entity Framework Provider • Configure Entitity/Operation access • Add custom operations • Interceptors
- 10. Writing OData Service using .net - IQueryable - EF (Northwind DB)
- 11. OData Clients: .Net • Project -> Add Service Reference... • Security / Authentication [1]
- 12. Consuming OData Service using .net
- 13. OData Clients: Javascript • Javascript – JSON • V3: Accept: application/json;odata=verbose • DataJS • JayData • KendoUI • XSS Issues (JSONP Support!)
- 14. Consumint OData Service using Javascript
- 17. Useful Tools • Fiddler http://www.fiddler2.com/fiddler2/ • Tcptrace http://www.pocketsoap.com/tcptrace/ • LinqPad www.linqpad.net
- 18. www.odata.org
- 19. Questões?
- 20. Referências • Open Data Protocol (What’s and Why’s) – http://www.odata.org • OData - REST “in Peace” – http://www.odata.org/documentation/uri-conventions – http://www.linqpad.net – http://www.fiddler2.com • Writing/Consuming OData Services – MSDN “Open Data Protocol by Example” • http://msdn.microsoft.com/en-us/library/ff478141.aspx – CodeProject “OData Services” • http://www.codeproject.com/Articles/393623/OData-Services – Authenticating with ADO.NET Data Services • http://mtaulty.com/CommunityServer/blogs/mike_taultys_blog/archive/2008/05/27/10447.aspx
- 21. Patrocinador “GOLD” Twitter: @PTMicrosoft http://www.microsoft.com/portugal
- 24. Questões?
- 25. Próximas reuniões presenciais • 08/12/2012 – Dezembro (Lisboa) • 26/01/2013 – Janeiro (Lisboa) 23/02/2013 – Fevereiro (Lisboa) 16/03/2013 – Março (Lisboa) Reserva estes dias na agenda! :)
Notas del editor
- http://www.odata.org/introduction
- http://www.odata.org/introduction
- http://www.odata.org/documentation/uri-conventionsArticle: Open Data Protocol by Examplehttp://msdn.microsoft.com/en-us/library/ff478141.aspx
- http://services.odata.org/Northwind/Northwind.svc/@ http://www.odata.org/ecosystem#sampleservices
- http://www.odata.org/developers/articleshttp://www.linqpad.net/
- Examples:http://msdn.microsoft.com/en-us/library/ff478141.aspxhttp://www.codeproject.com/Articles/393623/OData-Services#ImplementInstalling the Northwind Sample Databasehttp://msdn.microsoft.com/en-us/library/vstudio/ff851969.aspxNorthwind database that can be downloaded as an executable sql script ( 285 Kb only ) or as a backup that can be restored with sample data currently works with Sql Server 2005 and Sql Server 2008http://northwinddatabase.codeplex.com/
- http://www.odata.org/developers/articleshttp://www.codeproject.com/Articles/393623/OData-Serviceshttp://blogs.msdn.com/b/alexj/archive/2012/08/15/odata-support-in-asp-net-web-api.aspx[1]Authenticating with ADO.NET Data Serviceshttp://mtaulty.com/CommunityServer/blogs/mike_taultys_blog/archive/2008/05/27/10447.aspx
- Examples:http://msdn.microsoft.com/en-us/library/ff478141.aspxhttp://www.codeproject.com/Articles/393623/OData-Services#ImplementInstalling the Northwind Sample Databasehttp://msdn.microsoft.com/en-us/library/vstudio/ff851969.aspxNorthwind database that can be downloaded as an executable sql script ( 285 Kb only ) or as a backup that can be restored with sample data currently works with Sql Server 2005 and Sql Server 2008http://northwinddatabase.codeplex.com/
- [JSONPSupportBehavior]JSONP and URL-controlled format support for ADO.NET Data Services http://archive.msdn.microsoft.com/DataServicesJSONPCreate and Consume JSON-Formatted Odatahttp://msdn.microsoft.com/en-us/magazine/jj190799.aspxBREAKING CHANGE: V3: Accept: application/json;odata=verbose
- http://www.odata.org/developers/articleshttp://www.codeproject.com/Articles/393623/OData-Serviceshttp://blogs.msdn.com/b/alexj/archive/2012/08/15/odata-support-in-asp-net-web-api.aspx
- http://www.odata.org/developers/articleshttp://www.codeproject.com/Articles/393623/OData-Serviceshttp://blogs.msdn.com/b/alexj/archive/2012/08/15/odata-support-in-asp-net-web-api.aspx