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ASP.NET + jQuery + Odata = Goodness. Stephen Walther Superexpert.com [email protected]. Agenda. Overview of OData /WCF Data Services Querying OData from jQuery Creating/Editing OData from jQuery Client/Server Validation Useful OData plugins. - PowerPoint PPT Presentation
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Agenda
• Overview of OData/WCF Data Services• Querying OData from jQuery• Creating/Editing OData from jQuery• Client/Server Validation• Useful OData plugins
The Open Data Protocol (OData)
Defined at Odata.org:
● Open Standard● REST = Representational State Transfer● Supports XML (Atom) and JSON ● XHR and JSONP
OData Data Sources
• Netflix• NuGet• Stack Overflow• SQL Azure• Azure Table Storage• SharePoint 2010• Windows Live
• SQL Server Reporting Services
• eBay
WCF Data Services
• Exposes data using the OData protocol
• WCF Data Services February 2011 CTP2● Works with Entity Framework 4.1 (Code First)
WCF Data Services
Exposes DBContext:
Querying OData
OData URIs have three parts:● Service Root● Resource Path● Query Options
Querying OData
Query Options:● $select● $filter● $top● $skip● $orderby● $inlinecount● $count
• $expand• $format• $links• $metadata• $value
Query OData (Operators)
Query OData (String Filters)
Query OData (Date Filters)
Query OData (Math Filters)
Query OData (Type Filters)
Query OData
__metadata:
Query OData with jQuery
Create New Entities
Edit Existing Entities
Validation
Client = Use jQuery ValidateUse for immediate user feedback
Server = Use Entity FrameworkUse for domain validation
Client ValidationUse jQuery Validate to create client validation rules
Server ValidationUse Data Annotation validators to validate properties:
Server ValidationUse the IValidatableObject interface for more complex validation:
Server ValidationHandle the Entity Framework DbEntityValidationException in your service class:
jQuery OData Plugin
• Created by Egil Hansen: ● https://github.com/egil/jquery.odata
• Updated fork at:● https://github.com/StephenWalther/jquery.odata
DataJS Plugin
• Created by Microsoft:● http://datajs.codeplex.com/
• Supports reading and updating data
• Supports HTML5 DOM Storage
Resources
● WCF Data Services March 2011 CTP2• http://
www.microsoft.com/downloads/en/details.aspx?FamilyID=60fb0117-8cea-4359-b392-6b04cdc821be
● Entity Framework 4.1 (Included with MVC3)• http://www.microsoft.com/downloads/en/details.aspx?FamilyID=2dc5ddac-5a96-48b
2-878d-b9f49d87569a● jQuery Templates
• Install-Package jQuery.Templates● jQuery UI (Included with MVC3)
• Install-Package jQuery.UI● jQuery Odata
• https://github.com/egil/jquery.odata/wiki• https://github.com/StephenWalther/jquery.odata
● DataJS• http://datajs.codeplex.com/
Download the Sample Code
Visit Stephen Walther’s blog to download the sample code for this talk:
● http://StephenWalther.com
Website: http://Superexpert.com Email: [email protected]: 800 691 - 7140
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