To OData or Not to OData Chris Eargle kodefuguru.com

What kind of apps do you build?

Monolithic Application I do everything Database

Separation of Concerns Model View Controller MVC is just one example.

Layered Application Workflow Component Entity Business Layer DAL Component Gateway Data Access Layer Controller View Model Presentation Layer Crosscutting Concerns

Enterprise Applications DB Workflow Service Data Service Business Service WPF App Console App Web App Public Service

Enterprise Ecosystem

Service-Oriented Architecture Standardized Contract Loose Coupling Abstraction Reusability Autonomy Statelessness Discoverability Composability

Two Primary Styles RPC Remote Procedure Call REST Representational State Transfer

What is REST?

REST Architectural Style Stateless Not True!!! Resources

Resource-Oriented Architecture Expose many URIs One for each resource No cookies representing IDs Aggregate Resources are represented with a URI URI should facilitate “cut & paste”

What is OData?

OData Open Data Protocol REST-based content-type AtomPub JSON XML

Relational Data Resources

OData Providers WCF Data Services WCF RIA Services SharePoint 2010 SharePoint 2010

Enterprise Infrastructure Applications Services Resources OData

Resource-Oriented Infrastructure Services ResourcesOrchestration Applications

Potential Services Workflow Component Entity Business Layer DAL Component Gateway Data Access Layer Controller View Model Presentation Layer Crosscutting Concerns

AN ODATA SERVICE DEMO

Should We Use OData?

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