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SAC-824T. OData Futures: creating the web of data. Pablo Castro Software Architect Microsoft Corporation. Agenda. OData enhancements in upcoming version Using OData from Windows 8 Roadmap. Functionality. Efficiency. Versatility. Functionality. Efficiency. Versatility.

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odata futures creating the web of data

OData Futures: creating the web of data

Pablo Castro

Software Architect

Microsoft Corporation

  • OData enhancements in upcoming version
  • Using OData from Windows 8
  • Roadmap
modeling and querying location
Modeling and Querying: Location
  • First-class types in the model
    • Point, lines, line strings, polygon types
    • General geography and geometric types
  • “Distance” queries support
    • Extensible query capabilities
  • Represented using standard formats
    • GeoJSON, GML
modeling and querying collections
Modeling and Querying: Collections
  • Before collections were top-level or associations only
  • Properties can now be collections
    • Primitives or complex types
  • New “any” and “all” operators
    • Predicates that work on collections
    • Through properties or associations
modeling and querying inheritance
Modeling and Querying: Inheritance
  • Full inheritance support
    • No more obscure fine-print
    • Enables associations in subtypes
  • Use types in segments to refer to members of subtypes
    • Applies in path and all query operators
efficiency deltas
Efficiency: Deltas
  • Incrementally refresh cached data
  • Adds “delta” link to responses
    • Server encodes what it needs there
    • Responses include new, updated and deleted entities
  • Backwards compatible
efficiency cleaner and leaner json
Efficiency: Cleaner and Leaner JSON
  • Optimize for network I/O
    • Payload size matters above all
    • Parsing time typically not a problem
  • Don’t get too weird
    • Plain JSON
  • Strategy
    • Templates for redundant information
    • Streamline compression in HTTP
modeling behavior
Modeling Behavior
  • “Actions” have a name and a link
    • Server encodes what it needs in URLs
  • Availability depends on state
    • Server drives
annotations and s emantics
Annotations and Semantics
  • Annotate any model construct
  • Annotations
    • Target
    • Term
    • Value
  • Terms can use global names
    • Shared vocabularies
  • OData protocol
    • New version draft by end of 2011
  • WCF Data Services
    • New release in Q1 2012, covering most of next OData draft
  • Refresh with next version of Visual Studio
for more information
For more information



  • email: pablo.castro@microsoft.com
  • twitter: @pmc
  • Building data-driven HTML5 Applications with WCF RIA Services
  • Your Devices + OData + Azure == Happiness
  • F# 3.0: data, services, Web, cloud, at your fingertips
  • http://odata.org
  • http://msdn.microsoft.com/odata


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© 2011 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.

The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.