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OWS-8 Guidelines for Retrieving AIXM 5.1 via an OGC WFS 2.0

One of the key deliverables of the OGC OWS-8 Aviation thread was an Engineering Report provide guidelines for retrieveing AIXM 5.1 via and OGC WFS 2.0 based on experiences gained in OWS-8 and previous OWS projects (OWS-6/7). The need for a guidance report for implementing and configuring an OGC Web Feature Service 2.0 (WFS 2.0) providing access to AIXM 5.1 data for retrieval and maintenance emerged from these projects.

Although these projects have successfully demonstrated that the WFS 2.0 is capable of supporting a wide range of flight planning and dispatch use case scenarios there were significant differences in how the WFS 2.0 specification was implemented by service providers, namely:
  • Inconsistent implementation of the WFS 2.0 specification:
    • Not all mandatory operations supported
    • Different sets of query parameters supported
    • Different subsets of filter expressions supported
    • Need to align geometry and temporal data types and operands as defined in the Aviation GML profile with those supported by the WFS 2.0
  • Different approaches in configuring how the data should be encoded in the response
    • Encoding individual timeslices within an AIXM feature vs encoding multiple timeslices (i.e. history) within a AIXM feature
    • Support for SNAPSHOT timeslices
    • Support for the AIXM 5 Temporality Model
The scope of this guidelines report is to provide:
  1. Overview of the OGC WFS 2.0 specification
  2. Recommendations for a minimum set of operations and behaviours that should be supported to ensure consistency across software implementations.
  3. Guidance for configuring the WFS 2.0 to retrieve AIXM 5.1 data
  4. Summary of potential improvements to WFS/FE 2.0, GML and AIXM 5.1 specifications to better support aeronautical use cases

It is envisaged that this report will provide the base upon which an Aviation WFS profile can be developed

-- DebbieWilson - 01 Jun 2011

  • WFSGuidance.pdf: Additional information for approach "Extend WFS 2.0 and/or FES 2.0 to enable the response to return a subset of timeslices within a feature". The link in the document may not be accessible to all readers.
Topic attachments
I Attachment Action Size Date Who Comment
OWS-8_Aviation_WFS_Guidance_v0.2.1.docdoc OWS-8_Aviation_WFS_Guidance_v0.2.1.doc manage 4200.5 K 01 Jun 2011 - 15:44 DebbieWilson  
OWS-8_Aviation_WFS_Guidance_v1.0.2.pdfpdf OWS-8_Aviation_WFS_Guidance_v1.0.2.pdf manage 1173.3 K 04 Nov 2011 - 11:21 DebbieWilson  
OWS-8_Aviation_WFS_Guidance_v1.02_ExampleRequests.zipzip manage 46.2 K 04 Nov 2011 - 11:22 DebbieWilson  
WFSGuidance.pdfpdf WFSGuidance.pdf manage 265.8 K 03 Jun 2011 - 07:20 TimoThomas Additional information for approach "Extend WFS 2.0 and/or FES 2.0 to enable the response to return a subset of timeslices within a feature"
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Topic revision: r3 - 04 Nov 2011, DebbieWilson

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