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Copyright © 2013 Open Geospatial Consortium.
WFS-T. European WFS T.
United States WFS T.
6.2.2.1.3 Event Publisher
The Event Publisher is composed of two components:
GO Publisher Agent: a server-side bulk data publishing system that generates
event messages.
Event Pusher: registers with one or more event services as an event source and
pushes the messages generated to the event service brokers. Publication of Events is triggered by the insertion of a feature into the database via a
WFS-T insert transaction. The GO Publisher Agent generates a Digital NOTAM Event and transfers it to an Event pusher which forwards the message to the Event Services.
6.2.2.2 Component functionality
No new component functionality was developed for either GO Publisher WFS or the Event Publisher during OWS-9. GO Publisher WFS currently implements a large
proportion of the OGC WFS 2.0 specification and the Event Publisher continues to have sufficient functionality to connect to the IfGI and IDS Event Services.
Within OWS-9, the aim was to further evaluate the effectiveness of the basic mandatory WFS 2.0 operations and full filter encoding FE 2.0 to retrieve AIXM 5.1 data for the
various flight planning and dispatch scenarios identified.
6.2.2.3 Data available via the Components
The OWS-9 consolidated database consisted of AIXM data from the following sources: Eurocontrol EAD data North America and Europe.
Comsoft EAD data North America, Canada and Middle Europe. Comsoft Estonian Air Navigation Services EANS - Estonia data Europe.
FAA Airport Mapping Database AMDB data from OWS-8. FAA Chicago National Airspace System Resources NASR data.
Detailed Airport Mapping data for Bradley International Airport KBDL and General Mitchell International Airport KMKE airport North America.
The data was split spatially between a North America and Europe feed from the WFS. WFS also contained test events created to support the various scenarios that were inserted
into the consolidated database via the WFS-T 2.0
Copyright © 2013 Open Geospatial Consortium.
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6.2.2.4 Accomplishments
Several key accomplishments were developed for OWS-9 within the data maintenance and publication architecture developed by Snowflake:
Data was consolidated from multiple sources and published using different AIXM 5.1 extension schemas into a single authoritative database. Access to these data
was provided via the WFS 2.0 and Event Publisher. The data was split spatially into North America and Europe sources for the WFS.
The WFS-T was configured to allow events to be inserted into the database. On insertion additional processes for publication were activated via Event Publisher
and WFS.
6.2.2.5 Challenges
