Davis Ford wrote:
Jody,
Can you explain to me how the GeoAPI project fits in with:
-> uDig
-> GeoTools
-> GeoServer
It's not clear to me who's using what. I see GeoAPI interfaces
sprinkled in here and there, but it does not seem like the full API
set is being utilized in any of the projects -- although I am not
familiar with uDig -- have not dug into it yet.
I would love to just point you at the website - but that is down right now.
Here is the deal:
- GeoTools is a library of spatial goodness
- GeoServer is a standards complient WFS, a good WMS (with wonderful SLD
support), and is working on being a one stop shop for all W*S
specifications (or at least a good framework for the same)
- uDig is a standards happy GIS application
What is GeoAPI? It is the set of interfaces that allow all the above to
follow standards. More interestingly it is used by other Java Spatial
toolkits and applications. To help in this some of the OGC types review
the GeoAPI interfaces before release. GeoAPI was origionally started by
James (and Martin?) to let GeoTools work with others, now that geotools
works it is sometimes hard to care what happens with GeoAPI... I try to
care because there are some smart cookies out there that review those
interfaces (in general they have scene more QA then geotools interfaces).
Here is how these projects work together:
- when something works in GeoServer it is placed in geotools
- when something works in uDig it is placed in geotools
- when we have Something in GeoTools that is standards compliant we
bundle up the interfaces and give them to GeoAPI (some other projects do
this as well which is why GeoTools does not implement everything in GeoAPI).
- sometimes when we need to work with others we will set up the
interfaces in GeoAPI and then try and implement them in GeoTools.
The useful thing is this, occasionally GeoTools members work on deep
voodoo - ISO specifications, or prototype OGC specifications, by setting
up these ideas as interfaces it allows the open source community to give
feedback. For things like ISO specs that cost money often this ends up
being an non official channel.
Jody
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