NYC Sprint: Day 120 Feb 2010
On a bright day in NYC, we all convened in the sunny Open Plans event room for the first day. As in last years sprint, the morning was spent in planning and discussions, and the afternoon folks began digging in.
The MapServer team talked about release plans for 6.0, and came up with an ambitious release plan. They recognize that not every item on the plan will make the final cut, but hope that most will find either funded or community effort to bring about. Among the highlights (to me):
Pluggable renderer would allow a much cleaner rendering chain, and new renderers for new formats to be more easily added. filterObj to enhance the power of MapServer querying and support OGC Filter fully (and incidentally leverage the power of databases like PostGIS more fully). Named styles to allow re-use of style objects through a map file, instead of repeating the definitions over and over.
I also talked with Steve Lime and Jim Klassen about a bug in the one-pass rendering code that is making complex WFS queries fail. We think we have a solution and Assefa is doing the final tests.
The PostGIS discussions were about our 2.0 roadmap and what the implications of various changes are. Unfortunately, most of my proposed/desired changes are predicated are a large change to the underlying data serialization, so going forward requires a good deal of bravery – I have to burn down the village in order to save it. Olivier Courtin is working on more tractable new features: a polyhedral surface, suitable for storing 3D buildings and other objects that have grown increasingly common.
David Zwarg and Jeff Adams from Avencia joined the PostGIS group, and are working hard already: David on WKTRaster and Jeff on a geographic coordinates formatting routine. Don’t tell Jeff, but if he gets the output formatter working, I’m just going to ask him to try and write an ingester.
As usual, the team had to be driven into the night bodily at the end of the day – it is hard to pry nerds from their code.
Thanks to our 2010 sprint sponsors, for keeping us well supplied with food, drinks and coffee throughout this busy week!
Postscript: At the end of the day, Olivier and I settled on an order-of-operations to move towards the new database serialization in PostGIS. Step one, remove the current places in the code where the serialization pokes up into function code and get it completely isolated underneath a serialize/deserialize layer.