[mkgmap-dev] creating precompiled boundaries with Derby DB?

Mon Feb 20 05:18:32 GMT 2012

Hi,

would it be okay to change the BoundaryPreparer so that it (optionally)
stores data in a Derby DB instead of keeping everything on the heap?
http:////http://www.oracle.com/technetwork/java/javadb/overview/index.html
Java DB 

Due to the growth of the OSM data I can no longer create europe *.bnd files
with -Xmx2800m (which seems to be the max. value on my machine)
I think the current process of extracting boundary data with osmconvert and
osmfilter is already quite complex, and maybe a simple DB will help.
The idea: The BoundaryElementSaver could store the data in a DB(maybe only
the coord data). 
This would allow to create the *.bnd files with less than 1GB of memory.

Any objections against this?

Gerd

--
View this message in context: http://gis.19327.n5.nabble.com/creating-precompiled-boundaries-with-Derby-DB-tp5498179p5498179.html
Sent from the Mkgmap Development mailing list archive at Nabble.com.