Some background...
I've build a MapServer/PostGIS Java app and am using OpenJump for
editing. My Java code changes attribues, but OpenJump handles any geos
changes.
I was hoping to use the PostGIS OJ plugin directly, but I'm unable to
get any writes to the DB to happen without errors. So, I'm relegated to
editing SHP files in OpenJump and have to develop some strategy to
manage population of changes into the PostGIS repository.
I think I'll use the GID values that go along with any new PostGIS row
and copy them to an attribute in the SHP files. I'll then need to build
some simple add/update/delete logic into transfers between OpenJump and
PostGIS (and make it multi-user).
Ideas appreciated and thanks for confirming my findings.
Stefan Steiniger wrote:
Martin is right, also ArcGIS creates own "dynamic" FIDs
Martin Davis wrote:
That's correct. FIDs are intended for internal JUMP use only. If
you need unique IDs, you need to define your own strategy for
creating and maintaining them. (This situation is not unique to JUMP
- in my experience you should pretty much never rely on an arbitrary
piece of software to define unique IDs for you - you just don't have
enough control and guarantee over their behaviour).
Kurt Heston wrote:
Nevermind.
I should have read the code in OJ before I tried this. It appears
FIDs are newly assigned each time a shapefile is opened, pretty
useless when trying to tie systems together with a unique ID.
Kurt Heston wrote:
In looking at the instructions at:
http://openjump.org/wiki/show/Working+with+GML
This line in the example GML template seems to infer the FID will
be output:
<property name="FID"><%=COLUMN fid%></property>
But I get "Unrecognized attribute name: FID" when I try it.
Anybody gotten this to work?
Kurt Heston wrote:
I'm using shp2pgsql to convert my OpenJump data to PostGis. It
ignores the FID column. Is there a good way I can convert my SHP
files to PostGis and retain the FIDs?
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