On 8/8/2011 10:33 AM, Larry Becker wrote:
It looks like there could be cooperation between the two groups on the
development of the Java interface at least.
Cooperation with GeoTools seems like a reasonable way to go.
The ogr support approach would not seem to provide any advantage
beyond translating FGDB to shapefiles as SkyJUMP uses that library for
mdb translation now. There may be Java bindings for the low level API
in OGR that I'm not aware of, but this would be a level removed from
the actual API we want to use.
Agreed. It's bad enough having to include the C libs needed for access
to non-Java APIs, but including a bunch of OGR libs as well just
compounds the problem.
Also, from a development point-of-view if there are issues that makes
two places which need to be looked at and updated - and if the problem
is in OGR then OJ is hostage to OGR's schedule.
The only way this would be any use in JUMP (IMHO) is if we could open
and edit FGDBs like ArcMap does. We discussed the idea of supporting
the Access personal geodatabase years ago, but abandoned the idea
because it was too risky because it was proprietary and had no
published API.
Disagreed. Providing Read-Only access to FGDB is still very useful,
since it provides a gateway into OJ for ESRI users. And there is lots
of functionality which is difficult to accomplish in ESRI tools which is
easy in OJ (and other Java solutions like JEQL). I'm now in the
unenviable position of working with ESRI tools on a daily basis, and by
the biggest stumbling block to trying to introduce OJ into my
environment is the inability to read the (sometimes huge) FGDBs that we use.
Another way to think of this - what better way to to suck the life out
of a proprietary format than to make a one-way gateway into an open
solution? (This is a tried-and-true ploy of proprietary platforms...)
I'm not even sure that the ESRI FGDB API supports writing.. or at least,
not without a lot of caveats.
As far as the ESRI license, it would put us in the same position as
having the end user download the MRSID executable. Not good, but doable.
On the minus side, by supporting the proprietary FGDB format, we might
be using effort that could be better applied to open source solutions.
See comment above about providing a gateway...
What are the viable open source alternatives? Spatial Lite seems to
have a C API as well.
SpatialLite support would be useful too, but I don't think it's going to
replace FGDB in the wider world anytime soon (unfortunately).
just a few thoughts,
Larry
On Mon, Aug 8, 2011 at 10:22 AM, <edgar.sol...@web.de
<mailto:edgar.sol...@web.de>> wrote:
Obviously there is interest in geotools to add a gt2 datastore for
it. Also cite:
>Justin Deoliveira: Just a note that fgdb support was recently
added to ogr as a format... so using the existing ogr datastore
(and its java bindings for ogr) could be an easier route to go.
However it requires ogr >= 1.9.0.
In any way we should (re)implement a geotools reader/writer
extension or pimp my old GT2 reader/writer to work with the latest oj.
ede
On 08.08.2011 17:07, Sunburned Surveyor wrote:
> It looks like there is some interest and opportunity for
collaboration
> with the GeoTools team on FGDB support. You can see the thread I
> started on their development mailing list here:
>
>
http://osgeo-org.1803224.n2.nabble.com/FGDB-Support-in-GeoTools-td6662165.html
>
> I'm already way over committed, so I can't take the lead on this
> effort, but I hope we can work together with the GeoTools people if
> there is a desire and resources for work on a FGDB library.
>
> Landon
>
> On Sun, Aug 7, 2011 at 10:44 AM, Sunburned Surveyor
> <sunburned.surve...@gmail.com
<mailto:sunburned.surve...@gmail.com>> wrote:
>> If we did decide to explore FGDB support for OpenJUMP, I'd
recommend
>> we collaborate with GeoTools on the lower-level code. I can
post there
>> to see if there is anything going on in this area and will get
back to
>> the list.
>>
>> Landon
>>
>> On Thu, Aug 4, 2011 at 2:25 AM, <edgar.sol...@web.de
<mailto:edgar.sol...@web.de>> wrote:
>>> Thanks for the overview on this.. ede
>>>
>>> On 04.08.2011 01:28, Martin Davis wrote:
>>>> Yes, they are definitely positioning FGDBs as the replacement
for shapefiles - at least in their world. FGDB has a lot of
advantages for them - no limit on file size, able to contain all
of the weird and wonderful ESRI data structures, and
platform-independent. Oh, and no 11-char limit on field names!!!
>>>>
>>>> <philosophy>
>>>> Personally I can't see it replacing the role that Shapefiles
play in the wider geospatial world - that is, a (fairly( open,
easily-accessible, documented spatial data format. The FGDB
format is closed and proprietary - only the API is somewhat open.
And it's written in C, which limits its use in some situations.
Also, the FGDB format is very complex, and completely tailored to
support ESRI's needs, rather than a more general set of needs.
>>>>
>>>> It would be GREAT to have a truly open geospatial format,
which was essentially a shapefile for the 21st century. GML is
NOT that format... so the field lies open
>>>> </philosophy>
>>>>
>>>> It would be great to have a solution for accessing FGDBs from
Java (OpenJUMP of course, but I'd also like to be able to read
them from JEQL). If OJ could read them that should make it quite
appealing for working with newer ESRI data.
>>>>
>>>> One possiblity is this work on a Java interface to the FGDB
API. If this project has taken care of all the JNI nastiness,
then it could be worth using.
>>>>
>>>> http://sourceforge.net/projects/jfilegdbexplore/
<http://sourceforge.net/projects/jfilegdbexplore/>
>>>>
>>>> I know that the GDAL project is working on adding a driver
for the FGDB API. This is in C, of course, so not directly usable
by OJ.
>>>>
>>>> Martin
>>>>
>>>> On 8/3/2011 8:27 AM, Larry Becker wrote:
>>>>> It would seem that ESRI is positioning the "file
geodatabase" as the heir to the shapefile. They now have a
cross-platform API that provides access without ArcObjects.
>>>>>
>>>>>
http://forums.arcgis.com/threads/31841-Welcome-to-the-discussion-forum-for-the-File-Geodatabase-API!
>>>>>
>>>>> Is this something the JUMP community should look into
supporting?
>>>>>
>>>>> Larry
>>>>>
>>>
>>>
>>>
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