On Wed, Mar 25, 2015 at 6:27 AM, <[email protected]> wrote:
> I have discussed this with Oracle at length but they are adamant that
> this is the way Standard Edition should behave and they are unwilling to do
> anything about it.
>
>
>
> Given that Oracle were not going to help I did some tracing in
> geotools/geoserver to find out what the code was doing and I found the
> advanced_projection_handling section in geotools (
> http://www.geo-solutions.it/blog/developers-corner-advanced-raster-projection-geoserver/).
> I’m not entirely sure why this is needed or what it’s actually doing but if
> enabled geotools generates these split bbox queries which cause us
> trouble. Unfortunately, this is where my understanding of what’s going on
> ends, so if anyone has any pointers to further information or a possible
> solution/workaround to this problem I would really appreciate it.
>
If you want a quick solutions and don't care about mapping around the
dateline, you can disable map wrapping by setting this on your JVM:
-DENABLE_MAP_WRAPPING=false
and if you want to disable advanced projection handling fully, you can add
this one as well:
-DENABLE_ADVANCED_PROJECTION=false
With the first you will loose the ability to wrap a map around the
dateline, google maps style, with the second
you'll loose the ability to handle common projection issues when asking a
bbox outside their validity
area, or around difficult points/lines (e..g, poles, dateline, antimeridian
to the central meridian, and so on).
But it should remove the extra bbox.
The non easy solution is to work around the limitations of the database,
split the query and do a union but...
uh... that sounds like complex/hairy work (e..g, recognize the multiple
bboxes inside a otherwise complex
query, figure out how to split it in two parts, teach the jdbc data store
to create two queries with a union
in between, but only for Oracle standard edition, and so on...)
Chees
Andrea
--
==
GeoServer Professional Services from the experts! Visit
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==
Ing. Andrea Aime
@geowolf
Technical Lead
GeoSolutions S.A.S.
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