[postgis-devel] ST_LineLocatePoint with empty geom raise error

[Paragon Corporation]

or Empty happy. It should be a POINT EMPTY of course :)
 
Regina

  _____  

From: postgis-devel-bounces at lists.osgeo.org
[mailto:postgis-devel-bounces at lists.osgeo.org] On Behalf Of Rémi Cura
Sent: Thursday, July 10, 2014 11:55 AM
To: Paul Ramsey
Cc: PostGIS Development Discussion
Subject: Re: [postgis-devel] ST_LineLocatePoint with empty geom raise error


Honestly I don't care that much

,already wrote protections aggainst it.


It's just that the answer to the question what is the curvabs of a point on
this non exisiting line should be it doesn't exist,

not error, I don't know how to compute this.


Anyway a good error message would help anyway ;-)

Cheers,
Rémi-C



2014-07-10 17:17 GMT+02:00 Paul Ramsey <pramsey at cleverelephant.ca>:


One can get a little null-happy sometimes. You sure? Maybe just a less
dumbass error?

-- 
Paul Ramsey
http://cleverelephant.ca 
http://postgis.net


On July 10, 2014 at 4:48:47 AM, Rémi Cura (remi.cura at gmail.com) wrote:



Hey,


I recently discovered a strange behavior :
in the function
ST_LineLocatePoint


if using empty geom,

it gives the error :
"ERROR:  getPoint2d_p: point offset out of range"


the code :
SELECT ST_LineLocatePoint(
        ST_GeomFromtext('LINESTRING EMPTY')
        ,ST_GeomFromtext('point(1 2)')
        )


In my humble opinion it should return NULL when any input is empty.
What do you think?

Cheers,
Rémi-C

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