[mapserver-users] GetFeatureInfo using MySQL join - additional info about segmentation fault

Dejan Gambin dejan.gambin at coin.hr
Wed Sep 14 04:05:55 PDT 2011 

I tried debugging with gdb but only get this:

Program received signal SIGTRAP, Trace/breakpoint trap.
0x00007f8b8d76c8b7 in ?? () from /lib64/ld-linux-x86-64.so.2

and with backtrace (bt):

#0  0x00007f8b8d76c8b7 in ?? () from /lib64/ld-linux-x86-64.so.2
#1  0x00007f8b8d75b1bc in ?? () from /lib64/ld-linux-x86-64.so.2
#2  0x00007f8b8d76bb35 in ?? () from /lib64/ld-linux-x86-64.so.2
#3  0x00007f8b8d75931b in ?? () from /lib64/ld-linux-x86-64.so.2
#4  0x00007f8b8d758a68 in ?? () from /lib64/ld-linux-x86-64.so.2
#5  0x0000000000000002 in ?? ()
#6  0x00007fff531bc8e2 in ?? ()
#7  0x0000000000000000 in ?? ()

regards, dejan

On 14. ruj. 2011., at 12:33, Dejan Gambin wrote:

> I have found "Segmentation fault" message in apache error.log each time I run GetFeatureInfo with MySQL join. No problem with PostgreSQL :-(
> 
> Any clue? Should I report it as a bug?
> 
> dejan
> On 13. ruj. 2011., at 22:51, Dejan Gambin wrote:
> 
>> Of course. And everything works when using ogrinfo for example
>> 
>> dejan
>> On 13. ruj. 2011., at 20:19, Carlos Ruiz wrote:
>> 
>>> Dejan,
>>> 
>>> One question: If you look at the OGR supported formats, does MySQL appears ?
>>> 
>>> Cheers from México
>>> 
>>> IC Carlos Ruiz
>>> 
>>> From: Dejan Gambin <dejan.gambin at coin.hr>
>>> To: mapserver-users at lists.osgeo.org
>>> Sent: Tuesday, September 13, 2011 8:13 AM
>>> Subject: Re: [mapserver-users] GetFeatureInfo using MySQL join - additional info
>>> 
>>> I was finally successful with getting data from joined table through GetFeatureInfo. But:
>>> 
>>> 1. It works only for PostgreSQL connection, not with MySQL - is it supposed to be so in MapServer 6? I saw the JOIN documentation changed and there is no MySQL mentioned any more/
>>> 2. I get nicely returned data from one-to-many join, using templates (thanks to Ted Spradley post). But gml returns only the main data, not the joined data. Is it supposed to be so?
>>> 
>>> Thanks very much
>>> 
>>> regards, dejan
>>> On 13. ruj. 2011., at 09:00, Dejan Gambin wrote:
>>> 
>>>> Some additional info:
>>>> 
>>>> Since I need this data only for GetFeatureRequest, it seems like I should use JOIN within a LAYER object. So I did the following:
>>>> 
>>>> LAYER
>>>> ...
>>>>   DATA "my"
>>>>   ...
>>>>   ...
>>>>   DUMP TRUE
>>>>   TEMPLATE "template.html"
>>>>   HEADER "template_header.html"
>>>>   FOOTER "template_footer.html"
>>>>   JOIN
>>>>     NAME "test"
>>>>     CONNECTION "MySQL:gis,host=localhost,user=gis,password=gis,tables=katastar_vodnjan"
>>>> #    CONNECTION "PG:host=localhost user=postgres password=runda711 dbname=vodnjan port=5432"     
>>>>     CONNECTIONTYPE ogr
>>>>     TABLE "katastar_vodnjan"
>>>>     FROM "KO_KC"
>>>>     TO "broj_ko_kc"
>>>>     TYPE ONE-TO-MANY
>>>>     TEMPLATE "template_join.html"
>>>> #	HEADER "template_header.html"
>>>> #	FOOTER "template_footer.html"    
>>>>   END  
>>>> 
>>>> I tried this with joined data from MySQL and from Postgres. No success. The interesting thing is, when I do:
>>>> 
>>>> shp2img -m my.map -o image.png -l "mylayer" -all_debug 3
>>>> 
>>>> I get:
>>>> 
>>>> [Tue Sep 13 08:58:04 2011].271467 msLoadMap(): 0.029s
>>>> [Tue Sep 13 08:58:04 2011].356888 msDrawMap(): Layer 0 (katastar_vodnjan_poligon), 0.083s
>>>> [Tue Sep 13 08:58:04 2011].356943 msDrawMap(): Drawing Label Cache, 0.000s
>>>> [Tue Sep 13 08:58:04 2011].356956 msDrawMap() total time: 0.085s
>>>> [Tue Sep 13 08:58:04 2011].399386 msSaveImage() total time: 0.042s
>>>> [Tue Sep 13 08:58:04 2011].402773 msPOSTGRESQLJoinClose() already close or never opened.
>>>> [Tue Sep 13 08:58:04 2011].402821 shp2img total time: 0.161s
>>>> 
>>>> Does anybody  know what is it? It happens for MySQL and Postgres database join
>>>> 
>>>> thanks very much
>>>> 
>>>> dejan
>>>> 
>>>> 
>>>> On 12. ruj. 2011., at 14:03, Dejan Gambin wrote:
>>>> 
>>>>> Hi,
>>>>> 
>>>>> After solving my compile problem (thanks to thomas), I need to do GetFeatureInfo to a shape layer joined to MySQL table (non-spatial join).
>>>>> 
>>>>> I compiled MapServer with MySQL support and everything seems ok, but "mapserv -v" doesn't return "INPUT=MYSQL". Is it supposed to anyway? Or it is enough to be compiled with gdal/ogr that supports MySQL?
>>>>> 
>>>>> Because - when I do this:
>>>>> 
>>>>> ogrinfo -sql "SELECT * FROM my LEFT JOIN 'MYSQL:gis,host=localhost,user=gis,password=gis'.katastar_vodnjan ON my.KO_KC=katastar_vodnjan.broj_ko_kc" /var/www/data/vodnjan/my.shp
>>>>> 
>>>>> I get all the attributes from shape (dbf) and MySQL, so everything seems fine
>>>>> 
>>>>> But using thi:
>>>>> 
>>>>> LAYER # katastar vodnjan poligoni
>>>>>   NAME "mylayer"
>>>>>   STATUS ON
>>>>>   CONNECTIONTYPE ogr  
>>>>>   CONNECTION "/var/www/data/vodnjan/my.shp"
>>>>>   DATA "SELECT * FROM my LEFT JOIN 'MYSQL:gis,host=localhost,user=gis,password=gis'.katastar_vodnjan ON my.KO_KC=katastar_vodnjan.broj_ko_kc"
>>>>>   TYPE POLYGON  
>>>>> ...
>>>>> 
>>>>> I don't get any information with GetFeatureInfo. The request is like:
>>>>> 
>>>>> http://www.coin.hr/cgi-bin/mywms61?SERVICE=WMS&VERSION=1.1.1&REQUEST=GetFeatureInfo&BBOX=5403800,4981350,5403980,4981460&SRS=EPSG:31275&WIDTH=400&HEIGHT=300&LAYERS=katastar_vodnjan_poligon&STYLES=&FORMAT=image/png&TRANSPARENT=true&QUERY_LAYERS=mylayer&INFO_FORMAT=gml&X=200&Y=100
>>>>> 
>>>>> Using the same request with regular mapfile:
>>>>> 
>>>>> LAYER # katastar vodnjan poligoni
>>>>>   NAME "mylayer"
>>>>>   STATUS ON
>>>>>   DATA "my"
>>>>>   TYPE POLYGON  
>>>>> ...
>>>>> 
>>>>> returns one feature and its attributes from the dbf (tha is OK)
>>>>> 
>>>>> I have also tried with JOIN clause in LAYER part, but this doesn't work either. Do I have to use owf? Am I doing something wrong?
>>>>> 
>>>>> regards, dejan
>>>>> _______________________________________________
>>>>> mapserver-users mailing list
>>>>> mapserver-users at lists.osgeo.org
>>>>> http://lists.osgeo.org/mailman/listinfo/mapserver-users
>>>> 
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