[mapserver-dev] Single Pass Branch (mode=nquery)

Steve Lime Steve.Lime at dnr.state.mn.us
Mon Jun 15 11:14:07 EDT 2009

What does your mapfile look like? To you have the shape cache (which I will remove) turned
on? Note that I did NOT implement the changes in all the template code, in fact, only the newer
style templates or WFS should be used for testing in that sandbox.


>>> On 6/10/2009 at 5:49 PM, in message <4A2FF2180200004F000117BF at jeckle>, "Jim
Klassen" <Jim.Klassen at ci.stpaul.mn.us> wrote:
> I have noticed another problem with the single pass branch and OracleSpatial 
> layers. I haven't tested it yet, but I suspect from scanning the code it will 
> effect PostGIS as well. It appears when query maps are enabled.
> What appears to be happening is:
>  1) the query is executed
>       -> WhichShapes is called to setup the query/cursor and start the fetch
>       -> NextShapes is called to fill the result set
>  2) the query map is drawn which re-opens the layer, calls WhichShapes thus 
> destroying the previous query state then closes the layer
>  3) ReturnNestedTemplateQuery is called which expects the layer state to be 
> the same as after step 1.
> (gdb) bt
> #0  msOracleSpatialLayerClose (layer=0x6841c0) at maporaclespatial.c:1622
> #1  0x0000000000458689 in msDrawVectorLayer (map=0x66bba0, layer=0x6841c0, 
> image=0x684050) at mapdraw.c:1018
> #2  0x00000000004587ea in msDrawLayer (map=0x66bba0, layer=0x6841c0, 
> image=0x684050) at mapdraw.c:743
> #3  0x0000000000458ebd in msDrawQueryLayer (map=0x6841c0, layer=0x6841c0, 
> image=0x684050) at mapdraw.c:1053
> #4  0x0000000000459c7c in msDrawMap (map=0x66bba0, querymap=1) at 
> mapdraw.c:439
> #5  0x00000000004141b6 in msGenerateImages (mapserv=0x66a540, bQueryMap=0, 
> bReturnOnError=1) at maptemplate.c:3868
> #6  0x000000000041da39 in msReturnTemplateQuery (mapserv=0x66a540, 
> queryFormat=0x66edd0 "text/xml", papszBuffer=0x0) at maptemplate.c:228
> #7  0x0000000000411018 in main (argc=11, argv=<value optimized out>) at 
> mapserv.c:1774
> I've been staring at this too long... Anyone have any ideas on how to fix 
> this?
> Jim K
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