[Geomoose-users] query.php problem

[Jim Klassen]

Ok... looking at the MapServer code, it looks like msQueryByRect eventually calls msLayerWhichShapes, but then steps through all the results using msLayerNextShape and populates the layer's result cache.

So either we need to call whichShapes (instead of queryByRect) before our nextShapes while loop, and then call $map->queryByRect before our processTemplate (which is already there), or we need to call queryByRect and then loop through the result cache.

while($shape = $queryLayer->nextShape()) { 
	...
}

to

for($i = 0; i < $queryLayer->getNumResults(); i++) {
	$shape = $queryLayer->getResult(i);
	...
}

Although, since I'm not convinced that the shape re-projection code will work (it is re-projecting shapes it doesn't "own" and so is either re-projecting a copy and then throwing out the result or it is modifying the layer's result cache, which I'm not sure is "legal"), just setting

$numResults = $queryLayer->getNumResults();

and dropping the while(nextShape) loop may be cleaner.

Thoughts???

On Oct 16, 2012, at 7:07 AM, Matej Mailing wrote:

> Hi,
> 
> it seems that nextShape() requires a whichShapes() call before. So
> after adding $status =
> $queryLayer->whichShapes($queryLayer->getExtent()); before
> while($shape = $queryLayer->nextShape()) {
> 
> it works.
> 
> I don't know how it could work for anyone - perhaps older Mapserver
> didn't have this requirement?
> 
> Regards,
> Matej
> 
> 2012/10/15 Jim Klassen <klassen.js at gmail.com>:
>> The only thing I see is that they may be running different queries.
>> 
>> The first one (with the while loop) querying a single *layer* (although in theory the loop above that would loop through all the layers).  The second one is querying *map* and returning the processed template.
>> 
>> 
>> On Oct 15, 2012, at 9:02 AM, Matej Mailing wrote:
>> 
>>> Hi,
>>> 
>>> we have a problem when using Search with the query.php. The problem is
>>> that we always get a message: "No results found for your query! " even
>>> though I am sure that the item with such an attribute exists. When
>>> turning on the debug mode in query.php the output is:
>>> "...
>>> queryLayer iterated through
>>> Total Results: 0
>>> Results from MS: <a id="data-shape="coords"
>>> href="javascript:GeoMOOSE.zoomToPointsList(dojo.byId('data-[ID]').getAttribute("data-shape'),
>>> 'EPSG...');">data<br/>\n"
>>> 
>>> It's strange that the result from MS includes the result with the
>>> correct attributes from the DB, but Total Results is 0.
>>> 
>>> I have found out that "while($shape = $queryLayer->nextShape()) {"
>>> line is never true, therefore the code inside (which does the
>>> counting) never executes.
>>> 
>>> Since we are getting the data back from the Mapserver I suppose the
>>> Mapfile and the Mapbook.xml contents are correct.
>>> 
>>> What could be wrong here?
>>> 
>>> Thanks,
>>> Matej
>>> _______________________________________________
>>> Geomoose-users mailing list
>>> Geomoose-users at lists.osgeo.org
>>> http://lists.osgeo.org/mailman/listinfo/geomoose-users
>>