[Cartoweb-users] Queries on layers using mapoverlay

[Fabio D'Ovidio]

Hi!
I've update dinamically one layer using mapoverlay as described here:


      3.2.3. Filter data

$layer = new LayerOverlay();
$layer->name = "field";
$layer->data = "geom FROM (SELECT gid, geom, name FROM fields WHERE farm_id = {$farmId}) " .
               "AS foo USING UNIQUE gid USING SRID=-1";
        
$mapOverlay = $this->serverContext->getPluginManager()->mapOverlay;
$mapOverlay->updateMap($layer);



Now, i want to query this layer and display the result.
Query doesn't work because the modification are not saved in the 
project's mapfile: the result of the mapfile modifications are specific 
to a session.
My debug map file is debug.map.

$pluginManager = $this->serverContext->getPluginManager();
            if (empty($pluginManager->mapOverlay))
                throw new CartoserverException("mapOverlay plugin not 
loaded, "
                                               . "and needed to draw the 
new element");
   
            $pluginManager->mapOverlay->updateMap($layer);
           
           
            $this->serverContext->getMapObj()->save('C:/debug.map');




How can I do to query my updated layer?


Thanks

-- 
Ing. Fabio D'Ovidio

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