[Cartoweb-users] Queries on layers using mapoverlay

[Oliver Christen]

well, the layer should be queryable during the time of a session, meaning 
until the user close his browser. I see no reason why it wouldnt be 
queryable, unless you forgot to set a TEMPLATE='ttt_or_whatever' in the 
layer definition

if you wany to keep the added from one session to another, you need to 
modify your plugin to store the added layers in database or someting like 
that add reload theses layer automaticaly if they dont already exist.

> 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
>
> iQuadro - Informatica e Innovazione s.r.l.
> Via C. Pisacane 23, Aversa (CE) - 81031
> Web : www.ii2.it
> Tel.: 081 197 57 600
> mail: fabiodovidio at gmail.com
>
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