Thanks for the contrib. I will test it soon and see how it can be
implemented.
Just a question as you mentioned that the default function was slow:
When you tried, did you have set an index on the OID field? Without that
index it can be very slow with Postgis layers as it has to do a seq scan
to retrieve all features with the defined id. PG without indexes is
really slow...
armin
Gail Long wrote:
> I bugged Armin a lot and he has always been very helpful. I'd be happy to
> help out with some contributions.
>
> Here is a good way to do the hilighting so that you don't have to add all of
> the lines to each shapes. It scales better and works much much faster. It
> works best with POSTGIS layers, but thats mostly what I deal with. My users
> rarely ever query shape file based layers.
>
> I based this off of a VERY modified 1.0.8 p.mapper. In incphp/map.php
> replace pmap_checkResultLayers function and the the highlighting function
> that follows it with this. On the older p.mapper versions you should be
> able to just drop it in.
>
> All it does is create a dynamic layer by cloning the one that will be
> highlighted. Then it writes it over the one being queried. This works well
> if you need to have a big query limit set or you have lots of features in a
> layer.
>
> /*
> * CHECK IF THERE ARE RESULTLAYERS TO ADD
> ********************************************************/
> function pmap_checkResultLayers()
> {
> if (isset($_GET["resultlayer"]))
> {
> $resultlayerStr = $_GET["resultlayer"];
>
> if ($resultlayerStr == "remove")
> {
> session_unregister("resultlayers");
> }
> else
> {
> $resultlayer = explode(" ", $resultlayerStr);
> $reslayname = $resultlayer[0];
> $shpindexes = explode("|", $resultlayer[1]);
> $resultlayers[$reslayname] = $shpindexes;
> $_SESSION["hilayer"] = $reslayname;
> $_SESSION["resultlayers"] = $resultlayers;
> $this->pmap_addhiLayer($reslayname, $shpindexes);
> }
> }
> elseif (isset($_SESSION["resultlayers"]))
> {
> $resultlayers = $_SESSION["resultlayers"];
>
> foreach ($resultlayers as $reslayer => $shpindexes)
> {
> $this->pmap_addhiLayer($reslayer, $shpindexes);
> }
> }
> }
> /*
> * FOR ZOOM TO SELECTED.
> * Adds a new layer to the map for highlighting feature
> *****************************************************************/
> function pmap_addhiLayer($layerIn, $shpindexes)
> {
>
> if(!$layerIn)
> $layerIn = $_SESSION['activegroup'];
>
> $reslayers = $_SESSION['resultlayers'];
>
> if(!$reslayers)
> {
> $objects = $shpindexes;
> }
> else
> {
> $objects = $reslayers[$layerIn];
> }
>
> $clone = $this->map->getLayerByName($layerIn);
>
> $newResLayer = ms_newLayerObj($this->map);
> $newResLayer->set('type',$clone->type);
> $newResLayer->set('name','target');
> $newResLayer->set('data',$clone->data);
> $newResLayer->set('connection',$clone->connection);
> $newResLayer->set('connectiontype',$clone->connectiontype);
>
> $newResLayer->set('classitem','oid');
> $newResLayer->set('status',MS_ON);
>
> $limit = sizeof($objects);
>
> for($ii = 0;$ii < $limit;$ii++)
> {
> if($objects[$ii] != '')
> {
> if($ii == $limit - 1)
> $filterstring .= $objects[$ii];
> else
> $filterstring .= $objects[$ii].'|';
> }
> }
>
> if($limit > 0 || $_SESSION['queryresults'] || $filterstring != '')
> {
> $hiClass = ms_newClassObj($newResLayer);
> $hiClass->set('status',MS_ON);
> $hiClass->setExpression('/'.$filterstring.'/');
>
> // SELECTION COLOR
> $iniClrStr = trim($_SESSION["highlightColor"]);
> $iniClrList = preg_split('/[\s,]+/', $iniClrStr);
> $iniClr0 = $iniClrList[0];
> $iniClr1 = $iniClrList[1];
> $iniClr2 = $iniClrList[2];
>
> $hiStyle = ms_newStyleObj($hiClass);
> $hiStyle->set('symbolname','circle');
> $hiStyle->outlinecolor->setRGB($iniClr0,$iniClr1,$iniClr2);
> if($_SESSION["marker"] != 'outline')
> $hiStyle->color->setRGB($iniClr0,$iniClr1,$iniClr2);
>
> //increase the width of the line as we move out
> if($_SESSION['geo_scale'] > 80000)
> $symSize = 12;
> else
> {
> $symSize = ($qlayType < 1 ? 5 : 3);
> }
>
> $hiStyle->set('size',5);
>
> $this->hiliteLayer = $newResLayer;
> }
> }
>
>
>
> --
> Things are only difficult while you don't understand them.
>
>
>
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