[mapguide-users] Intermittent MapGuide issue

[Gordon Luckett]

Strangely, I sometime do this:

$mySel = $sel->ToXml();
$this->originalSel = $mySel;

and I find that works better..



On Wed, May 17, 2023 at 2:17 PM David Bowen <dbowenrci at gmail.com> wrote:

> Our application has functionality where a user can search for an address
> and then click on a button to return data, when available, from a selection
> of layers. We're encountering an issue where there is data present, however
> when the user clicks the button, MapGuide returns an error saying no valid
> objects are selected. If the user clicks the button a second time, results
> are returned. This seems like a MapGuide error and I've been attempting to
> troubleshoot it without success.
> This issue is intermittent and only seems to exist in our Development
> environment, however I can recreate it if I export the Development package
> from Maestro and import it into another environment.
>
> The relevant section of code that seems to be failing is:
>
> $myMap = $this->MapGuideObject->getMap();
> $session = $this->mgSessionId;
> $mapName = $this->mgMapID;
> $objkeys = '';
> $errorMsg = null;
> $siteConnection = $this->MapGuideObject->getSiteConnection();
> // Get an instance of the Resource and Mapping Services and use them to
> open
> // the map and initialize a selection object.
> $resourceSrvc = $this->MapGuideObject->getResourceService();
> $featureSrvc = $this->MapGuideObject->getFeatureService();
> //Get selected map layers.
> $sel = new MgSelection( $myMap );
>
> $sel->Open( $resourceSrvc, $mapName );
>
> $this->originalSel = $sel->ToXml();
> $selLayers = $sel->GetLayers();
> //Check to see if no objects are selected.
>
> It appears that the line $this->originalSel = $sel->ToXml(); is the issue
> as there are times where it returns data but other times it's an empty
> string. Has anyone encountered an issue like this, or would anyone have an
> idea of how to resolve it?
> Alternatively, what would be the best way to try to catch a potential
> MapGuide error that is being generated? I believe that we have all error
> logging turned on but nothing has appeared in the log files.
>
> Thanks,
> David
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>
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