[mapguide-users] Adding layers permanent

[peter56]

Dear all,

based on the example in the Developer's Guide, I created a new Layer to the
map at runtime:

    // Neuen MG-Layer definieren
    $featureClass = 'Library://projekt/'
      . 'mysql.FeatureSource';
    $featureName = 'Fdotest:agmg_wasleitung';
    $geometry = 'graphik';
	$layerDefinition = $factory->
	  CreateLayerDefinition($featureClass, $featureName,
	  $geometry, $lineScaleRange);

    //---------------------------------------------------//
    // ...

    // in die Karte einfügen
    $newLayer = add_layer_definition_to_map($layerDefinition, "alle",
"alle", $sessionId, $resourceService, $map);
    add_layer_to_group($newLayer, "Analysis", "Analysis", $map);

    // --------------------------------------------------//
    // jetzt sichtbar machen
    $layerCollection = $map->GetLayers();
    if ($layerCollection->Contains("alle"))
    {
        $squareFootageLayer =$layerCollection->GetItem("alle");
        $squareFootageLayer->SetVisible(TRUE);
    }


      //---------------------------------------------------//
      //  im session repository speichern
      $sessionIdName = "Session:$sessionId//$mapName.Map";
      $sessionResourceID = new MgResourceIdentifier($sessionIdName);
      $sessionResourceID->Validate();
      $map->Save($resourceService, $sessionResourceID);

It works fine. (Very thanks to all writers of the Developer's Guide!) Now I
have only one problem:

I tried to make the changes permanent using the code from Developer's Guide,
but nothing happens:

    // jetzt nach Handbuch Kapitel 4, Seite 66 den Layer in die Datenbank
schreiben
    $byteSource = new MgByteSource($layerDefinition,
strlen($layerDefinition));
    $byteSource->SetMimeType(MgMimeType::Xml);
    $resourceId = new
MgResourceIdentifier("Library://LayerName.LayerDefinition");
    $resourceService->SetResource($resourceId, $byteSource->GetReader(),
null);

What am I doing wrong?

Regards - Peter
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