[mapguide-users] MgLayerBase::GetClassDefinition fails on MGOS1.2RC2

[Zac Spitzer]

i have had similiar problems with GetClassDefinition with differring
results between 1.1 and 1.2rc2

 i think there may be some underlying caching going on in the FDO
layer.. what type of FDO source are you working with?

On 8/24/07, Takashige Nakagawa <ta-nakagawa at apptec.co.jp> wrote:
> Hi, all.
>
> Now I'm writing some test programs on MGOS 1.2 RC2. In the codes below,
> MgLayerBase::GetClassDefinition causes an exception "Class not found."
> When I use MgFeatureService ( as I do on Ver 1.1 ) instead , everything
> works fine.
>
> Is there something I do wrong?
>
> Regards.
>
> Takashige
>
> ----Codes-------------------------------------------
>     String doTest()
>     {
>         NameValueCollection parameters = GetRequestParameters(Request);
>         String sessionId = GetParameter(parameters, "_session_id_");
>         String mapName = GetParameter(parameters, "_mapname_");
>         String layerName = GetParameter(parameters, "_layername_");
>         MgUserInformation userInfo = new MgUserInformation(sessionId);
>         MgSiteConnection siteConnection = new MgSiteConnection();
>         siteConnection.Open(userInfo);
>         MgMap map = new MgMap(siteConnection);
>         map.Open(mapName);
>         MgLayerBase layer = GetLayerByName(map, layerName);
>
>         // Version1.1 ******* Works fine on ver 1.2 !
>         //MgFeatureService featureService = _
>         //     siteConnection.CreateService(MgServiceType.FeatureService) as
> MgFeatureService;
>         //MgClassDefinition classDef = GetClassDefinitionV11(featureService,
> layer);
>
>         // Version1.2  ******* Fails!  What's wrong?? *******************
>         MgClassDefinition classDef = layer.GetClassDefinition();
>
>         return layerName;
>     }
>
>     MgClassDefinition GetClassDefinitionV11(MgFeatureService featureService,
> MgLayerBase layer)
>     {
>         String featureSourceId = layer.GetFeatureSourceId();
>         MgResourceIdentifier featureSourceResId = new
> MgResourceIdentifier(featureSourceId);
>         String featureClassName = layer.GetFeatureClassName();
>         String[] schemaClass = featureClassName.Split(new char[] { ':' });
>         String schemaName = schemaClass[0];
>         String className = schemaClass[1];
>         return featureService.GetClassDefinition(featureSourceResId,
> schemaName, className);
>     }
>
>     NameValueCollection GetRequestParameters(HttpRequest request)
>     {
>         if ("POST" == request.HttpMethod)
>         {
>             return request.Form;
>         }
>         else
>         {
>             return request.QueryString;
>         }
>     }
>
>     String GetParameter(NameValueCollection parameters, String name)
>     {
>         String strval = parameters[name];
>         if (null == strval)
>             return "";
>
>         return strval.Trim();
>     }
>
>     MgLayerBase GetLayerByName(MgMap map, String layerName)
>     {
>         MgLayerCollection layers = map.GetLayers();
>         MgLayerBase layer = null;
>         for (int i = 0; i < layers.GetCount(); i++)
>         {
>             MgLayerBase nextLayer = layers.GetItem(i);
>             if (nextLayer.GetName() == layerName)
>             {
>                 layer = nextLayer;
>                 break;
>             }
>         }
>         return layer;
>     }
> ------------------------------------------------------------------------
>
> _______________________________________________
> mapguide-users mailing list
> mapguide-users at lists.osgeo.org
> http://lists.osgeo.org/mailman/listinfo/mapguide-users
>


-- 
Zac Spitzer
http://zacster.blogspot.com/
+61 3 9018 5778 (voip via my pc)
+61 405 847 168 (aussie moible)