[mapguide-users] Adding a dynamic layer BEFORE displaying the map

Minh Quân quandx at gmail.com
Mon Jan 21 04:03:16 EST 2008

The Best solution for you.
You need to have a page (Asp or JSP or PHP) to create layer (like address
Create a hidden frame in frametaskbar (or framenotaskbar).
In a mainframe file (mainframe.aspx, mainframe.php or mainframe.jsp)
This file will write client page. Insert more code to write custom page with
session parameter already created by mainframe file.

On 21/01/2008, Kenneth, GEOGRAF A/S <ks at geograf.dk> wrote:
>  If you want to add it before the map loads, there is no session.
> This happens because the MapGuide AJAX viewer creates the session and the
> runtime map.
> You have to create the LayerDefinition and the MapDefinition in the
> Library repository.
> My best solution for this is to create a folder like "Libray://Temp".
> Then create a GUID for each resource, and dump it here.
> After the AJAX viewer loads, you may delete the created items, as it then
> uses the RuntimeMap in the session repository.
> Regards, Kenneth, GEOGRAF A/S
> uXuf skrev:
> Its just a copy of the parcelmarker.xml from the samples. It works otherwise
> with tasks, but I couldn't seem to get it work before the map is loaded.
> uXuf
> Jackie Ng wrote:
>  What does the feature source xml look like? It seems that feature source
> xml is an invalid document.
> - Jackie
> uXuf wrote:
>  Hi all,
> I am trying to add a dynamic layer to a map but before loading the map in
> the map frame. It is supposed to work on some query string parameters and
> should add a dynamic layer based on that information. I can add the Map
> to the session. I want to query the map from the Session Repository and
> work on a copy, however I keep getting the
> Session:xxxx//PointPlotter.FeatureSource Exception occurred in method
> MgResourceDefinitionManager.GetDocument at line 476 in file
> c:\build_bond_area\mapguide_open_source_v1.2\build_18.1\mgdev\server\src\services\resource\ResourceDefinitionManager.cpp
> error.
> Here is how I constructed the logic:
> 1- Make a new MgSite object
> 2- Use MgSite->Open with a new MgUserInformation object
> 3- store the session ID in a variable
> 4- Check GET parameters
> 5- if records exists depending on the GET parameters, make a new
> MgSiteConnection object
> 6- Open this MgSiteConnection object with the session ID
> 7- Create a ResourceService by using MgSiteConnection->CreateService
> 8- Open the map by using $map->Open($resourceService, 'MapName') (EDIT: I
> used the $map->Create() function)
> 9- Verify and add layers (building upon the Sheboygan Find Parcel example
> from MG 1.1 samples)
> Do I need to explicity add a feature source to the session repository?
> But I think that's what exactly the CreatePointPlotterFeatureSource
> function does from the findparcelsfunctions.php does in the samples.
> And this error occurs when I call the CreatePointPlotterFeatureSource
> function. When I add a new FeatureSource in the form of
> MgResourceIdentifier it works fine (i.e. no errors generated), but on the
> first call to the above-mentioned function it crashes. Apparently it
> doesn't execute even the first line which I changed into an "echo" for
> debugging purposes.
> Anybody got any tips?
> Regards,
> uXuf
> _______________________________________________
> mapguide-users mailing list
> mapguide-users at lists.osgeo.org
> http://lists.osgeo.org/mailman/listinfo/mapguide-users

Đỗ Xuân Quân
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