[mapguide-users] Storing WebLayout in Session Repository

[Paul Spencer]

Its a bit hard to explain quickly, but a MapDefinition is the static  
resource in the repository that defines a map.  When you start an  
application, you tell it to use a MapDefinition - this is essentially  
a 'template' of the map to use.  Internally, it creates a Map object  
from the MapDefinition and you can manipulate the Map object using  
the web tier API.  For instance, if you want to change the order of  
layers in a map, you get the layers collection of the Map and change  
it, you don't modify the XML of the MapDefinition.

My understanding of how this all works is still limited, so hopefully  
this description is reasonably correct :)

Paul

On 22-Feb-07, at 6:30 AM, Hidekazu Shimaji wrote:

> Hello,
>
> Not "NeulingenALK.Map" but "NeulingenALK.MapDefinition" is required  
> for the WebLayout.
> I tried the same way of you, but it did not work.
> I don't know why.  I finally gave up using the MgMap class,
> and used the SetResource function for setting a xml of the  
> MapDefinition.
>
> Does anybody know about it?
>
> Regards,
> Hidekazu Shimaji
>
> --- Gunter Becker <gunter.becker at CSOGIS.DE> wrote:
>
>>
>> OK your code works for me but now I got the problem that the map  
>> isn't shown
>> in the AjaxViewer. Instead I got hte following error message:
>>
>>   An unclassified exception occurred. Exception occurred in method
>> MgMap_Create__SWIG_0 at line 681 in file .\MgApi_wrap.cpp
>>
>> My Query to launch AjaxViewer:
>>
>>
>>
> http://geo19/mapguide/mapviewerajax/?SESSION=bb143bae-ffff- 
> ffff-8000-000476dc3d5a_en&amp;WEBLAYOUT=Session:bb143bae-ffff- 
> ffff-8000-000476dc3d5a_en//Current.WebLayout
>>
>> XML representation of the WebLayout:
>>
>>   <?xml version="1.0" encoding="utf-8" ?>
>>   <WebLayout xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
>> xmlns:xsd="http://www.w3.org/2001/XMLSchema"
>> xsi:noNamespaceSchemaLocation="WebLayout-1.0.0.xsd">
>>       <Title>ALK Neulingen</Title>
>>       <Map>
>>
>> <ResourceId>Session:279a9b8c-0000-1000-8000-000476dc3d5a_en// 
>> NeulingenALK.Map</ResourceId>
>>
>>           <HyperlinkTarget>TaskPane</HyperlinkTarget>
>>       </Map>
>>       ...
>>
>> Must the <ResourceId> be of Type "MapDefinition" or is "Map" also  
>> OK??
>>
>> To make things clear:
>>
>> My intention is to store the WebLayout into the session repository  
>> to give
>> the user the ability to leave the AjaxViewer and go to another  
>> webpage of my
>> application and then return to the AjaxViewer. All of the changes  
>> he had
>> done before leaving the map (changing colors, adding layers, ..)  
>> should be
>> avbailable after loading WebLayout stored in session.
>>
>> Is that the right way to this ??
>>
>>
>> Hidekazu Shimaji wrote:
>>>
>>> Hello,
>>>
>>> I don't think the ResourceHeader is the cause.
>>> You have to set the content of xmlWebLayout to byteArray.
>>>
>>> How about do like this:
>>>
>>> --- the code start
>>> //save the xml to MemoryStream
>>> System.IO.MemoryStream stream = new System.IO.MemoryStream();
>>> xmlWebLayout.Save(stream);
>>> // get byte array from the MemoryStream
>>> byte[] byteArray = stream.ToArray();
>>> //convert byte array to string without the first byte(BOM)
>>> string outerXml = System.Text.Encoding.UTF8.GetString(byteArray, 1,
>>> byteArray.Length - 1);
>>> // convert string to byte array with the utf-8 encoding
>>> byteArray = System.Text.Encoding.UTF8.GetBytes(outerXml);
>>>
>>> // store the WebLayout in Session-Repository
>>> MgByteSource byteSource = new MgByteSource(byteArray,
>>>    byteArray.Length);
>>> byteSource.MimeType = MgMimeType.Xml;
>>> MgResourceIdentifier userWebLayoutId = new
>>>     MgResourceIdentifier("Session:" + sessionId + @"//Current." +
>>>     MgResourceType.WebLayout);
>>>
>>> resourceService.SetResource(userWebLayoutId, byteSource.GetReader(),
>>> null);
>>> --- the code end
>>>
>>>
>>
>> -- 
>> View this message in context:
>> http://www.nabble.com/Storing-WebLayout-in-Session-Repository- 
>> tf3265925s16610.html#a9096652
>> Sent from the MapGuide Users mailing list archive at Nabble.com.
>>
>> _______________________________________________
>> mapguide-users mailing list
>> mapguide-users at lists.osgeo.org
>> http://lists.osgeo.org/mailman/listinfo/mapguide-users
>>
>
> _______________________________________________
> mapguide-users mailing list
> mapguide-users at lists.osgeo.org
> http://lists.osgeo.org/mailman/listinfo/mapguide-users

+-----------------------------------------------------------------+
|Paul Spencer                          pspencer at dmsolutions.ca    |
+-----------------------------------------------------------------+
|Chief Technology Officer                                         |
|DM Solutions Group Inc                http://www.dmsolutions.ca/ |
+-----------------------------------------------------------------+