'Re: [mapguide-users] Filter features in the viewer'

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List: mapguide-users
Subject: Re: [mapguide-users] Filter features in the viewer
From: "Kenneth Skovhede, GEOGRAF A/S" <ks () geograf ! dk>
Date: 2009-05-25 8:03:36
Message-ID: 4A1A50D8.7000306 () geograf ! dk
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Try this instead:

MgLayers.Filter = "FG = '3'";
map.Save();

Regards, Kenneth Skovhede, GEOGRAF A/S

vittorio skrev:
> Where can I find code examples regarding filter on the run-time layer?
>
> I post my code used:
>
>     String whereClause = "FG = '3'";
>     String layerNameDaFiltrare = "par10";
>     MgFeatureQueryOptions queryOptions = new MgFeatureQueryOptions();
>     queryOptions.SetFilter(whereClause);
>     MgLayer layer = (MgLayer) map.GetLayers().GetItem(layerNameDaFiltrare);
>     MgFeatureReader featureReader = layer.SelectFeatures(queryOptions);
>
> Thanks for your reponse.
>
> Vittorio.
>
>
>
> Kenneth Skovhede, GEOGRAF A/S wrote:
>   
>> You must set the filter on the RuntimeLayer, not the LayerDefinition.
>> Also, look in the server log for clues.
>> There is a quirk in MapGuide, that it will render the entire layer 
>> without filters, if the filter fails.
>> I'm not sure you get a log message in that case, but start out with a 
>> simple filter like:
>> ID = 3
>>
>> Regards, Kenneth Skovhede, GEOGRAF A/S
>>
>>
>>
>> Vittorio Ricchiuto skrev:
>>     
>>> Hi,
>>>
>>>  
>>>
>>> I would filter features in the viewer, how can I do? I filter with the 
>>> web API by SetFilter, but I do not see the effect on the map 
>>> although I refresh the map.
>>>
>>>  
>>>
>>> Thank you for your help.
>>>
>>>  
>>>
>>> Vittorio.
>>>
>>>  
>>>
>>> ------------------------------------------------------------------------
>>>
>>> _______________________________________________
>>> mapguide-users mailing list
>>> mapguide-users@lists.osgeo.org
>>> http://lists.osgeo.org/mailman/listinfo/mapguide-users
>>>   
>>>       
>> _______________________________________________
>> mapguide-users mailing list
>> mapguide-users@lists.osgeo.org
>> http://lists.osgeo.org/mailman/listinfo/mapguide-users
>>
>>
>>     
>
>   

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Try this instead: 
 
MgLayers.Filter = "FG = '3'"; 
map.Save(); 
<pre class="moz-signature" cols="72">Regards, Kenneth Skovhede, GEOGRAF A/S
</pre>
 
 
vittorio skrev:
<blockquote cite="mid:1243238236863-2968435.post@n2.nabble.com"
 type="cite">
 <pre wrap="">Where can I find code examples regarding filter on the run-time layer?

I post my code used:

    String whereClause = "FG = '3'";
    String layerNameDaFiltrare = "par10";
    MgFeatureQueryOptions queryOptions = new MgFeatureQueryOptions();
    queryOptions.SetFilter(whereClause);
    MgLayer layer = (MgLayer) map.GetLayers().GetItem(layerNameDaFiltrare);
    MgFeatureReader featureReader = layer.SelectFeatures(queryOptions);

Thanks for your reponse.

Vittorio.

Kenneth Skovhede, GEOGRAF A/S wrote:
  </pre>
  <blockquote type="cite">
    <pre wrap="">You must set the filter on the RuntimeLayer, not the \
LayerDefinition. Also, look in the server log for clues.
There is a quirk in MapGuide, that it will render the entire layer 
without filters, if the filter fails.
I'm not sure you get a log message in that case, but start out with a 
simple filter like:
ID = 3

Regards, Kenneth Skovhede, GEOGRAF A/S

Vittorio Ricchiuto skrev:
    </pre>
    <blockquote type="cite">
      <pre wrap="">Hi,

I would filter features in the viewer, how can I do? I filter with the 
web API by SetFilter, but I do not see the effect on the map 
although I refresh the map.

Thank you for your help.

Vittorio.

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