[mapserver-dev] Implement getNumFeatures for some drivers

[Tamas Szekeres]

Since the feature freeze date was scheduled for today and the proposed changes should not break anything, I’ve merged it into master.

Best regards,
Tamas

Sent from my iPhone

2018. máj. 1. dátummal, 20:38 időpontban Lime, Steve D (MNIT) <steve.lime at state.mn.us> írta:

> +1 from me (to include it)...
>  
> From: Tamas Szekeres <szekerest at gmail.com>
> Sent: Monday, April 30, 2018 5:34:09 PM
> To: Lime, Steve D (MNIT)
> Cc: mapserver-dev at lists.osgeo.org
> Subject: Re: [mapserver-dev] Implement getNumFeatures for some drivers
>  
> Created a pull request with the suggested changes:
> 
> https://github.com/mapserver/mapserver/pull/5591
> 
> Keen to have it included in 7.2 if that's sufficient.
> 
> Thanks,
> 
> Tamas
> 
> 
> 2018-04-28 0:48 GMT+02:00 Lime, Steve D (MNIT) <steve.lime at state.mn.us>:
> A filter is basically a where statement so I think it should be considered...  
> From: mapserver-dev <mapserver-dev-bounces at lists.osgeo.org> on behalf of Tamas Szekeres <szekerest at gmail.com>
> Sent: Sunday, April 22, 2018 2:36:44 PM
> To: mapserver-dev at lists.osgeo.org
> Subject: [mapserver-dev] Implement getNumFeatures for some drivers
>  
> Hi Devs,
> 
> Currently getNumFeatures is supported by the inline layers only. Would that be sufficient to implement this for some other drivers, like  MSSQL, PostGIS and OGR? 
> 
> The database drivers would probably rely on the count() aggegate in the SQL query, while we could use  OGR_L_GetFeatureCount for the OGR layers.
> 
> I could also imagine a default implementation if we use whichShapes on the layer extent and iterate the shapes to calculate the count.
> 
> It is also a question whether getNumFeatures should consider the layer filter or not.
> 
> Best regards,
> 
> Tamas
> 
> 
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