[mapguide-trac] #160: GDAL Provider Accesses data even if layer not visible

[MapGuide Open Source]

#160: GDAL Provider Accesses data even if layer not visible
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   Reporter:  amorsell at spatialgis.com  |       Owner:       
       Type:  defect                   |      Status:  new  
   Priority:  high                     |   Milestone:       
  Component:  Feature Service          |     Version:  1.2.0
   Severity:  major                    |    Keywords:       
External_id:                           |  
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 version 1.2.0 beta 2

 This seems to happen only the first time a map is accessed after a given
 MapGuide Server service start.  If the map has a GDAL based layer, even if
 the layer is not visible on the map both from the settings in the map and
 from it's zoom scale threshold, the GDAL provider still attempts to read
 every image within that data connection folder.  If you close the session
 and re-open the same map, the GDAL provider will not be active until the
 layer is visible.  In my particular case, with about 1500 tiled MrSID
 images, this initial hit can take over a minute to process and return the
 map image to the viewer.

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Ticket URL: <http://trac.osgeo.org/mapguide/ticket/160>
MapGuide Open Source <http://mapguide.osgeo.org/>
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