[QGIS-trac] Re: [Quantum GIS] #2188: Merging of multipolygons fail/issues

[Quantum GIS]

#2188: Merging of multipolygons fail/issues
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        Reporter:  lutra                             |         Owner:  nobody       
            Type:  bug                               |        Status:  new          
        Priority:  major: does not work as expected  |     Milestone:  Version 1.4.0
       Component:  Build/Install                     |       Version:  HEAD         
      Resolution:                                    |      Keywords:               
Platform_version:                                    |      Platform:  All          
        Must_fix:  Yes                               |   Status_info:  0            
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Comment (by mhugent):

 a) is a bug and should be fixed in r12327

 b) is most likely in a polygon type layer (not multipolygon)?
 The merge of non-adjacent features would result in a multipolygon feature.
 And most datasources consequently reject multipolygons in polygon layers
 (e.g. postgis), while shape does not. The editing code cannot know if the
 datasource allows that or not, so it is rejected.

 c) could be a problem that arises if (during commit), features are added
 before deleted .

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Ticket URL: <http://trac.osgeo.org/qgis/ticket/2188#comment:1>
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