> > In the provider we could decide to allocate layer ids diffently than OGR . > > >> Example if you have a dataset with > > - layer1 (geom1, geom2) > > - layer2 (geom) > > >> Then you would map that to : > > - qgis_ogr_provider_layer_id = 1: layer1, geom1 > > - qgis_ogr_provider_layer_id = 2: layer1, geom2 > > - qgis_ogr_provider_layer_id = 3: layer2, geom > > Which gdal function would then called for this construction - the function that needs an id cannot use qgis_ogr_provider_layer_id
Some value must also be stored in the project, that must be valid days or weeks later. Is there a function that can use the original id and OGR_F_GetGeomFieldRef()? Mark
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