Add a NOT NULL contraint on geometry columns when creating the output layer.

When the output driver supports altering GeomFieldDefn's nullable flag
after the fact.  PostgreSQL supports that.  GPKG doesn't, but one can
use GEOMETRY_NULLABLE=NO in layer creation options instead.

See https://gdal.org/en/stable/development/rfc/rfc53_ogr_notnull_default.html

This commit partially reverts 2c3ee79cb434fc4cf315ee3a6a526156053d76c4.

1 files changed, 9 insertions, 0 deletions

diff --git a/webmap-import b/webmap-import
index b4552d5..a68d60e 100755
--- a/webmap-import
+++ b/webmap-import
@@ -256,6 +256,15 @@ def processOutputLayer(ds : gdal.Dataset,
         raise RuntimeError(f'Output layer "{layername}" has no working '
                            'CreateFeature() method')
 
+    geom_field_idx = 0
+    geom_field = lyr.GetLayerDefn().GetGeomFieldDefn(geom_field_idx)
+    logging.debug('Geometry column #%d: name="%s\", type="%s", srs=%s, nullable=%s',
+                  geom_field_idx, geom_field.GetName(),
+                  ogr.GeometryTypeToName(geom_field.GetType()),
+                  '-' if geom_field.GetSpatialRef() is None
+                     else '"' + geom_field.GetSpatialRef().GetName() + '"',
+                  bool(geom_field.IsNullable()))
+
     sources = layerdef['sources']
     if not (lyrcache is None or force or
             areSourceFilesNewer(layername, sources=sources,