Merge pull request #448 from jyutzler/i445

eliminate use of "assignable" #445

spec/2a_features.adoc

@@ -314,13 +314,12 @@ The geometry type of a feature geometry column specified in the `gpkg_geometry_c
 [caption=""]
 .Requirement 32
 ====
-Feature table geometry columns SHALL contain geometries of the type or assignable for the type specified for the column by the `gpkg_geometry_columns` table `geometry_type_name` uppercase column value ^<<K13>>^
+Feature table geometry columns SHALL contain geometries of the type [line-through]#or assignable for the type# specified for the column by the `gpkg_geometry_columns` table `geometry_type_name` uppercase column value ^<<K13>>^.
 ====
 
-Geometry subtypes are assignable as defined in <<geometry_types>> and shown in part in <<core_geometry_model_figure>>.
-For example, if the `geometry_type_name` value in the `gpkg_geometry_columns` table is for a geometry type like POINT that has no subtypes, then the feature table geometry column MAY only contain geometries of that type.
-If the geometry `type_name` value in the `gpkg_geometry_columns` table is for a geometry type like GEOMETRYCOLLECTION that has subtypes, then the feature table geometry column MAY only contain geometries of that type or any of its direct or indirect subtypes.
-If the geometry `type_name` is GEOMETRY (the root of the geometry type hierarchy) then the feature table geometry column MAY contain geometries of any geometry type.
+Allowed geometry types are defined in <<geometry_types>> and shown in part in <<core_geometry_model_figure>>. 
+If the geometry `type_name` value is "GEOMETRY" then the feature table geometry column MAY contain geometries of any allowed geometry type.
+If the geometry `type_name` value is "GEOMETRYCOLLECTION" then the feature table geometry column MAY contain zero or more geometries of any allowed geometry type.
 
 The presence or absence of optional elevation (Z) and/or measure (M) values in a geometry does not change its type or assignability. The unit of measure for optional elevation(Z) values is determined by the CRS of the geometry; it is as-defined by a 3D CRS, and undefined for a 2D CRS. The unit of measure for optional measure (M) values is determined by the CRS of the geometry.
 

spec/annexes/ats.adoc

@@ -494,15 +494,15 @@ FROM gpkg_geometry_columns WHERE table_name IN
 [cols="1,5a"]
 |========================================
 |*Test Case ID* |+/opt/features/vector_features/data/data_values_geometry_type+
-|*Test Purpose* |Verify that the geometry type of feature geometries are of the type or are assignable for the geometry type specified by the `gpkg_geometry` columns table `geometry_type_name` column value.
+|*Test Purpose* |Verify that the geometry type of feature geometries are of the type specified by the `gpkg_geometry` columns table `geometry_type_name` column value.
 |*Test Method* |
 . SELECT table_name AS tn, column_name AS cn, geometry_type_name AS gt_name FROM gpkg_geometry_columns WHERE table_name IN (SELECT table_name FROM gpkg_contents WHERE data_type = 'features')
 . Not testable if returns an empty result set
 . For each row from step 1
-.. *Select the set of geometry types in use for the values in cn
+.. Select the set of geometry types in use for the values in cn
 .. For each row actual_type_name from step a
-... *Determine if each geometry type is assignable to the actual_type_name
-... Fail if any are not assignable
+... Determine if each geometry type matches the actual_type_name
+... Fail if any geometries do not match
 . Pass if no fails
 |*Reference* |Clause 2.1.6.1.2 Req 32:
 |*Test Type* |Capability