Missing GeoPolygonValue DataValues, upgrade from SemanticMaps to Maps

[rijvirajib]

Setup

• Maps version: ~7.1
• MW version: 1.31 LTS
• PHP version: PHP 7.2.14
• SMW version (if applicable): ~3.0

Issue

Possibly related to #239 .

Upgrading from MediaWiki LTS 1.27 to LTS 1.31.
SemanticMaps has been merged into Maps (as per the docs).

I have an extension that uses Geometry and PolygonValues. It used to be that Maps had Maps\Semantic\DataValues\GeoPolygonValue but this has been removed. Is there any documentation on how to migrate from SemanticMaps to Maps ~7.0.0 and use GeoPolygonValue?

I extend CoordinateValue and PolygonValue for some datatypes:

       public static function spgfInitGeoDataTypes() {
		SMW\DataTypeRegistry::getInstance()->registerDatatype(
			'_geo',
			PostGISPointValue::class,
			SMWDataItem::TYPE_GEO
		);
		SMW\DataTypeRegistry::getInstance()->registerDatatype(
			'_gpo',
			PostGISPolygonValue::class,
			SMWDataItem::TYPE_BLOB
		);
		SMW\DataTypeRegistry::getInstance()->registerDatatype(
			'_gmy',
			PostGISPolygonValue::class,
			SMWDataItem::TYPE_BLOB
		);
		return true;
	}

[JeroenDeDauw]

This code was removed because the features that used it where broken for over 2 years without anyone complaining. Both the code and features are not present in the latest version of Maps so there is no migration path.

You can just copy the code you are using from the old version of Maps / Semantic Maps.