@Override
    public void filter(Metadata metadata) throws TikaException {
        String lat = metadata.get(TikaCoreProperties.LATITUDE);
        if (StringUtils.isEmpty(lat)) {
            return;
        }
        String lng = metadata.get(TikaCoreProperties.LONGITUDE);
        if (StringUtils.isEmpty(lng)) {
            return;
        }
        metadata.set(geoPointFieldName, lat + "," + lng);
    }
Set the field for the concatenated LATITUDE,LONGITUDE string.
The default if &dquot;location&dquot;

@param geoPointFieldName field name to use for the geopoint field
tika-core/src/main/java/org/apache/tika/metadata/filter/GeoPointMetadataFilter.java