Helper to transform to Postgis multipolygon

server/lib/python/cartodb_services/cartodb_services/here/types.py

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+# Helper to deal with type conversion between HERE and PostGIS
+import plpy
+
+
+def geo_polyline_to_multipolygon(polyline):
+    """Convert a HERE polyline shape to a PostGIS multipolygon"""
+    coordinates = []
+    for point in polyline:
+        lat, lon = point.split(',')
+        coordinates.append("%s %s" % (lon, lat))
+    wkt_coordinates = ','.join(coordinates)
+
+    sql = "SELECT ST_MPolyFromText('MULTIPOLYGON((({0})))', 4326) as geom".format(wkt_coordinates)
+    geometry = plpy.execute(sql, 1)[0]['geom']
+
+    return geometry