X-Git-Url: https://git.openstreetmap.org./nominatim.git/blobdiff_plain/bd2c64876f7ddc99da14ea78a652f797e17134f4..6c4c9ec1f2fb2ae2026f3cd59c505dd33c4ebe3e:/nominatim/api/types.py

diff --git a/nominatim/api/types.py b/nominatim/api/types.py
index 87568a09..7cb7b133 100644
--- a/nominatim/api/types.py
+++ b/nominatim/api/types.py
@@ -14,9 +14,9 @@ import dataclasses
 import enum
 import math
 from struct import unpack
+from binascii import unhexlify
 
-from geoalchemy2 import WKTElement
-import geoalchemy2.functions
+import sqlalchemy as sa
 
 from nominatim.errors import UsageError
 
@@ -73,9 +73,11 @@ class Point(NamedTuple):
 
 
     @staticmethod
-    def from_wkb(wkb: bytes) -> 'Point':
+    def from_wkb(wkb: Union[str, bytes]) -> 'Point':
         """ Create a point from EWKB as returned from the database.
         """
+        if isinstance(wkb, str):
+            wkb = unhexlify(wkb)
         if len(wkb) != 25:
             raise ValueError("Point wkb has unexpected length")
         if wkb[0] == 0:
@@ -122,10 +124,10 @@ class Point(NamedTuple):
         return Point(x, y)
 
 
-    def sql_value(self) -> WKTElement:
+    def sql_value(self) -> str:
         """ Create an SQL expression for the point.
         """
-        return WKTElement(f'POINT({self.x} {self.y})', srid=4326)
+        return f'POINT({self.x} {self.y})'
 
 
 
@@ -182,7 +184,7 @@ class Bbox:
     def sql_value(self) -> Any:
         """ Create an SQL expression for the box.
         """
-        return geoalchemy2.functions.ST_MakeEnvelope(*self.coords, 4326)
+        return sa.func.ST_MakeEnvelope(*self.coords, 4326)
 
 
     def contains(self, pt: Point) -> bool:
@@ -193,13 +195,16 @@ class Bbox:
 
 
     @staticmethod
-    def from_wkb(wkb: Optional[bytes]) -> 'Optional[Bbox]':
+    def from_wkb(wkb: Union[None, str, bytes]) -> 'Optional[Bbox]':
         """ Create a Bbox from a bounding box polygon as returned by
             the database. Return s None if the input value is None.
         """
         if wkb is None:
             return None
 
+        if isinstance(wkb, str):
+            wkb = unhexlify(wkb)
+
         if len(wkb) != 97:
             raise ValueError("WKB must be a bounding box polygon")
         if wkb.startswith(WKB_BBOX_HEADER_LE):