X-Git-Url: https://git.openstreetmap.org./nominatim.git/blobdiff_plain/ce17b0eecaa7add29e4eb04e06b2580daa656bf2..ac5ef6470161994850f0088b37f1c441b76bd99e:/nominatim/api/search/db_search_fields.py

diff --git a/nominatim/api/search/db_search_fields.py b/nominatim/api/search/db_search_fields.py
index 13f1c56e..612e9059 100644
--- a/nominatim/api/search/db_search_fields.py
+++ b/nominatim/api/search/db_search_fields.py
@@ -211,3 +211,35 @@ class SearchData:
                 self.rankings.append(ranking)
             else:
                 self.penalty += ranking.default
+
+
+def lookup_by_names(name_tokens: List[int], addr_tokens: List[int]) -> List[FieldLookup]:
+    """ Create a lookup list where name tokens are looked up via index
+        and potential address tokens are used to restrict the search further.
+    """
+    lookup = [FieldLookup('name_vector', name_tokens, 'lookup_all')]
+    if addr_tokens:
+        lookup.append(FieldLookup('nameaddress_vector', addr_tokens, 'restrict'))
+
+    return lookup
+
+
+def lookup_by_any_name(name_tokens: List[int], addr_tokens: List[int],
+                       lookup_type: str) -> List[FieldLookup]:
+    """ Create a lookup list where name tokens are looked up via index
+        and only one of the name tokens must be present.
+        Potential address tokens are used to restrict the search further.
+    """
+    lookup = [FieldLookup('name_vector', name_tokens, 'lookup_any')]
+    if addr_tokens:
+        lookup.append(FieldLookup('nameaddress_vector', addr_tokens, lookup_type))
+
+    return lookup
+
+
+def lookup_by_addr(name_tokens: List[int], addr_tokens: List[int]) -> List[FieldLookup]:
+    """ Create a lookup list where address tokens are looked up via index
+        and the name tokens are only used to restrict the search further.
+    """
+    return [FieldLookup('name_vector', name_tokens, 'restrict'),
+            FieldLookup('nameaddress_vector', addr_tokens, 'lookup_all')]