block search queries with too many tokens

diff --git a/nominatim/api/search/token_assignment.py b/nominatim/api/search/token_assignment.py
index c05c271a3d411dc23d084dec8266a70241a3651a..7f75505c4bfec37464fabb572281643176096477 100644 (file)
--- a/nominatim/api/search/token_assignment.py
+++ b/nominatim/api/search/token_assignment.py
@@ -265,6 +265,10 @@ class _TokenSequence:
         """
         base = TokenAssignment.from_ranges(self.seq)
 
+        num_addr_tokens = sum(t.end - t.start for t in base.address)
+        if num_addr_tokens > 50:
+            return
+
         # Postcode search (postcode-only search is covered in next case)
         if base.postcode is not None and base.address:
             if (base.postcode.start == 0 and self.direction != -1)\