X-Git-Url: https://git.openstreetmap.org./nominatim.git/blobdiff_plain/2a94bfc703678eb1ee9aef55b3ae3610c9669aac..13e7398566909044348e57163cbd87a2095e8e80:/nominatim/tokenizer/base.py

diff --git a/nominatim/tokenizer/base.py b/nominatim/tokenizer/base.py
index 02bc312f..94fac1fc 100644
--- a/nominatim/tokenizer/base.py
+++ b/nominatim/tokenizer/base.py
@@ -205,6 +205,16 @@ class AbstractTokenizer(ABC):
         pass
 
 
+    @abstractmethod
+    def update_statistics(self) -> None:
+        """ Recompute any tokenizer statistics necessary for efficient lookup.
+            This function is meant to be called from time to time by the user
+            to improve performance. However, the tokenizer must not depend on
+            it to be called in order to work.
+        """
+        pass
+
+
     @abstractmethod
     def name_analyzer(self) -> AbstractAnalyzer:
         """ Create a new analyzer for tokenizing names and queries