X-Git-Url: https://git.openstreetmap.org./nominatim.git/blobdiff_plain/5e5addcdbf20022b3fd76dc8c2275a1eecf12a3c..4e94e661b3657f8ab4e6d839729ef4346438b9f5:/nominatim/tokenizer/base.py

diff --git a/nominatim/tokenizer/base.py b/nominatim/tokenizer/base.py
index e126507b..94fac1fc 100644
--- a/nominatim/tokenizer/base.py
+++ b/nominatim/tokenizer/base.py
@@ -149,11 +149,14 @@ class AbstractTokenizer(ABC):
 
 
     @abstractmethod
-    def init_from_project(self) -> None:
+    def init_from_project(self, config: Configuration) -> None:
         """ Initialise the tokenizer from an existing database setup.
 
             The function should load all previously saved configuration from
             the project directory and/or the property table.
+
+            Arguments:
+              config: Read-only object with configuration options.
         """
         pass
 
@@ -187,16 +190,27 @@ class AbstractTokenizer(ABC):
 
 
     @abstractmethod
-    def check_database(self) -> str:
+    def check_database(self, config: Configuration) -> str:
         """ Check that the database is set up correctly and ready for being
             queried.
 
+            Arguments:
+              config: Read-only object with configuration options.
+
             Returns:
               If an issue was found, return an error message with the
               description of the issue as well as hints for the user on
-              how to resolve the issue.
+              how to resolve the issue. If everything is okay, return `None`.
+        """
+        pass
 
-              Return `None`, if no issue was found.
+
+    @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