reintroduce cutoffs when searching for very frequent words

[nominatim.git] / nominatim / indexer / runners.py

diff --git a/nominatim/indexer/runners.py b/nominatim/indexer/runners.py
index 2bf9e51632a3ba84940755d005481aab9a9eed0b..bbadd282ec96c538baa7ff3926e75bd5bd6cbe69 100644 (file)
--- a/nominatim/indexer/runners.py
+++ b/nominatim/indexer/runners.py
@@ -1,38 +1,79 @@
+# SPDX-License-Identifier: GPL-2.0-only
+#
+# This file is part of Nominatim. (https://nominatim.org)
+#
+# Copyright (C) 2022 by the Nominatim developer community.
+# For a full list of authors see the git log.

 """
 Mix-ins that provide the actual commands for the indexer for various indexing
 tasks.
 """
 """
 Mix-ins that provide the actual commands for the indexer for various indexing
 tasks.
 """

+from typing import Any, List

 import functools
 
 import functools
 

+from psycopg2 import sql as pysql

 import psycopg2.extras
 
 import psycopg2.extras
 

+from nominatim.data.place_info import PlaceInfo
+from nominatim.tokenizer.base import AbstractAnalyzer
+from nominatim.db.async_connection import DBConnection
+from nominatim.typing import Query, DictCursorResult, DictCursorResults, Protocol
+

 # pylint: disable=C0111
 
 # pylint: disable=C0111
 

+def _mk_valuelist(template: str, num: int) -> pysql.Composed:
+    return pysql.SQL(',').join([pysql.SQL(template)] * num)
+
+def _analyze_place(place: DictCursorResult, analyzer: AbstractAnalyzer) -> psycopg2.extras.Json:
+    return psycopg2.extras.Json(analyzer.process_place(PlaceInfo(place)))
+
+
+class Runner(Protocol):
+    def name(self) -> str: ...
+    def sql_count_objects(self) -> Query: ...
+    def sql_get_objects(self) -> Query: ...
+    def get_place_details(self, worker: DBConnection,
+                          ids: DictCursorResults) -> DictCursorResults: ...
+    def index_places(self, worker: DBConnection, places: DictCursorResults) -> None: ...
+
+

 class AbstractPlacexRunner:
     """ Returns SQL commands for indexing of the placex table.
     """
 class AbstractPlacexRunner:
     """ Returns SQL commands for indexing of the placex table.
     """

-    SELECT_SQL = 'SELECT place_id, (placex_prepare_update(placex)).* FROM placex'
+    SELECT_SQL = pysql.SQL('SELECT place_id FROM placex ')
+    UPDATE_LINE = "(%s, %s::hstore, %s::hstore, %s::int, %s::jsonb)"

 
 

-    def __init__(self, rank, analyzer):
+    def __init__(self, rank: int, analyzer: AbstractAnalyzer) -> None:

         self.rank = rank
         self.analyzer = analyzer
 
 
         self.rank = rank
         self.analyzer = analyzer
 
 

-    @staticmethod

     @functools.lru_cache(maxsize=1)
     @functools.lru_cache(maxsize=1)

-    def _index_sql(num_places):
-        return """ UPDATE placex
-                   SET indexed_status = 0, address = v.addr, token_info = v.ti
-                   FROM (VALUES {}) as v(id, addr, ti)
-                   WHERE place_id = v.id
-               """.format(','.join(["(%s, %s::hstore, %s::json)"]  * num_places))
+    def _index_sql(self, num_places: int) -> pysql.Composed:
+        return pysql.SQL(
+            """ UPDATE placex
+                SET indexed_status = 0, address = v.addr, token_info = v.ti,
+                    name = v.name, linked_place_id = v.linked_place_id
+                FROM (VALUES {}) as v(id, name, addr, linked_place_id, ti)
+                WHERE place_id = v.id
+            """).format(_mk_valuelist(AbstractPlacexRunner.UPDATE_LINE, num_places))
+
+
+    def get_place_details(self, worker: DBConnection, ids: DictCursorResults) -> DictCursorResults:
+        worker.perform("""SELECT place_id, extra.*
+                          FROM placex, LATERAL placex_indexing_prepare(placex) as extra
+                          WHERE place_id IN %s""",
+                       (tuple((p[0] for p in ids)), ))

 
 

+        return []

 
 

-    def index_places(self, worker, places):
-        values = []
+
+    def index_places(self, worker: DBConnection, places: DictCursorResults) -> None:
+        values: List[Any] = []

         for place in places:
         for place in places:

-            values.extend((place[x] for x in ('place_id', 'address')))
-            values.append(psycopg2.extras.Json(self.analyzer.process_place(place)))
+            for field in ('place_id', 'name', 'address', 'linked_place_id'):
+                values.append(place[field])
+            values.append(_analyze_place(place, self.analyzer))

 
         worker.perform(self._index_sql(len(places)), values)
 
 
         worker.perform(self._index_sql(len(places)), values)
 


@@ -41,18 +82,19 @@ class RankRunner(AbstractPlacexRunner):
     """ Returns SQL commands for indexing one rank within the placex table.
     """
 
     """ Returns SQL commands for indexing one rank within the placex table.
     """
 

-    def name(self):
-        return "rank {}".format(self.rank)
+    def name(self) -> str:
+        return f"rank {self.rank}"

 
 

-    def sql_count_objects(self):
-        return """SELECT count(*) FROM placex
-                  WHERE rank_address = {} and indexed_status > 0
-               """.format(self.rank)
+    def sql_count_objects(self) -> pysql.Composed:
+        return pysql.SQL("""SELECT count(*) FROM placex
+                            WHERE rank_address = {} and indexed_status > 0
+                         """).format(pysql.Literal(self.rank))

 
 

-    def sql_get_objects(self):
-        return """{} WHERE indexed_status > 0 and rank_address = {}
-                     ORDER BY geometry_sector
-               """.format(self.SELECT_SQL, self.rank)
+    def sql_get_objects(self) -> pysql.Composed:
+        return self.SELECT_SQL + pysql.SQL(
+            """WHERE indexed_status > 0 and rank_address = {}
+               ORDER BY geometry_sector
+            """).format(pysql.Literal(self.rank))

 
 
 class BoundaryRunner(AbstractPlacexRunner):
 
 
 class BoundaryRunner(AbstractPlacexRunner):


@@ -60,21 +102,22 @@ class BoundaryRunner(AbstractPlacexRunner):
         of a certain rank.
     """
 
         of a certain rank.
     """
 

-    def name(self):
-        return "boundaries rank {}".format(self.rank)
+    def name(self) -> str:
+        return f"boundaries rank {self.rank}"

 
 

-    def sql_count_objects(self):
-        return """SELECT count(*) FROM placex
-                  WHERE indexed_status > 0
-                    AND rank_search = {}
-                    AND class = 'boundary' and type = 'administrative'
-               """.format(self.rank)
+    def sql_count_objects(self) -> pysql.Composed:
+        return pysql.SQL("""SELECT count(*) FROM placex
+                            WHERE indexed_status > 0
+                              AND rank_search = {}
+                              AND class = 'boundary' and type = 'administrative'
+                         """).format(pysql.Literal(self.rank))

 
 

-    def sql_get_objects(self):
-        return """{} WHERE indexed_status > 0 and rank_search = {}
-                           and class = 'boundary' and type = 'administrative'
-                     ORDER BY partition, admin_level
-               """.format(self.SELECT_SQL, self.rank)
+    def sql_get_objects(self) -> pysql.Composed:
+        return self.SELECT_SQL + pysql.SQL(
+            """WHERE indexed_status > 0 and rank_search = {}
+                     and class = 'boundary' and type = 'administrative'
+               ORDER BY partition, admin_level
+            """).format(pysql.Literal(self.rank))

 
 
 class InterpolationRunner:
 
 
 class InterpolationRunner:


@@ -82,48 +125,72 @@ class InterpolationRunner:
         location_property_osmline.
     """
 
         location_property_osmline.
     """
 

-    @staticmethod
-    def name():
+    def __init__(self, analyzer: AbstractAnalyzer) -> None:
+        self.analyzer = analyzer
+
+
+    def name(self) -> str:

         return "interpolation lines (location_property_osmline)"
 
         return "interpolation lines (location_property_osmline)"
 

-    @staticmethod
-    def sql_count_objects():
+    def sql_count_objects(self) -> str:

         return """SELECT count(*) FROM location_property_osmline
                   WHERE indexed_status > 0"""
 
         return """SELECT count(*) FROM location_property_osmline
                   WHERE indexed_status > 0"""
 

-    @staticmethod
-    def sql_get_objects():
-        return """SELECT place_id FROM location_property_osmline
+    def sql_get_objects(self) -> str:
+        return """SELECT place_id
+                  FROM location_property_osmline

                   WHERE indexed_status > 0
                   ORDER BY geometry_sector"""
 
                   WHERE indexed_status > 0
                   ORDER BY geometry_sector"""
 

-    @staticmethod
-    def index_places(worker, ids):
-        worker.perform(""" UPDATE location_property_osmline
-                           SET indexed_status = 0 WHERE place_id IN ({})
-                       """.format(','.join((str(i[0]) for i in ids))))
+
+    def get_place_details(self, worker: DBConnection, ids: DictCursorResults) -> DictCursorResults:
+        worker.perform("""SELECT place_id, get_interpolation_address(address, osm_id) as address
+                          FROM location_property_osmline WHERE place_id IN %s""",
+                       (tuple((p[0] for p in ids)), ))
+        return []

 
 
 
 

-class PostcodeRunner:
+    @functools.lru_cache(maxsize=1)
+    def _index_sql(self, num_places: int) -> pysql.Composed:
+        return pysql.SQL("""UPDATE location_property_osmline
+                            SET indexed_status = 0, address = v.addr, token_info = v.ti
+                            FROM (VALUES {}) as v(id, addr, ti)
+                            WHERE place_id = v.id
+                         """).format(_mk_valuelist("(%s, %s::hstore, %s::jsonb)", num_places))
+
+
+    def index_places(self, worker: DBConnection, places: DictCursorResults) -> None:
+        values: List[Any] = []
+        for place in places:
+            values.extend((place[x] for x in ('place_id', 'address')))
+            values.append(_analyze_place(place, self.analyzer))
+
+        worker.perform(self._index_sql(len(places)), values)
+
+
+
+class PostcodeRunner(Runner):

     """ Provides the SQL commands for indexing the location_postcode table.
     """
 
     """ Provides the SQL commands for indexing the location_postcode table.
     """
 

-    @staticmethod
-    def name():
+    def name(self) -> str:

         return "postcodes (location_postcode)"
 
         return "postcodes (location_postcode)"
 

-    @staticmethod
-    def sql_count_objects():
+
+    def sql_count_objects(self) -> str:

         return 'SELECT count(*) FROM location_postcode WHERE indexed_status > 0'
 
         return 'SELECT count(*) FROM location_postcode WHERE indexed_status > 0'
 

-    @staticmethod
-    def sql_get_objects():
+
+    def sql_get_objects(self) -> str:

         return """SELECT place_id FROM location_postcode
                   WHERE indexed_status > 0
                   ORDER BY country_code, postcode"""
 
         return """SELECT place_id FROM location_postcode
                   WHERE indexed_status > 0
                   ORDER BY country_code, postcode"""
 

-    @staticmethod
-    def index_places(worker, ids):
-        worker.perform(""" UPDATE location_postcode SET indexed_status = 0
-                           WHERE place_id IN ({})
-                       """.format(','.join((str(i[0]) for i in ids))))
+
+    def get_place_details(self, worker: DBConnection, ids: DictCursorResults) -> DictCursorResults:
+        return ids
+
+    def index_places(self, worker: DBConnection, places: DictCursorResults) -> None:
+        worker.perform(pysql.SQL("""UPDATE location_postcode SET indexed_status = 0
+                                    WHERE place_id IN ({})""")
+                       .format(pysql.SQL(',').join((pysql.Literal(i[0]) for i in places))))