Index and return entrance coordinates for indexed locations

src/nominatim_db/tools/migration.py

@@ -15,6 +15,7 @@ from ..config import Configuration
 from ..db import properties
 from ..db.connection import connect, Connection, \
                             table_exists, register_hstore
+from ..db.sql_preprocessor import SQLPreprocessor
 from ..version import NominatimVersion, NOMINATIM_VERSION, parse_version
 from ..tokenizer import factory as tokenizer_factory
 from . import refresh
@@ -115,3 +116,28 @@ def create_postcode_parent_index(conn: Connection, **_: Any) -> None:
             cur.execute("""CREATE INDEX IF NOT EXISTS
                              idx_location_postcode_parent_place_id
                              ON location_postcode USING BTREE (parent_place_id)""")
+
+
+@_migration(5, 1, 99, 0)
+def create_place_entrance_table(conn: Connection, config: Configuration, **_: Any) -> None:
+    """ Add the place_entrance table to store entrance nodes
+    """
+    sqlp = SQLPreprocessor(conn, config)
+    sqlp.run_string(conn, """
+-- Table to store location of entrance nodes
+CREATE TABLE IF NOT EXISTS place_entrance (
+  place_id BIGINT NOT NULL,
+  osm_node_id BIGINT NOT NULL,
+  type TEXT NOT NULL,
+  geometry GEOMETRY(Point, 4326) NOT NULL
+  );
+CREATE UNIQUE INDEX IF NOT EXISTS idx_place_entrance_id
+  ON place_entrance USING BTREE (place_id, osm_node_id) {{db.tablespace.search_index}};
+GRANT SELECT ON place_entrance TO "{{config.DATABASE_WEBUSER}}" ;
+
+-- Create an index on the place table for lookups to populate the entrance
+-- table
+CREATE INDEX IF NOT EXISTS idx_place_entrance_lookup ON place
+  USING BTREE (osm_id)
+  WHERE class IN ('routing:entrance', 'entrance');
+    """)

src/nominatim_db/version.py

@@ -55,7 +55,7 @@ def parse_version(version: str) -> NominatimVersion:
     return NominatimVersion(*[int(x) for x in parts[:2] + parts[2].split('-')])
 
 
-NOMINATIM_VERSION = parse_version('5.1.0-0')
+NOMINATIM_VERSION = parse_version('5.1.99-0')
 
 POSTGRESQL_REQUIRED_VERSION = (12, 0)
 POSTGIS_REQUIRED_VERSION = (3, 0)