rename documentation to 'Nominatim Manual'

[nominatim.git] / nominatim / db / sqlalchemy_schema.py

diff --git a/nominatim/db/sqlalchemy_schema.py b/nominatim/db/sqlalchemy_schema.py
index 17839168f21a85b555c3a6802e90aacfcca31f5a..2ca518cad06cc888113434ba3a168b5247602f49 100644 (file)
--- a/nominatim/db/sqlalchemy_schema.py
+++ b/nominatim/db/sqlalchemy_schema.py
@@ -10,10 +10,34 @@ SQLAlchemy definitions for all tables used by the frontend.
 from typing import Any
 
 import sqlalchemy as sa
-from geoalchemy2 import Geometry
-from sqlalchemy.dialects.postgresql import HSTORE, ARRAY, JSONB
+from sqlalchemy.dialects.postgresql import HSTORE, ARRAY, JSONB, array
 from sqlalchemy.dialects.sqlite import JSON as sqlite_json
 
+from nominatim.db.sqlalchemy_types import Geometry
+
+class PostgresTypes:
+    """ Type definitions for complex types as used in Postgres variants.
+    """
+    Composite = HSTORE
+    Json = JSONB
+    IntArray = ARRAY(sa.Integer()) #pylint: disable=invalid-name
+    to_array = array
+
+
+class SqliteTypes:
+    """ Type definitions for complex types as used in Postgres variants.
+    """
+    Composite = sqlite_json
+    Json = sqlite_json
+    IntArray = sqlite_json
+
+    @staticmethod
+    def to_array(arr: Any) -> Any:
+        """ Sqlite has no special conversion for arrays.
+        """
+        return arr
+
+
 #pylint: disable=too-many-instance-attributes
 class SearchTables:
     """ Data class that holds the tables of the Nominatim database.
@@ -21,13 +45,9 @@ class SearchTables:
 
     def __init__(self, meta: sa.MetaData, engine_name: str) -> None:
         if engine_name == 'postgresql':
-            Composite: Any = HSTORE
-            Json: Any = JSONB
-            IntArray: Any = ARRAY(sa.Integer()) #pylint: disable=invalid-name
+            self.types: Any = PostgresTypes
         elif engine_name == 'sqlite':
-            Composite = sqlite_json
-            Json = sqlite_json
-            IntArray = sqlite_json
+            self.types = SqliteTypes
         else:
             raise ValueError("Only 'postgresql' and 'sqlite' engines are supported.")
 
@@ -57,15 +77,15 @@ class SearchTables:
             sa.Column('class', sa.Text, nullable=False, key='class_'),
             sa.Column('type', sa.Text, nullable=False),
             sa.Column('admin_level', sa.SmallInteger),
-            sa.Column('name', Composite),
-            sa.Column('address', Composite),
-            sa.Column('extratags', Composite),
-            sa.Column('geometry', Geometry(srid=4326), nullable=False),
+            sa.Column('name', self.types.Composite),
+            sa.Column('address', self.types.Composite),
+            sa.Column('extratags', self.types.Composite),
+            sa.Column('geometry', Geometry, nullable=False),
             sa.Column('wikipedia', sa.Text),
             sa.Column('country_code', sa.String(2)),
             sa.Column('housenumber', sa.Text),
             sa.Column('postcode', sa.Text),
-            sa.Column('centroid', Geometry(srid=4326, spatial_index=False)))
+            sa.Column('centroid', Geometry))
 
         self.addressline = sa.Table('place_addressline', meta,
             sa.Column('place_id', sa.BigInteger, index=True),
@@ -84,7 +104,7 @@ class SearchTables:
             sa.Column('indexed_date', sa.DateTime),
             sa.Column('country_code', sa.String(2)),
             sa.Column('postcode', sa.Text, index=True),
-            sa.Column('geometry', Geometry(srid=4326)))
+            sa.Column('geometry', Geometry))
 
         self.osmline = sa.Table('location_property_osmline', meta,
             sa.Column('place_id', sa.BigInteger, nullable=False, unique=True),
@@ -96,29 +116,22 @@ class SearchTables:
             sa.Column('step', sa.SmallInteger),
             sa.Column('partition', sa.SmallInteger),
             sa.Column('indexed_status', sa.SmallInteger),
-            sa.Column('linegeo', Geometry(srid=4326)),
-            sa.Column('address', Composite),
+            sa.Column('linegeo', Geometry),
+            sa.Column('address', self.types.Composite),
             sa.Column('postcode', sa.Text),
             sa.Column('country_code', sa.String(2)))
 
-        self.word = sa.Table('word', meta,
-            sa.Column('word_id', sa.Integer),
-            sa.Column('word_token', sa.Text, nullable=False),
-            sa.Column('type', sa.Text, nullable=False),
-            sa.Column('word', sa.Text),
-            sa.Column('info', Json))
-
         self.country_name = sa.Table('country_name', meta,
             sa.Column('country_code', sa.String(2)),
-            sa.Column('name', Composite),
-            sa.Column('derived_name', Composite),
+            sa.Column('name', self.types.Composite),
+            sa.Column('derived_name', self.types.Composite),
             sa.Column('country_default_language_code', sa.Text),
             sa.Column('partition', sa.Integer))
 
         self.country_grid = sa.Table('country_osm_grid', meta,
             sa.Column('country_code', sa.String(2)),
             sa.Column('area', sa.Float),
-            sa.Column('geometry', Geometry(srid=4326)))
+            sa.Column('geometry', Geometry))
 
         # The following tables are not necessarily present.
         self.search_name = sa.Table('search_name', meta,
@@ -126,10 +139,10 @@ class SearchTables:
             sa.Column('importance', sa.Float),
             sa.Column('search_rank', sa.SmallInteger),
             sa.Column('address_rank', sa.SmallInteger),
-            sa.Column('name_vector', IntArray, index=True),
-            sa.Column('nameaddress_vector', IntArray, index=True),
+            sa.Column('name_vector', self.types.IntArray, index=True),
+            sa.Column('nameaddress_vector', self.types.IntArray, index=True),
             sa.Column('country_code', sa.String(2)),
-            sa.Column('centroid', Geometry(srid=4326)))
+            sa.Column('centroid', Geometry))
 
         self.tiger = sa.Table('location_property_tiger', meta,
             sa.Column('place_id', sa.BigInteger),
@@ -138,5 +151,5 @@ class SearchTables:
             sa.Column('endnumber', sa.Integer),
             sa.Column('step', sa.SmallInteger),
             sa.Column('partition', sa.SmallInteger),
-            sa.Column('linegeo', Geometry(srid=4326, spatial_index=False)),
+            sa.Column('linegeo', Geometry),
             sa.Column('postcode', sa.Text))