when a country is in the results, restrict further searches to places

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

diff --git a/nominatim/db/sqlalchemy_functions.py b/nominatim/db/sqlalchemy_functions.py
index 8b1967381cf0a89422ab0d6efae26b2ae611ac75..f576d32f06a175191823e2375dfb29a57630966b 100644 (file)
--- a/nominatim/db/sqlalchemy_functions.py
+++ b/nominatim/db/sqlalchemy_functions.py
@@ -55,7 +55,7 @@ class IntersectsReverseDistance(sa.sql.functions.GenericFunction[Any]):
     inherit_cache = True
 
     def __init__(self, table: sa.Table, geom: SaColumn) -> None:
-        super().__init__(table.c.geometry, # type: ignore[no-untyped-call]
+        super().__init__(table.c.geometry,
                          table.c.rank_search, geom)
         self.tablename = table.name
 
@@ -117,24 +117,12 @@ def sqlite_is_below_reverse_distance(element: IsBelowReverseDistance,
                                                   compiler.process(rank, **kw))
 
 
-def select_index_placex_geometry_reverse_lookupplacenode(table: str) -> 'sa.TextClause':
-    """ Create an expression with the necessary conditions over a placex
-        table that the index 'idx_placex_geometry_reverse_lookupPlaceNode'
-        can be used.
-    """
-    return sa.text(f"{table}.rank_address between 4 and 25"
-                   f" AND {table}.type != 'postcode'"
-                   f" AND {table}.name is not null"
-                   f" AND {table}.linked_place_id is null"
-                   f" AND {table}.osm_type = 'N'")
-
-
 class IsAddressPoint(sa.sql.functions.GenericFunction[Any]):
     name = 'IsAddressPoint'
     inherit_cache = True
 
     def __init__(self, table: sa.Table) -> None:
-        super().__init__(table.c.rank_address, # type: ignore[no-untyped-call]
+        super().__init__(table.c.rank_address,
                          table.c.housenumber, table.c.name)
 
 
@@ -200,6 +188,7 @@ def sqlite_json_array_each(element: JsonArrayEach, compiler: 'sa.Compiled', **kw
     return "json_each(%s)" % compiler.process(element.clauses, **kw)
 
 
+
 class Greatest(sa.sql.functions.GenericFunction[Any]):
     """ Function to compute maximum of all its input parameters.
     """
@@ -210,3 +199,23 @@ class Greatest(sa.sql.functions.GenericFunction[Any]):
 @compiles(Greatest, 'sqlite') # type: ignore[no-untyped-call, misc]
 def sqlite_greatest(element: Greatest, compiler: 'sa.Compiled', **kw: Any) -> str:
     return "max(%s)" % compiler.process(element.clauses, **kw)
+
+
+
+class RegexpWord(sa.sql.functions.GenericFunction[Any]):
+    """ Check if a full word is in a given string.
+    """
+    name = 'RegexpWord'
+    inherit_cache = True
+
+
+@compiles(RegexpWord, 'postgresql') # type: ignore[no-untyped-call, misc]
+def postgres_regexp_nocase(element: RegexpWord, compiler: 'sa.Compiled', **kw: Any) -> str:
+    arg1, arg2 = list(element.clauses)
+    return "%s ~* ('\\m(' || %s  || ')\\M')::text" % (compiler.process(arg2, **kw), compiler.process(arg1, **kw))
+
+
+@compiles(RegexpWord, 'sqlite') # type: ignore[no-untyped-call, misc]
+def sqlite_regexp_nocase(element: RegexpWord, compiler: 'sa.Compiled', **kw: Any) -> str:
+    arg1, arg2 = list(element.clauses)
+    return "regexp('\\b(' || %s  || ')\\b', %s)" % (compiler.process(arg1, **kw), compiler.process(arg2, **kw))