factor out SQL for filtering by location

[nominatim.git] / nominatim / api / search / query.py

diff --git a/nominatim/api/search/query.py b/nominatim/api/search/query.py
index 5d75eb0fbe98c492638bbb174b5db930490f6788..ad1b69ef521dfd303ae1d5b95aa8629859feb10b 100644 (file)
--- a/nominatim/api/search/query.py
+++ b/nominatim/api/search/query.py
@@ -46,7 +46,7 @@ class TokenType(enum.Enum):
     """ Country name or reference. """
     QUALIFIER = enum.auto()
     """ Special term used together with name (e.g. _Hotel_ Bellevue). """
-    CATEGORY = enum.auto()
+    NEAR_ITEM = enum.auto()
     """ Special term used as searchable object(e.g. supermarket in ...). """
 
 
@@ -70,14 +70,16 @@ class PhraseType(enum.Enum):
     COUNTRY = enum.auto()
     """ Contains the country name or code. """
 
-    def compatible_with(self, ttype: TokenType) -> bool:
+    def compatible_with(self, ttype: TokenType,
+                        is_full_phrase: bool) -> bool:
         """ Check if the given token type can be used with the phrase type.
         """
         if self == PhraseType.NONE:
-            return True
+            return not is_full_phrase or ttype != TokenType.QUALIFIER
         if self == PhraseType.AMENITY:
-            return ttype in (TokenType.WORD, TokenType.PARTIAL,
-                             TokenType.QUALIFIER, TokenType.CATEGORY)
+            return ttype in (TokenType.WORD, TokenType.PARTIAL)\
+                   or (is_full_phrase and ttype == TokenType.NEAR_ITEM)\
+                   or (not is_full_phrase and ttype == TokenType.QUALIFIER)
         if self == PhraseType.STREET:
             return ttype in (TokenType.WORD, TokenType.PARTIAL, TokenType.HOUSENUMBER)
         if self == PhraseType.POSTCODE:
@@ -244,7 +246,9 @@ class QueryStruct:
             be added to, then the token is silently dropped.
         """
         snode = self.nodes[trange.start]
-        if snode.ptype.compatible_with(ttype):
+        full_phrase = snode.btype in (BreakType.START, BreakType.PHRASE)\
+                      and self.nodes[trange.end].btype in (BreakType.PHRASE, BreakType.END)
+        if snode.ptype.compatible_with(ttype, full_phrase):
             tlist = snode.get_tokens(trange.end, ttype)
             if tlist is None:
                 snode.starting.append(TokenList(trange.end, ttype, [token]))