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disallow special housenumber search with a single frequent partial

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Sarah Hoffmann
2023-07-20 18:05:54 +02:00
parent 927d2cc824
commit 587698a6f3
1 changed files with 14 additions and 6 deletions
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20
nominatim/api/search/db_search_builder.py
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@@ -155,13 +155,21 @@ class SearchBuilder:
""" Build a simple address search for special entries where the """ Build a simple address search for special entries where the
housenumber is the main name token. housenumber is the main name token.
""" """
partial_tokens: List[int] = [] sdata.lookups = [dbf.FieldLookup('name_vector', [t.token for t in hnrs], 'lookup_any')]
for trange in address:
partial_tokens.extend(t.token for t in self.query.get_partials_list(trange)) partials = [t for trange in address
for t in self.query.get_partials_list(trange)]
if len(partials) != 1 or partials[0].count < 10000:
sdata.lookups.append(dbf.FieldLookup('nameaddress_vector',
[t.token for t in partials], 'lookup_all'))
else:
sdata.lookups.append(
dbf.FieldLookup('nameaddress_vector',
[t.token for t
in self.query.get_tokens(address[0], TokenType.WORD)],
'lookup_any'))
sdata.lookups = [dbf.FieldLookup('name_vector', [t.token for t in hnrs], 'lookup_any'),
dbf.FieldLookup('nameaddress_vector', partial_tokens, 'lookup_all')
]
sdata.housenumbers = dbf.WeightedStrings([], []) sdata.housenumbers = dbf.WeightedStrings([], [])
yield dbs.PlaceSearch(0.05, sdata, sum(t.count for t in hnrs)) yield dbs.PlaceSearch(0.05, sdata, sum(t.count for t in hnrs))