return True
+ def _get_assignments_postcode(self, base: TokenAssignment,
+ query_len: int) -> Iterator[TokenAssignment]:
+ """ Yield possible assignments of Postcode searches with an
+ address component.
+ """
+ assert base.postcode is not None
+
+ if (base.postcode.start == 0 and self.direction != -1)\
+ or (base.postcode.end == query_len and self.direction != 1):
+ log().comment('postcode search')
+ # <address>,<postcode> should give preference to address search
+ if base.postcode.start == 0:
+ penalty = self.penalty
+ self.direction = -1 # name searches are only possbile backwards
+ else:
+ penalty = self.penalty + 0.1
+ self.direction = 1 # name searches are only possbile forwards
+ yield dataclasses.replace(base, penalty=penalty)
+
+
+ def _get_assignments_address_forward(self, base: TokenAssignment,
+ query: qmod.QueryStruct) -> Iterator[TokenAssignment]:
+ """ Yield possible assignments of address searches with
+ left-to-right reading.
+ """
+ first = base.address[0]
+
+ log().comment('first word = name')
+ yield dataclasses.replace(base, penalty=self.penalty,
+ name=first, address=base.address[1:])
+
+ # To paraphrase:
+ # * if another name term comes after the first one and before the
+ # housenumber
+ # * a qualifier comes after the name
+ # * the containing phrase is strictly typed
+ if (base.housenumber and first.end < base.housenumber.start)\
+ or (base.qualifier and base.qualifier > first)\
+ or (query.nodes[first.start].ptype != qmod.PhraseType.NONE):
+ return
+
+ penalty = self.penalty
+
+ # Penalty for:
+ # * <name>, <street>, <housenumber> , ...
+ # * queries that are comma-separated
+ if (base.housenumber and base.housenumber > first) or len(query.source) > 1:
+ penalty += 0.25
+
+ for i in range(first.start + 1, first.end):
+ name, addr = first.split(i)
+ log().comment(f'split first word = name ({i - first.start})')
+ yield dataclasses.replace(base, name=name, address=[addr] + base.address[1:],
+ penalty=penalty + PENALTY_TOKENCHANGE[query.nodes[i].btype])
+
+
+ def _get_assignments_address_backward(self, base: TokenAssignment,
+ query: qmod.QueryStruct) -> Iterator[TokenAssignment]:
+ """ Yield possible assignments of address searches with
+ right-to-left reading.
+ """
+ last = base.address[-1]
+
+ if self.direction == -1 or len(base.address) > 1:
+ log().comment('last word = name')
+ yield dataclasses.replace(base, penalty=self.penalty,
+ name=last, address=base.address[:-1])
+
+ # To paraphrase:
+ # * if another name term comes before the last one and after the
+ # housenumber
+ # * a qualifier comes before the name
+ # * the containing phrase is strictly typed
+ if (base.housenumber and last.start > base.housenumber.end)\
+ or (base.qualifier and base.qualifier < last)\
+ or (query.nodes[last.start].ptype != qmod.PhraseType.NONE):
+ return
+
+ penalty = self.penalty
+ if base.housenumber and base.housenumber < last:
+ penalty += 0.4
+ if len(query.source) > 1:
+ penalty += 0.25
+
+ for i in range(last.start + 1, last.end):
+ addr, name = last.split(i)
+ log().comment(f'split last word = name ({i - last.start})')
+ yield dataclasses.replace(base, name=name, address=base.address[:-1] + [addr],
+ penalty=penalty + PENALTY_TOKENCHANGE[query.nodes[i].btype])
+
+
def get_assignments(self, query: qmod.QueryStruct) -> Iterator[TokenAssignment]:
""" Yield possible assignments for the current sequence.
"""
base = TokenAssignment.from_ranges(self.seq)
+ num_addr_tokens = sum(t.end - t.start for t in base.address)
+ if num_addr_tokens > 50:
+ return
+
# Postcode search (postcode-only search is covered in next case)
if base.postcode is not None and base.address:
- if (base.postcode.start == 0 and self.direction != -1)\
- or (base.postcode.end == query.num_token_slots() and self.direction != 1):
- log().comment('postcode search')
- yield dataclasses.replace(base, penalty=self.penalty)
+ yield from self._get_assignments_postcode(base, query.num_token_slots())
# Postcode or country-only search
if not base.address:
log().comment('postcode/country search')
yield dataclasses.replace(base, penalty=self.penalty)
else:
- # Use entire first word as name
- if self.direction != -1:
- log().comment('first word = name')
- yield dataclasses.replace(base, name=base.address[0],
- penalty=self.penalty,
- address=base.address[1:])
-
- # Use entire last word as name
- if self.direction == -1 or (self.direction == 0 and len(base.address) > 1):
- log().comment('last word = name')
- yield dataclasses.replace(base, name=base.address[-1],
- penalty=self.penalty,
- address=base.address[:-1])
-
- # Use beginning of first word as name
+ # <postcode>,<address> should give preference to postcode search
+ if base.postcode and base.postcode.start == 0:
+ self.penalty += 0.1
+
+ # Right-to-left reading of the address
if self.direction != -1:
- first = base.address[0]
- if (not base.housenumber or first.end >= base.housenumber.start)\
- and (not base.qualifier or first.start >= base.qualifier.end):
- for i in range(first.start + 1, first.end):
- name, addr = first.split(i)
- penalty = self.penalty + PENALTY_TOKENCHANGE[query.nodes[i].btype]
- log().comment(f'split first word = name ({i - first.start})')
- yield dataclasses.replace(base, name=name, penalty=penalty,
- address=[addr] + base.address[1:])
-
- # Use end of last word as name
+ yield from self._get_assignments_address_forward(base, query)
+
+ # Left-to-right reading of the address
if self.direction != 1:
- last = base.address[-1]
- if (not base.housenumber or last.start <= base.housenumber.end)\
- and (not base.qualifier or last.end <= base.qualifier.start):
- for i in range(last.start + 1, last.end):
- addr, name = last.split(i)
- penalty = self.penalty + PENALTY_TOKENCHANGE[query.nodes[i].btype]
- log().comment(f'split last word = name ({i - last.start})')
- yield dataclasses.replace(base, name=name, penalty=penalty,
- address=base.address[:-1] + [addr])
+ yield from self._get_assignments_address_backward(base, query)
+ # variant for special housenumber searches
+ if base.housenumber:
+ yield dataclasses.replace(base, penalty=self.penalty)
def yield_token_assignments(query: qmod.QueryStruct) -> Iterator[TokenAssignment]:
projects / nominatim.git / blobdiff