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add lookup of postcdoe data

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This commit is contained in:
Sarah Hoffmann
2023-02-02 16:22:18 +01:00
parent 70f6f9a711
commit 1924beeb20
4 changed files with 151 additions and 2 deletions
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31
nominatim/api/lookup.py
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@@ -95,8 +95,8 @@ async def find_in_osmline(conn: SearchConnection, place: ntyp.PlaceRef,
async def find_in_tiger(conn: SearchConnection, place: ntyp.PlaceRef,
details: ntyp.LookupDetails) -> Optional[SaRow]:
""" Search for the given place in table of Tiger addresses and return the
base information.
""" Search for the given place in the table of Tiger addresses and return
the base information. Only lookup by place ID is supported.
"""
t = conn.t.tiger
sql = sa.select(t.c.place_id, t.c.parent_place_id,
@@ -114,6 +114,27 @@ async def find_in_tiger(conn: SearchConnection, place: ntyp.PlaceRef,
return (await conn.execute(sql)).one_or_none()
async def find_in_postcode(conn: SearchConnection, place: ntyp.PlaceRef,
details: ntyp.LookupDetails) -> Optional[SaRow]:
""" Search for the given place in the postcode table and return the
base information. Only lookup by place ID is supported.
"""
t = conn.t.postcode
sql = sa.select(t.c.place_id, t.c.parent_place_id,
t.c.rank_search, t.c.rank_address,
t.c.indexed_date, t.c.postcode, t.c.country_code,
sa.func.ST_X(t.c.geometry).label('x'),
sa.func.ST_Y(t.c.geometry).label('y'),
_select_column_geometry(t.c.geometry, details.geometry_output))
if isinstance(place, ntyp.PlaceID):
sql = sql.where(t.c.place_id == place.place_id)
else:
return None
return (await conn.execute(sql)).one_or_none()
async def get_place_by_id(conn: SearchConnection, place: ntyp.PlaceRef,
details: ntyp.LookupDetails) -> Optional[nres.SearchResult]:
""" Retrieve a place with additional details from the database.
@@ -133,6 +154,12 @@ async def get_place_by_id(conn: SearchConnection, place: ntyp.PlaceRef,
await nres.add_result_details(conn, result, details)
return result
row = await find_in_postcode(conn, place, details)
if row is not None:
result = nres.create_from_postcode_row(row)
await nres.add_result_details(conn, result, details)
return result
row = await find_in_tiger(conn, place, details)
if row is not None:
result = nres.create_from_tiger_row(row)

17
nominatim/api/results.py
View File

@@ -203,6 +203,23 @@ def create_from_tiger_row(row: SaRow) -> SearchResult:
geometry=_filter_geometries(row))
def create_from_postcode_row(row: SaRow) -> SearchResult:
""" Construct a new SearchResult and add the data from the result row
from the postcode centroid table.
"""
return SearchResult(source_table=SourceTable.POSTCODE,
place_id=row.place_id,
parent_place_id=row.parent_place_id,
category=('place', 'postcode'),
names={'ref': row.postcode},
rank_search=row.rank_search,
rank_address=row.rank_address,
country_code=row.country_code,
centroid=Point(row.x, row.y),
indexed_date=row.indexed_date,
geometry=_filter_geometries(row))
async def add_result_details(conn: SearchConnection, result: SearchResult,
details: LookupDetails) -> None:
""" Retrieve more details from the database according to the