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Switch to SQLAlchemy Core for OSM objects

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osm2pgsql creates tables without primary keys. Some OSM objects are
split into multiple table rows to help with PostGIS index performance.

Adjust the code to be aware of this.

Also add name matching for streets.
This commit is contained in:
Edward Betts 2021-07-22 14:47:38 +02:00
parent 8b7ab45c73
commit 867e77ab7b
3 changed files with 292 additions and 135 deletions
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27
matcher/planet.py Normal file
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from sqlalchemy import Table, Column, Integer, String, Float, MetaData
from sqlalchemy.dialects import postgresql
from geoalchemy2 import Geometry
metadata = MetaData()
point = Table("planet_osm_point", metadata,
Column("osm_id", Integer),
Column("name", String),
Column("tags", postgresql.HSTORE),
Column("way", Geometry("GEOMETRY", srid=4326, spatial_index=True), nullable=False),
)
line = Table("planet_osm_line", metadata,
Column("osm_id", Integer),
Column("name", String),
Column("tags", postgresql.HSTORE),
Column("way", Geometry("GEOMETRY", srid=4326, spatial_index=True), nullable=False),
)
polygon = Table("planet_osm_polygon", metadata,
Column("osm_id", Integer),
Column("name", String),
Column("tags", postgresql.HSTORE),
Column("way", Geometry("GEOMETRY", srid=4326, spatial_index=True), nullable=False),
Column("way_area", Float),
)