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move filling of postcode table to python

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The Python code now takes care of reading postcodes from placex,
enhancing them with potentially existing external postcodes and
updating location_postcodes accordingly. The initial setup and
updates use exactly the same function.

External postcode handling has been generalized. External postcodes
for any country are now accepted. The format of the external postcode
file has changed. We now expect CSV, potentially gzipped. The
postcodes are no longer saved in the database.
This commit is contained in:
Sarah Hoffmann
2021-05-12 19:57:48 +02:00
parent cae0cf3546
commit a4aba23a83
8 changed files with 264 additions and 166 deletions
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6
nominatim/tools/refresh.py
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@@ -13,12 +13,6 @@ from nominatim.version import NOMINATIM_VERSION
LOG = logging.getLogger()
def update_postcodes(dsn, sql_dir):
""" Recalculate postcode centroids and add, remove and update entries in the
location_postcode table. `conn` is an opne connection to the database.
"""
execute_file(dsn, sql_dir / 'update-postcodes.sql')
def recompute_word_counts(dsn, sql_dir):
""" Compute the frequency of full-word search terms.