Sarah Hoffmann [Wed, 12 May 2021 17:57:48 +0000 (19:57 +0200)]
move filling of postcode table to python
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.
Sarah Hoffmann [Wed, 5 May 2021 19:16:55 +0000 (21:16 +0200)]
add missing transliterations
The ICU library only offers transliterations for a limited set of
script. Add transliterations for missing scripts from the PostgreSQL
module. These means that the same selection of scripts is supported
as with the old module.
Sarah Hoffmann [Wed, 5 May 2021 08:00:34 +0000 (10:00 +0200)]
enable BDD tests for different tokenizers
The tokenizer to be used can be choosen with -DTOKENIZER.
Adapt all tests, so that they work with legacy_icu tokenizer.
Move lookup in word table to a function in the tokenizer.
Special phrases are temporarily imported from the wiki until
we have an implementation that can import from file. TIGER
tests do not work yet.
Sarah Hoffmann [Fri, 30 Apr 2021 14:17:28 +0000 (16:17 +0200)]
indexer: fetch extra place data asynchronously
The indexer now fetches any extra data besides the place_id
asynchronously while processing the places from the last batch.
This also means that more places are now fetched at once.
Sarah Hoffmann [Wed, 28 Apr 2021 08:59:07 +0000 (10:59 +0200)]
boilerplate for PHP code of tokenizer
This adds an installation step for PHP code for the tokenizer. The
PHP code is split in two parts. The updateable code is found in
lib-php. The tokenizer installs an additional script in the
project directory which then includes the code from lib-php and
defines all settings that are static to the database. The website
code then always includes the PHP from the project directory.
Sarah Hoffmann [Tue, 27 Apr 2021 19:50:35 +0000 (21:50 +0200)]
move amenity creation to tokenizer
The BDD tests still use the old-style amenity creation scripts
because we don't have simple means to import a hand-crafted
test file of special phrases right now.
Sarah Hoffmann [Sun, 25 Apr 2021 09:47:29 +0000 (11:47 +0200)]
move houseunumber handling to tokenizer
Normalization and token computation are now done in the tokenizer.
The tokenizer keeps a cache to the hundred most used house numbers
to keep the numbers of calls to the database low.
Sarah Hoffmann [Sat, 24 Apr 2021 20:35:46 +0000 (22:35 +0200)]
introduce name analyzer
The name analyzer is the actual work horse of the tokenizer. It
is instantiated on a thread-base and provides all functions for
analysing names and queries.
Sarah Hoffmann [Fri, 23 Apr 2021 14:15:00 +0000 (16:15 +0200)]
add extra column for tokenizer
Add a jsonb column to the placex and location_property_osmline tables
which can be used by the installed tokenizer as required. No other
part of the software will use or otherwise rely on this column.
Sarah Hoffmann [Fri, 23 Apr 2021 13:49:38 +0000 (15:49 +0200)]
introduce external processing in indexer
Indexing is now split into three parts: first a preparation step
that collects the necessary information from the database and
returns it to Python. In a second step the data is transformed
within Python as necessary and then returned to the database
through the usual UPDATE which now not only sets the indexed_status
but also other fields. The third step comprises the address
computation which is still done inside the update trigger in
the database.
The second processing step doesn't do anything useful yet.
Sarah Hoffmann [Thu, 22 Apr 2021 20:47:34 +0000 (22:47 +0200)]
move word table and normalisation SQL into tokenizer
Creating and populating the word table is now the responsibility
of the tokenizer.
The get_maxwordfreq() function has been replaced with a
simple template parameter to the SQL during function installation.
The number is taken from the parameter list in the database to
ensure that it is not changed after installation.
Sarah Hoffmann [Wed, 21 Apr 2021 13:38:52 +0000 (15:38 +0200)]
add migration for configurable tokenizer
Adds a migration that initialises a legacy tokenizer for
an existing database. The migration is not active yet as
it will need completion when more functionality is added
to the legacy tokenizer.
Sarah Hoffmann [Wed, 21 Apr 2021 07:57:17 +0000 (09:57 +0200)]
introduce tokenizer modules
This adds the boilerplate for selecting configurable tokenizers.
A tokenizer can be chosen at import time and will then install
itself such that it is fixed for the given database import even
when the software itself is updated.
The legacy tokenizer implements Nominatim's traditional algorithms.
Sarah Hoffmann [Fri, 30 Apr 2021 08:08:29 +0000 (10:08 +0200)]
remove support for AUX housenumber tables
These tables have never been actively maintained and the code is
completely untested. With the upcomming changes, it is unlikely
that the code remains usable.
This removes the aux tables and all code that references them.
Sarah Hoffmann [Mon, 19 Apr 2021 14:54:22 +0000 (16:54 +0200)]
simplify token precomputation
Rename function to reflect that it is only used for precomputation.
The token IDs are not really needed, so don't bother to compute
the array of tokens.