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File Name : apsw_ext.py

"""
Peewee integration with APSW, "another python sqlite wrapper".

Project page: https://rogerbinns.github.io/apsw/

APSW is a really neat library that provides a thin wrapper on top of SQLite's
C interface.

Here are just a few reasons to use APSW, taken from the documentation:

* APSW gives all functionality of SQLite, including virtual tables, virtual
  file system, blob i/o, backups and file control.
* Connections can be shared across threads without any additional locking.
* Transactions are managed explicitly by your code.
* APSW can handle nested transactions.
* Unicode is handled correctly.
* APSW is faster.
"""
import apsw
from peewee import *
from peewee import __exception_wrapper__
from peewee import BooleanField as _BooleanField
from peewee import DateField as _DateField
from peewee import DateTimeField as _DateTimeField
from peewee import DecimalField as _DecimalField
from peewee import Insert
from peewee import TimeField as _TimeField
from peewee import logger

from playhouse.sqlite_ext import SqliteExtDatabase

class APSWDatabase(SqliteExtDatabase):
    server_version = tuple(int(i) for i in apsw.sqlitelibversion().split('.'))

def __init__(self, database, **kwargs):
        self._modules = {}
        super(APSWDatabase, self).__init__(database, **kwargs)

def register_module(self, mod_name, mod_inst):
        self._modules[mod_name] = mod_inst
        if not self.is_closed():
            self.connection().createmodule(mod_name, mod_inst)

def unregister_module(self, mod_name):
        del(self._modules[mod_name])

def _connect(self):
        conn = apsw.Connection(self.database, **self.connect_params)
        if self._timeout is not None:
            conn.setbusytimeout(self._timeout * 1000)
        try:
            self._add_conn_hooks(conn)
        except:
            conn.close()
            raise
        return conn

def _add_conn_hooks(self, conn):
        super(APSWDatabase, self)._add_conn_hooks(conn)
        self._load_modules(conn)  # APSW-only.

def _load_modules(self, conn):
        for mod_name, mod_inst in self._modules.items():
            conn.createmodule(mod_name, mod_inst)
        return conn

def _load_aggregates(self, conn):
        for name, (klass, num_params) in self._aggregates.items():
            def make_aggregate():
                return (klass(), klass.step, klass.finalize)
            conn.createaggregatefunction(name, make_aggregate)

def _load_collations(self, conn):
        for name, fn in self._collations.items():
            conn.createcollation(name, fn)

def _load_functions(self, conn):
        for name, (fn, num_params, deterministic) in self._functions.items():
            args = (deterministic,) if deterministic else ()
            conn.createscalarfunction(name, fn, num_params, *args)

def _load_extensions(self, conn):
        conn.enableloadextension(True)
        for extension in self._extensions:
            conn.loadextension(extension)

def load_extension(self, extension):
        self._extensions.add(extension)
        if not self.is_closed():
            conn = self.connection()
            conn.enableloadextension(True)
            conn.loadextension(extension)

def last_insert_id(self, cursor, query_type=None):
        if not self.returning_clause:
            return cursor.getconnection().last_insert_rowid()
        elif query_type == Insert.SIMPLE:
            try:
                return cursor[0][0]
            except (AttributeError, IndexError, TypeError):
                pass
        return cursor

def rows_affected(self, cursor):
        try:
            return cursor.getconnection().changes()
        except AttributeError:
            return cursor.cursor.getconnection().changes()  # RETURNING query.

def begin(self, lock_type='deferred'):
        self.cursor().execute('begin %s;' % lock_type)

def commit(self):
        with __exception_wrapper__:
            curs = self.cursor()
            if curs.getconnection().getautocommit():
                return False
            curs.execute('commit;')
        return True

def rollback(self):
        with __exception_wrapper__:
            curs = self.cursor()
            if curs.getconnection().getautocommit():
                return False
            curs.execute('rollback;')
        return True

def execute_sql(self, sql, params=None):
        logger.debug((sql, params))
        with __exception_wrapper__:
            cursor = self.cursor()
            cursor.execute(sql, params or ())
        return cursor

def nh(s, v):
    if v is not None:
        return str(v)

class BooleanField(_BooleanField):
    def db_value(self, v):
        v = super(BooleanField, self).db_value(v)
        if v is not None:
            return v and 1 or 0

class DateField(_DateField):
    db_value = nh

class TimeField(_TimeField):
    db_value = nh

class DateTimeField(_DateTimeField):
    db_value = nh

class DecimalField(_DecimalField):
    db_value = nh

Name	Type	Size	Owner/Group	Permission	Last Modified	Actions
.	dir	-	root/root	drwxr-xr-x	2026-08-04 10:59:21
..	dir	-	root/root	drwxr-xr-x	2026-08-12 11:03:19
__pycache__	dir	-	root/root	drwxr-xr-x	2026-08-04 10:59:21
__init__.py	application/x-empty	0 B	root/root	-rw-r--r--	2026-07-20 08:43:09
apsw_ext.py	text/plain	4.9 KB	root/root	-rw-r--r--	2026-07-20 08:43:09
cockroachdb.py	text/x-script.python	8.95 KB	root/root	-rw-r--r--	2026-07-20 08:43:09
dataset.py	text/x-script.python	14.15 KB	root/root	-rw-r--r--	2026-07-20 08:43:09
db_url.py	text/x-script.python	4.26 KB	root/root	-rw-r--r--	2026-07-20 08:43:09
fields.py	text/x-script.python	1.66 KB	root/root	-rw-r--r--	2026-07-20 08:43:09
flask_utils.py	text/x-script.python	8 KB	root/root	-rw-r--r--	2026-07-20 08:43:09
hybrid.py	text/x-script.python	1.49 KB	root/root	-rw-r--r--	2026-07-20 08:43:09
kv.py	text/x-script.python	5.48 KB	root/root	-rw-r--r--	2026-07-20 08:43:09
migrate.py	text/plain	32.66 KB	root/root	-rw-r--r--	2026-07-20 08:43:09
mysql_ext.py	text/x-script.python	3.78 KB	root/root	-rw-r--r--	2026-07-20 08:43:09
pool.py	text/plain	12.79 KB	root/root	-rw-r--r--	2026-07-20 08:43:09
postgres_ext.py	text/plain	14.98 KB	root/root	-rw-r--r--	2026-07-20 08:43:09
psycopg3_ext.py	text/x-script.python	5.34 KB	root/root	-rw-r--r--	2026-07-20 08:43:09
reflection.py	text/x-script.python	30.42 KB	root/root	-rw-r--r--	2026-07-20 08:43:09
shortcuts.py	text/x-script.python	11.48 KB	root/root	-rw-r--r--	2026-07-20 08:43:09
signals.py	text/plain	2.45 KB	root/root	-rw-r--r--	2026-07-20 08:43:09
sqlcipher_ext.py	text/plain	3.55 KB	root/root	-rw-r--r--	2026-07-20 08:43:09
sqlite_changelog.py	text/x-script.python	4.68 KB	root/root	-rw-r--r--	2026-07-20 08:43:09
sqlite_ext.py	text/x-script.python	47.38 KB	root/root	-rw-r--r--	2026-07-20 08:43:09
sqlite_udf.py	text/x-script.python	13.34 KB	root/root	-rw-r--r--	2026-07-20 08:43:09
sqliteq.py	text/x-script.python	10.57 KB	root/root	-rw-r--r--	2026-07-20 08:43:09
test_utils.py	text/x-script.python	1.81 KB	root/root	-rw-r--r--	2026-07-20 08:43:09