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do not require sqlalchemy, except for sqlite

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This commit is contained in:
Matt Turnbull 2009-08-29 20:16:27 +01:00
parent d2380ba738
commit fe72b6edad
1 changed files with 18 additions and 5 deletions
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13
pyfpdb/fpdb_db.py
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@ -1,4 +1,5 @@
#!/usr/bin/python #!/usr/bin/python
# -*- coding: utf-8 -*-
#Copyright 2008 Steffen Jobbagy-Felso #Copyright 2008 Steffen Jobbagy-Felso
#This program is free software: you can redistribute it and/or modify #This program is free software: you can redistribute it and/or modify
@ -20,7 +21,14 @@ import re
import sys import sys
import logging import logging
from time import time, strftime from time import time, strftime
use_pool = False
try:
import sqlalchemy.pool as pool import sqlalchemy.pool as pool
use_pool = True
except:
logging.info("Not using sqlalchemy connection pool.")
import fpdb_simple import fpdb_simple
import FpdbSQLQueries import FpdbSQLQueries
@ -66,6 +74,7 @@ class fpdb_db:
self.database=database self.database=database
if backend==fpdb_db.MYSQL_INNODB: if backend==fpdb_db.MYSQL_INNODB:
import MySQLdb import MySQLdb
if use_pool:
MySQLdb = pool.manage(MySQLdb, pool_size=5) MySQLdb = pool.manage(MySQLdb, pool_size=5)
try: try:
self.db = MySQLdb.connect(host = host, user = user, passwd = password, db = database, use_unicode=True) self.db = MySQLdb.connect(host = host, user = user, passwd = password, db = database, use_unicode=True)
@ -74,6 +83,7 @@ class fpdb_db:
elif backend==fpdb_db.PGSQL: elif backend==fpdb_db.PGSQL:
import psycopg2 import psycopg2
import psycopg2.extensions import psycopg2.extensions
if use_pool:
psycopg2 = pool.manage(psycopg2, pool_size=5) psycopg2 = pool.manage(psycopg2, pool_size=5)
psycopg2.extensions.register_type(psycopg2.extensions.UNICODE) psycopg2.extensions.register_type(psycopg2.extensions.UNICODE)
# If DB connection is made over TCP, then the variables # If DB connection is made over TCP, then the variables
@ -106,7 +116,10 @@ class fpdb_db:
elif backend==fpdb_db.SQLITE: elif backend==fpdb_db.SQLITE:
logging.info("Connecting to SQLite:%(database)s" % {'database':database}) logging.info("Connecting to SQLite:%(database)s" % {'database':database})
import sqlite3 import sqlite3
if use_pool:
sqlite3 = pool.manage(sqlite3, pool_size=1) sqlite3 = pool.manage(sqlite3, pool_size=1)
else:
logging.warning("SQLite won't work well without 'sqlalchemy' installed.")
self.db = sqlite3.connect(database,detect_types=sqlite3.PARSE_DECLTYPES) self.db = sqlite3.connect(database,detect_types=sqlite3.PARSE_DECLTYPES)
sqlite3.register_converter("bool", lambda x: bool(int(x))) sqlite3.register_converter("bool", lambda x: bool(int(x)))
sqlite3.register_adapter(bool, lambda x: "1" if x else "0") sqlite3.register_adapter(bool, lambda x: "1" if x else "0")