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Use set_session instead of set_isolation_level where available

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Avoid spurious queries as reported in psycopg2 ticket #125.
This commit is contained in:
Daniele Varrazzo 2012-12-02 23:51:26 +00:00
parent f9bcbc213e
commit fb24777200
1 changed files with 9 additions and 4 deletions
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7
ZPsycopgDA/db.py
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@ -52,7 +52,12 @@ class DB(TM, dbi_db.DB):
# connection, so we avoid to (re)initialize it risking errors. # connection, so we avoid to (re)initialize it risking errors.
conn = pool.getconn(self.dsn) conn = pool.getconn(self.dsn)
if init: if init:
conn.set_isolation_level(int(self.tilevel)) # use set_session where available as in these versions
# set_isolation_level generates an extra query.
if psycopg2.__version__ >= '2.4.2':
conn.set_session(isolation_level=int(self.tilevel))
else:
conn.set_isolation_level(int(self.tilevel))
conn.set_client_encoding(self.encoding) conn.set_client_encoding(self.encoding)
for tc in self.typecasts: for tc in self.typecasts:
register_type(tc, conn) register_type(tc, conn)