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Method set_transaction() renamed to set_session()

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In fact it doesn't change "the transaction", as there has to be no
transaction when invoked. The effect instead is to execute SET SESSION
CHARACTERISTICS.
This commit is contained in:
Daniele Varrazzo 2011-06-08 14:22:11 +01:00
parent 1a51cfe274
commit d2b28abced
7 changed files with 43 additions and 43 deletions
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2
NEWS
View File

@ -1,7 +1,7 @@
What's new in psycopg 2.4.2
---------------------------
- Added 'set_transaction()' method and 'autocommit' property to the
- Added 'set_session()' method and 'autocommit' property to the
connection. Added support for read-only sessions and, for PostgreSQL
9.1, for the "repeatable read" isolation level and the "deferrable"
transaction property.

2
doc/src/advanced.rst
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@ -378,7 +378,7 @@ transaction is not implicitly started at the first query and is not possible
to use methods `~connection.commit()` and `~connection.rollback()`: you can
manually control transactions using `~cursor.execute()` to send database
commands such as :sql:`BEGIN`, :sql:`COMMIT` and :sql:`ROLLBACK`. Similarly
`set_transaction()` can't be used but it is still possible to invoke the
`~connection.set_session()` can't be used but it is still possible to invoke the
:sql:`SET` command with the proper :sql:`default_transaction_...` parameter.
With asynchronous connections it is also not possible to use

4
doc/src/connection.rst
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@ -327,7 +327,7 @@ The ``connection`` class
pair: Transaction; Autocommit
pair: Transaction; Isolation level
.. method:: set_transaction([isolation_level,] [readonly,] [deferrable,] [autocommit])
.. method:: set_session([isolation_level,] [readonly,] [deferrable,] [autocommit])
Set one or more parameters for the next transactions or statements in
the current session. See |SET TRANSACTION|_ for further details.
@ -411,7 +411,7 @@ The ``connection`` class
.. note::
From version 2.4.2, `set_transaction()` and `autocommit`, offer
From version 2.4.2, `set_session()` and `autocommit`, offer
finer control on the transaction characteristics.
Read or set the `transaction isolation level`_ for the current session.

2
psycopg/connection.h
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@ -136,7 +136,7 @@ HIDDEN int conn_connect(connectionObject *self, long int async);
HIDDEN void conn_close(connectionObject *self);
HIDDEN int conn_commit(connectionObject *self);
HIDDEN int conn_rollback(connectionObject *self);
HIDDEN int conn_set_transaction(connectionObject *self, const char *isolevel,
HIDDEN int conn_set_session(connectionObject *self, const char *isolevel,
const char *readonly, const char *deferrable,
int autocommit);
HIDDEN int conn_set_autocommit(connectionObject *self, int value);

10
psycopg/connection_int.c
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@ -959,7 +959,7 @@ conn_rollback(connectionObject *self)
}
int
conn_set_transaction(connectionObject *self,
conn_set_session(connectionObject *self,
const char *isolevel, const char *readonly, const char *deferrable,
int autocommit)
{
@ -971,7 +971,7 @@ conn_set_transaction(connectionObject *self,
pthread_mutex_lock(&self->lock);
if (isolevel) {
Dprintf("conn_set_transaction: setting isolation to %s", isolevel);
Dprintf("conn_set_session: setting isolation to %s", isolevel);
if ((res = pq_set_guc_locked(self,
"default_transaction_isolation", isolevel,
&pgres, &error, &_save))) {
@ -980,7 +980,7 @@ conn_set_transaction(connectionObject *self,
}
if (readonly) {
Dprintf("conn_set_transaction: setting read only to %s", readonly);
Dprintf("conn_set_session: setting read only to %s", readonly);
if ((res = pq_set_guc_locked(self,
"default_transaction_read_only", readonly,
&pgres, &error, &_save))) {
@ -989,7 +989,7 @@ conn_set_transaction(connectionObject *self,
}
if (deferrable) {
Dprintf("conn_set_transaction: setting deferrable to %s", deferrable);
Dprintf("conn_set_session: setting deferrable to %s", deferrable);
if ((res = pq_set_guc_locked(self,
"default_transaction_deferrable", deferrable,
&pgres, &error, &_save))) {
@ -998,7 +998,7 @@ conn_set_transaction(connectionObject *self,
}
if (self->autocommit != autocommit) {
Dprintf("conn_set_transaction: setting autocommit to %d", autocommit);
Dprintf("conn_set_session: setting autocommit to %d", autocommit);
self->autocommit = autocommit;
}

18
psycopg/connection_type.c
View File

@ -456,14 +456,14 @@ _psyco_conn_parse_onoff(PyObject *pyval)
}
}
/* set_transaction - default transaction characteristics */
/* set_session - set default transaction characteristics */
#define psyco_conn_set_transaction_doc \
"set_transaction(...) -- Set one or more parameters for the next transactions.\n\n" \
#define psyco_conn_set_session_doc \
"set_session(...) -- Set one or more parameters for the next transactions.\n\n" \
"Accepted arguments are 'isolation_level', 'readonly', 'deferrable', 'autocommit'."
static PyObject *
psyco_conn_set_transaction(connectionObject *self, PyObject *args, PyObject *kwargs)
psyco_conn_set_session(connectionObject *self, PyObject *args, PyObject *kwargs)
{
PyObject *isolevel = Py_None;
PyObject *readonly = Py_None;
@ -479,8 +479,8 @@ psyco_conn_set_transaction(connectionObject *self, PyObject *args, PyObject *kwa
{"isolation_level", "readonly", "deferrable", "autocommit", NULL};
EXC_IF_CONN_CLOSED(self);
EXC_IF_CONN_ASYNC(self, set_transaction);
EXC_IF_IN_TRANSACTION(self, set_transaction);
EXC_IF_CONN_ASYNC(self, set_session);
EXC_IF_IN_TRANSACTION(self, set_session);
if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|OOOO", kwlist,
&isolevel, &readonly, &deferrable, &autocommit)) {
@ -514,7 +514,7 @@ psyco_conn_set_transaction(connectionObject *self, PyObject *args, PyObject *kwa
if (-1 == c_autocommit) { return NULL; }
}
if (0 != conn_set_transaction(self,
if (0 != conn_set_session(self,
c_isolevel, c_readonly, c_deferrable, c_autocommit)) {
return NULL;
}
@ -904,8 +904,8 @@ static struct PyMethodDef connectionObject_methods[] = {
{"tpc_recover", (PyCFunction)psyco_conn_tpc_recover,
METH_NOARGS, psyco_conn_tpc_recover_doc},
#ifdef PSYCOPG_EXTENSIONS
{"set_transaction", (PyCFunction)psyco_conn_set_transaction,
METH_VARARGS|METH_KEYWORDS, psyco_conn_set_transaction_doc},
{"set_session", (PyCFunction)psyco_conn_set_session,
METH_VARARGS|METH_KEYWORDS, psyco_conn_set_session_doc},
{"set_isolation_level", (PyCFunction)psyco_conn_set_isolation_level,
METH_VARARGS, psyco_conn_set_isolation_level_doc},
{"set_client_encoding", (PyCFunction)psyco_conn_set_client_encoding,

48
tests/test_connection.py
View File

@ -729,18 +729,18 @@ class TransactionControlTests(unittest.TestCase):
cur = self.conn.cursor()
cur.execute("select 1")
self.assertRaises(psycopg2.ProgrammingError,
self.conn.set_transaction,
self.conn.set_session,
psycopg2.extensions.ISOLATION_LEVEL_SERIALIZABLE)
def test_set_isolation_level(self):
cur = self.conn.cursor()
self.conn.set_transaction(
self.conn.set_session(
psycopg2.extensions.ISOLATION_LEVEL_SERIALIZABLE)
cur.execute("SHOW default_transaction_isolation;")
self.assertEqual(cur.fetchone()[0], 'serializable')
self.conn.rollback()
self.conn.set_transaction(
self.conn.set_session(
psycopg2.extensions.ISOLATION_LEVEL_REPEATABLE_READ)
cur.execute("SHOW default_transaction_isolation;")
if self.conn.server_version > 80000:
@ -749,13 +749,13 @@ class TransactionControlTests(unittest.TestCase):
self.assertEqual(cur.fetchone()[0], 'serializable')
self.conn.rollback()
self.conn.set_transaction(
self.conn.set_session(
isolation_level=psycopg2.extensions.ISOLATION_LEVEL_READ_COMMITTED)
cur.execute("SHOW default_transaction_isolation;")
self.assertEqual(cur.fetchone()[0], 'read committed')
self.conn.rollback()
self.conn.set_transaction(
self.conn.set_session(
isolation_level=psycopg2.extensions.ISOLATION_LEVEL_READ_UNCOMMITTED)
cur.execute("SHOW default_transaction_isolation;")
if self.conn.server_version > 80000:
@ -766,12 +766,12 @@ class TransactionControlTests(unittest.TestCase):
def test_set_isolation_level_str(self):
cur = self.conn.cursor()
self.conn.set_transaction("serializable")
self.conn.set_session("serializable")
cur.execute("SHOW default_transaction_isolation;")
self.assertEqual(cur.fetchone()[0], 'serializable')
self.conn.rollback()
self.conn.set_transaction("repeatable read")
self.conn.set_session("repeatable read")
cur.execute("SHOW default_transaction_isolation;")
if self.conn.server_version > 80000:
self.assertEqual(cur.fetchone()[0], 'repeatable read')
@ -779,12 +779,12 @@ class TransactionControlTests(unittest.TestCase):
self.assertEqual(cur.fetchone()[0], 'serializable')
self.conn.rollback()
self.conn.set_transaction("read committed")
self.conn.set_session("read committed")
cur.execute("SHOW default_transaction_isolation;")
self.assertEqual(cur.fetchone()[0], 'read committed')
self.conn.rollback()
self.conn.set_transaction("read uncommitted")
self.conn.set_session("read uncommitted")
cur.execute("SHOW default_transaction_isolation;")
if self.conn.server_version > 80000:
self.assertEqual(cur.fetchone()[0], 'read uncommitted')
@ -793,13 +793,13 @@ class TransactionControlTests(unittest.TestCase):
self.conn.rollback()
def test_bad_isolation_level(self):
self.assertRaises(ValueError, self.conn.set_transaction, 0)
self.assertRaises(ValueError, self.conn.set_transaction, 5)
self.assertRaises(ValueError, self.conn.set_transaction, 'whatever')
self.assertRaises(ValueError, self.conn.set_session, 0)
self.assertRaises(ValueError, self.conn.set_session, 5)
self.assertRaises(ValueError, self.conn.set_session, 'whatever')
def test_set_read_only(self):
cur = self.conn.cursor()
self.conn.set_transaction(readonly=True)
self.conn.set_session(readonly=True)
cur.execute("SHOW default_transaction_read_only;")
self.assertEqual(cur.fetchone()[0], 'on')
self.conn.rollback()
@ -808,12 +808,12 @@ class TransactionControlTests(unittest.TestCase):
self.conn.rollback()
cur = self.conn.cursor()
self.conn.set_transaction(readonly=None)
self.conn.set_session(readonly=None)
cur.execute("SHOW default_transaction_read_only;")
self.assertEqual(cur.fetchone()[0], 'on')
self.conn.rollback()
self.conn.set_transaction(readonly=False)
self.conn.set_session(readonly=False)
cur.execute("SHOW default_transaction_read_only;")
self.assertEqual(cur.fetchone()[0], 'off')
self.conn.rollback()
@ -826,8 +826,8 @@ class TransactionControlTests(unittest.TestCase):
default_readonly = cur.fetchone()[0]
self.conn.rollback()
self.conn.set_transaction(isolation_level='serializable', readonly=True)
self.conn.set_transaction(isolation_level='default', readonly='default')
self.conn.set_session(isolation_level='serializable', readonly=True)
self.conn.set_session(isolation_level='default', readonly='default')
cur.execute("SHOW default_transaction_isolation;")
self.assertEqual(cur.fetchone()[0], default_isolevel)
@ -837,7 +837,7 @@ class TransactionControlTests(unittest.TestCase):
@skip_before_postgres(9, 1)
def test_set_deferrable(self):
cur = self.conn.cursor()
self.conn.set_transaction(readonly=True, deferrable=True)
self.conn.set_session(readonly=True, deferrable=True)
cur.execute("SHOW default_transaction_read_only;")
self.assertEqual(cur.fetchone()[0], 'on')
cur.execute("SHOW default_transaction_deferrable;")
@ -847,7 +847,7 @@ class TransactionControlTests(unittest.TestCase):
self.assertEqual(cur.fetchone()[0], 'on')
self.conn.rollback()
self.conn.set_transaction(deferrable=False)
self.conn.set_session(deferrable=False)
cur.execute("SHOW default_transaction_read_only;")
self.assertEqual(cur.fetchone()[0], 'on')
cur.execute("SHOW default_transaction_deferrable;")
@ -857,7 +857,7 @@ class TransactionControlTests(unittest.TestCase):
@skip_after_postgres(9, 1)
def test_set_deferrable_error(self):
self.assertRaises(psycopg2.ProgrammingError,
self.conn.set_transaction, readonly=True, deferrable=True)
self.conn.set_session, readonly=True, deferrable=True)
class AutocommitTests(unittest.TestCase):
@ -915,8 +915,8 @@ class AutocommitTests(unittest.TestCase):
self.assertRaises(psycopg2.ProgrammingError,
setattr, self.conn, 'autocommit', True)
def test_set_transaction_autocommit(self):
self.conn.set_transaction(autocommit=True)
def test_set_session_autocommit(self):
self.conn.set_session(autocommit=True)
self.assert_(self.conn.autocommit)
self.assertEqual(self.conn.status, psycopg2.extensions.STATUS_READY)
self.assertEqual(self.conn.get_transaction_status(),
@ -928,7 +928,7 @@ class AutocommitTests(unittest.TestCase):
self.assertEqual(self.conn.get_transaction_status(),
psycopg2.extensions.TRANSACTION_STATUS_IDLE)
self.conn.set_transaction(autocommit=False)
self.conn.set_session(autocommit=False)
self.assert_(not self.conn.autocommit)
self.assertEqual(self.conn.status, psycopg2.extensions.STATUS_READY)
self.assertEqual(self.conn.get_transaction_status(),
@ -940,7 +940,7 @@ class AutocommitTests(unittest.TestCase):
psycopg2.extensions.TRANSACTION_STATUS_INTRANS)
self.conn.rollback()
self.conn.set_transaction('serializable', readonly=True, autocommit=True)
self.conn.set_session('serializable', readonly=True, autocommit=True)
self.assert_(self.conn.autocommit)
cur.execute('select 1;')
self.assertEqual(self.conn.status, psycopg2.extensions.STATUS_READY)