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https://github.com/psycopg/psycopg2.git
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Merge branch 'fix-1487'
This commit is contained in:
commit
68d786b610
8
NEWS
8
NEWS
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@ -1,3 +1,11 @@
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What's new in psycopg 2.9.4 (unreleased)
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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- Fix `register_composite()`, `register_range()` with customized search_path
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(:ticket:`#1487`).
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- Handle correctly composite types with names or in schemas requiring escape.
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Current release
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---------------
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@ -363,33 +363,54 @@ class RangeCaster:
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schema = 'public'
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# get the type oid and attributes
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try:
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curs.execute("""\
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select rngtypid, rngsubtype,
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(select typarray from pg_type where oid = rngtypid)
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curs.execute("""\
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select rngtypid, rngsubtype, typarray
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from pg_range r
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join pg_type t on t.oid = rngtypid
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join pg_namespace ns on ns.oid = typnamespace
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where typname = %s and ns.nspname = %s;
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""", (tname, schema))
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rec = curs.fetchone()
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except ProgrammingError:
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if not conn.autocommit:
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conn.rollback()
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raise
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else:
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rec = curs.fetchone()
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if not rec:
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# The above algorithm doesn't work for customized seach_path
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# (#1487) The implementation below works better, but, to guarantee
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# backwards compatibility, use it only if the original one failed.
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try:
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savepoint = False
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# Because we executed statements earlier, we are either INTRANS
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# or we are IDLE only if the transaction is autocommit, in
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# which case we don't need the savepoint anyway.
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if conn.status == STATUS_IN_TRANSACTION:
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curs.execute("SAVEPOINT register_type")
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savepoint = True
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# revert the status of the connection as before the command
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if (conn_status != STATUS_IN_TRANSACTION
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and not conn.autocommit):
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conn.rollback()
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curs.execute("""\
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SELECT rngtypid, rngsubtype, typarray, typname, nspname
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from pg_range r
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join pg_type t on t.oid = rngtypid
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join pg_namespace ns on ns.oid = typnamespace
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WHERE t.oid = %s::regtype
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""", (name, ))
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except ProgrammingError:
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pass
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else:
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rec = curs.fetchone()
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if rec:
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tname, schema = rec[3:]
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finally:
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if savepoint:
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curs.execute("ROLLBACK TO SAVEPOINT register_type")
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# revert the status of the connection as before the command
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if conn_status != STATUS_IN_TRANSACTION and not conn.autocommit:
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conn.rollback()
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if not rec:
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raise ProgrammingError(
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f"PostgreSQL type '{name}' not found")
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f"PostgreSQL range '{name}' not found")
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type, subtype, array = rec
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type, subtype, array = rec[:3]
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return RangeCaster(name, pyrange,
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oid=type, subtype_oid=subtype, array_oid=array)
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@ -357,10 +357,6 @@ class NamedTupleCursor(_cursor):
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except StopIteration:
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return
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# ascii except alnum and underscore
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_re_clean = _re.compile(
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'[' + _re.escape(' !"#$%&\'()*+,-./:;<=>?@[\\]^`{|}~') + ']')
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def _make_nt(self):
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key = tuple(d[0] for d in self.description) if self.description else ()
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return self._cached_make_nt(key)
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@ -369,7 +365,7 @@ class NamedTupleCursor(_cursor):
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def _do_make_nt(cls, key):
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fields = []
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for s in key:
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s = cls._re_clean.sub('_', s)
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s = _re_clean.sub('_', s)
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# Python identifier cannot start with numbers, namedtuple fields
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# cannot start with underscore. So...
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if s[0] == '_' or '0' <= s[0] <= '9':
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@ -1061,6 +1057,7 @@ class CompositeCaster:
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return rv
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def _create_type(self, name, attnames):
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name = _re_clean.sub('_', name)
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self.type = namedtuple(name, attnames)
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self._ctor = self.type._make
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@ -1098,9 +1095,41 @@ ORDER BY attnum;
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recs = curs.fetchall()
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if not recs:
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# The above algorithm doesn't work for customized seach_path
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# (#1487) The implementation below works better, but, to guarantee
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# backwards compatibility, use it only if the original one failed.
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try:
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savepoint = False
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# Because we executed statements earlier, we are either INTRANS
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# or we are IDLE only if the transaction is autocommit, in
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# which case we don't need the savepoint anyway.
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if conn.status == _ext.STATUS_IN_TRANSACTION:
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curs.execute("SAVEPOINT register_type")
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savepoint = True
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curs.execute("""\
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SELECT t.oid, %s, attname, atttypid, typname, nspname
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FROM pg_type t
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JOIN pg_namespace ns ON typnamespace = ns.oid
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JOIN pg_attribute a ON attrelid = typrelid
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WHERE t.oid = %%s::regtype
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AND attnum > 0 AND NOT attisdropped
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ORDER BY attnum;
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""" % typarray, (name, ))
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except psycopg2.ProgrammingError:
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pass
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else:
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recs = curs.fetchall()
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if recs:
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tname = recs[0][4]
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schema = recs[0][5]
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finally:
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if savepoint:
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curs.execute("ROLLBACK TO SAVEPOINT register_type")
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# revert the status of the connection as before the command
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if (conn_status != _ext.STATUS_IN_TRANSACTION
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and not conn.autocommit):
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if conn_status != _ext.STATUS_IN_TRANSACTION and not conn.autocommit:
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conn.rollback()
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if not recs:
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@ -1304,3 +1333,8 @@ def _split_sql(sql):
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raise ValueError("the query doesn't contain any '%s' placeholder")
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return pre, post
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# ascii except alnum and underscore
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_re_clean = _re.compile(
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'[' + _re.escape(' !"#$%&\'()*+,-./:;<=>?@[\\]^`{|}~') + ']')
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@ -584,6 +584,68 @@ class AdaptTypeTestCase(ConnectingTestCase):
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curs.execute("select (4,8)::typens.typens_ii")
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self.assertEqual(curs.fetchone()[0], (4, 8))
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@skip_if_no_composite
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def test_composite_namespace_path(self):
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curs = self.conn.cursor()
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curs.execute("""
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select nspname from pg_namespace
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where nspname = 'typens';
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""")
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if not curs.fetchone():
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curs.execute("create schema typens;")
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self.conn.commit()
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self._create_type("typens.typensp_ii",
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[("a", "integer"), ("b", "integer")])
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curs.execute("set search_path=typens,public")
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t = psycopg2.extras.register_composite(
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"typensp_ii", self.conn)
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self.assertEqual(t.schema, 'typens')
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curs.execute("select (4,8)::typensp_ii")
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self.assertEqual(curs.fetchone()[0], (4, 8))
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@skip_if_no_composite
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def test_composite_weird_name(self):
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curs = self.conn.cursor()
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curs.execute("""
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select nspname from pg_namespace
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where nspname = 'qux.quux';
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""")
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if not curs.fetchone():
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curs.execute('create schema "qux.quux";')
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self._create_type('"qux.quux"."foo.bar"',
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[("a", "integer"), ("b", "integer")])
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t = psycopg2.extras.register_composite(
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'"qux.quux"."foo.bar"', self.conn)
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self.assertEqual(t.name, 'foo.bar')
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self.assertEqual(t.schema, 'qux.quux')
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curs.execute('select (4,8)::"qux.quux"."foo.bar"')
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self.assertEqual(curs.fetchone()[0], (4, 8))
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@skip_if_no_composite
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def test_composite_not_found(self):
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self.assertRaises(
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psycopg2.ProgrammingError, psycopg2.extras.register_composite,
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"nosuchtype", self.conn)
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self.assertEqual(self.conn.status, ext.STATUS_READY)
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cur = self.conn.cursor()
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cur.execute("select 1")
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self.assertRaises(
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psycopg2.ProgrammingError, psycopg2.extras.register_composite,
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"nosuchtype", self.conn)
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self.assertEqual(self.conn.status, ext.STATUS_IN_TRANSACTION)
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self.conn.rollback()
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self.conn.autocommit = True
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self.assertRaises(
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psycopg2.ProgrammingError, psycopg2.extras.register_composite,
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"nosuchtype", self.conn)
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self.assertEqual(self.conn.status, ext.STATUS_READY)
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@skip_if_no_composite
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@skip_before_postgres(8, 4)
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def test_composite_array(self):
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def _create_type(self, name, fields):
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curs = self.conn.cursor()
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try:
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curs.execute("savepoint x")
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curs.execute(f"drop type {name} cascade;")
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except psycopg2.ProgrammingError:
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self.conn.rollback()
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curs.execute("rollback to savepoint x")
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curs.execute("create type {} as ({});".format(name,
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", ".join(["%s %s" % p for p in fields])))
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if '.' in name:
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schema, name = name.split('.')
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else:
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schema = 'public'
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curs.execute("""\
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SELECT t.oid
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FROM pg_type t JOIN pg_namespace ns ON typnamespace = ns.oid
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WHERE typname = %s and nspname = %s;
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""", (name, schema))
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curs.execute("SELECT %s::regtype::oid", (name, ))
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oid = curs.fetchone()[0]
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self.conn.commit()
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return oid
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@ -1560,6 +1615,18 @@ class RangeCasterTestCase(ConnectingTestCase):
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cur = self.conn.cursor()
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self.assertRaises(psycopg2.ProgrammingError,
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register_range, 'nosuchrange', 'FailRange', cur)
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self.assertEqual(self.conn.status, ext.STATUS_READY)
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cur.execute("select 1")
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self.assertRaises(psycopg2.ProgrammingError,
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register_range, 'nosuchrange', 'FailRange', cur)
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self.assertEqual(self.conn.status, ext.STATUS_IN_TRANSACTION)
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self.conn.rollback()
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self.conn.autocommit = True
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self.assertRaises(psycopg2.ProgrammingError,
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register_range, 'nosuchrange', 'FailRange', cur)
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@restore_types
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def test_schema_range(self):
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register_range('r1', 'r1', cur)
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ra2 = register_range('r2', 'r2', cur)
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rars2 = register_range('rs.r2', 'r2', cur)
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register_range('rs.r3', 'r3', cur)
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rars3 = register_range('rs.r3', 'r3', cur)
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self.assertNotEqual(
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ra2.typecaster.values[0],
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@ -1588,6 +1655,27 @@ class RangeCasterTestCase(ConnectingTestCase):
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register_range, 'rs.r1', 'FailRange', cur)
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cur.execute("rollback to savepoint x;")
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cur2 = self.conn.cursor()
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cur2.execute("set local search_path to rs,public")
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ra3 = register_range('r3', 'r3', cur2)
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self.assertEqual(ra3.typecaster.values[0], rars3.typecaster.values[0])
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@skip_if_no_composite
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def test_rang_weird_name(self):
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cur = self.conn.cursor()
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cur.execute("""
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select nspname from pg_namespace
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where nspname = 'qux.quux';
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""")
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if not cur.fetchone():
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cur.execute('create schema "qux.quux";')
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cur.execute('create type "qux.quux"."foo.range" as range (subtype=text)')
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r = psycopg2.extras.register_range(
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'"qux.quux"."foo.range"', "foorange", cur)
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cur.execute('''select '[a,z]'::"qux.quux"."foo.range"''')
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self.assertEqual(cur.fetchone()[0], r.range('a', 'z', '[]'))
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def test_suite():
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return unittest.TestLoader().loadTestsFromName(__name__)
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