-
Notifications
You must be signed in to change notification settings - Fork 390
/
schemas.py
76 lines (59 loc) · 2.32 KB
/
schemas.py
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
#
# This source file is part of the EdgeDB open source project.
#
# Copyright 2008-present MagicStack Inc. and the EdgeDB authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
from .. import common
from . import base
from . import ddl
class SchemaExists(base.Condition):
def __init__(self, name):
self.name = name
async def code(self, context):
return (
'SELECT oid FROM pg_catalog.pg_namespace WHERE nspname = $1',
[self.name])
class CreateSchema(ddl.DDLOperation):
def __init__(
self, name, *, conditions=None, neg_conditions=None, priority=0):
super().__init__(
conditions=conditions, neg_conditions=neg_conditions,
priority=priority)
self.name = name
self.opid = name
self.neg_conditions.add(SchemaExists(self.name))
async def code(self, context):
return 'CREATE SCHEMA %s' % common.quote_ident(self.name)
def __repr__(self):
return '<edgedb.sync.%s %s>' % (self.__class__.__name__, self.name)
class RenameSchema(ddl.SchemaObjectOperation):
def __init__(self, name, new_name):
super().__init__(name)
self.new_name = new_name
async def code(self, context):
return '''ALTER SCHEMA {} RENAME TO {}'''.format(
common.quote_ident(self.name),
common.quote_ident(self.new_name)), []
class DropSchema(ddl.DDLOperation):
def __init__(
self, name, *, conditions=None, neg_conditions=None, priority=0):
super().__init__(
conditions=conditions, neg_conditions=neg_conditions,
priority=priority)
self.name = name
async def code(self, context):
return 'DROP SCHEMA %s' % common.quote_ident(self.name)
def __repr__(self):
return '<edgedb.sync.%s %s>' % (self.__class__.__name__, self.name)