blob: d1d4cc80020450a1d13521356eff3b9ae3b77d66 (
plain)
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
|
"""
`PostgreSQL`_ database specific implementations of changeset classes.
.. _`PostgreSQL`: http://www.postgresql.org/
"""
from migrate.changeset import ansisql
from sqlalchemy.databases import postgres as sa_base
#import sqlalchemy as sa
PGSchemaGenerator = sa_base.PGSchemaGenerator
class PGSchemaGeneratorMixin(object):
"""Common code used by the PostgreSQL specific classes."""
def _do_quote_table_identifier(self, identifier):
return identifier
def _do_quote_column_identifier(self, identifier):
return '"%s"'%identifier
class PGColumnGenerator(PGSchemaGenerator, ansisql.ANSIColumnGenerator,
PGSchemaGeneratorMixin):
"""PostgreSQL column generator implementation."""
pass
class PGColumnDropper(ansisql.ANSIColumnDropper, PGSchemaGeneratorMixin):
"""PostgreSQL column dropper implementation."""
pass
class PGSchemaChanger(ansisql.ANSISchemaChanger, PGSchemaGeneratorMixin):
"""PostgreSQL schema changer implementation."""
pass
class PGConstraintGenerator(ansisql.ANSIConstraintGenerator,
PGSchemaGeneratorMixin):
"""PostgreSQL constraint generator implementation."""
pass
class PGConstraintDropper(ansisql.ANSIConstraintDropper,
PGSchemaGeneratorMixin):
"""PostgreSQL constaint dropper implementation."""
pass
class PGDialect(ansisql.ANSIDialect):
columngenerator = PGColumnGenerator
columndropper = PGColumnDropper
schemachanger = PGSchemaChanger
constraintgenerator = PGConstraintGenerator
constraintdropper = PGConstraintDropper
|
