postgres.py
46 lines
| 1.2 KiB
| text/x-python
|
PythonLexer
r833 | """ | |||
`PostgreSQL`_ database specific implementations of changeset classes. | ||||
.. _`PostgreSQL`: http://www.postgresql.org/ | ||||
""" | ||||
from migrate.changeset import ansisql, SQLA_06 | ||||
if not SQLA_06: | ||||
from sqlalchemy.databases import postgres as sa_base | ||||
PGSchemaGenerator = sa_base.PGSchemaGenerator | ||||
else: | ||||
from sqlalchemy.databases import postgresql as sa_base | ||||
PGSchemaGenerator = sa_base.PGDDLCompiler | ||||
class PGColumnGenerator(PGSchemaGenerator, ansisql.ANSIColumnGenerator): | ||||
"""PostgreSQL column generator implementation.""" | ||||
pass | ||||
class PGColumnDropper(ansisql.ANSIColumnDropper): | ||||
"""PostgreSQL column dropper implementation.""" | ||||
pass | ||||
class PGSchemaChanger(ansisql.ANSISchemaChanger): | ||||
"""PostgreSQL schema changer implementation.""" | ||||
pass | ||||
class PGConstraintGenerator(ansisql.ANSIConstraintGenerator): | ||||
"""PostgreSQL constraint generator implementation.""" | ||||
pass | ||||
class PGConstraintDropper(ansisql.ANSIConstraintDropper): | ||||
"""PostgreSQL constaint dropper implementation.""" | ||||
pass | ||||
class PGDialect(ansisql.ANSIDialect): | ||||
columngenerator = PGColumnGenerator | ||||
columndropper = PGColumnDropper | ||||
schemachanger = PGSchemaChanger | ||||
constraintgenerator = PGConstraintGenerator | ||||
constraintdropper = PGConstraintDropper | ||||