kallithea Files · rhodecode/lib/dbmigrate/migrate/changeset/databases/postgres.py

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Marcin Kuzminski

Rewrote git middleware with the same pattern as recent fix for #176
- additionally fixed dulwich server bug, that used old deprecated method. This fix caused huge improvement of speed for fetching git repos
- moved simplehg and simplegit middleware into begining of pylons callstack. This low level middleware
don't need to run any of the middlewares except each other.

"""
   `PostgreSQL`_ database specific implementations of changeset classes.

   .. _`PostgreSQL`: http://www.postgresql.org/
"""
from rhodecode.lib.dbmigrate.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