Revision 6a82f89f snf-pithos-backend/pithos/backends/lib/sqlalchemy/groups.py
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from sqlalchemy import Table, Column, String, MetaData |
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from sqlalchemy.sql import select, and_ |
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from sqlalchemy.schema import Index |
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from sqlalchemy.exc import NoSuchTableError |
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from dbworker import DBWorker |
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def create_tables(engine): |
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metadata = MetaData() |
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columns=[] |
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columns.append(Column('owner', String(256), primary_key=True))
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columns.append(Column('name', String(256), primary_key=True))
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columns.append(Column('member', String(256), primary_key=True))
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groups = Table('groups', metadata, *columns, mysql_engine='InnoDB')
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# place an index on member |
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Index('idx_groups_member', groups.c.member)
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metadata.create_all(engine) |
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return metadata.sorted_tables |
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class Groups(DBWorker): |
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"""Groups are named collections of members, belonging to an owner.""" |
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def __init__(self, **params): |
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DBWorker.__init__(self, **params) |
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metadata = MetaData() |
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columns=[] |
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columns.append(Column('owner', String(256), primary_key=True))
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columns.append(Column('name', String(256), primary_key=True))
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columns.append(Column('member', String(256), primary_key=True))
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self.groups = Table('groups', metadata, *columns, mysql_engine='InnoDB')
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# place an index on member |
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Index('idx_groups_member', self.groups.c.member)
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try: |
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metadata = MetaData(self.engine) |
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self.groups = Table('groups', metadata, autoload=True)
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except NoSuchTableError: |
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tables = create_tables(self.engine) |
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map(lambda t: self.__setattr__(t.name, t), tables) |
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metadata.create_all(self.engine) |
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def group_names(self, owner): |
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"""List all group names belonging to owner.""" |
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