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# Copyright (C) 2015-2016 by the Free Software Foundation, Inc.
#
# This file is part of GNU Mailman.
#
# GNU Mailman is free software: you can redistribute it and/or modify it under
# the terms of the GNU General Public License as published by the Free
# Software Foundation, either version 3 of the License, or (at your option)
# any later version.
#
# GNU Mailman is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
# more details.
#
# You should have received a copy of the GNU General Public License along with
# GNU Mailman. If not, see <http://www.gnu.org/licenses/>.
"""Model for workflow states."""
__all__ = [
'WorkflowState',
'WorkflowStateManager',
]
from mailman.database.model import Model
from mailman.database.transaction import dbconnection
from mailman.interfaces.workflow import IWorkflowState, IWorkflowStateManager
from sqlalchemy import Column, Unicode
from zope.interface import implementer
@implementer(IWorkflowState)
class WorkflowState(Model):
"""Workflow states."""
__tablename__ = 'workflowstate'
name = Column(Unicode, primary_key=True)
token = Column(Unicode, primary_key=True)
step = Column(Unicode)
data = Column(Unicode)
@implementer(IWorkflowStateManager)
class WorkflowStateManager:
"""See `IWorkflowStateManager`."""
@dbconnection
def save(self, store, name, token, step=None, data=None):
"""See `IWorkflowStateManager`."""
state = WorkflowState(name=name, token=token, step=step, data=data)
store.add(state)
@dbconnection
def restore(self, store, name, token):
"""See `IWorkflowStateManager`."""
state = store.query(WorkflowState).get((name, token))
if state is not None:
store.delete(state)
return state
@dbconnection
def discard(self, store, name, token):
"""See `IWorkflowStateManager`."""
state = store.query(WorkflowState).get((name, token))
if state is not None:
store.delete(state)
@property
@dbconnection
def count(self, store):
"""See `IWorkflowStateManager`."""
return store.query(WorkflowState).count()
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