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Thu, Dec 19, 21:54

model.py
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# -*- coding: utf-8 -*-
## This file is part of Invenio.
## Copyright (C) 2011, 2012, 2013 CERN.
##
## Invenio 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 2 of the
## License, or (at your option) any later version.
##
## Invenio 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 Invenio; if not, write to the Free Software Foundation, Inc.,
## 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
"""
invenio.ext.session.model
-------------------------
Implements example of SQLAlchemy session model backend.
"""
from datetime import datetime
from flask.ext.login import current_user
from invenio.ext.sqlalchemy import db
class Session(db.Model):
"""Represents a Session record."""
__tablename__ = 'session'
session_key = db.Column(db.String(32), nullable=False,
server_default='', primary_key=True)
session_expiry = db.Column(db.DateTime, nullable=True, index=True)
session_object = db.Column(db.LargeBinary, nullable=True)
uid = db.Column(db.Integer(15, unsigned=True), nullable=False, index=True)
def get_session(self, name, expired=False):
where = Session.session_key == name
if expired:
where = db.and_(
where, Session.session_expiry >= db.func.current_timestamp())
return self.query.filter(where)
def set_session(self, name, value, timeout=None):
uid = current_user.get_id()
session_expiry = datetime.utcnow() + timeout
return Session(session_key=name,
session_object=value,
session_expiry=session_expiry,
uid=uid)

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