# -*- coding: utf-8 -*-
#
# Copyright 2014, Qunar OPSDEV
#
#    Licensed under the Apache License, Version 2.0 (the "License");
#    you may not use this file except in compliance with the License.
#    You may obtain a copy of the License at
#
#      http://www.apache.org/licenses/LICENSE-2.0
#
#    Unless required by applicable law or agreed to in writing, software
#    distributed under the License is distributed on an "AS IS" BASIS,
#    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
#    See the License for the specific language governing permissions and
#    limitations under the License.
#
# Author: Jianing Yang <jianingy.yang@gmail.com>
#

from qg.db.models import TableNameMixin, HasIdMixin, TimestampMixin
from sqlalchemy.dialects.postgresql import HSTORE
from sqlalchemy.ext.mutable import MutableDict
import sqlalchemy as sa

from treestore.models.base import BASE
from treestore.db.sqltypes import LTree


class TreeNode(BASE, TableNameMixin, HasIdMixin, TimestampMixin):

    canonical_path = sa.Column(LTree(), nullable=False, unique=True)
    values = sa.Column(MutableDict.as_mutable(HSTORE))
