
# Copyright (c) 2025, Huawei Technologies.
# All Rights Reserved.
#
# 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.
# ==============================================================================
from abc import ABC, abstractmethod


class GraphRepo(ABC): 
    
    @abstractmethod
    def query_root_nodes(self, graph_type, rank, step): 
        pass
    
    @abstractmethod
    def query_sub_nodes(self, node_name, graph_type, rank, step): 
        pass

    @abstractmethod
    def query_up_nodes(self, node_name, graph_type, rank, step): 
        pass
