content: /*
   * Tencent is pleased to support the open source community by making Angel available.
   *
   * Copyright (C) 2017-2018 THL A29 Limited, a Tencent company. 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
   *
   * https://opensource.org/licenses/Apache-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.
   *
   */
  
  
  package com.tencent.angel.ps.storage.matrix;
  
  import com.tencent.angel.ps.storage.vector.ServerRow;
  
  import java.util.Iterator;
  import java.util.Map;
  
  public interface PartitionSource {
  
    void init(int rowNum);
  
    ServerRow getRow(int index);
  
    void putRow(int index, ServerRow row);
  
    int rowNum();
  
    boolean hasRow(int index);
  
    Iterator<Map.Entry<Integer, ServerRow>> iterator();
  
  }
  