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.ml.matrix.psf.get.base;
  
  import com.tencent.angel.PartitionKey;
  import com.tencent.angel.psagent.PSAgentContext;
  
  import java.util.ArrayList;
  import java.util.List;
  
  /**
   * The Get parameter. The class that extends this interface must have a constructor without
   * parameters.
   */
  public class GetParam implements ParamSplit {
    /**
     * The Matrix id.
     */
    public final int matrixId;
  
    /**
     * Creates a new Get parameter.
     *
     * @param matrixId the matrix id
     */
    public GetParam(int matrixId) {
      this.matrixId = matrixId;
    }
  
    public GetParam() {
      this(-1);
    }
  
    /**
     * Gets matrix id.
     *
     * @return the matrix id
     */
    public int getMatrixId() {
      return matrixId;
    }
  
    @Override public List<PartitionGetParam> split() {
      List<PartitionKey> parts = PSAgentContext.get().getMatrixMetaManager().getPartitions(matrixId);
      int size = parts.size();
  
      List<PartitionGetParam> partParams = new ArrayList<PartitionGetParam>(size);
  
      for (int i = 0; i < size; i++) {
        partParams.add(new PartitionGetParam(matrixId, parts.get(i)));
      }
  
      return partParams;
    }
  }
  