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.graph.client.psf.sample.samplenodefeats;
  
  import com.tencent.angel.PartitionKey;
  import com.tencent.angel.ml.matrix.MatrixMeta;
  import com.tencent.angel.ml.matrix.psf.get.base.GetParam;
  import com.tencent.angel.ml.matrix.psf.get.base.PartitionGetParam;
  import com.tencent.angel.psagent.PSAgentContext;
  import java.util.ArrayList;
  import java.util.List;
  
  public class SampleNodeFeatParam extends GetParam {
  
    /**
     * Sample neighbor number
     */
    protected final int count;
  
    public SampleNodeFeatParam(int matrixId, int count) {
      super(matrixId);
      this.count = count;
    }
  
    public SampleNodeFeatParam() {
      this(-1, -1);
    }
  
    public int getCount() {
      return count;
    }
  
    @Override
    public List<PartitionGetParam> split() {
      // Get matrix meta
      MatrixMeta meta = PSAgentContext.get().getMatrixMetaManager().getMatrixMeta(matrixId);
      PartitionKey[] partitions = meta.getPartitionKeys();
  
      // sample (count / partNum + 1) in every partition randomly
      int eachSize = count / partitions.length + 1;
  
      // Generate rpc params
      List<PartitionGetParam> partParams = new ArrayList<>(partitions.length);
      for (int i = 0; i < partitions.length; i++) {
        partParams.add(new PartSampleNodeFeatParam(matrixId, partitions[i], eachSize));
      }
  
      return partParams;
    }
  }
  