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.sona.psf.embedding.bad;
  
  import com.tencent.angel.PartitionKey;
  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.Arrays;
  import java.util.List;
  
  public class W2VPullParam extends GetParam {
  
    int[] indices;
    int numNodePerRow;
    int dimension;
  
    public W2VPullParam(int matrixId, int[] indices, int numNodePerRow, int dimension) {
      super(matrixId);
      this.indices = indices;
      this.numNodePerRow = numNodePerRow;
      this.dimension = dimension;
    }
  
    @Override
    public List<PartitionGetParam> split() {
  
      Arrays.sort(indices);
      List<PartitionKey> pkeys = PSAgentContext.get().getMatrixMetaManager().getPartitions(matrixId);
      List<PartitionGetParam> params = new ArrayList<>();
      int start = 0, end = 0;
      for (PartitionKey pkey : pkeys) {
        int startRow = pkey.getStartRow();
        int endRow   = pkey.getEndRow();
        int startNode = startRow * numNodePerRow;
        int endNode   = endRow * numNodePerRow;
  
        if (start < indices.length && indices[start] >= startNode) {
          while (end < indices.length && indices[end] < endNode)
            end++;
  
          if (end > start) {
            params.add(new W2VPullParatitionParam(matrixId,
                    pkey,
                    indices,
                    numNodePerRow,
                    start,
                    end - start,
                    dimension));
          }
          start = end;
        }
      }
  
  
      return params;
    }
  }
  