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.aggr.enhance;
  
  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 io.netty.buffer.ByteBuf;
  
  import java.util.ArrayList;
  import java.util.List;
  
  /**
   * `BinaryAggrParam` is the parameter of `BinaryAggrFunc`
   */
  public class BinaryAggrParam extends GetParam {
  
    public static class BinaryPartitionAggrParam extends PartitionGetParam {
      private int rowId1;
      private int rowId2;
  
      public BinaryPartitionAggrParam(int matrixId, PartitionKey partKey, int rowId1, int rowId2) {
        super(matrixId, partKey);
        this.rowId1 = rowId1;
        this.rowId2 = rowId2;
      }
  
      public BinaryPartitionAggrParam() {
        super();
      }
  
      @Override public void serialize(ByteBuf buf) {
        super.serialize(buf);
        buf.writeInt(rowId1);
        buf.writeInt(rowId2);
      }
  
      @Override public void deserialize(ByteBuf buf) {
        super.deserialize(buf);
        rowId1 = buf.readInt();
        rowId2 = buf.readInt();
      }
  
      @Override public int bufferLen() {
        return super.bufferLen() + 8;
      }
  
      public int getRowId1() {
        return rowId1;
      }
  
      public int getRowId2() {
        return rowId2;
      }
    }
  
  
    private final int rowId1;
    private final int rowId2;
  
    public BinaryAggrParam(int matrixId, int rowId1, int rowId2) {
      super(matrixId);
      this.rowId1 = rowId1;
      this.rowId2 = rowId2;
    }
  
    @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 (PartitionKey part : parts) {
        partParams.add(new BinaryPartitionAggrParam(matrixId, part, rowId1, rowId2));
      }
  
      return partParams;
    }
  
  }
  