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.update.update;
  
  import com.tencent.angel.PartitionKey;
  import com.tencent.angel.ml.math2.vector.Vector;
  import com.tencent.angel.ml.matrix.psf.update.base.PartitionUpdateParam;
  import com.tencent.angel.ml.matrix.psf.update.base.UpdateFunc;
  import com.tencent.angel.ml.matrix.psf.update.base.UpdateParam;
  import com.tencent.angel.ps.storage.matrix.ServerMatrix;
  import com.tencent.angel.ps.storage.partition.RowBasedPartition;
  import com.tencent.angel.ps.storage.vector.ServerRow;
  import com.tencent.angel.ps.storage.vector.ServerRowUtils;
  import com.tencent.angel.psagent.matrix.oplog.cache.RowUpdateSplit;
  import java.util.List;
  
  /**
   * Increment PS matrix rows
   */
  public class IncrementRows extends UpdateFunc {
  
    /**
     * Create a new UpdateParam
     */
    public IncrementRows(UpdateParam param) {
      super(param);
    }
  
    public IncrementRows() {
      this(null);
    }
  
    @Override
    public void partitionUpdate(PartitionUpdateParam partParam) {
      PartIncrementRowsParam partUpdateRowsParam = (PartIncrementRowsParam) partParam;
      List<RowUpdateSplit> updates = partUpdateRowsParam.getUpdates();
      for (RowUpdateSplit update : updates) {
        getVector(partUpdateRowsParam.getMatrixId(), update.getRowId(), partParam.getPartKey())
            .iadd(update.getVector());
      }
    }
  
    /**
     * Get inner vector from server matrix, it is can be only use in RowBasedPartition and basic row
     * type
     *
     * @param matrixId matrix id
     * @param rowId row id
     * @param part partition key
     * @return inner vector
     */
    protected Vector getVector(int matrixId, int rowId, PartitionKey part) {
      ServerMatrix matrix = psContext.getMatrixStorageManager().getMatrix(matrixId);
      ServerRow psRow = ((RowBasedPartition) matrix.getPartition(part.getPartitionId()))
          .getRow(rowId);
      return ServerRowUtils.getVector(psRow);
    }
  }
  