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.psagent.matrix.oplog.cache;
  
  import com.tencent.angel.ml.math2.VFactory;
  import com.tencent.angel.ml.matrix.RowType;
  import io.netty.buffer.ByteBuf;
  
  /**
   * Row split of dense int row update.
   */
  public class DenseLongRowUpdateSplit extends RowUpdateSplit {
  
    /**
     * values of row
     */
    private final long[] values;
  
    /**
     * Create a new dense int row split update
     *
     * @param start start position
     * @param end end position
     * @param values values of row update
     */
    public DenseLongRowUpdateSplit(int rowIndex, int start, int end, long[] values) {
      super(rowIndex, RowType.T_LONG_DENSE, start, end);
      this.values = values;
    }
  
    public DenseLongRowUpdateSplit() {
      this(-1, -1, -1, null);
    }
  
    /**
     * Get values of row update
     *
     * @return int[] values of row update
     */
    public long[] getValues() {
      return values;
    }
  
    @Override
    public void serialize(ByteBuf buf) {
      super.serialize(buf);
      buf.writeInt(end - start);
      for (int i = start; i < end; i++) {
        buf.writeLong(values[i]);
      }
    }
  
    @Override
    public void deserialize(ByteBuf buf) {
      super.deserialize(buf);
      long[] data = new long[buf.readInt()];
      for (int i = 0; i < data.length; i++) {
        data[i] = buf.readLong();
      }
      vector = VFactory.denseLongVector(data);
    }
  
  
    @Override
    public int bufferLen() {
      return 4 + super.bufferLen() + (end - start) * 8;
    }
  }
  