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.get.indexed;
  
  import com.tencent.angel.PartitionKey;
  import com.tencent.angel.ml.matrix.psf.get.base.PartitionGetParam;
  import io.netty.buffer.ByteBuf;
  import org.apache.commons.logging.Log;
  import org.apache.commons.logging.LogFactory;
  
  public class LongIndexPartGetParam extends PartitionGetParam {
  
    private final static Log LOG = LogFactory.getLog(LongIndexPartGetParam.class);
    private int rowId;
    private long[] index;
  
    /**
     * @param matrixId matrix id
     * @param rowId    row id
     * @param partKey  partition key
     * @param index    specified index
     */
    public LongIndexPartGetParam(int matrixId, int rowId, PartitionKey partKey, long[] index) {
      super(matrixId, partKey);
      this.rowId = rowId;
      this.index = index;
    }
  
    /**
     * Creates a new partition parameter.
     */
    public LongIndexPartGetParam() {
      this(-1, -1, null, null);
    }
  
    @Override public void serialize(ByteBuf buf) {
      super.serialize(buf);
      buf.writeInt(rowId);
      buf.writeInt(index.length);
  
      if (index.length > 0) {
        for (int i = 0; i < index.length; i++) {
          buf.writeLong(index[i]);
        }
      }
    }
  
    @Override public void deserialize(ByteBuf buf) {
      super.deserialize(buf);
  
      this.rowId = buf.readInt();
      int len = buf.readInt();
  
      if (len > 0) {
        index = new long[len];
        for (int i = 0; i < len; i++) {
          index[i] = buf.readLong();
        }
      }
    }
  
    @Override public int bufferLen() {
      return 8 + super.bufferLen() + 8 * index.length;
    }
  
    public int getRowId() {
      return rowId;
    }
  
    public long[] getIndex() {
      return index;
    }
  }
  