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.graph.psf.neighbors.samplebyaliastable.samplealiastable;
  
  import com.tencent.angel.ml.matrix.psf.get.base.PartitionGetResult;
  import io.netty.buffer.ByteBuf;
  
  public class PartGetNeighborAliasTableResult extends PartitionGetResult {
      private int partId;
      private long[][] nodeIdToNeighbors;
  
      public PartGetNeighborAliasTableResult(int partitionId, long[][] nodeIdToNeighbors) {
          this.partId = partitionId;
          this.nodeIdToNeighbors = nodeIdToNeighbors;
          assert (nodeIdToNeighbors != null);
      }
  
      public PartGetNeighborAliasTableResult() {
          this(-1, null);
      }
  
      public long[][] getNodeIdToNeighbors() {
          return nodeIdToNeighbors;
      }
  
      public void setNodeIdToNeighbors(
              long[][] nodeIdToNeighbors) {
          this.nodeIdToNeighbors = nodeIdToNeighbors;
      }
  
      public int getPartId() {
          return partId;
      }
  
      @Override
      public void serialize(ByteBuf output) {
          output.writeInt(partId);
          output.writeInt(nodeIdToNeighbors.length);
          for (int i = 0; i < nodeIdToNeighbors.length; i++) {
              if (nodeIdToNeighbors[i] == null) {
                  output.writeInt(0);
              } else {
                  output.writeInt(nodeIdToNeighbors[i].length);
                  for (long value : nodeIdToNeighbors[i]) {
                      output.writeLong(value);
                  }
              }
          }
      }
  
      @Override
      public void deserialize(ByteBuf input) {
          partId = input.readInt();
          int size = input.readInt();
          nodeIdToNeighbors = new long[size][];
  
          for (int i = 0; i < size; i++) {
              long[] neighbors = new long[input.readInt()];
              for (int j = 0; j < neighbors.length; j++) {
                  neighbors[j] = input.readLong();
              }
              nodeIdToNeighbors[i] = neighbors;
          }
      }
  
      @Override
      public int bufferLen() {
          int len = 8;
          for (int i = 0; i < nodeIdToNeighbors.length; i++) {
              if (nodeIdToNeighbors[i] == null) {
                  len += 4 ;
              } else {
                  len += 4 ;
                  len += 8 * nodeIdToNeighbors[i].length;
              }
          }
          return len;
      }
  }
  