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.client.node2vec.updatefuncs.pushneighbor;
  
  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.vector.ServerLongAnyRow;
  import com.tencent.angel.ps.storage.vector.element.LongArrayElement;
  import it.unimi.dsi.fastutil.longs.Long2ObjectMap;
  import it.unimi.dsi.fastutil.longs.Long2ObjectOpenHashMap;
  import it.unimi.dsi.fastutil.objects.ObjectIterator;
  
  public class PushNeighbor extends UpdateFunc {
  
    /**
     * Create a new UpdateParam
     */
    public PushNeighbor(UpdateParam param) {
      super(param);
    }
  
    public PushNeighbor() {
      super(null);
    }
  
    @Override
    public void partitionUpdate(PartitionUpdateParam partParam) {
      PushNeighborPartitionParam pparam = (PushNeighborPartitionParam) partParam;
      ServerLongAnyRow row = (ServerLongAnyRow) psContext.getMatrixStorageManager()
          .getRow(pparam.getPartKey(), 0);
      Long2ObjectOpenHashMap<long[]> nodeIdToNeighborIndices = pparam.getNodeIdToNeighborIndices();
  
      ObjectIterator<Long2ObjectMap.Entry<long[]>> iter = nodeIdToNeighborIndices
          .long2ObjectEntrySet().iterator();
      row.startWrite();
      try {
        while (iter.hasNext()) {
          Long2ObjectMap.Entry<long[]> entry = iter.next();
          row.set(entry.getLongKey(), new LongArrayElement(entry.getValue()));
        }
      } finally {
        row.endWrite();
      }
    }
  }
  