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.model.neighbor.dynamic.psf.init;
  
  import com.tencent.angel.PartitionKey;
  import com.tencent.angel.graph.model.neighbor.dynamic.DynamicNeighborElement;
  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.ServerLongAnyRow;
  import com.tencent.angel.ps.storage.vector.element.ByteArrayElement;
  import com.tencent.angel.ps.storage.vector.element.IElement;
  import com.tencent.angel.psagent.PSAgentContext;
  import it.unimi.dsi.fastutil.longs.Long2ObjectMap;
  import it.unimi.dsi.fastutil.objects.ObjectIterator;
  
  import java.util.ArrayList;
  import java.util.List;
  
  /**
   * Init node neighbors for long type node id
   */
  public class GetSort extends UpdateFunc {
  
    /**
     * Create a new UpdateParam
     */
    public GetSort(UpdateParam param) { super(param); }
  
    public GetSort() { this(null); }
  
    public static class GetSortParam extends UpdateParam {
      /**
       * Instantiates a new Zero updater param.
       *
       * @param matrixId    the matrix id
       * @param updateClock the update clock
       */
      public GetSortParam(int matrixId, boolean updateClock) {
        super(matrixId, updateClock);
      }
  
      @Override public List<PartitionUpdateParam> split() {
        List<PartitionKey> partList =
                PSAgentContext.get().getMatrixMetaManager().getPartitions(matrixId);
        int size = partList.size();
        List<PartitionUpdateParam> partParamList = new ArrayList<PartitionUpdateParam>(size);
        for (int i = 0; i < size; i++) {
          partParamList.add(new GetSort.GetSortPartitionParam(matrixId, partList.get(i), updateClock));
        }
  
        return partParamList;
      }
    }
  
    public static class GetSortPartitionParam extends PartitionUpdateParam {
      /**
       * Creates new partition updater parameter.
       *
       * @param matrixId    the matrix id
       * @param partKey     the part key
       * @param updateClock the update clock
       */
      public GetSortPartitionParam(int matrixId, PartitionKey partKey, boolean updateClock) {
        super(matrixId, partKey, updateClock);
      }
  
      /**
       * Creates a new partition updater parameter by default.
       */
      public GetSortPartitionParam() {
        super();
      }
    }
  
    @Override
    public void partitionUpdate(PartitionUpdateParam partParam) {
      ServerMatrix matrix = psContext.getMatrixStorageManager().getMatrix(partParam.getMatrixId());
      RowBasedPartition part = (RowBasedPartition) matrix
              .getPartition(partParam.getPartKey().getPartitionId());
      ServerLongAnyRow row = (ServerLongAnyRow) part.getRow(0);
      ObjectIterator<Long2ObjectMap.Entry<IElement>> it = row.getStorage().iterator();
  
      row.startWrite();
      try {
        while (it.hasNext()) {
          Long2ObjectMap.Entry<IElement> next = it.next();
          DynamicNeighborElement ele = (DynamicNeighborElement) next.getValue();
          if (ele != null) {
            ele.trans();
          }
        }
      } finally {
        row.endWrite();
      }
    }
  }
  