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.hyperanf;
  
  import com.clearspring.analytics.stream.cardinality.HyperLogLogPlus;
  import com.tencent.angel.graph.utils.GraphMatrixUtils;
  import com.tencent.angel.ml.matrix.psf.update.base.PartitionUpdateParam;
  import com.tencent.angel.ml.matrix.psf.update.base.UpdateFunc;
  import com.tencent.angel.ps.storage.vector.ServerLongAnyRow;
  import com.tencent.angel.ps.storage.vector.element.IElement;
  import com.tencent.angel.psagent.matrix.transport.router.operator.ILongKeyAnyValuePartOp;
  import it.unimi.dsi.fastutil.longs.Long2ObjectOpenHashMap;
  
  public class UpdateHyperLogLog extends UpdateFunc {
  
    public UpdateHyperLogLog(UpdateHyperLogLogParam param) {
      super(param);
    }
  
    public UpdateHyperLogLog(int matrixId, Long2ObjectOpenHashMap<HyperLogLogPlus> updates, int p,
        int sp, long seed) {
      super(new UpdateHyperLogLogParam(matrixId, updates, p, sp, seed));
    }
  
    public UpdateHyperLogLog() {
      super(null);
    }
  
    @Override
    public void partitionUpdate(PartitionUpdateParam partParam) {
      UpdateHyperLogLogPartParam param = (UpdateHyperLogLogPartParam) partParam;
      ServerLongAnyRow row = GraphMatrixUtils.getPSLongKeyRow(psContext, param);
  
      ILongKeyAnyValuePartOp split = (ILongKeyAnyValuePartOp) param.getKeyValuePart();
      int p = param.getP();
      int sp = param.getSp();
      long seed = param.getSeed();
      long[] keys = split.getKeys();
      IElement[] values = split.getValues();
  
      row.startWrite();
      try {
        if (keys != null && keys.length > 0 && values != null && values.length > 0) {
          for (int i = 0; i < keys.length; i++) {
            long key = keys[i];
            HyperLogLogPlus value = ((HLLPlusElement) values[i]).getCounter();
            if (!row.exist(key))
              row.set(key, new HyperLogLogPlusElement(key, p, sp, seed));
            HyperLogLogPlusElement hllElem = (HyperLogLogPlusElement) row.get(key);
            if (hllElem.isActive()) {
              hllElem.merge(value);
            }
          }
        }
      } finally {
        row.endWrite();
      }
    }
  }