content: /**
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF licenses this file
   * to you 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
   *
   *   http://www.apache.org/licenses/LICENSE-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.datatorrent.apps.logstream;
  
  import java.util.ArrayList;
  import java.util.HashMap;
  import java.util.Map;
  
  import org.apache.apex.malhar.lib.logs.DimensionObject;
  import org.apache.apex.malhar.lib.util.KeyValPair;
  
  import com.datatorrent.common.util.BaseOperator;
  import com.datatorrent.api.DefaultInputPort;
  import com.datatorrent.api.DefaultOutputPort;
  import com.datatorrent.api.annotation.InputPortFieldAnnotation;
  
  /**
   * Operator that takes in aggregations and converts them to format accepted by redis output operator
   *
   * @param <K> Key of aggregation
   * @param <V> Value of aggregation
   * @since 0.9.4
   */
  public class AggregationsToRedisOperator<K, V> extends BaseOperator
  {
    /**
     * map used to map dimension keys to redis key index
     * key --> dimension key set eg: "2,4"
     * value --> keyIndex eg: "1"
     */
    private HashMap<String, Integer> dimensionToKeyIndexMap;
    private Integer keyIndex;
  
    public void setKeyIndex(Integer keyIndex)
    {
      this.keyIndex = keyIndex;
    }
  
    public void setDimensionToDbIndexMap(HashMap<String, Integer> dimensionTodbIndexMap)
    {
      this.dimensionToKeyIndexMap = dimensionTodbIndexMap;
    }
  
    @InputPortFieldAnnotation(optional=true)
    public final transient DefaultInputPort<HashMap<K, ArrayList<DimensionObject<String>>>> multiWindowDimensionInput = new DefaultInputPort<HashMap<K, ArrayList<DimensionObject<String>>>>()
    {
      @Override
      public void process(HashMap<K, ArrayList<DimensionObject<String>>> tuple)
      {
        for (K dimensionKey : tuple.keySet()) {
          Integer keyInd = dimensionToKeyIndexMap.get(dimensionKey);
          if (keyInd != null) {
            ArrayList<DimensionObject<String>> topList = tuple.get(dimensionKey);
            int numOuts = 0;
            for (DimensionObject<String> item : topList) {
              Map<String, String> out = new HashMap<String, String>();
              String key = new StringBuilder(keyInd.toString()).append("##").append(numOuts++).toString();
              String value = new StringBuilder(item.getVal()).append("##").append(item.getCount().longValue()).toString();
              out.put(key, value);
              keyValueMapOutput.emit(out);
            }
          }
        }
  
      }
  
    };
    @InputPortFieldAnnotation(optional = true)
    public final transient DefaultInputPort<V> valueInput = new DefaultInputPort<V>()
    {
      @Override
      public void process(V tuple)
      {
        if (keyIndex != null) {
          String key = new StringBuilder(keyIndex.toString()).append("##").append("1").toString();
          String value = tuple.toString();
  
          keyValPairOutput.emit(new KeyValPair<String, String>(key, value));
        }
      }
  
    };
    public final transient DefaultOutputPort<Map<String, String>> keyValueMapOutput = new DefaultOutputPort<Map<String, String>>();
    public final transient DefaultOutputPort<KeyValPair<String, String>> keyValPairOutput = new DefaultOutputPort<KeyValPair<String, String>>();
  }
  