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 org.apache.apex.malhar.contrib.redis;
  
  import java.util.HashMap;
  import java.util.Map;
  import org.apache.commons.lang.mutable.MutableDouble;
  import org.apache.commons.lang.mutable.MutableLong;
  
  /**
   * Provides routines of number aggregation. Not to be exported outside of this package
   * @since 0.9.3
   */
  class NumberSummation<K, V>
  {
    private AbstractRedisAggregateOutputOperator<?> operator;
    private Map<Object, Object> dataMap;
  
    NumberSummation(AbstractRedisAggregateOutputOperator<?> operator, Map<Object, Object> dataMap)
    {
      this.operator = operator;
      this.dataMap = dataMap;
    }
  
    protected Number convertToNumber(Object o)
    {
      if (o == null) {
        return null;
      } else if (o instanceof MutableDouble || o instanceof MutableLong) {
        return (Number)o;
      } else if (o instanceof Double || o instanceof Float) {
        return new MutableDouble((Number)o);
      } else if (o instanceof Number) {
        return new MutableLong((Number)o);
      } else {
        return new MutableDouble(o.toString());
      }
    }
  
    @SuppressWarnings("unchecked")
    public void storeAggregate()
    {
      for (Map.Entry<Object, Object> entry : dataMap.entrySet()) {
        Object key = entry.getKey();
        Object value = entry.getValue();
        if (value instanceof Map) {
          for (Map.Entry<Object, Object> entry1 : ((Map<Object, Object>)value).entrySet()) {
            String field = entry1.getKey().toString();
            Object hvalue = entry1.getValue();
            if (hvalue instanceof Number) {
              operator.getStore().hincrByFloat(key.toString(), field, ((Number)hvalue).doubleValue());
            } else {
              operator.getStore().hincrByFloat(key.toString(), field, Double.parseDouble(hvalue.toString()));
            }
          }
        } else {
          if (value instanceof Number) {
            operator.getStore().incrByFloat(key.toString(), ((Number)value).doubleValue());
          } else {
            operator.getStore().incrByFloat(key.toString(), Double.parseDouble(value.toString()));
          }
        }
      }
      dataMap.clear();
    }
  
    @SuppressWarnings("unchecked")
    public void process(K key, V value) throws RuntimeException
    {
      if (value instanceof Map) {
        Object o = dataMap.get(key);
        if (o == null) {
          o = new HashMap<Object, Object>();
          dataMap.put(key, o);
        }
  
        if (!(o instanceof Map)) {
          throw new RuntimeException("Values of unexpected type in data map. Expecting Map");
        }
        Map<Object, Object> map = (Map<Object, Object>)o;
        for (Map.Entry<Object, Object> entry1 : ((Map<Object, Object>)value).entrySet()) {
          Object field = entry1.getKey();
          Number oldVal = (Number)map.get(field);
          if (oldVal == null) {
            map.put(field, convertToNumber(entry1.getValue()));
          } else if (oldVal instanceof MutableDouble) {
            ((MutableDouble)oldVal).add(convertToNumber(entry1.getValue()));
          } else if (oldVal instanceof MutableLong) {
            ((MutableLong)oldVal).add(convertToNumber(entry1.getValue()));
          } else {
            throw new RuntimeException("Values of unexpected type in data map value field type. Expecting MutableLong or MutableDouble");
          }
        }
      } else {
        Number oldVal = convertToNumber(dataMap.get(key));
        if (oldVal == null) {
          dataMap.put(key, convertToNumber(value));
        } else {
          if (oldVal instanceof MutableDouble) {
            ((MutableDouble)oldVal).add(convertToNumber(value));
          } else if (oldVal instanceof MutableLong) {
            ((MutableLong)oldVal).add(convertToNumber(value));
          } else {
            // should not get here
            throw new RuntimeException("Values of unexpected type in data map value type. Expecting MutableLong or MutableDouble");
          }
        }
      }
    }
  }
  