| /** |
| * 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.contrib.redis; |
| |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| /** |
| * This class provides an output adapter that takes maps as tuples. |
| * if the values in the tuples are maps, the operator will increment the values in the tuples in redis. |
| * Otherwise, it will increment the value as is. |
| * <p></p> |
| * @displayName Redis Number Summation Key Val Pair Output |
| * @category Output |
| * @tags redis, key value |
| * |
| * @param <K> The key type |
| * @param <V> The value type |
| * @since 0.3.2 |
| */ |
| public class RedisNumberSummationMapOutputOperator<K, V> extends AbstractRedisAggregateOutputOperator<Map<K, V>> |
| { |
| private Map<Object, Object> dataMap = new HashMap<Object, Object>(); |
| private transient NumberSummation<K,V> numberSummation = new NumberSummation<K,V>(this, dataMap); |
| |
| @Override |
| public void processTuple(Map<K, V> t) |
| { |
| for (Map.Entry<K, V> entry : t.entrySet()) { |
| numberSummation.process(entry.getKey(), entry.getValue()); |
| } |
| } |
| |
| @Override |
| public void storeAggregate() |
| { |
| numberSummation.storeAggregate(); |
| } |
| |
| } |