本文整理汇总了Java中org.apache.storm.hbase.topology.WordCountValueMapper类的典型用法代码示例。如果您正苦于以下问题：Java WordCountValueMapper类的具体用法？Java WordCountValueMapper怎么用？Java WordCountValueMapper使用的例子？那么恭喜您, 这里精选的类代码示例或许可以为您提供帮助。
WordCountValueMapper类属于org.apache.storm.hbase.topology包，在下文中一共展示了WordCountValueMapper类的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Java代码示例。
示例1: buildTopology
import org.apache.storm.hbase.topology.WordCountValueMapper; //导入依赖的package包/类
public static StormTopology buildTopology(String hbaseRoot){
Fields fields = new Fields("word", "count");
FixedBatchSpout spout = new FixedBatchSpout(fields, 4,
new Values("storm", 1),
new Values("trident", 1),
new Values("needs", 1),
new Values("javadoc", 1)
);
spout.setCycle(true);
TridentHBaseMapper tridentHBaseMapper = new SimpleTridentHBaseMapper()
.withColumnFamily("cf")
.withColumnFields(new Fields("word"))
.withCounterFields(new Fields("count"))
.withRowKeyField("word");
HBaseValueMapper rowToStormValueMapper = new WordCountValueMapper();
HBaseProjectionCriteria projectionCriteria = new HBaseProjectionCriteria();
projectionCriteria.addColumn(new HBaseProjectionCriteria.ColumnMetaData("cf", "count"));
HBaseState.Options options = new HBaseState.Options()
.withConfigKey(hbaseRoot)
.withDurability(Durability.SYNC_WAL)
.withMapper(tridentHBaseMapper)
.withProjectionCriteria(projectionCriteria)
.withRowToStormValueMapper(rowToStormValueMapper)
.withTableName("WordCount");
StateFactory factory = new HBaseStateFactory(options);
TridentTopology topology = new TridentTopology();
Stream stream = topology.newStream("spout1", spout);
stream.partitionPersist(factory, fields, new HBaseUpdater(), new Fields());
TridentState state = topology.newStaticState(factory);
stream = stream.stateQuery(state, new Fields("word"), new HBaseQuery(), new Fields("columnName","columnValue"));
stream.each(new Fields("word","columnValue"), new PrintFunction(), new Fields());
return topology.build();
}