Package org.apache.storm.redis.topology

Class WordCounter

java.lang.Object
org.apache.storm.redis.topology.WordCounter
All Implemented Interfaces:
Serializable, IBasicBolt, IComponent
public class WordCounter extends Object implements IBasicBolt
See Also:

  • Constructor Details

    • WordCounter

      public WordCounter()

  • Method Details

    • prepare

      public void prepare(Map<String,Object> topoConf, TopologyContext context)
      Specified by:
      prepare in interface IBasicBolt

    • execute

      public void execute(Tuple input, BasicOutputCollector collector)
      Description copied from interface: IBasicBolt
      Process the input tuple and optionally emit new tuples based on the input tuple.

      All acking is managed for you. Throw a FailedException if you want to fail the tuple.

      Specified by:
      execute in interface IBasicBolt

    • cleanup

      public void cleanup()
      Specified by:
      cleanup in interface IBasicBolt

    • declareOutputFields

      public void declareOutputFields(OutputFieldsDeclarer declarer)
      Description copied from interface: IComponent
      Declare the output schema for all the streams of this topology.
      Specified by:
      declareOutputFields in interface IComponent
      Parameters:
      declarer - this is used to declare output stream ids, output fields, and whether or not each output stream is a direct stream

    • getComponentConfiguration

      public Map<String,Object> getComponentConfiguration()
      Description copied from interface: IComponent
      Declare configuration specific to this component. Only a subset of the "topology.*" configs can be overridden. The component configuration can be further overridden when constructing the topology using TopologyBuilder
      Specified by:
      getComponentConfiguration in interface IComponent