Package org.apache.pulsar.functions.api.examples.window

Class WordCountWindowFunction

  • All Implemented Interfaces:
    org.apache.pulsar.functions.api.WindowFunction<java.lang.String,​java.lang.Void>
    public class WordCountWindowFunction
extends java.lang.Object
implements org.apache.pulsar.functions.api.WindowFunction<java.lang.String,​java.lang.Void>
    The classic word count example done using pulsar functions Each input message is a sentence that split into words and each word counted. The built in counter state is used to keep track of the word count in a persistent and consistent manner.

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      java.lang.Void process​(java.util.Collection<org.apache.pulsar.functions.api.Record<java.lang.String>> inputs, org.apache.pulsar.functions.api.WindowContext context)  

      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

    • Constructor Detail

      • WordCountWindowFunction

        public WordCountWindowFunction()

    • Method Detail

      • process

        public java.lang.Void process​(java.util.Collection<org.apache.pulsar.functions.api.Record<java.lang.String>> inputs,
                              org.apache.pulsar.functions.api.WindowContext context)
                       throws java.lang.Exception
        Specified by:
        process in interface org.apache.pulsar.functions.api.WindowFunction<java.lang.String,​java.lang.Void>
        Throws:
        java.lang.Exception