X-Git-Url: https://juplo.de/gitweb/?a=blobdiff_plain;f=src%2Fmain%2Fjava%2Fde%2Fjuplo%2Fkafka%2Fwordcount%2Fcounter%2FCounterStreamProcessor.java;h=c983a25020303959c5378747cfe582a276a970aa;hb=bdd62b6b906db3b10ae04d2b4c80e6426a90ad7f;hp=97d460fc7a33bd4c211a00e32546642bfbfb37f8;hpb=419be8ac0668ecb0e34b3a432cf2dcca1c3642dc;p=demos%2Fkafka%2Fwordcount

diff --git a/src/main/java/de/juplo/kafka/wordcount/counter/CounterStreamProcessor.java b/src/main/java/de/juplo/kafka/wordcount/counter/CounterStreamProcessor.java
index 97d460f..c983a25 100644
--- a/src/main/java/de/juplo/kafka/wordcount/counter/CounterStreamProcessor.java
+++ b/src/main/java/de/juplo/kafka/wordcount/counter/CounterStreamProcessor.java
@@ -47,17 +47,13 @@ public class CounterStreamProcessor
 		StreamsBuilder builder = new StreamsBuilder();
 
 		builder
-				.stream(
-						inputTopic,
-						Consumed.with(
-								new JsonSerde<>(User.class),
-								new JsonSerde<>(Word.class)))
+				.stream(inputTopic, Consumed.with(inKeySerde(), inValueSerde()))
 				.map((key, word) -> new KeyValue<>(word, word))
 				.groupByKey()
 				.count(
 						Materialized
 								.<Word, Long>as(storeSupplier)
-								.withKeySerde(new JsonSerde<>().copyWithType(Word.class).forKeys()))
+								.withKeySerde(new JsonSerde<>(Word.class))) // No headers are present: fixed typing is needed!
 				.toStream()
 				.map((word, counter) -> new KeyValue<>(word, WordCounter.of(word, counter)))
 				.to(outputTopic, Produced.with(outKeySerde(), outValueSerde()));
@@ -87,6 +83,16 @@ public class CounterStreamProcessor
 
 
 
+	public static JsonSerde<User> inKeySerde()
+	{
+		return new JsonSerde<>(User.class);
+	}
+
+	public static JsonSerde<Word> inValueSerde()
+	{
+		return new JsonSerde<>(Word.class);
+	}
+
 	public static JsonSerde<Word> outKeySerde()
 	{
 		return serde(true);