X-Git-Url: https://juplo.de/gitweb/?a=blobdiff_plain;f=src%2Fmain%2Fjava%2Fde%2Fjuplo%2Fkafka%2Fwordcount%2Fcounter%2FCounterStreamProcessor.java;h=d64eb682d3433a163f7b7f0616270b01e1a313e2;hb=cb4a5de56f142603eb63e82f6769616bf5ff058a;hp=324e4245645a7298ca46af8e1452826787ae0832;hpb=c2d06f0efd9e09a9df1c4c536d54ad969cf456eb;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 324e424..d64eb68 100644
--- a/src/main/java/de/juplo/kafka/wordcount/counter/CounterStreamProcessor.java
+++ b/src/main/java/de/juplo/kafka/wordcount/counter/CounterStreamProcessor.java
@@ -8,10 +8,8 @@ import org.apache.kafka.streams.KeyValue;
 import org.apache.kafka.streams.StreamsBuilder;
 import org.apache.kafka.streams.Topology;
 import org.apache.kafka.streams.kstream.KStream;
-import org.apache.kafka.streams.kstream.Materialized;
 import org.apache.kafka.streams.state.KeyValueBytesStoreSupplier;
 import org.apache.kafka.streams.kstream.*;
-import org.springframework.kafka.support.serializer.JsonSerde;
 
 import java.util.Properties;
 
@@ -48,37 +46,15 @@ public class CounterStreamProcessor
 
 		KStream<String, Word> source = builder.stream(
 				inputTopic,
-				Consumed.with(
-						Serdes.String(),
-						new JsonSerde<>(Word.class)
-								.ignoreTypeHeaders()));
+				Consumed.with(Serdes.String(), null));
 
 		source
 				.map((key, word) -> new KeyValue<>(word, word))
-				.groupByKey(Grouped.with(
-						new JsonSerde<>(Word.class)
-								.forKeys()
-								.noTypeInfo(),
-						new JsonSerde<>(Word.class)
-								.noTypeInfo()))
-				.count(Materialized
-						.<Word,Long>as(storeSupplier)
-						.withKeySerde(
-								new JsonSerde<>(Word.class)
-										.forKeys()
-										.noTypeInfo())
-						.withValueSerde(
-								Serdes.Long()))
+				.groupByKey()
+				.count(Materialized.as(storeSupplier))
 				.toStream()
-				.map((word, count) -> new KeyValue<>(word, WordCount.of(word.getUser(), word.getWord(), count)))
-				.to(
-						outputTopic,
-						Produced.with(
-								new JsonSerde<>(Word.class)
-										.forKeys()
-										.noTypeInfo(),
-								new JsonSerde<>(WordCount.class)
-										.noTypeInfo()));
+				.map((word, count) -> new KeyValue<>(word, WordCount.of(word, count)))
+				.to(outputTopic);
 
 		Topology topology = builder.build();
 		log.info("\n\n{}", topology.describe());