X-Git-Url: https://juplo.de/gitweb/?a=blobdiff_plain;f=src%2Fmain%2Fjava%2Fde%2Fjuplo%2Fkafka%2Fwordcount%2Fquery%2FQueryStreamProcessor.java;h=e075eb756b2febf506543f4752585fce75c42770;hb=b52ff02b6952dfc708c7c7d94205b5b24afd68f9;hp=dcb123485fd17e35aaa77e1a2b4d8a8aa584fd44;hpb=913c2c4ec0a3584f6be27c8341898d17c4260501;p=demos%2Fkafka%2Fwordcount

diff --git a/src/main/java/de/juplo/kafka/wordcount/query/QueryStreamProcessor.java b/src/main/java/de/juplo/kafka/wordcount/query/QueryStreamProcessor.java
index dcb1234..e075eb7 100644
--- a/src/main/java/de/juplo/kafka/wordcount/query/QueryStreamProcessor.java
+++ b/src/main/java/de/juplo/kafka/wordcount/query/QueryStreamProcessor.java
@@ -5,10 +5,7 @@ import jakarta.annotation.PreDestroy;
 import lombok.extern.slf4j.Slf4j;
 import org.apache.kafka.common.serialization.Serdes;
 import org.apache.kafka.streams.*;
-import org.apache.kafka.streams.kstream.Consumed;
-import org.apache.kafka.streams.kstream.KStream;
-import org.apache.kafka.streams.kstream.KTable;
-import org.apache.kafka.streams.kstream.Materialized;
+import org.apache.kafka.streams.kstream.*;
 import org.apache.kafka.streams.state.HostInfo;
 import org.apache.kafka.streams.state.KeyValueBytesStoreSupplier;
 import org.apache.kafka.streams.state.QueryableStoreTypes;
@@ -60,22 +57,26 @@ public class QueryStreamProcessor
 		KTable<String, User> users = builder
 				.stream(
 						usersInputTopic,
-						Consumed.with(null, new JsonSerde().copyWithType(User.class)))
+						Consumed.with(Serdes.String(), new JsonSerde().copyWithType(User.class)))
 				.toTable(
 						Materialized
 								.<String, User>as(userStoreSupplier)
 								.withKeySerde(Serdes.String())
 								.withValueSerde(new JsonSerde().copyWithType(User.class)));
-		KStream<String, Ranking> rankings = builder.stream(rankingInputTopic);
+		KStream<String, Ranking> rankings = builder
+				.<Key, Ranking>stream(rankingInputTopic)
+				.map((key, value) -> new KeyValue<>(key.getUser(), value));
 
 		rankings
 				.join(users, (ranking, user) -> UserRanking.of(
 						user.getFirstName(),
 						user.getLastName(),
-						ranking.getEntries()))
+						ranking.getEntries()),
+						Joined.keySerde(Serdes.String()))
 				.toTable(
 						Materialized
 								.<String, UserRanking>as(rankingStoreSupplier)
+								.withKeySerde(Serdes.String())
 								.withValueSerde(new JsonSerde().copyWithType(UserRanking.class)));
 
 		Topology topology = builder.build();