query: 2.0.1 - (GREEN) Adjusted implementation to corrected expectations

[demos/kafka/wordcount] / src / main / java / de / juplo / kafka / wordcount / query / QueryStreamProcessor.java

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 bf27e2d..e075eb7 100644 (file)
--- 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;
@@ -68,13 +65,14 @@ public class QueryStreamProcessor
                                                                .withValueSerde(new JsonSerde().copyWithType(User.class)));
                KStream<String, Ranking> rankings = builder
                                .<Key, Ranking>stream(rankingInputTopic)
-                               .map((key, value) -> new KeyValue<>(key.getUsername(), value));
+                               .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)