import lombok.extern.slf4j.Slf4j;
import org.apache.kafka.streams.*;
-import org.apache.kafka.streams.kstream.KStream;
+import org.apache.kafka.streams.kstream.Consumed;
import org.apache.kafka.streams.kstream.Materialized;
import org.apache.kafka.streams.state.KeyValueBytesStoreSupplier;
import org.apache.kafka.streams.state.QueryableStoreTypes;
{
StreamsBuilder builder = new StreamsBuilder();
- KStream<User, Word> source = builder.stream(inputTopic);
-
- source
+ builder
+ .stream(
+ inputTopic,
+ Consumed.with(
+ new JsonSerde<>(User.class),
+ new JsonSerde<>(Word.class)))
.map((key, word) -> new KeyValue<>(word, word))
.groupByKey()
.count(