Examples with TransformerSupplier org.apache.kafka.streams.kstream.TransformerSupplier used on opensource projects

Example 6 with TransformerSupplier

use of org.apache.kafka.streams.kstream.TransformerSupplier in project kafka by apache.

the class KStreamImplTest method shouldPreserveSerdesForOperators.

// specifically testing the deprecated variant
@SuppressWarnings({ "rawtypes", "deprecation" })
@Test
public void shouldPreserveSerdesForOperators() {
    final StreamsBuilder builder = new StreamsBuilder();
    final KStream<String, String> stream1 = builder.stream(Collections.singleton("topic-1"), stringConsumed);
    final KTable<String, String> table1 = builder.table("topic-2", stringConsumed);
    final GlobalKTable<String, String> table2 = builder.globalTable("topic-2", stringConsumed);
    final ConsumedInternal<String, String> consumedInternal = new ConsumedInternal<>(stringConsumed);
    final KeyValueMapper<String, String, String> selector = (key, value) -> key;
    final KeyValueMapper<String, String, Iterable<KeyValue<String, String>>> flatSelector = (key, value) -> Collections.singleton(new KeyValue<>(key, value));
    final ValueMapper<String, String> mapper = value -> value;
    final ValueMapper<String, Iterable<String>> flatMapper = Collections::singleton;
    final ValueJoiner<String, String, String> joiner = (value1, value2) -> value1;
    assertEquals(((AbstractStream) stream1.filter((key, value) -> false)).keySerde(), consumedInternal.keySerde());
    assertEquals(((AbstractStream) stream1.filter((key, value) -> false)).valueSerde(), consumedInternal.valueSerde());
    assertEquals(((AbstractStream) stream1.filterNot((key, value) -> false)).keySerde(), consumedInternal.keySerde());
    assertEquals(((AbstractStream) stream1.filterNot((key, value) -> false)).valueSerde(), consumedInternal.valueSerde());
    assertNull(((AbstractStream) stream1.selectKey(selector)).keySerde());
    assertEquals(((AbstractStream) stream1.selectKey(selector)).valueSerde(), consumedInternal.valueSerde());
    assertNull(((AbstractStream) stream1.map(KeyValue::new)).keySerde());
    assertNull(((AbstractStream) stream1.map(KeyValue::new)).valueSerde());
    assertEquals(((AbstractStream) stream1.mapValues(mapper)).keySerde(), consumedInternal.keySerde());
    assertNull(((AbstractStream) stream1.mapValues(mapper)).valueSerde());
    assertNull(((AbstractStream) stream1.flatMap(flatSelector)).keySerde());
    assertNull(((AbstractStream) stream1.flatMap(flatSelector)).valueSerde());
    assertEquals(((AbstractStream) stream1.flatMapValues(flatMapper)).keySerde(), consumedInternal.keySerde());
    assertNull(((AbstractStream) stream1.flatMapValues(flatMapper)).valueSerde());
    assertNull(((AbstractStream) stream1.transform(transformerSupplier)).keySerde());
    assertNull(((AbstractStream) stream1.transform(transformerSupplier)).valueSerde());
    assertEquals(((AbstractStream) stream1.transformValues(valueTransformerSupplier)).keySerde(), consumedInternal.keySerde());
    assertNull(((AbstractStream) stream1.transformValues(valueTransformerSupplier)).valueSerde());
    assertNull(((AbstractStream) stream1.merge(stream1)).keySerde());
    assertNull(((AbstractStream) stream1.merge(stream1)).valueSerde());
    assertEquals(((AbstractStream) stream1.through("topic-3")).keySerde(), consumedInternal.keySerde());
    assertEquals(((AbstractStream) stream1.through("topic-3")).valueSerde(), consumedInternal.valueSerde());
    assertEquals(((AbstractStream) stream1.through("topic-3", Produced.with(mySerde, mySerde))).keySerde(), mySerde);
    assertEquals(((AbstractStream) stream1.through("topic-3", Produced.with(mySerde, mySerde))).valueSerde(), mySerde);
    assertEquals(((AbstractStream) stream1.repartition()).keySerde(), consumedInternal.keySerde());
    assertEquals(((AbstractStream) stream1.repartition()).valueSerde(), consumedInternal.valueSerde());
    assertEquals(((AbstractStream) stream1.repartition(Repartitioned.with(mySerde, mySerde))).keySerde(), mySerde);
    assertEquals(((AbstractStream) stream1.repartition(Repartitioned.with(mySerde, mySerde))).valueSerde(), mySerde);
    assertEquals(((AbstractStream) stream1.groupByKey()).keySerde(), consumedInternal.keySerde());
    assertEquals(((AbstractStream) stream1.groupByKey()).valueSerde(), consumedInternal.valueSerde());
    assertEquals(((AbstractStream) stream1.groupByKey(Grouped.with(mySerde, mySerde))).keySerde(), mySerde);
    assertEquals(((AbstractStream) stream1.groupByKey(Grouped.with(mySerde, mySerde))).valueSerde(), mySerde);
    assertNull(((AbstractStream) stream1.groupBy(selector)).keySerde());
    assertEquals(((AbstractStream) stream1.groupBy(selector)).valueSerde(), consumedInternal.valueSerde());
    assertEquals(((AbstractStream) stream1.groupBy(selector, Grouped.with(mySerde, mySerde))).keySerde(), mySerde);
    assertEquals(((AbstractStream) stream1.groupBy(selector, Grouped.with(mySerde, mySerde))).valueSerde(), mySerde);
    assertNull(((AbstractStream) stream1.join(stream1, joiner, JoinWindows.of(Duration.ofMillis(100L)))).keySerde());
    assertNull(((AbstractStream) stream1.join(stream1, joiner, JoinWindows.of(Duration.ofMillis(100L)))).valueSerde());
    assertEquals(((AbstractStream) stream1.join(stream1, joiner, JoinWindows.of(Duration.ofMillis(100L)), StreamJoined.with(mySerde, mySerde, mySerde))).keySerde(), mySerde);
    assertNull(((AbstractStream) stream1.join(stream1, joiner, JoinWindows.of(Duration.ofMillis(100L)), StreamJoined.with(mySerde, mySerde, mySerde))).valueSerde());
    assertNull(((AbstractStream) stream1.leftJoin(stream1, joiner, JoinWindows.of(Duration.ofMillis(100L)))).keySerde());
    assertNull(((AbstractStream) stream1.leftJoin(stream1, joiner, JoinWindows.of(Duration.ofMillis(100L)))).valueSerde());
    assertEquals(((AbstractStream) stream1.leftJoin(stream1, joiner, JoinWindows.of(Duration.ofMillis(100L)), StreamJoined.with(mySerde, mySerde, mySerde))).keySerde(), mySerde);
    assertNull(((AbstractStream) stream1.leftJoin(stream1, joiner, JoinWindows.of(Duration.ofMillis(100L)), StreamJoined.with(mySerde, mySerde, mySerde))).valueSerde());
    assertNull(((AbstractStream) stream1.outerJoin(stream1, joiner, JoinWindows.of(Duration.ofMillis(100L)))).keySerde());
    assertNull(((AbstractStream) stream1.outerJoin(stream1, joiner, JoinWindows.of(Duration.ofMillis(100L)))).valueSerde());
    assertEquals(((AbstractStream) stream1.outerJoin(stream1, joiner, JoinWindows.of(Duration.ofMillis(100L)), StreamJoined.with(mySerde, mySerde, mySerde))).keySerde(), mySerde);
    assertNull(((AbstractStream) stream1.outerJoin(stream1, joiner, JoinWindows.of(Duration.ofMillis(100L)), StreamJoined.with(mySerde, mySerde, mySerde))).valueSerde());
    assertEquals(((AbstractStream) stream1.join(table1, joiner)).keySerde(), consumedInternal.keySerde());
    assertNull(((AbstractStream) stream1.join(table1, joiner)).valueSerde());
    assertEquals(((AbstractStream) stream1.join(table1, joiner, Joined.with(mySerde, mySerde, mySerde))).keySerde(), mySerde);
    assertNull(((AbstractStream) stream1.join(table1, joiner, Joined.with(mySerde, mySerde, mySerde))).valueSerde());
    assertEquals(((AbstractStream) stream1.leftJoin(table1, joiner)).keySerde(), consumedInternal.keySerde());
    assertNull(((AbstractStream) stream1.leftJoin(table1, joiner)).valueSerde());
    assertEquals(((AbstractStream) stream1.leftJoin(table1, joiner, Joined.with(mySerde, mySerde, mySerde))).keySerde(), mySerde);
    assertNull(((AbstractStream) stream1.leftJoin(table1, joiner, Joined.with(mySerde, mySerde, mySerde))).valueSerde());
    assertEquals(((AbstractStream) stream1.join(table2, selector, joiner)).keySerde(), consumedInternal.keySerde());
    assertNull(((AbstractStream) stream1.join(table2, selector, joiner)).valueSerde());
    assertEquals(((AbstractStream) stream1.leftJoin(table2, selector, joiner)).keySerde(), consumedInternal.keySerde());
    assertNull(((AbstractStream) stream1.leftJoin(table2, selector, joiner)).valueSerde());
}