showuon commented on a change in pull request #11195:
URL: https://github.com/apache/kafka/pull/11195#discussion_r685830364
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File path:
streams/src/main/java/org/apache/kafka/streams/kstream/BranchedKStream.java
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@@ -69,7 +69,8 @@
* .branch(predicate1, Branched.as("bar")) // "foo-bar"
* .branch(predicate2, Branched.withConsumer(ks->ks.to("A")) // no entry:
a Consumer is provided
* .branch(predicate3, Branched.withFunction(ks->null)) // no entry:
chain function returns null
- * .branch(predicate4) // "foo-4":
name defaults to the branch position
+ * .branch(predicate4, Branched.withFunction(ks->ks)) // "foo-4":
chain function returns non-null value
+ * .branch(predicate5) // "foo-5":
name defaults to the branch position
Review comment:
add an example to explain the function return with non-null result case.
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