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dr0i/RecursionStream.java

Created October 12, 2018 13:00
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RecursionStream.java
public class RecursionStream {
public static void main(String... args) {
getAllJsonNodes(node)//
.peek(p -> System.out.println("endpeek" + p))
.forEach(p -> System.out.println("end" + cnt + ":" + p.toString()));
}
private Stream<JsonNode> getAllJsonNodes(JsonNode node) {
cnt++;
Iterable<Entry<String, JsonNode>> iterable = () -> node.fields();
return StreamSupport.stream(iterable.spliterator(), false)
.filter(e -> e.getValue().getNodeType().equals(JsonNodeType.OBJECT))//
.peek(p -> System.out.println("cnt" + cnt + ":" + p))//
.flatMap(m -> getAllJsonNodes(m.getValue()));
}
}
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dr0i commented Oct 12, 2018

"endpeek" and "end" is never printed, why is this?

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dr0i commented Oct 12, 2018 •
edited

Though without the terminalOperation "forEach" it wouldn't start to begin with.

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