Github user VenturaDelMonte commented on a diff in the pull request:
https://github.com/apache/flink/pull/2756#discussion_r87974146
--- Diff:
flink-streaming-java/src/main/java/org/apache/flink/streaming/api/datastream/WindowedStream.java
---
@@ -800,4 +907,39 @@ public StreamExecutionEnvironment
getExecutionEnvironment() {
public TypeInformation<T> getInputType() {
return input.getType();
}
+
+ private static <T, R, K, W extends Window> ProcessWindowFunction<T, R,
K, W> wrapWindowFunction(final WindowFunction<T, R, K, W> cleanedFunction) {
--- End diff --
Yes, I know about it, but having a WrappingFunction<WindowFunction> would
not be possible here because we need to create a ProcessWindowFunction. Anyway
as I would get rid of the triple nesting
InternalWindowFunction(ProcessWindowFunction(WindowFunction))), this is no
longer an issue. By the way, I added this triple nesting because I thought you
wanted to completely decouple the WindowFunction interface from runtime
internals.
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