nwangtw commented on a change in pull request #3099: Nwang/add streamlet
operator interfaces with grouping v2
URL: https://github.com/apache/incubator-heron/pull/3099#discussion_r235489045
##########
File path:
heron/api/src/java/org/apache/heron/streamlet/impl/StreamletImpl.java
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@@ -505,4 +506,17 @@ public void toSink(Sink<R> sink) {
return customStreamlet;
}
+ /**
+ * Returns a new Streamlet by applying the operator on each element of this
streamlet.
+ * @param operator The operator to be applied
+ * @param grouper The grouper to be applied with the operator
+ * @param <T> The return type of the transform
+ * @return Streamlet containing the output of the operation
+ */
+ @Override
+ public <T> Streamlet<T> applyOperator(IStreamletOperator<R, T> operator,
StreamGrouper grouper) {
Review comment:
done
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