Github user aljoscha commented on a diff in the pull request:
https://github.com/apache/flink/pull/4320#discussion_r132445880
--- Diff:
flink-libraries/flink-cep/src/main/java/org/apache/flink/cep/PatternStream.java
---
@@ -107,13 +113,54 @@
* function.
*/
public <R> SingleOutputStreamOperator<R> select(final
PatternSelectFunction<T, R> patternSelectFunction, TypeInformation<R>
outTypeInfo) {
- SingleOutputStreamOperator<Map<String, List<T>>> patternStream =
-
CEPOperatorUtils.createPatternStream(inputStream, pattern);
+ return CEPOperatorUtils.createPatternStream(inputStream,
pattern, clean(patternSelectFunction), outTypeInfo);
+ }
+
+ /**
+ * Applies a select function to the detected pattern sequence. For each
pattern sequence the
+ * provided {@link PatternSelectFunction} is called. The pattern select
function can produce
+ * exactly one resulting element.
+ *
+ * <p>Applies a timeout function to a partial pattern sequence which
has timed out. For each
+ * partial pattern sequence the provided {@link PatternTimeoutFunction}
is called. The pattern
+ * timeout function can produce exactly one resulting element.
+ *
+ * <p>You can get the stream of late data using
--- End diff --
Maybe something like "You can get the stream of timed-out data resulting
from the {@link PatternTimeoutFunction} using ..."
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