twalthr commented on a change in pull request #6815: [FLINK-7062][cep][table]
Added basic support for MATCH_RECOGNIZE
URL: https://github.com/apache/flink/pull/6815#discussion_r224353161
##########
File path:
flink-libraries/flink-cep/src/test/java/org/apache/flink/cep/nfa/AfterMatchSkipITCase.java
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@@ -548,6 +548,32 @@ public boolean filter(Event value) throws Exception {
));
}
+ @Test(expected = FlinkRuntimeException.class)
+ public void testSkipToFirstElementOfMatch() throws Exception {
+ List<StreamRecord<Event>> streamEvents = new ArrayList<>();
+
+ Event a1 = new Event(1, "a1", 0.0);
+
+ streamEvents.add(new StreamRecord<Event>(a1));
+
+ Pattern<Event, ?> pattern = Pattern.<Event>begin("a",
+
AfterMatchSkipStrategy.skipToFirst("a").throwExceptionOnMiss()
+ ).where(
+ new SimpleCondition<Event>() {
+
+ @Override
+ public boolean filter(Event value) throws
Exception {
+ return value.getName().contains("a");
+ }
+ }
+ );
+ NFA<Event> nfa = compile(pattern, false);
+
+ feedNFA(streamEvents, nfa, pattern.getAfterMatchSkipStrategy());
+
+ //exception should be thrown
Review comment:
It would be a better comment if you explain *why* an exception should be
thrown.
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