Hi Puneet, … not able to answer your question, but I would be curious to also print out the value with your diagnostic message. … assuming we’ll see an ‘a’ and a ‘b’ for both filters resp.
… simple explanation would be that the filters are applied to all input, regardless of the pattern matching that follow the input filtering (just guessing) Thias From: Puneet Duggal <puneetduggal1...@gmail.com> Sent: Mittwoch, 27. Oktober 2021 11:12 To: user <user@flink.apache.org> Subject: Duplicate Calls to Cep Filter Hi, I am facing an issue where a single event is causing execution of a cep filter multiple times. I went through this video<https://www.youtube.com/watch?v=XRyl0RGWs1M> explaining automata formation from pattern sequence but it still does not explain the behaviour that I am facing. Following is the sample pattern for which I am testing this behaviour. Pattern<String, ?> innerPattern = Pattern .<String>begin("start") .where(new SimpleCondition<String>() { @Override public boolean filter(String value) throws Exception { System.out.println("In the beginning"); return value.equals("a"); } }) .followedBy("middle") .where(new SimpleCondition<String>() { @Override public boolean filter(String value) throws Exception { System.out.println("In the middle"); return value.equals("b"); } }); On passing events a and b to this pattern.. result is 1> a In the beginning 1> b In the middle In the middle In the beginning Matched 3> {start=[a], middle=[b]} As you can see ... on ingestion of b middle pattern is getting called twice. Any ideas of this behaviour. Thanks and regards, Puneet Duggal Diese Nachricht ist ausschliesslich für den Adressaten bestimmt und beinhaltet unter Umständen vertrauliche Mitteilungen. Da die Vertraulichkeit von e-Mail-Nachrichten nicht gewährleistet werden kann, übernehmen wir keine Haftung für die Gewährung der Vertraulichkeit und Unversehrtheit dieser Mitteilung. Bei irrtümlicher Zustellung bitten wir Sie um Benachrichtigung per e-Mail und um Löschung dieser Nachricht sowie eventueller Anhänge. Jegliche unberechtigte Verwendung oder Verbreitung dieser Informationen ist streng verboten. This message is intended only for the named recipient and may contain confidential or privileged information. As the confidentiality of email communication cannot be guaranteed, we do not accept any responsibility for the confidentiality and the intactness of this message. If you have received it in error, please advise the sender by return e-mail and delete this message and any attachments. Any unauthorised use or dissemination of this information is strictly prohibited.
