There was one good example of pattern query in the paper made by SASE+ language (in attachment).
Could you easily say how to do that FlickCEP with Scala ? Or is it possible ? That SQL and CEP would also be very interesting, but when it is ready to use ? BR Esa From: vino yang <yanghua1...@gmail.com> Sent: Monday, July 23, 2018 3:00 PM To: Esa Heikkinen <esa.heikki...@student.tut.fi> Cc: Till Rohrmann <trohrm...@apache.org>; Chesnay Schepler <ches...@apache.org>; user <user@flink.apache.org> Subject: Re: FlinkCEP and scientific papers ? Hi Esa, I think the core implementation pattern is still based that paper, there is a package named "nfa"[1] contains the main thought. The latest CEP module added more features and enhanced the old versio. What's more, there is a FLIP-20 which has been accepted, it described how to integrate with SQL and CEP.[2] I think there is no newer paper related to current Flink CEP. [1]: https://github.com/apache/flink/tree/master/flink-libraries/flink-cep/src/main/java/org/apache/flink/cep/nfa [2]: https://cwiki.apache.org/confluence/display/FLINK/FLIP-20:+Integration+of+SQL+and+CEP Thanks, vino. 2018-07-23 16:05 GMT+08:00 Esa Heikkinen <esa.heikki...@student.tut.fi<mailto:esa.heikki...@student.tut.fi>>: Hi Thank you. This was very good paper for me ☺ How much current FlinkCEP works like this (the paper was written 2008) ? Are there exist newer papers related to current FlinkCEP ? BR Esa From: Till Rohrmann <trohrm...@apache.org<mailto:trohrm...@apache.org>> Sent: Wednesday, July 18, 2018 9:38 AM To: vino yang <yanghua1...@gmail.com<mailto:yanghua1...@gmail.com>> Cc: Esa Heikkinen <esa.heikki...@student.tut.fi<mailto:esa.heikki...@student.tut.fi>>; Chesnay Schepler <ches...@apache.org<mailto:ches...@apache.org>>; user <user@flink.apache.org<mailto:user@flink.apache.org>> Subject: Re: FlinkCEP and scientific papers ? You are right Vino, the initial implementation was based on the above mentioned paper. Cheers, Till On Tue, Jul 17, 2018 at 5:34 PM vino yang <yanghua1...@gmail.com<mailto:yanghua1...@gmail.com>> wrote: Hi Esa, AFAIK, the earlier Flink CEP refers to the Paper 《Efficient Pattern Matching over Event Streams》[1]. Flink absorbed two major idea from this paper: 1. NFA-b model on event stream 2. a shared versioned match buffer which is a optimized data structure To Till and Chesnay: Did I missed anything when as time goes on and the development of Flink? If yes, please give your additional remarks. [1]: https://people.cs.umass.edu/~yanlei/publications/sase-sigmod08.pdf Thanks, vino. 2018-07-17 22:01 GMT+08:00 Esa Heikkinen <esa.heikki...@student.tut.fi<mailto:esa.heikki...@student.tut.fi>>: Hi I don’t know this the correct forum to ask, but are there exist some good scientific papers about FlinkCEP (Complex Event Processing) ? I know Flink is based to Stratosphere, but how is it FlinkCEP ? BR Esa
