It is not possible at this moment. FlinkCEP can handle only one Pattern applied statically. There is a JIRA ticket for that: https://issues.apache.org/jira/browse/FLINK-7129 .
> On 19 Dec 2017, at 10:10, Jayant Ameta <wittyam...@gmail.com> wrote: > > I've a datastream of events, and another datastream of patterns. The patterns > are provided by users at runtime, and they need to come via a Kafka topic. I > need to apply each of the pattern on the event stream using Flink-CEP. Is > there a way to get a PatternStream from the DataStream when I don't know the > pattern beforehand? > > https://stackoverflow.com/questions/47883408/apache-flink-how-to-apply-patterns-from-a-source-onto-another-datastream
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