[FLINK-3320] Add not operator to CEP's pattern API

• Type: Improvement
• Status: Resolved
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: 1.0.0
• Component/s: Library / CEP
• Assignee: Dawid Wysakowicz
• Reporter: Till Rohrmann
• Created: 02/Feb/16 13:53
• Updated: 01/Oct/19 15:38
• Resolved: 05/May/17 12:11

Description

Currently, CEP's pattern API is lacking a not operator which would you allow to define which events must not occur in a matched pattern. It would be beneficial to add this operator in order to increase the set of supported patterns.

Pattern.begin("start").where(...).followedBy("middle").notFollowedBy("not").where(...).notNext("not2").where(...)

Issue Links

• links to: GitHub Pull Request #3798