[FLINK-16010] Support notFollowedBy with interval as the last part of a Pattern

• Type: New Feature
• Status: Closed
• Priority: Not a Priority
• Resolution: Duplicate
• Affects Version/s: 1.9.0
• Component/s: Library / CEP
• Labels: auto-deprioritized-major auto-deprioritized-minor
• Assignee: Unassigned
• Reporter: shuai.xu
• Created: 12/Feb/20 03:00
• Updated: 17/Jun/22 01:14
• Resolved: 17/Jun/22 01:14

Description

Now, Pattern.begin("a").notFollowedBy("b") is not allowed in CEP. But this a useful in many applications. Such as operators may want to find the users who created an order but didn't pay in 10 minutes.

So I propose to support that notFollowedBy() with a interval can be the last part of a Pattern. 

For example,  Pattern.begin("a").notFollowedBy("b").within(Time.minutes(10)) will be valid in the future.

Discuss in dev mail list is https://lists.apache.org/thread.html/rc505728048663d672ad379578ac67d3219f6076986c80a2362802ebb%40%3Cdev.flink.apache.org%3E 

Issue Links

• duplicates: FLINK-26941 Support Pattern end with notFollowedBy with window