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I am looking for an EPL statement which fires an event each time the Id of the current message of my stream has raised more than one. Like (a+1 != b).

Something like this but I do not know the right syntax:

select * from pattern[a=test.SensorEvent(ids) -> b=test.SensorEvent(ids)(a+1!=b)];
Obsidian
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UserStefan
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1 Answers1

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I recommend looking into match-recognize if you have frequent matches. Patterns are for less-frequent matches as they work off indexes on search criteria and maintaining indexes is an expense.

The expression is similar to temperature > a.temperature or temperature > (a.temperature + 1)

user3613754
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