[overlord-issues] [JBoss JIRA] (RTGOV-579) Support esper as CEP event language in Event Processing

[Jorge Morales (JIRA)]

    [ https://issues.jboss.org/browse/RTGOV-579?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13006405#comment-13006405 ] 

Jorge Morales commented on RTGOV-579:
-------------------------------------

The language that Esper uses is very much like SQL so more user friendly, so that has helped Esper being adopted. Some examples:

"select avg(price) from org.myapp.event.OrderEvent.win:time(30 sec)"

"on PlayerAnswer pa merge PlayerAnswerWindow paw
where pa.playerId = paw.playerId and pa.questionId = paw.questionId
when not matched then insert select questionId, (select questionTime from QuestionWindow where questionId = pa.questionId) as questionTime, playerId, answer, clientAnswerTime, false as hasReceivedFA
when matched and paw.answer is null then update set paw.answer = pa.answer, paw.clientAnswerTime = pa.clientAnswerTime"

See: http://esper.codehaus.org/tutorials/tutorial/examples.html

> Support esper as CEP event language in Event Processing
> -------------------------------------------------------
>
>                 Key: RTGOV-579
>                 URL: https://issues.jboss.org/browse/RTGOV-579
>             Project: RTGov (Run Time Governance)
>          Issue Type: Feature Request
>            Reporter: Jorge Morales
>            Assignee: Gary Brown
>             Fix For: 2.1.0.Final
>
>
> Esper (http://esper.codehaus.org/) is a very powerful and very easy to use CEP event processing engine. It would be good to provide support for it as an event processor for CEP types of processing.



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