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https://issues.apache.org/jira/browse/FLINK-6197?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15944785#comment-15944785
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ASF GitHub Bot commented on FLINK-6197:
---------------------------------------

Github user kl0u commented on a diff in the pull request:

    https://github.com/apache/flink/pull/3624#discussion_r108365413
  
    --- Diff: 
flink-libraries/flink-cep-scala/src/main/scala/org/apache/flink/cep/scala/pattern/Pattern.scala
 ---
    @@ -138,7 +139,7 @@ class Pattern[T , F <: T](jPattern: JPattern[T, F]) {
         * @param filter Or filter function
         * @return The same pattern operator where the new filter condition is 
set
         */
    -  def or(filter: FilterFunction[F]): Pattern[T, F] = {
    +  def or(filter: IterativeCondition[F]): Pattern[T, F] = {
    --- End diff --
    
    Fixing this


> Add support for iterative conditions.
> -------------------------------------
>
>                 Key: FLINK-6197
>                 URL: https://issues.apache.org/jira/browse/FLINK-6197
>             Project: Flink
>          Issue Type: Bug
>          Components: CEP
>    Affects Versions: 1.3.0
>            Reporter: Kostas Kloudas
>            Assignee: Kostas Kloudas
>             Fix For: 1.3.0
>
>
> So far, the {{where}} clause only supported simple {{FilterFunction}} 
> conditions. 
> With this, we want to add support for conditions where the an event is 
> accepted not only based on its own properties, e.g. name, as it was before, 
> but also based on some statistic computed over previously accepted events in 
> the pattern, e.g. if the price is higher than the average of the prices of 
> the previously accepted events. 
> This in combination with the recently added quantifiers will allow for a lot 
> more expressive patterns.



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