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https://issues.apache.org/jira/browse/METRON-658?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15851649#comment-15851649
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ASF GitHub Bot commented on METRON-658:
---------------------------------------
Github user asfgit closed the pull request at:
https://github.com/apache/incubator-metron/pull/430
> Invalid Stellar Predicate Statement
> -----------------------------------
>
> Key: METRON-658
> URL: https://issues.apache.org/jira/browse/METRON-658
> Project: Metron
> Issue Type: Bug
> Reporter: Josh Meyer
> Labels: grammar, stellar
>
> Currently there seems to be an issue in the way Stellar defines predicate
> statements in its grammar. This may not necessarily be limited to predicate
> statements, but currently this is where the issue is showing itself. For
> example, the following expressions should be valid, but each of them fails
> during parsing.
> {code}
> ('grok' not in 'foobar') == true
> 'grok' not in ('foobar' == true)
> 'grok' not in 'foobar' == true
> {code}
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