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From "Justin Leet (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (METRON-1877) Nested IF ELSE statements can cause parse errors in Stellar
Date Tue, 11 Dec 2018 16:00:00 GMT

     [ https://issues.apache.org/jira/browse/METRON-1877?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Justin Leet updated METRON-1877:
--------------------------------
    Fix Version/s: 0.7.0

> Nested IF ELSE statements can cause parse errors in Stellar
> -----------------------------------------------------------
>
>                 Key: METRON-1877
>                 URL: https://issues.apache.org/jira/browse/METRON-1877
>             Project: Metron
>          Issue Type: Improvement
>            Reporter: Justin Leet
>            Assignee: Justin Leet
>            Priority: Major
>             Fix For: 0.7.0
>
>
> IF ELSE statements nested inside IF ELSEstatements can cause problems with short-circuiting.
See the following example.
> {code:java}
> Stellar>>> IF true THEN IF false THEN true ELSE false ELSE is_alert
> false
> Stellar>>> IF true THEN IF true THEN true ELSE false ELSE is_alert
> ! Invalid parse, found null
> org.apache.metron.stellar.dsl.ParseException: Invalid parse, found null
> at org.apache.metron.stellar.common.StellarCompiler$Expression.apply(StellarCompiler.java:211)
> at org.apache.metron.stellar.common.BaseStellarProcessor.parse(BaseStellarProcessor.java:145)
> at org.apache.metron.stellar.common.shell.DefaultStellarShellExecutor.executeStellar(DefaultStellarShellExecutor.java:401)
> at org.apache.metron.stellar.common.shell.DefaultStellarShellExecutor.execute(DefaultStellarShellExecutor.java:257)
> at org.apache.metron.stellar.common.shell.cli.StellarShell.execute(StellarShell.java:357)
> at org.jboss.aesh.console.AeshProcess.run(AeshProcess.java:53)
> at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
> at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
> at java.lang.Thread.run(Thread.java:748){code}



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