[jboss-jira] [JBoss JIRA] (DROOLS-5102) DMN npe when xml defines empty default expression for DT

[Matteo Mortari (Jira)]

     [ https://issues.redhat.com/browse/DROOLS-5102?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Matteo Mortari updated DROOLS-5102:
-----------------------------------
    Tester: Daniel Rosa


> DMN npe when xml defines empty default expression for DT
> --------------------------------------------------------
>
>                 Key: DROOLS-5102
>                 URL: https://issues.redhat.com/browse/DROOLS-5102
>             Project: Drools
>          Issue Type: Bug
>          Components: dmn engine
>    Affects Versions: 7.33.0.Final
>            Reporter: Eugenio Romano
>            Assignee: Matteo Mortari
>            Priority: Critical
>         Attachments: different-all.dmn
>
>
> If you execute the DMN table in attach in the last version you will have a NullPointerException in case your input value is not matching any output.
> We are moving from version 23 to 33 and one of our tests are catching this issue
> The ProcessedExpression Class seems can be responsible of causing this NullPointerException.
> {code:java}
> this.ast = (BaseNode)tree.accept(new ASTBuilderVisitor(ctx.getInputVariableTypes(), ctx.getFEELFeelTypeRegistry()))
> {code}
> If you try with 
> "inputString", "hi"
> "inputInteger", 12
> "inputBoolean", false
> "inputDate", "2019-09-26T00:00:00.000+0000"
> you can replicate the error
> I guess the expected behavior should be a null output as before



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