[jboss-jira] [JBoss JIRA] (DROOLS-5217) Executable model compilation fails when binding a list from double square bracket

[Mario Fusco (Jira)]

     [ https://issues.redhat.com/browse/DROOLS-5217?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Mario Fusco resolved DROOLS-5217.
---------------------------------
    Resolution: Done


Fixed by https://github.com/kiegroup/drools/commit/a433c628b9a0c4853d9ea0b7e69fa9e51666017f

> Executable model compilation fails when binding a list from double square bracket
> ---------------------------------------------------------------------------------
>
>                 Key: DROOLS-5217
>                 URL: https://issues.redhat.com/browse/DROOLS-5217
>             Project: Drools
>          Issue Type: Bug
>          Components: core engine
>    Affects Versions: 7.35.0.Final
>            Reporter: Matteo Casalino
>            Assignee: Mario Fusco
>            Priority: Major
>         Attachments: binding-list-from-double-square-bracket.zip
>
>
> Executable model rule compilation fails when trying to bind a _List_ from a double square bracket
> Example of DRL that fails to compile:
> {noformat}
>     rule "binding field indexed with square brackets"
>     when $boundList: java.util.List() from [[1,2,3]]
>          Pojo($boundList.containsAll(integerList))
>     then
>     end
> {noformat}
> Error:
> {noformat}
>     com.github.javaparser.ParseProblemException: Encountered unexpected token: "[" "["
>         at line 1, column 1.
>     
>     Was expecting one of:
>     
>         "!"
>         "("
>         "+"
>         "++"
>      ...
> {noformat}
> The example works fine when compiling without executable model.
> We acknowledge that there are better and more efficient ways to achieve the same result as the above example, but there are perhaps other use-cases for the double square bracket mvel expression. As it is supported in DRL, should it be supported with executable model too?



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