[jboss-jira] [JBoss JIRA] (JBRULES-3621) Declared types : Constructor with more than 255 parameters

[RH Bugzilla Integration (JIRA)]

    [ https://issues.jboss.org/browse/JBRULES-3621?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12794337#comment-12794337 ] 

RH Bugzilla Integration commented on JBRULES-3621:
--------------------------------------------------

Amana <ajuricic at redhat.com> made a comment on [bug 990701|https://bugzilla.redhat.com/show_bug.cgi?id=990701]

Description of problem:

When creating fact types declaratively in BRMS (5.2 and 5.3.0) no more than 255 fields can be added. We need to create fact types with more than 255 fields.

In the GUI, when clicking "Validate" after adding enough fields to a declared fact type to exceed a total of about 255, we get a popup saying:

"400 Sorry, a technical error occurred. Please contact a system administrator."

In the console stack trace we see "java.lang.ClassFormatError: Too many arguments in method signature"
                
> Declared types : Constructor with more than 255 parameters
> ----------------------------------------------------------
>
>                 Key: JBRULES-3621
>                 URL: https://issues.jboss.org/browse/JBRULES-3621
>             Project: JBRULES
>          Issue Type: Bug
>      Security Level: Public(Everyone can see) 
>          Components: drools-core  (expert)
>    Affects Versions: 5.4.0.Final
>            Reporter: JP Chemali
>            Assignee: Mario Fusco
>             Fix For: 5.5.0.Beta1
>
>
> When declaring a class type in a drools file
> {code:Java}
> declare MyType
>  i1:int
>  i2:int
>  ...
>  i256:int
> end
> {code} 
> The generated *MyType* bean contains a constructor with ALL fields parameters, which when they exceed 255, cause an unrecoverable ClassFormatError
> Possible solutions:
> - Check this limit to skip the constructor generation in org.drools.factmodel.DefaultBeanClassBuilder.generateConstructors()
> - Maybe an explicit annotation to disable the behavior for those who don't need it?

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