[jboss-jira] [JBoss JIRA] Updated: (JBRULES-739) Exception reading PackageBuilder errors

[Dirk Bergstrom (JIRA)]

     [ http://jira.jboss.com/jira/browse/JBRULES-739?page=all ]

Dirk Bergstrom updated JBRULES-739:
-----------------------------------

    Attachment: Bug.java

Example code to trigger bug two ways.

> Exception reading PackageBuilder errors
> ---------------------------------------
>
>                 Key: JBRULES-739
>                 URL: http://jira.jboss.com/jira/browse/JBRULES-739
>             Project: JBoss Rules
>          Issue Type: Bug
>      Security Level: Public(Everyone can see) 
>          Components: Drl Parser/Builder
>    Affects Versions: 3.1-m2
>            Reporter: Dirk Bergstrom
>         Assigned To: Mark Proctor
>         Attachments: Bug.java
>
>
> Using trunk (revision 10170), I get an exception when trying to read errors after calling PackageBuilder.addPackageFromDrl(String, Reader) with any  DSL file.  The getErrors() method spits out this exception:
> java.lang.ArrayStoreException
> 	at java.lang.System.arraycopy(Native Method)
> 	at java.util.ArrayList.toArray(ArrayList.java:304)
> 	at org.drools.compiler.PackageBuilder.getErrors(PackageBuilder.java:380)
> (The docs for toArray say that exception is thrown if one of the members of the
> List is the wrong class for the supplied array.)
> If I instead call printErrors, I get something more useful:
> java.lang.ClassCastException: org.drools.lang.ExpanderException
> 	at org.drools.compiler.PackageBuilder.printErrors(PackageBuilder.java:390)
> If I call PackageBuilder.addPackageFromDrl(String), I get no errors.  So there are two issues:
> *) The DSL parser is busted
> *) PackageBuilder is putting incompatible Exceptions in the errors Collection.

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