[jbossseam-issues] [JBoss JIRA] Created: (JBSEAM-2111) coerceToType / javaassist error when converting types for multi selection

[Damian Harvey (JIRA)]

coerceToType / javaassist error when converting types for multi selection
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                 Key: JBSEAM-2111
                 URL: http://jira.jboss.com/jira/browse/JBSEAM-2111
             Project: JBoss Seam
          Issue Type: Bug
    Affects Versions: 2.0.0.CR2
         Environment: Mac OSX. Jboss 4.2.1, Java 1.5
            Reporter: Damian Harvey


When trying to display values in an h:selectManyCheckbox I get an error:
java.lang.IllegalArgumentException: Cannot convert com.locuslive.odyssey.entity.Groups at 3960f3 of typ
e class com.locuslive.odyssey.entity.Groups to class com.locuslive.odyssey.entity.Groups_$$_javassis
t_219

I have created a very basic project with PERSON, GROUP and PERSONGROUP entities. I've attached it after emptying the lib directory.

Essentially on the PersonEdit page I want to be able to select which Groups the Person may belong to. This is done with the selectManyCheckbox. The checkbox is populated with a list of GROUPs from a GroupList. It is bound to a variable in the PersonHome called 'groups'. This is a list of Groups that is extracted from the PersonGroup table for that user. 

The stacktrace is in the forum post. I have also generated the attached project under Seam 1.2.1.GA and the problem is not there.





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