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

coerceToType / javaassist error when converting types for multi selection ------------------------------------------------------------------------- Key: JBSEAM-2111 URL: http://jira.jboss.com/jira/browse/JBSEAM-2111 Project: JBoss Seam Issue Type: Bug Components: JSF Integration Affects Versions: 2.0.0.CR2 Environment: Mac OSX. Jboss 4.2.1, Java 1.5 Reporter: Damian Harvey Assigned To: Pete Muir Fix For: 2.1.0.GA Attachments: Test.zip, Test2_using_Seam1.2.1.GA.zip, Test3.zip When trying to display values in an h:selectManyCheckbox I get an error: java.lang.IllegalArgumentException: Cannot convert com.locuslive.odyssey.entity.Groups@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.