java.lang.ClassCastException when starting jboss with a seam gen app

[dacloutier]

Hi, I ran into a weird error when starting a seam application created by seam-gen within JBOSS.

OS: windows xp
App server: JBoss App Server 4.2
DB: Oracle 9i

If anyone can help me out I'd be very happy.

java.lang.ClassCastException: org.hibernate.type.DateType cannot be cast to org.hibernate.type.VersionType

Here's the complete message:

--- MBeans waiting for other MBeans ---
ObjectName: persistence.units:ear=catalogAdmin.ear,unitName=catalogAdmin
  State: FAILED
  Reason: java.lang.ClassCastException: org.hibernate.type.DateType cannot be cast to org.hibernate.type.VersionType
  I Depend On:
    jboss.jca:service=DataSourceBinding,name=catalogAdminDatasource

--- MBEANS THAT ARE THE ROOT CAUSE OF THE PROBLEM ---
ObjectName: persistence.units:ear=catalogAdmin.ear,unitName=catalogAdmin
  State: FAILED
  Reason: java.lang.ClassCastException: org.hibernate.type.DateType cannot be cast to org.hibernate.type.VersionType
  I Depend On:
   jboss.jca:service=DataSourceBinding,name=catalogAdminDatasource

[danielc.roth]

I've had a couple of similar exceptions where the source of the problem was having jar files in my ear/war that conflicted with the ones in jboss as. I'd start to look there...

[dacloutier]

I found the problem. For some reason, hibernate reverse engeneer puts the @Version annotation to fields called timestamp as it expects it to be of type java.sql.Timestamp.

Unfortunatly, my property was of type java.util.Date which is incomaptible with the @Version annotation.

This is what I had

    

     @Version

     @Temporal(TemporalType.DATE)

     @Column(name = "TIMESTAMP", length = 7)

     public Date getTimestamp() {

          return this.timestamp;

     }

I removed the @Version and it worked

     @Temporal(TemporalType.DATE)

     @Column(name = "TIMESTAMP", length = 7)

     public Date getTimestamp() {

          return this.timestamp;

     }

[dacloutier]

By the way, I found the Hibernate JIRA for this issue, they are working on a fix.

[jusyes]

Ran into the same issue with seam 2.2 that comes with
Hibernate EntityManager 3.2.1.GA
Hibernate Annotations 3.2.1.GA
Hibernate 3.2.4.sp1

Manual fix worked..

[jusyes]

sorry seam version is 2.0.2 GA