"alesj" wrote : Hmmm ... actually I'm not really sure what JBossXB will do | if some wildcard deployment's element maps to MD which doesn't implement BMDF. | I would expect it to throw a useful exception. :-) I did a quick check, this is the result: | java.lang.ClassCastException: org.jboss.deployers.vfs.plugins.xb.SchemaResolverDeployerMetaData | at org.jboss.kernel.plugins.deployment.AbstractKernelDeployment.getBeans(AbstractKernelDeployment.java:224) | at org.jboss.kernel.plugins.deployment.AbstractKernelDeployer.deployBeans(AbstractKernelDeployer.java:304) | at org.jboss.kernel.plugins.deployment.AbstractKernelDeployer.deploy(AbstractKernelDeployer.java:130) | at org.jboss.kernel.plugins.deployment.BasicKernelDeployer.deploy(BasicKernelDeployer.java:76) | at org.jboss.kernel.plugins.deployment.xml.BasicXMLDeployer.deploy(BasicXMLDeployer.java:88) | at org.jboss.kernel.plugins.deployment.xml.BasicXMLDeployer.deploy(BasicXMLDeployer.java:158) | at org.jboss.test.kernel.junit.MicrocontainerTestDelegate.deploy(MicrocontainerTestDelegate.java:294) | at org.jboss.test.kernel.junit.MicrocontainerTestDelegate.deploy(MicrocontainerTestDelegate.java:438) | at org.jboss.test.deployers.vfs.xb.XBDeployersTestDelegate.deploy(XBDeployersTestDelegate.java:46) | at org.jboss.test.kernel.junit.MicrocontainerTestDelegate.setUp(MicrocontainerTestDelegate.java:83) It actually only fails later on when in tries to cast it to BMDF. JBossXB doesn't consider generics info --> see JBossXB's CollectionPropertyHandler View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4191432#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...