Seam Injection on EJB fails IllegalArgumentException: object is not an instance of declaring class in JBoss EAP
Issue
- Our application is a JEE 5 application using Seam which fails to inject on EJB components. They are found using JNDI without any issues, but injection of entitymanagers or other components fails. The error below is in the log:
...
Caused by: java.lang.IllegalArgumentException: Could not invoke method by reflection: PrintJobDaoImpl.setEntityManager(javax.persistence.EntityManager) with parameters: (org.jboss.seam.persistence.EntityManagerProxy) on: com.jboss.examples.jpa.ExampleDaoImpl
at org.jboss.seam.util.Reflections.invoke(Reflections.java:32)
at org.jboss.seam.Component.setPropertyValue(Component.java:1914)
... 158 more
Caused by: java.lang.IllegalArgumentException: object is not an instance of declaring class
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.jboss.seam.util.Reflections.invoke(Reflections.java:22)
... 159 more
Environment
- JBoss Enterprise Application Platform
- 5.x
Subscriber exclusive content
A Red Hat subscription provides unlimited access to our knowledgebase of over 48,000 articles and solutions.
Welcome! Check out the Getting Started with Red Hat page for quick tours and guides for common tasks.
