Hi,

I'm trying to use an abstract class for some stateful beans that use a lot of similair functionality.
But I'm having a lot of trouble using in-/outjections in combination with reflection.

My abstract class:

package common.selectableMap;

//imports....

@Scope(ScopeType.CONVERSATION)
public abstract class AbstractMap
{

 @Logger protected Log log;
 @In FacesMessages facesMessages;
 @In(create=true) protected Map<String, String> messages;
 @PersistenceContext (type=PersistenceContextType.EXTENDED)
 private EntityManager em;

 protected EntityQuery resultList;
 protected Map<Serializable, Boolean> checkedEntities;

 @Destroy @Remove
 public abstract void destroy();

 @Begin(join=true)
 public void begin()
 {
 log.info("abstractMap begin: " + getClass().getName());
 if (checkedEntities == null)
 {
 checkedEntities = new HashMap<Serializable, Boolean>();
 }
 }
}

The 'resultList' and 'checkedEntities' attributes are reflected by the subclass and will be in-/outjected by the subclass.

My subclass:

package common.selectableMap;

// imports....

@Stateful
@Name("userMap")
public class UserMap extends AbstractMap implements MapManager
{

 @Override
 @Destroy @Remove
 public void destroy() {
 }

 @Out (scope=ScopeType.CONVERSATION, value="checkUsers")
 public Map<Serializable, Boolean> getCheckedEntities() {
 return checkedEntities;
 }

 public void setCheckedEntities(Map<Serializable, Boolean> checkedEntities) {
 this.checkedEntities = checkedEntities;
 }

 @In (required=false, value="resultList", scope=ScopeType.CONVERSATION)
 public EntityQuery getResultList() {
 return resultList;
 }

 public void setResultList(Object resultList) {
 }
}

This however causes an exception when using them:

Caused by: java.lang.IllegalArgumentException: Could not invoke method by reflection: UserMap.getResultList() with parameters: (null) on: nl.wkm.orionglobe.web.entity.common.selectableMap.UserMap
 at org.jboss.seam.util.Reflections.invoke(Reflections.java:31)
 at org.jboss.seam.Component.setPropertyValue(Component.java:1765)
 ... 119 more
Caused by: java.lang.IllegalArgumentException: wrong number of arguments
 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:585)
 at org.jboss.seam.util.Reflections.invoke(Reflections.java:21)
 ... 120 more

Why does the UserMap.getResultList() get called with a 'null' parameter?
(It realy is, as I've checked while debugging)

It should not use a parameter at all!