Hi,
I'm trying to implement Session Bean Inheritance, so common business methods
(like defaults for search and save) are encapsulated on a superclass, and
subclasses overrides just the methods they have a particular behavor.
Superclasses can have properties that holds bean state. Multiple interface
inheritance is desirable too. Ex:
| interface BusinessService {
| save();
| search();
| ...
| Object getMyProperty(); // holds some state
| }
|
| class BusinessManager implements BusinessService {
| save() { ... };
| search() { ... };
| ...
|
| Object myProperty;
|
| public getMyProperty() {
| // defaults to subclasses
| return myProperty;
| }
| }
|
| interface UserService {
| login();
| }
|
| @Stateful
| class UserManager extends BusinessManager implements UserService {
| login() { ... };
|
| // overrides default BusinessManager behavior
| @Override
| save() {
| if (checkIfLoginIsUnique())
| super.save();
| }
| }
|
When I write Session Beans with no inheritance, everything works fine, but with
inheritance, I can't get page rendering work, because JSF can't find superclass
properties that holds bean states, and even superclass methods.
| com.sun.facelets.tag.TagAttributeException: index.xhtml @14,44
| test="#{empty myBean.myProperty}": Bean: myBean$$EnhancerByCGLIB$$e16dcde2,
property: myProperty
|
| java.lang.IllegalArgumentException: method not found: myMethod for
component: myBean (check that it is declared on the session bean business
interface)
| ...
| java.lang.NoSuchMethodException:
MyService$$EnhancerByCGLIB$$e16dcde2.myMethod()
|
Any Help?
Thanx,
Fábio.
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