In the practice the problem is that jsf core (myfaces and ri) uses
reflection to set the attributes and the following case fail:
Fail with the following exception
java.lang.IllegalAccessException: Class javax.faces.component._Util can not
access a member of class org.apache.myfaces.test.AbstractComponent with
modifiers "public"
at sun.reflect.Reflection.ensureMemberAccess(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at javax.faces.component._Util.getValue(_Util.java:54)
at javax.faces.component.BaseComponent.getValueReflection(
BaseComponent.java:32)
at javax.faces.other.ComponentTest.main(ComponentTest.java:14)
This behavior is a JDK bug:
http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=4071957
http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=4533479
One possible workaround is put the following line before invoke:
readMethod.setAccessible(true);
Or make AbstractComponent public.
The conclusion is that the abstract base class should be public if and only
if it has in his body a attribute definition available on the tld. If the
abstract base class has some different code it can be package scope. This
behavior discard this approach for myfaces core api!
I'm not sure this behaviour is a bug, or that it is fatal for the purposes
of generating base classes for myfaces-api.
When a Method object refers to a public method in a package-scoped class,
then Method.invoke fails with the above exception *when executed by some
class outside that package*. However it succeeds fine when invoked by code
within that package (eg its concrete subclass) or by the class itself. I
have tested this behaviour and it is the same on both java1.6 and java1.3.
It also seems quite reasonable behaviour.
So one solution is for the generated base class to override getAttributes()
to return a custom map where that class itself implements the fetching of
the attributes it implements, and delegates to the map created by
UIComponentBase.getAttributes() for anything else. This seems quite
feasable.
Regards,
Simon
--
View this message in context:
http://www.nabble.com/Re%3A--Myfaces-Wiki--Update-of-%22Code-Generation%22-by-SimonKitching-tp15216313p15353739.html
Sent from the My Faces - Dev mailing list archive at Nabble.com.
