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From "Carlin Rogers (JIRA)" <...@beehive.apache.org>
Subject [jira] Created: (BEEHIVE-1060) Control not being initialized when Inheriting from a parent page flow with a package protected control
Date Wed, 08 Feb 2006 19:10:57 GMT
Control not being initialized when Inheriting from a parent page flow with a package protected
control
------------------------------------------------------------------------------------------------------

         Key: BEEHIVE-1060
         URL: http://issues.apache.org/jira/browse/BEEHIVE-1060
     Project: Beehive
        Type: Bug
  Components: NetUI  
    Versions: 1.0.1    
    Reporter: Carlin Rogers
     Fix For: v.next


When a page flow in another package inherits from a parent page flow that contains a package
protected @Control member variable, the control is not initialized correctly. When the page
flow call a method inherited from the parent and the method uses the package protected control,
an NPE will be thrown as the control will not be initialized.

The work around is to make the control field protected rather than package protected.

To reproduce create a page flow with a package protected control. Include a method in the
parent page flow that uses the control. Then, create a second page flow controller class in
another package that extends the parent and calls the inherited method that hits the control.
I will attach a zip file that will contain page flows to repro this issue. It can also be
used to test the fix.

The problem seems to occur when JavaControlUtils.initJavaControls() is called and checks for
the set of annotated control fields for the inherited page flow controller class. The routine,
JavaControlUtils.getAccessibleControlFieldAnnotations() checks the fields of the page flow
controller and its ancestors to see if they match any of the fields found in our generated
annotation XML file. However, there will not be an <annotated-element> in the processed
annotations file of the derived page flow for the package protected control in the parent
page flow.

I'm not sure yet whether the NetUI annotation processor should generate this <annotated-element>
or if the getAccessibleControlFieldAnnotations() method should be looking at the annotated
fields of parent classes. We can look at this for v.next.

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