I want to use the WOLongResponsePage and have successfully worked through
the examples from apple. Now I thought that I could do something slight
different
from the examples, but there appear problems.
My minimum example contains the classes Application, Main, WaitPage and in
one case, Subcomponent.
My first problem occurs, when I try to use the class Subcomponent as WOLong-
ResponsePage but return a different WOComponent as waiting page to display
during the long calculations:
class Subcomponent extends WOLongResponsePage
{
...
public WOComponent refreshPageForStatus(Object o)
{
return pageWithName(WaitPage.class.getName());
}
...
}
The problem is that the refresh of the WOLongResponsePage seems to be
interrupted:
refreshPageForStatus(..) gets only called once and pageForResult(..) is never
called.
So question No1:
How is it possible to use another waiting page as the WOLongResponsePage-class?
Another problem occured when I tried to realize the WOLongResponsePage (LRP) as
a local, inner class. Something like that:
public class Main()
{
public WOComponent startLongQuery()
{
WOLongResponsePage query = new WOLongResponsePage(this.context())
{
public Object performAction()
{
try
{
System.out.println("pausing ..");
Thread.sleep(5000);
}
catch(InterruptedException e)
{
e.printStackTrace();
}
return new Integer(5);
}
public WOComponent refreshPageForStatus( Object status
)
{
System.out.println("activating WaitPage
"+status);
return pageWithName(WaitPage.class.getName());
}
public WOComponent pageForResult(Object v)
{
System.out.println("activating result page "+v);
return pageWithName(NextPage.class.getName());
}
};
query.setRefreshInterval(1);
return query;
}
}
There I get the error, that the backtrack-cache exceeded, no matter how big its
size was chosen. I know that every refresh fills the cache with a whole site
(plus
every internal frame) but in my example this would be only one cache slot per
refresh.
The only thing I could image to cause problems is that the inner class is not a
full component because it lacks a html and wod-file. My thought is that the
displayed
pages are WaitPage or as result NextPage.
I'm looking forward for some explanations!
Thx in advance
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