Hi,
I ran into an issue after I updated a bundle. After some digging I found that a
static variable didn't have the expected value after the update. I have a feel
for what is going on, but I can't quite connect all the dots.
So here is what's happening:
I have an Activator with a static self.
public Activator(...){
private static Activator self;
...
public void start(...){
self = this;
...
}
public void stop(...){
self = null;
...}
public static Activator getInstance(){
return self;
}
When the framework starts up, everything works as expected. When the bundle
that contains this activator is updated though, the returned value for self =
null. When I remove the null assignment in the stop() method, the getInstance()
method returns the self reference from before the bundle update. So somehow,
the framework holds on to the initial Activator class, and keeps using this
'old' reference, even when the getInstance() call is made from within the
bundle itself.
When I inspect the classloader inside the getInstance() method it shows the
same reference before and after the update, which is suspicious, and probably
the cause of the problem.
I am not necessarily looking for a solution because there is a better way to
solve this problem, but I would like to understand exactly what is going here.
I don't quite get it yet.
Any insight is highly appreciated.
Kind Regards,
Erwin
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