[jboss-dev-forums] [EJB Development] - Re: Entity bean deadlock

[le_garcon_enerve]

Maybe you could use 

A: getTitle() {
        return name + getSync().getName(getB());
}

B: getTitle() {
        return name + getSync().getName(getA());
}

Where Sync is a Singleton with

Sync: 
syncronised getName(Bean b){
   return b.getName();
}
This way the threads run without interference until on of them calls the getName() of Sync. At this point, one of them is prone to win the race, and the syncronisation within Sync avoids the deadlock. 

The penalty for the indirect call to Sync should not be too bad if the three beans are in the same VM.

Didn't try it, though ;-)

Cheers ,
Georg


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