On Mar 21, 2009, at 3:00 PM, howard goldberg wrote:
I started testing my ejb services with a multi-threaded client, and
noted
that my singleton ejb was being instantiated multiple times.
When I annotated the singleton with @startup, the singleton was
appropriately only instantiated once. I subsequently increased the
interval
between client thread instantiations, (after removing @startup) and
the
number of singleton instantiations diminished. When using lazy
instantiation, the singleton appears vulnerable to multiple
instantiations
if called concurrently.
Howard, thank you very much for reporting this.
I've been hacking on this and should hopefully have something for you
tomorrow or the next day. Taking the opportunity to also add
transactional PostConstruct methods, @AccessTimeout support and a
couple other Singleton items that were added to the EJB 3.1 spec
recently.
-David
