Hi,
As you might don't know, as I didn't, constructors of CDI managed beans are
not guaranteed to be invoked just once per instance. In fact, with our
current Weld implementation, at least for @ApplicationScoped ones,
constructors are invoked once per injection point. The specs guarantee,
though, that if there is a method with @PostConstruct annotation, it will
be invoked just once per instance.
OK, so...?
In practice, this means you should use a @PostConstruct method to do
initialization in your beans, specially if they assume a single instance or
are expensive (well, even better if you don't do expensive initializations).
http://docs.oracle.com/javaee/6/tutorial/doc/gmgkd.html
http://stackoverflow.com/questions/18378608/why-is-constructor-of-applicationscoped-class-called-more-than-once
http://stackoverflow.com/questions/3406555/why-use-postconstruct
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