[jboss-dev-forums] [JBoss Microcontainer Development] - Re: Supporting qualifiers in MC

[alesj]

"kabir.khan at jboss.com" wrote : 
  | I forgot to mention that in the case of qualifier metadata existing at a higher level in MDR than instance level, the search takes that into account and merges whatever it can find at all levels. e.g., if ["a", "b"] exists at JVM level and ["c", "d"] at INSTANCE level, when doing the lookup for an instance ["a", "b", "c", "d"] is returned.
  | 
I would hide the search behind some registry / cache / "database'.

By default we would have the same simple algorithm as we have now,
but we could/should turn it into smarter/faster one.
e.g. merge qualifiers only once, match on set intersection not being empty

In this case we would have to check if MDR can be changed in such a way that our data wouldn't be stale / invalid.
e.g. something would pull the X level MDR "rug" under our feet / "database"


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