• Post Reply Bookmark Topic Watch Topic
  • New Topic
programming forums Java Mobile Certification Databases Caching Books Engineering Micro Controllers OS Languages Paradigms IDEs Build Tools Frameworks Application Servers Open Source This Site Careers Other Pie Elite all forums
this forum made possible by our volunteer staff, including ...
Marshals:
  • Campbell Ritchie
  • Jeanne Boyarsky
  • Ron McLeod
  • Paul Clapham
  • Liutauras Vilda
Sheriffs:
  • paul wheaton
  • Rob Spoor
  • Devaka Cooray
Saloon Keepers:
  • Stephan van Hulst
  • Tim Holloway
  • Carey Brown
  • Frits Walraven
  • Tim Moores
Bartenders:
  • Mikalai Zaikin

MDB serialized

 
Ranch Hand
Posts: 54
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
spec. say "All calls to a message-driven bean must be serialized".
With my knowledge I can not understand this. Can someone explain this?
[ March 06, 2004: Message edited by: si yi ]
 
Ranch Hand
Posts: 775
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
It means that the container will only use the MDB to process one message at a time. Only one thread will be using onMessage(), so the MDB doesn't have to worry about implementing thread-safety protections.
 
Yi Si
Ranch Hand
Posts: 54
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
got it. thanks
 
Ranch Hand
Posts: 173
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
sorry, I haven't got it. The spec 15.4.5 "Serializing MDB methods" says that the container serializes calls to the MDB instances. I don't understand the concept that a method call can be serialized. You can serialise objects and you can call methods, but what does it mean to serialize a method? Or a method call?


Simon
 
Ranch Hand
Posts: 1683
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
serialize = one after the other (not concurrently)
 
Ranch Hand
Posts: 18944
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
The same word Serializatio n is used to refer to not object serialization but to serial processing rather than parallel processing.
 
it's a teeny, tiny, wafer thin ad:
a bit of art, as a gift, that will fit in a stocking
https://gardener-gift.com
reply
    Bookmark Topic Watch Topic
  • New Topic