[jboss-dev-forums] [Design the new POJO MicroContainer] - Re: Anonymous beans

alesj do-not-reply at jboss.com
Mon Apr 7 11:35:37 EDT 2008


"adrian at jboss.org" wrote : 
  | Why are you "cloning" fields that are direct referenes? What does it achieve?
  | 
You mean immutables?
Does Object::clone do that already for me?

"adrian at jboss.org" wrote : 
  | This looks overally complicated and an obvious misuse of generics again.
  | Why have generics then do all the casting and suppress warnings?
  | 
  | The way to clone collections is something like:
  | 
  | 
  |   | Set<String> aliases = this.getAliases();
  |   | if (aliases != null)
  |   |    clone.setAliases(new HashSet<String>(aliases));
  |   | 
All would be fine if Object::getClass returned the right Class generic. :-)

I don't wanna do that extra 2 lines (null check and the new collection instantiation) for every cloning of the collection.
And I guess I would also have to iterate over all the collection items that are not immutable and clone them before adding them to new collection instance. 
Another code that I don't want to duplicate.

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