[Simple-support] Add support for unmodifiable collections

[Lumsdon, H. <Hug...@bl...>]

Hi,

I think this has been mentioned, but please can consider adding a really basic framework feature to support un-modifiable collection wrappers using a annotations.

For example:

@ElementList(unmodifiable = true)
private List<xxx> yyyy = new LinkedList<xxx>;


Pretty obvious, but this would make the collection itself immutable (through a Collections.unmodifiableXXX wrapper) once deserialization has completed.   We want this feature as we cache and share de-serialized objects and want to restrict developers from doing something stupid i.e. modifying the cached object.

Of course we could wrap the collections manually in a @Commit block (more code to write per object and we have dozens) - or in the getter (wasteful as the wrapper won't get cached) - but it would be much nicer to see this as a framework enhancement.

Thanks,
Hugo.







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