[hibernate-dev] Fwd: [infinispan-dev] Bye bye wrappers, ComparingConcurrentHashMapv8 is here (ISPN-2281)

[Steve Ebersole]

ORM called it "concurrent" but its really not.  Its just "mutation 
safe".  Talking about its usage of IdentityMap.

And we do actually have a few uses of IdentityMap still left.  The 
problem with IdentityMap was always its use to store entities because we 
could not rely on their equals/hashcode, so we ended up having to wrap 
them.  Thats what the bytecode stuff gets around; in fact with that 
stuff we don't even use a collection of any kind anymore, just a 
hand-maintained linked graph.

On 03/18/2013 09:30 AM, Sanne Grinovero wrote:
> I don't know about Validator, but in the ORM case at least we didn't
> need all the overhead of a concurrent / threadsafe implementation.
>
> On 18 March 2013 14:21, Emmanuel Bernard <emmanuel at hibernate.org> wrote:
>> Galder's work could very well be an interesting solution where we use
>> IdentityMap.
>>
>> I know ORM has be using it less with the bytecode rework but I think we
>> still use it in particular in Hibernate Validator.
>>
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