[infinispan-dev] Redesigning CacheStore and CacheLoader SPIs

[Mircea Markus]

On 2 Apr 2012, at 15:06, Manik Surtani wrote:

> 
> On 2 Apr 2012, at 14:57, Mircea Markus wrote:
> 
>> 
>> On 2 Apr 2012, at 14:45, Sanne Grinovero wrote:
>> 
>>> On 2 April 2012 14:31, Tristan Tarrant <ttarrant at redhat.com> wrote:
>>>> On 04/02/2012 03:17 PM, Mircea Markus wrote:
>>>>> On 2 Apr 2012, at 14:02, Tristan Tarrant wrote:
>>>>> 
>>>>>> I dislike the current way of configuring stores via<property>. As part of my work for ISPN-1821 I will also introduce the ability for stores to provide their own configuration parsers so that we can have more readable schemas.
>>>>> That would be quite nice, as the property-based approach is very error prone. Curious how you're going to support 'dynamic' xml snippets,through some xml name spaces perhaps?
>>>> Yes, just like the Spring configuration or even the AS7 configuration
>>>> itself. In XSD speak they would be complex-types extending a generic
>>>> "store" type.
>>> 
>>> +1, same for the Query options: <properties /> is limiting.
>>> 
>>>>>> Participating in JTA is obviously high on the desired list, and I'd also expose some form of batching so that intelligent cache-store can colaesce operations together for better performance.
>>>>> that's a big one indeed. JTA support won't be available for all stores, e.g. cloud cache store.
>>>> I think very few stores would have the ability to participate in JTA,
>>>> but if a cache store can, we should definitely support it.
>>> 
>>> Why "definitely" ? It's of course nice to have, but I'm not sure of
>>> the actual value.
>> the cache store is an extension of ISPN's internal storage, so if it isn't JTA compliant then ISPN configured with a cache store, as a whole, is not JTA compliant. 
> 
> Not true.  If Infinispan acts as a JTA proxy (which is what it currently does), then it still is JTA compliant.
Not sure what you mean by JTA proxy? ISPN is a fully flagged XAResource, but when you use a non-JTA cache store inconsistencies can occur ( not aCid transactions).