[infinispan-dev] splitting infinispan-lucene-directory.jar

[Galder Zamarreño]

On Jul 5, 2011, at 11:35 AM, Sanne Grinovero wrote:

> The LuceneKey2StringMapper is not mandatory as it is an optional
> optimization which applies only in case a StringBased/CacheStore is
> enabled.
> I'm confused about what you mean with a lifecycle callback, I'm
> assuming that the cache manager is started with the application
> server, while the application might be deployed later - and so not
> even have the classes available to whatever hack the cachemanager
> might want to attempt?

I'm a bit confused as well but this is my process of thinking right now:

If the user deploys the lucene dir jar in their EAR with the std mapper, does it all work fine?

If so, I'm assuming that the core infinispan jar is able to hook finely with the lucene dir jar in this users EAR.

Assuming that works fine, lucene dir's LifecycleCallbacks implementation could implement:

cacheStarting(ComponentRegistry cr, Configuration configuration, String cacheName)

And within it, check if the cache is configured with a StringBased/CacheStore and the inject the LuceneKey2StringMapper.

Clearly, that's assuming that LifecycleCallbacks in lucene dirs can detect which caches are for the lucene directory and which ones to apply this change in.

That way, the commons lib does not require to have access to the LuceneKey2StringMapper

If this doesn't still make sense, ping me and let's have a chat to clarify.

> 
> 2011/7/5 Galder Zamarreño <galder at redhat.com>:
>> Yeah, something like that but configuring before starting the cache manager.
>> 
>> Bearing in mind my limited knowledge, shouldn't a lucene directory implementation be mandatorily configured with LuceneKey2StringMapper?
>> 
>> IOW, couldn't the lifecycle callback implementation be clever enough to discover whether a JdbcStringBasedCacheStoreConfig is in use and if so, configure this mapper?
>> 
>> If it's not mandatory, why isn't it?
>> 
>> On Jul 4, 2011, at 10:08 AM, Sanne Grinovero wrote:
>> 
>>> Hi Galder,
>>> I'm not sure I understood your suggestion. Are you thinking of having
>>> users explicitly avoid defining it in their configuration file, and
>>> then have the application - when it's eventually started - override
>>> the configuration of an already started cache?
>>> 
>>> 2011/7/4 Galder Zamarreño <galder at redhat.com>:
>>>> Hmmmm, question:
>>>> 
>>>> Did you look into the possibility of using the LifecycleCallbacks to hook the LuceneKey2StringMapper at runtime?
>>>> 
>>>> In theory, that should allow the cache manager to hook the mapper on lucene mapper on startup assuming that the cache manager jar can successfully locate the module properties file belonging to the lucene directory deployed in the EAR.
>>>> 
>>>> On Jul 2, 2011, at 12:35 AM, Sanne Grinovero wrote:
>>>> 
>>>>> Hello all,
>>>>> it seems that people defining an Infinispan configuration in the
>>>>> application server for the Lucene directory, and using the ad-hoc
>>>>> TwoWayKey2StringMapper, need to move the
>>>>> infinispan-lucene-directory.jar in the commons-lib directory of the
>>>>> application server.
>>>>> 
>>>>> Since this module depends on Lucene too, people would need to move the
>>>>> Lucene jar too, and this is not desirable as applications might want
>>>>> to use different applications.
>>>>> 
>>>>> The mapper depends of course to the objects it creates: the only clean
>>>>> option I'm seeing is to split the jar in two jars, making sure that
>>>>> the keyMapper and keys are independent from Lucene, but I'm not a big
>>>>> fan of this split.
>>>>> 
>>>>> Thoughts?
>>>>> 
>>>>> http://community.jboss.org/message/613078#613078
>>>>> 
>>>>> Sanne
>>>>> _______________________________________________
>>>>> infinispan-dev mailing list
>>>>> infinispan-dev at lists.jboss.org
>>>>> https://lists.jboss.org/mailman/listinfo/infinispan-dev
>>>> 
>>>> --
>>>> Galder Zamarreño
>>>> Sr. Software Engineer
>>>> Infinispan, JBoss Cache
>>>> 
>>>> 
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>>> 
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>> 
>> --
>> Galder Zamarreño
>> Sr. Software Engineer
>> Infinispan, JBoss Cache
>> 
>> 
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> 
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--
Galder Zamarreño
Sr. Software Engineer
Infinispan, JBoss Cache