[infinispan-dev] [ISPN-548] Discussion on updating the QueryInterceptor to be able to update old keys

[Manik Surtani]

On 21 Jul 2010, at 12:54, Navin Surtani wrote:

> 1 - User does a put()
> 2 - Interceptor checks the set of keys used within the same context to 
> see if the same key has been used
> 3 - If it has an UPDATE is used.
> 4 - If not we do an ADD.

Sorry, just saw this.  To confirm, this should work even beyond the scope of a single invocation, and even a single transaction, correct?  E.g.,:

Tx1:
	1) creates a NEW entry using cache.put()
	2) new entry is indexed

Tx2 (potentially at a later date):
	1) updates the entry using cache.put()
	2) the index should be updated

So to that end, just checking the presence of the entry in the invocation context is not good enough - all it will tell you is whether the entry was touched within the same scope (whether that scope is an invocation or a transaction is irrelevant).  

Mircea's solution of testing entry.isCreated() is a valid one.

Cheers
Manik

--
Manik Surtani
manik at jboss.org
Lead, Infinispan
Lead, JBoss Cache
http://www.infinispan.org
http://www.jbosscache.org