[jboss-jira] [JBoss JIRA] Updated: (JBCACHE-777) Creating a custom cache loader which delegates to a standard cache loader, can generate misleading WARN messages

[Galder Zamarreno (JIRA)]

     [ http://jira.jboss.com/jira/browse/JBCACHE-777?page=all ]

Galder Zamarreno updated JBCACHE-777:
-------------------------------------

    Affects Version/s: 2.0.0

Added 2.0

> Creating a custom cache loader which delegates to a standard cache loader, can generate misleading WARN messages
> ----------------------------------------------------------------------------------------------------------------
>
>                 Key: JBCACHE-777
>                 URL: http://jira.jboss.com/jira/browse/JBCACHE-777
>             Project: JBoss Cache
>          Issue Type: Bug
>      Security Level: Public(Everyone can see) 
>    Affects Versions: 2.0.0, 1.3.0.SP3, 1.4.0.SP1
>            Reporter: Galder Zamarreno
>         Assigned To: Galder Zamarreno
>            Priority: Minor
>
> FileCacheLoader can return a null value for get(fqn) if the node does not exist.
>  /**
>     * Returns all keys and values from the persistent store, given a fully qualified name.
>     *
>     * NOTE that the expected return value of this method has changed from JBossCache 1.2.x
>     * and before!  This will affect cache loaders written prior to JBossCache 1.3.0 and such
>     * implementations should be checked for compliance with the behaviour expected.
>     *
>     * @param name
>     * @return Map<Object,Object> keys and values for the given node. Returns
>     * null if the node is not found.  If the node is found but has no
>     * attributes, this method returns an empty Map.
>     * @throws Exception
>  */
> If the customer creates a custom cache loader which delegates to a FileCacheLoader, the 
> following misleading warning message is logged:
> 10:52:10.839 WARN [MessageListenerThread - Belvedere/Desk/CacheLoaderInterceptor] CacheLoader.get(Fqn) returned a null; assuming the node nodes not exist.
> 10:52:10.839 WARN [MessageListenerThread - Belvedere/Desk/CacheLoaderInterceptor] The CacheLoader interface has changed since JBossCache 1.3.x
> 10:52:10.839 WARN [MessageListenerThread - Belvedere/Desk/CacheLoaderInterceptor] Please see http://jira.jboss.com/jira/browse/JBCACHE-118
> 10:52:10.849 WARN [MessageListenerThread - Belvedere/Desk/CacheLoaderInterceptor] CacheLoader.get() should return an empty Map if the node does exist but doesn't have any attributes.
> This occurrs even though the FileCacheLoader is actually doing the job accordingly.

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