[infinispan-dev] infinispan cache retrieval - byte[]

[Gustavo Fernandes]

Hi Alessandro, this kind of question is better suited for the forums [1],
since this list if for development related discussions.

But since we're here, regarding your question:

What's probably happening is that since you are creating a cache inside the
servlet from the cache manager that is also used by the Infinispan server,
this cache is internally being created with an encoding scheme suitable to
used for remote clients, meaning storage will be POJO but reads/writes will
be done using byte[].

In Infinispan 9.1.0 you can choose the encoding to read and write from a
particular cache: so in your case, from you servlet, you can specify that
you don't want
any encoding by wrapping your cache with:

Cache c = cache.getAdvancedCache().withEncoding(IdentityEncoder.class)

[1] http://infinispan.org/community/

On Wed, Aug 30, 2017 at 6:16 PM, Alessandro Vaccarezza <
avaccarezza at c2b2.co.uk> wrote:

> Hi guys,
>
>
>
> we ar facing an issue since quite a long time and can't come up with a
> solution.
>
>
>
> Our simple application is deployed on a wildfly instance and make use of a
> local infinispan data store (infinispan-9.1.0.Final).
>
>
>
> Wildfly resides on a CentOS 6.8 instance, Java version is 1.8.0_112.
>
>
>
> We implemented a very basic servlet and registered as a listener. Within
> this servlet we use an org.infinispan.manager.EmbeddedCacheManager to
> retrieve an
>
> existing cache and add values to it.
>
>
>
> Compatibility mode is on.
>
>
>
> The values added to the cache are instance of a simple Java POJO.
>
>
>
> When we try to retrieve what we just added, within the same servlet, we
> get a byte array, no way to retrieve the original POJO.
>
> When we force the cast we get the obvious:
>
>
>
> *java.lang.ClassCastException: [B cannot be cast to com.my.pojo.SamplePOJO
> *
>
>
>
> Servlet: https://gist.github.com/anonymous/e8752cc8457301c2c70b3255e5c3bb
> c5
>
> POJO: https://gist.github.com/anonymous/f35900875500a4bd6b4bb3b0cf73a363
>
> Infinispan config file: https://gist.github.com/anonymous/
> b8482595f6b86ecc5642cceb6a99ad5e
>
>
>
> Retrieving the cache via Hot Rod client works fine; also, if compatibility
> mode is turned off everything works fine as well.
>
> _______________________________________________
> infinispan-dev mailing list
> infinispan-dev at lists.jboss.org
> https://lists.jboss.org/mailman/listinfo/infinispan-dev
>
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