[infinispan-issues] [JBoss JIRA] Updated: (ISPN-244) Enable external user/framework defined Externalizers

[Galder Zamarreno (JIRA)]

     [ https://jira.jboss.org/jira/browse/ISPN-244?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Galder Zamarreno updated ISPN-244:
----------------------------------

    Component/s: Marshalling
                     (was: RPC)
       Assignee:     (was: Galder Zamarreno)


> Enable external user/framework defined Externalizers
> ----------------------------------------------------
>
>                 Key: ISPN-244
>                 URL: https://jira.jboss.org/jira/browse/ISPN-244
>             Project: Infinispan
>          Issue Type: Feature Request
>          Components: Marshalling
>            Reporter: Galder Zamarreno
>             Fix For: 4.1.0.BETA1
>
>
> Create an internal magic number (i.e. -1 or 255) for user defined externalizers. This is done to avoid users using our number space.
> So, internally: <magic_number> <stream>
> Users: <magic_number><user defined magic number (int)> <stream>
> Mandate unsigned ints so that we can optimise by sending them as variable lenght
> Internal frameworks could use high enough numbers for example up to 2 bytes: 5000, 7000, 20000
> 1 byte: 128
> 2 bytes: 32767
> 3 bytes: ...
> GlobalConfiguration.registerMarshallable(Class type, Externalizer ext, int id);
> Maybe CacheManager better?
> CacheManager.registerMarshallable(Class type, Externalizer ext, int id);
> Future improvement, maybe generate ids automatically for user defined classes?

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