[infinispan-issues] [JBoss JIRA] (ISPN-10014) Deprecate Key2StringMapper

[Dan Berindei (Jira)]

Dan Berindei created ISPN-10014:
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             Summary: Deprecate Key2StringMapper
                 Key: ISPN-10014
                 URL: https://issues.jboss.org/browse/ISPN-10014
             Project: Infinispan
          Issue Type: Bug
          Components: Configuration, Core, Loaders and Stores
    Affects Versions: 10.0.0.Beta2, 9.4.8.Final
            Reporter: Dan Berindei


ISPN-3471 is still valid: {{Key2StringMapper}} is too low-level, as it has to deal with user objects or {{WrappedByteArray}} depending on the memory configuration.

For the vast majority of cases, a key mapper implementation that uses the same marshalling for the keys as for the values should be good enough. It may also use base64 encoding for databases that don't have a `VARBINARY` equivalent, but I'm not sure there are any.

The only use case I see for a custom {{Key2StringMapper}} and a {{VARCHAR}} key column is for external tools to look at the database directly, but we never supported that.



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