[infinispan-issues] [JBoss JIRA] (ISPN-3675) Revisit covariant return type for various implementations

[William Burns (JIRA)]

William Burns created ISPN-3675:
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             Summary: Revisit covariant return type for various implementations
                 Key: ISPN-3675
                 URL: https://issues.jboss.org/browse/ISPN-3675
             Project: Infinispan
          Issue Type: Enhancement
    Affects Versions: 6.0.0.CR1
            Reporter: William Burns
            Assignee: Mircea Markus


We use interfaces all over the place, which is great.  However a lot of implementations currently only define their return types to be that of the type defined in the interface.  However we can change the implementation return type of the method to be covariant which allows for direct users of the implementation to use the subclass if desired.

This especially came up in the discussion here: https://github.com/infinispan/infinispan/pull/2177/files#r7375883 as we could remove redundant casts which would provide cleaner code.

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