[infinispan-issues] [JBoss JIRA] (ISPN-7108) Use wildcard in methods returning keys

[Dan Berindei (JIRA)]

     [ https://issues.jboss.org/browse/ISPN-7108?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Dan Berindei updated ISPN-7108:
-------------------------------
           Status: Resolved  (was: Pull Request Sent)
    Fix Version/s: 9.0.0.Beta1
       Resolution: Done


> Use wildcard in methods returning keys
> --------------------------------------
>
>                 Key: ISPN-7108
>                 URL: https://issues.jboss.org/browse/ISPN-7108
>             Project: Infinispan
>          Issue Type: Enhancement
>          Components: Core
>            Reporter: Radim Vansa
>            Assignee: Radim Vansa
>             Fix For: 9.0.0.Beta1
>
>
> When a command uses generics (that's the case of functional commands), it stores keys in {{Collection<? extends K>}}. That does not work well with {{getAffectedKeys()}} returning {{Set<Object>}} - besides Collection/Set the generic type also cannot match (because returning {{Set<Object>}} means that you can theoretically insert any {{Object}}). Changing that to wildcard deals with this and makes the collection effectively read-only.



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