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https://issues.apache.org/jira/browse/CLEREZZA-686?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13203440#comment-13203440
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Reto Bachmann-Gmür commented on CLEREZZA-686:
---------------------------------------------

Just delegating to the inherited hashCode and equals from Object satisfies the 
contract and poses no synchronization issues. Delegating to the wrapped MGraph 
would be better, a locking isn't needed in this case either as an MGraph 
doesn't change its identity by triples being added or removed.
                
> LockableMGraphWrapper does not implement hashCode, equals and toString
> ----------------------------------------------------------------------
>
>                 Key: CLEREZZA-686
>                 URL: https://issues.apache.org/jira/browse/CLEREZZA-686
>             Project: Clerezza
>          Issue Type: Improvement
>          Components: rdf.core
>            Reporter: Rupert Westenthaler
>            Assignee: Daniel Spicar
>            Priority: Trivial
>         Attachments: 
> CLEREZZA-686_rdf.core-LockableMGraphWrapper-hasCode-equals-toString.patch
>
>
> LockableMGraphWrapper does not implement hashCode, equals and toString. This 
> is not a big issue, because MGraphs are rarely used with sets or maps, but it 
> is at least inconvenient for logging and debugging.

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