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https://issues.apache.org/jira/browse/JCR-1513?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12589591#action_12589591
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Julian Reschke commented on JCR-1513:
-------------------------------------

Proposal:

1) Allow checkin to return a NodeId *or* null (for easier migration of existing 
SPI impls)

2) Use the non-null return value in JCR2SPI to avoid fetching the base version.

Then finally:

3) Get rid of the support for null return values.


> RepositoryService.checkin should return information about newly created 
> version
> -------------------------------------------------------------------------------
>
>                 Key: JCR-1513
>                 URL: https://issues.apache.org/jira/browse/JCR-1513
>             Project: Jackrabbit
>          Issue Type: Improvement
>          Components: jackrabbit-spi
>            Reporter: Julian Reschke
>            Assignee: Julian Reschke
>
> We have a mismatch between Node.checkin(), which returns a new Version 
> object, and RepositoryService.checkin(), which returns void.
> Client of SPI, such as JCR2SPI, thus will have to make an additional request 
> for the base version property, with the obvious drawbacks (another call, and 
> a potential cause for a race condition).
> Proposal: change the return code to NodeId.
>  

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