[jira] Commented: (JCR-1405) SPI: Introduce NodeInfo.getChildInfos()

["Michael Dürig (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/JCR-1405?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12571041#action_12571041 ] 

Michael Dürig commented on JCR-1405:
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I'm in favor of Angela's suggestion. I would generalize the meaning of null returned by ChildInfo[] NodeInfo.getChildInfos() to 'ask me later'. That is, whenever ChildInfo[] NodeInfo.getChildInfos() returns null, the spi implementation cannot or for some reason deliberately does not want to return the ChildInfos. The client would then have to collect the ChildInfos later by a call to RepositoryService.getChildInfos. 

Also I think the client should use the ChildInfos returned by NodeInfo.getChildInfos() whenever possible. It should only call RepositoryService.getChildInfos when absolutely necessary.


> SPI: Introduce NodeInfo.getChildInfos()
> ---------------------------------------
>
>                 Key: JCR-1405
>                 URL: https://issues.apache.org/jira/browse/JCR-1405
>             Project: Jackrabbit
>          Issue Type: New Feature
>          Components: jackrabbit-spi
>            Reporter: angela
>
> Improvement suggested by Marcel:
> ChildInfo is basically a stripped down NodeInfo. With little effort it would even be possible to have NodeInfo extends ChildInfo. Not sure how useful that is, but since we don't have that inheritance in code and at the same time nearly a 100% overlap it makes me suspicious.
> Here's another idea:
> introduce a method ChildInfo[] NodeInfo.getChildInfos(). The method either returns:
> - all child infos, which also gives the correct number of child nodes. this may also mean that an empty array is returned to indicate there are no child nodes.
> - null, to indicate that there are *lots* of child nodes and the method RepositoryService.getChildInfos() with the iterator should be used. 

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