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https://issues.apache.org/jira/browse/VFS-638?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16078342#comment-16078342
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Gary Gregory commented on VFS-638:
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We welcome patches, with unit tests of course ;-)
> FileObject.hasChildren()
> ------------------------
>
> Key: VFS-638
> URL: https://issues.apache.org/jira/browse/VFS-638
> Project: Commons VFS
> Issue Type: New Feature
> Affects Versions: 2.1
> Reporter: Guido Schnepp
> Priority: Minor
>
> It would be great to get new fail-fast hasChildren() method to dertmine if a
> FileObject really has Children or not. You often only need to know if a
> FileObject has minimum one child but don't need to know how many.
> I've tried to simulate this in different ways:
> # fo.getChildren().size() > 0 returns the whole list first and therefore
> takes some time to get the basic information. Too long for only this
> information
> # fo.iterator().next() != fo; (iterator returns the original fo as last child
> again so you need to check if there are other file objects in folder) doesn't
> work either, because the iterator also collects all children before, many
> also these from the subfolders.
> # fo.getType().hasChildren() is nothing more than a static flag in an
> enumeration of types with no real life information
> Many thanks in advance
> Guido
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