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https://issues.apache.org/jira/browse/LUCENE-6225?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dawid Weiss updated LUCENE-6225:
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Fix Version/s: 5.3
> Clarify documentation of clone() in IndexInput
> ----------------------------------------------
>
> Key: LUCENE-6225
> URL: https://issues.apache.org/jira/browse/LUCENE-6225
> Project: Lucene - Core
> Issue Type: Improvement
> Reporter: Dawid Weiss
> Assignee: Dawid Weiss
> Priority: Minor
> Fix For: 5.3, Trunk
>
> Attachments: LUCENE-6225.patch
>
>
> Here is a snippet from IndexInput's documentation:
> {code}
> The original instance must take care that cloned instances throw
> AlreadyClosedException when the original one is closed.
> {code}
> But concrete implementations don't throw this AlreadyClosedException (this
> would break the contract on Closeable). For example, see NIOFSDirectory:
> {code}
> public void close() throws IOException {
> if (!isClone) {
> channel.close();
> }
> }
> {code}
> What trapped me was that the abstract class IndexInput overrides the default
> implementation of clone(), but doesn't do anything useful... I guess you
> could make it final and provide the tracking for cloned instances in this
> class rather than reimplementing it everywhere else (isCloned() would be a
> superclass method then too). Thoughts?
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