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https://issues.apache.org/jira/browse/LUCENE-4343?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Robert Muir updated LUCENE-4343:
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Attachment: LUCENE-4343.patch
Updated patch: with setReader as final :)
> Clear up more Tokenizer.setReader/TokenStream.reset issues
> ----------------------------------------------------------
>
> Key: LUCENE-4343
> URL: https://issues.apache.org/jira/browse/LUCENE-4343
> Project: Lucene - Core
> Issue Type: Task
> Components: modules/analysis
> Reporter: Robert Muir
> Attachments: LUCENE-4343.patch, LUCENE-4343.patch, LUCENE-4343.patch
>
>
> spinoff from user-list thread.
> I think the rename helps, but the javadocs still have problems: they seem to
> only describe a totally wacky case (CachingTokenFilter) and not the normal
> case.
> Ideally setReader would be final I think, but there are a few crazy
> tokenstreams to fix before I could make that work. Would also need something
> hackish so MockTokenizer's state machine is still functional.
> But i worked on fixing up the mess in our various tokenstreams, which is easy
> for the most part.
> As part of this I found it was really useful in flushing out test bugs (ones
> that dont use MockTokenizer, which they really should), if we can do some
> best-effort exceptions when the consumer is broken and it costs nothing.
> For example:
> {noformat}
> - private int offset = 0, bufferIndex = 0, dataLen = 0, finalOffset = 0;
> + // note: bufferIndex is -1 here to best-effort AIOOBE consumers that don't
> call reset()
> + private int offset = 0, bufferIndex = -1, dataLen = 0, finalOffset = 0;
> {noformat}
> I think this is worth exploring more... this was really effective at finding
> broken tests etc. We should see if we can be more thorough/ideally throw
> better exceptions when consumers are broken and its free.
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