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https://issues.apache.org/jira/browse/LUCENE-2354?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Uwe Schindler updated LUCENE-2354:
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Attachment: LUCENE-2354.patch
Here a first preview patch.
NumericUtils still contains lots of unused String-based methods, I think we
should remove them, the class is expert-only and also experimental. Backwards
compatibility is broken even with those backwards layers (as the split
functions were changed to use BytesRefs. Also these backwards methods are
simply slow now (as the byte[] is copied to char[] and vice-versa).
The new NumericTokenStream now uses a special NumericTermAttribute, so possibly
Filters coming later have access to shift value and so on. This attribute also
implements the TermToBytesRefAttribute for the indexer. Please note: This
attribute is a hack and does not support copyTo/clone/...., so you cannot put
away tokens (which is not needed), but its still possible to add further
attributes to numeric tokens (which is why the attribute is there).
The NumericTokenStream backwards test was removed, because the new stream does
no longer contain a TermAttribute, so the test always fails.
TODO: A better inline-hashCode generation for the numeric-to-BytesRef
transformation
> Convert NumericUtils and NumericTokenStream to use BytesRef instead of
> Strings/char[]
> -------------------------------------------------------------------------------------
>
> Key: LUCENE-2354
> URL: https://issues.apache.org/jira/browse/LUCENE-2354
> Project: Lucene - Java
> Issue Type: Improvement
> Affects Versions: Flex Branch
> Reporter: Uwe Schindler
> Assignee: Uwe Schindler
> Fix For: Flex Branch
>
> Attachments: LUCENE-2354.patch
>
>
> After LUCENE-2302, we should use TermToBytesRefAttribute to index using
> NumericTokenStream. This also should convert the whole NumericUtils to use
> BytesRef when converting numerics.
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