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Posted to dev@lucene.apache.org by "Michael McCandless (JIRA)" <ji...@apache.org> on 2015/04/06 12:03:12 UTC
[jira] [Commented] (LUCENE-5989) Add BinaryField, to index a single
binary token
[ https://issues.apache.org/jira/browse/LUCENE-5989?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14481102#comment-14481102 ]
Michael McCandless commented on LUCENE-5989:
--------------------------------------------
I think now that LUCENE-5879 is in, as a dark/unusable feature, we should add BinaryField (this issue) to at least shed a bit of light on it.
With BinaryField, apps can efficiently prefix and range search anything they can convert to/from byte[], e.g. BigInteger/Decimal, InetAddress (LUCENE-5596), int/long/float/double, etc. On the LUCENE-6005 branch there is also a half-precision float (2 bytes).
I don't think Lucene's lack of schema is a justifiable reason to block progress here.
> Add BinaryField, to index a single binary token
> -----------------------------------------------
>
> Key: LUCENE-5989
> URL: https://issues.apache.org/jira/browse/LUCENE-5989
> Project: Lucene - Core
> Issue Type: Improvement
> Reporter: Michael McCandless
> Assignee: Michael McCandless
> Fix For: 5.0, Trunk
>
> Attachments: LUCENE-5989.patch
>
>
> 5 years ago (LUCENE-1458) we "enabled" fully binary terms in the
> lowest levels of Lucene (the codec APIs) yet today, actually adding an
> arbitrary byte[] binary term during indexing is far from simple: you
> must make a custom Field with a custom TokenStream and a custom
> TermToBytesRefAttribute, as far as I know.
> This is supremely expert, I wonder if anyone out there has succeeded
> in doing so?
> I think we should make indexing a single byte[] as simple as indexing
> a single String.
> This is a pre-cursor for issues like LUCENE-5596 (encoding IPv6
> address as byte[16]) and LUCENE-5879 (encoding native numeric values
> in their simple binary form).
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