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https://issues.apache.org/jira/browse/LUCENE-2380?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Yonik Seeley updated LUCENE-2380:
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Attachment: LUCENE-2380_enum.patch
Here's an updated "terms enum over fieldcache" patch.
PagedBytes now keeps track of how much space was used in each byte array and
allows access to the raw blocks and end info. Slightly less elegant, but it
works.
I still need to do performance testing with this.
> Add FieldCache.getTermBytes, to load term data as byte[]
> --------------------------------------------------------
>
> Key: LUCENE-2380
> URL: https://issues.apache.org/jira/browse/LUCENE-2380
> Project: Lucene - Java
> Issue Type: Improvement
> Components: Search
> Reporter: Michael McCandless
> Assignee: Michael McCandless
> Fix For: 4.0
>
> Attachments: LUCENE-2380.patch, LUCENE-2380.patch, LUCENE-2380.patch,
> LUCENE-2380.patch, LUCENE-2380_enum.patch, LUCENE-2380_enum.patch
>
>
> With flex, a term is now an opaque byte[] (typically, utf8 encoded unicode
> string, but not necessarily), so we need to push this up the search stack.
> FieldCache now has getStrings and getStringIndex; we need corresponding
> methods to load terms as native byte[], since in general they may not be
> representable as String. This should be quite a bit more RAM efficient too,
> for US ascii content since each character would then use 1 byte not 2.
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