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https://issues.apache.org/jira/browse/LUCENE-1219?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12621043#action_12621043
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Yonik Seeley commented on LUCENE-1219:
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bq. Also ... it'd be nice to have a way to do this re-use in the non-lazy case.
Ie somehow load a stored doc, but passing in your own Document result which
would attempt to re-use the Field instances & byte[] for the binary fields.
Right. This also gets back to the fact that the Document you retrieve should
probably be different than the Document that you get by loading the stored
fields.
Some sort of lower level callback interface to populate a Document might even
eliminate the need for some of the FieldSelector stuff... or at least it would
mostly be independent of the field reading code and users could create more
advanced implementations.
> support array/offset/ length setters for Field with binary data
> ---------------------------------------------------------------
>
> Key: LUCENE-1219
> URL: https://issues.apache.org/jira/browse/LUCENE-1219
> Project: Lucene - Java
> Issue Type: Improvement
> Components: Index
> Reporter: Eks Dev
> Assignee: Michael McCandless
> Priority: Minor
> Attachments: LUCENE-1219.extended.patch, LUCENE-1219.patch,
> LUCENE-1219.patch, LUCENE-1219.patch, LUCENE-1219.patch,
> LUCENE-1219.take2.patch, LUCENE-1219.take3.patch
>
>
> currently Field/Fieldable interface supports only compact, zero based byte
> arrays. This forces end users to create and copy content of new objects
> before passing them to Lucene as such fields are often of variable size.
> Depending on use case, this can bring far from negligible performance
> improvement.
> this approach extends Fieldable interface with 3 new methods
> getOffset(); gettLenght(); and getBinaryValue() (this only returns reference
> to the array)
>
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