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https://issues.apache.org/jira/browse/LUCENE-4647?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Shai Erera resolved LUCENE-4647.
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Resolution: Fixed
Fix Version/s: 5.0
4.1
Lucene Fields: New,Patch Available (was: New)
Committed changes to trunk and 4x. I'm sure there will be more improvements /
simplifications to that API, we can do them incrementally.
> Simplify CategoryDocumentBuilder
> --------------------------------
>
> Key: LUCENE-4647
> URL: https://issues.apache.org/jira/browse/LUCENE-4647
> Project: Lucene - Core
> Issue Type: Improvement
> Components: modules/facet
> Reporter: Shai Erera
> Assignee: Shai Erera
> Fix For: 4.1, 5.0
>
> Attachments: LUCENE-4647.patch
>
>
> CategoryDocumentBuilder is used to add facet fields to a document. Today the
> usage is not so straightforward, and I'd like to simplify it. First, to
> improve usage but also to make cutover to DocValues easier.
> This clsas does two operations: (1) adds drill-down terms and (2) creates the
> fulltree payload. Today, since it does it all on terms, there's a hairy
> TokenStream which does both these operations in one go. For simplicity, I'd
> like to break this into two steps:
> # Write a TokenStream which adds the drill-down terms
> #* For no associations, terms should be indexed w/ DOCS_ONLY (see
> LUCENE-4623).
> #* With associations, drill-down terms have payload too.
> #* So EnhancementsDocumentBuilder should be able to extend this stream.
> # Write some API which can be used to build the fulltree payload (i.e.
> populate a byte[]). Currently that byte[] will be written to a payload and
> later to DV.
> Hopefully, I'd like to have FacetsDocumentBuilder (maybe just FacetsBuilder?)
> which only handles things with no associations, and EnhancementsDocBuilder
> which extends whatever is needed to add associations.
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