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https://issues.apache.org/jira/browse/LUCENE-2700?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Simon Willnauer resolved LUCENE-2700.
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Resolution: Fixed
this is done since a while ago - closing
> Expose DocValues via Fields
> ---------------------------
>
> Key: LUCENE-2700
> URL: https://issues.apache.org/jira/browse/LUCENE-2700
> Project: Lucene - Java
> Issue Type: New Feature
> Components: Index
> Reporter: Simon Willnauer
> Assignee: Simon Willnauer
> Fix For: CSF branch
>
>
> DocValues Reader are currently exposed / accessed directly via IndexReader.
> To integrate the new feature in a more "native" way we should expose the
> DocValues via Fields on a perSegment level and on MultiFields in the multi
> reader case. DocValues should be side by side with Fields.terms enabling
> access to Source, SortedSource and ValuesEnum something like that:
> {code}
> public abstract class Fields {
> ...
> public DocValues values();
> }
> public abstract class DocValues {
> /** on disk enum based API */
> public abstract ValuesEnum getEnum() throws IOException;
> /** in memory Random Access API - with enum support - first call loads
> values in ram*/
> public abstract Source getSource() throws IOException;
> /** sorted in memory Random Access API - optional operation */
> public SortedSource getSortedSource(Comparator<BytesRef> comparator) throws
> IOException, UnsupportedOperationException;
> /** unloads previously loaded source only but keeps the doc values open */
> public abstract unload();
> /** closes the doc values */
> public abstract close();
> }
> {code}
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