[jira] Resolved: (LUCENE-2700) Expose DocValues via Fields

["Simon Willnauer (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/LUCENE-2700?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Simon Willnauer resolved LUCENE-2700.
-------------------------------------

    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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