[jira] Commented: (LUCENE-1680) Make prefixLength accessible to PrefixTermEnum subclasses

["Michael McCandless (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/LUCENE-1680?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12718024#action_12718024 ] 

Michael McCandless commented on LUCENE-1680:
--------------------------------------------

Should we just add a getter for the prefix Term, to be more general?

Also, I think we can't suddenly change protected methods to private (that breaks back compat).

> Make prefixLength accessible to PrefixTermEnum subclasses
> ---------------------------------------------------------
>
>                 Key: LUCENE-1680
>                 URL: https://issues.apache.org/jira/browse/LUCENE-1680
>             Project: Lucene - Java
>          Issue Type: Improvement
>    Affects Versions: 2.9
>            Reporter: Simon Willnauer
>            Assignee: Michael McCandless
>            Priority: Minor
>             Fix For: 2.9
>
>         Attachments: PrefixTermEnum.patch
>
>
> PrefixTermEnum#difference() offers a way to influence scoring based on the difference between the prefix Term and a term in the enumeration. To effectively use this facility the length of the prefix should be accessible to subclasses. Currently the prefix term is private to PrefixTermEnum. I added a getter for the prefix length and made PrefixTermEnum#endEnum(), PrefixTermEnum#termCompare() final for consistency with other TermEnum subclasses.
> Patch is attached.
> Simon

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