[jira] Resolved: (LUCENE-2854) Deprecate SimilarityDelegator and Similarity.lengthNorm

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

     [ https://issues.apache.org/jira/browse/LUCENE-2854?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Michael McCandless resolved LUCENE-2854.
----------------------------------------

    Resolution: Fixed

> Deprecate SimilarityDelegator and Similarity.lengthNorm
> -------------------------------------------------------
>
>                 Key: LUCENE-2854
>                 URL: https://issues.apache.org/jira/browse/LUCENE-2854
>             Project: Lucene - Java
>          Issue Type: Improvement
>            Reporter: Michael McCandless
>             Fix For: 3.1, 4.0
>
>         Attachments: LUCENE-2854.patch, LUCENE-2854_fuzzylikethis.patch
>
>
> SimilarityDelegator is a back compat trap (see LUCENE-2828).
> Apps should just [statically] subclass Sim or DefaultSim; if they really need "runtime subclassing" then they can make their own app-level delegator.
> Also, Sim.computeNorm subsumes lengthNorm, so we should deprecate lengthNorm in favor of computeNorm.

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