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Posted to dev@lucene.apache.org by "Michael McCandless (JIRA)" <ji...@apache.org> on 2010/12/21 19:40:04 UTC

[jira] Created: (LUCENE-2828) SimilarityDelegator broke back-compat for subclasses overriding lengthNorm

SimilarityDelegator broke back-compat for subclasses overriding lengthNorm
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                 Key: LUCENE-2828
                 URL: https://issues.apache.org/jira/browse/LUCENE-2828
             Project: Lucene - Java
          Issue Type: Bug
    Affects Versions: 3.0.3, 3.0.2, 3.0.1, 3.0, 2.9.4, 2.9.3, 2.9.2, 2.9.1, 2.9
            Reporter: Michael McCandless


In LUCENE-1420, we added Similarity.computeNorm to let the norm computation have access to the raw information (length, boost, etc.).

But this class broke back compat with SimilarityDelegator.  We did add computeNorm there, but, it's impl just forwards to the delegee's computeNorm.  In the case where a subclass of SimilarityDelegator overrides lengthNorm, that method will no longer be invoked.

Not quite sure how to fix this since, somehow, we have to determine whether the delegee's impl of computeNorm should be favored over the subclasses impl of the "legacy" lengthNorm.

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[jira] [Commented] (LUCENE-2828) SimilarityDelegator broke back-compat for subclasses overriding lengthNorm

Posted by "Simon Willnauer (Commented) (JIRA)" <ji...@apache.org>.
    [ https://issues.apache.org/jira/browse/LUCENE-2828?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13149173#comment-13149173 ] 

Simon Willnauer commented on LUCENE-2828:
-----------------------------------------

I think we can close this now - I don't see another 2.9 / 3.0 release happening?
                
> SimilarityDelegator broke back-compat for subclasses overriding lengthNorm
> --------------------------------------------------------------------------
>
>                 Key: LUCENE-2828
>                 URL: https://issues.apache.org/jira/browse/LUCENE-2828
>             Project: Lucene - Java
>          Issue Type: Bug
>    Affects Versions: 2.9, 2.9.1, 2.9.2, 2.9.3, 2.9.4, 3.0, 3.0.1, 3.0.2, 3.0.3
>            Reporter: Michael McCandless
>             Fix For: 2.9.5, 3.0.4
>
>         Attachments: LUCENE-2828.patch
>
>
> In LUCENE-1420, we added Similarity.computeNorm to let the norm computation have access to the raw information (length, boost, etc.).
> But this class broke back compat with SimilarityDelegator.  We did add computeNorm there, but, it's impl just forwards to the delegee's computeNorm.  In the case where a subclass of SimilarityDelegator overrides lengthNorm, that method will no longer be invoked.
> Not quite sure how to fix this since, somehow, we have to determine whether the delegee's impl of computeNorm should be favored over the subclasses impl of the "legacy" lengthNorm.

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[jira] Updated: (LUCENE-2828) SimilarityDelegator broke back-compat for subclasses overriding lengthNorm

Posted by "Michael McCandless (JIRA)" <ji...@apache.org>.
     [ https://issues.apache.org/jira/browse/LUCENE-2828?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Michael McCandless updated LUCENE-2828:
---------------------------------------

    Fix Version/s: 3.0.4
                   2.9.5

> SimilarityDelegator broke back-compat for subclasses overriding lengthNorm
> --------------------------------------------------------------------------
>
>                 Key: LUCENE-2828
>                 URL: https://issues.apache.org/jira/browse/LUCENE-2828
>             Project: Lucene - Java
>          Issue Type: Bug
>    Affects Versions: 2.9, 2.9.1, 2.9.2, 2.9.3, 2.9.4, 3.0, 3.0.1, 3.0.2, 3.0.3
>            Reporter: Michael McCandless
>             Fix For: 2.9.5, 3.0.4
>
>         Attachments: LUCENE-2828.patch
>
>
> In LUCENE-1420, we added Similarity.computeNorm to let the norm computation have access to the raw information (length, boost, etc.).
> But this class broke back compat with SimilarityDelegator.  We did add computeNorm there, but, it's impl just forwards to the delegee's computeNorm.  In the case where a subclass of SimilarityDelegator overrides lengthNorm, that method will no longer be invoked.
> Not quite sure how to fix this since, somehow, we have to determine whether the delegee's impl of computeNorm should be favored over the subclasses impl of the "legacy" lengthNorm.

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[jira] Commented: (LUCENE-2828) SimilarityDelegator broke back-compat for subclasses overriding lengthNorm

Posted by "Michael McCandless (JIRA)" <ji...@apache.org>.
    [ https://issues.apache.org/jira/browse/LUCENE-2828?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12979178#action_12979178 ] 

Michael McCandless commented on LUCENE-2828:
--------------------------------------------

We won't fix this for 3.x or 4.0, since we've deprecated SimilarityDelegator, and forced hard cutover from Sim.lengthNorm -> Sim.computeNorm (LUCENE-2854).

But I'll leave this open in case we do another 2.9/3.0 release.

> SimilarityDelegator broke back-compat for subclasses overriding lengthNorm
> --------------------------------------------------------------------------
>
>                 Key: LUCENE-2828
>                 URL: https://issues.apache.org/jira/browse/LUCENE-2828
>             Project: Lucene - Java
>          Issue Type: Bug
>    Affects Versions: 2.9, 2.9.1, 2.9.2, 2.9.3, 2.9.4, 3.0, 3.0.1, 3.0.2, 3.0.3
>            Reporter: Michael McCandless
>             Fix For: 2.9.5, 3.0.4
>
>         Attachments: LUCENE-2828.patch
>
>
> In LUCENE-1420, we added Similarity.computeNorm to let the norm computation have access to the raw information (length, boost, etc.).
> But this class broke back compat with SimilarityDelegator.  We did add computeNorm there, but, it's impl just forwards to the delegee's computeNorm.  In the case where a subclass of SimilarityDelegator overrides lengthNorm, that method will no longer be invoked.
> Not quite sure how to fix this since, somehow, we have to determine whether the delegee's impl of computeNorm should be favored over the subclasses impl of the "legacy" lengthNorm.

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[jira] [Resolved] (LUCENE-2828) SimilarityDelegator broke back-compat for subclasses overriding lengthNorm

Posted by "Robert Muir (Resolved) (JIRA)" <ji...@apache.org>.
     [ https://issues.apache.org/jira/browse/LUCENE-2828?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Robert Muir resolved LUCENE-2828.
---------------------------------

    Resolution: Won't Fix
      Assignee: Robert Muir
    
> SimilarityDelegator broke back-compat for subclasses overriding lengthNorm
> --------------------------------------------------------------------------
>
>                 Key: LUCENE-2828
>                 URL: https://issues.apache.org/jira/browse/LUCENE-2828
>             Project: Lucene - Java
>          Issue Type: Bug
>    Affects Versions: 2.9, 2.9.1, 2.9.2, 2.9.3, 2.9.4, 3.0, 3.0.1, 3.0.2, 3.0.3
>            Reporter: Michael McCandless
>            Assignee: Robert Muir
>             Fix For: 2.9.5, 3.0.4
>
>         Attachments: LUCENE-2828.patch
>
>
> In LUCENE-1420, we added Similarity.computeNorm to let the norm computation have access to the raw information (length, boost, etc.).
> But this class broke back compat with SimilarityDelegator.  We did add computeNorm there, but, it's impl just forwards to the delegee's computeNorm.  In the case where a subclass of SimilarityDelegator overrides lengthNorm, that method will no longer be invoked.
> Not quite sure how to fix this since, somehow, we have to determine whether the delegee's impl of computeNorm should be favored over the subclasses impl of the "legacy" lengthNorm.

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[jira] Updated: (LUCENE-2828) SimilarityDelegator broke back-compat for subclasses overriding lengthNorm

Posted by "Michael McCandless (JIRA)" <ji...@apache.org>.
     [ https://issues.apache.org/jira/browse/LUCENE-2828?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Michael McCandless updated LUCENE-2828:
---------------------------------------

    Attachment: LUCENE-2828.patch

Patch w/ test case showing the failure.

> SimilarityDelegator broke back-compat for subclasses overriding lengthNorm
> --------------------------------------------------------------------------
>
>                 Key: LUCENE-2828
>                 URL: https://issues.apache.org/jira/browse/LUCENE-2828
>             Project: Lucene - Java
>          Issue Type: Bug
>    Affects Versions: 2.9, 2.9.1, 2.9.2, 2.9.3, 2.9.4, 3.0, 3.0.1, 3.0.2, 3.0.3
>            Reporter: Michael McCandless
>         Attachments: LUCENE-2828.patch
>
>
> In LUCENE-1420, we added Similarity.computeNorm to let the norm computation have access to the raw information (length, boost, etc.).
> But this class broke back compat with SimilarityDelegator.  We did add computeNorm there, but, it's impl just forwards to the delegee's computeNorm.  In the case where a subclass of SimilarityDelegator overrides lengthNorm, that method will no longer be invoked.
> Not quite sure how to fix this since, somehow, we have to determine whether the delegee's impl of computeNorm should be favored over the subclasses impl of the "legacy" lengthNorm.

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