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From "Mark Miller (JIRA)" <>
Subject [jira] Created: (LUCENE-1907) sumOfSquared weights should be calculated as part of queryNorm
Date Thu, 10 Sep 2009 23:41:57 GMT
sumOfSquared weights should be calculated as part of queryNorm

                 Key: LUCENE-1907
             Project: Lucene - Java
          Issue Type: Bug
            Reporter: Mark Miller
            Priority: Minor

see the related issue for comments.

its a bummer - doesn't look like we have time to address this, but its the best release for
it - back compat requires the reflection stuff that Similarity already has (and we hope to
remove next release). It would suck to have to hold onto it - so it seems unlikely we will
do this at a later time.

The idea is that the sumOfSquaredWeights computation should be specific to the queryNorm impl
- so the queryNorm should accept the Weight instead, and if its using the euclidean distance
formula, it can do the sumOfSquared calculations - but if its doing another normalization,
these can be skipped (in each termweight, booleanweight, etc). Right now you pay for sumOfSquared
no matter what, and the logic separation is a little off.

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