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https://issues.apache.org/jira/browse/SOLR-5524?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Trey Grainger updated SOLR-5524:
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Attachment: SOLR-5524.patch
Simple patch. Just changing the ScaleFloatFunction function to use itself as
the key instead of the ValueSource it is using internally (it's first
parameter). This seems consistent with how other ValueSources (such as the
QueryValueSource) work, and it fixes the issue at hand.
> Exception when using Query Function inside Scale Function
> ---------------------------------------------------------
>
> Key: SOLR-5524
> URL: https://issues.apache.org/jira/browse/SOLR-5524
> Project: Solr
> Issue Type: Bug
> Affects Versions: 4.6
> Reporter: Trey Grainger
> Priority: Minor
> Fix For: 4.7
>
> Attachments: SOLR-5524.patch
>
>
> If you try to use the query function inside the scale function, it throws the
> following exception:
> org.apache.lucene.search.BooleanQuery$BooleanWeight cannot be cast to
> org.apache.lucene.queries.function.valuesource.ScaleFloatFunction$ScaleInfo
> Here is an example request that invokes this:
> http://localhost:8983/solr/collection1/select?q=*:*&fl=scale(query($x),0,5)&x=hello)
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