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https://issues.apache.org/jira/browse/LUCENE-6232?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14313691#comment-14313691
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Ryan Ernst commented on LUCENE-6232:
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[~mdrob] See LUCENE-5335 for some previous work here. IIRC, most of the
warnings here were because of the raw map, which that issue tried to address by
changing it to a String->Object map. The content of the map is pretty
arbitrary.
> Replace ValueSource context Map with a more concrete data type
> --------------------------------------------------------------
>
> Key: LUCENE-6232
> URL: https://issues.apache.org/jira/browse/LUCENE-6232
> Project: Lucene - Core
> Issue Type: Improvement
> Reporter: Mike Drob
>
> Inspired by LUCENE-3973
> The context object used by ValueSource and friends is a raw Map that provides
> no type safety guarantees. In our current state, there are lots of warnings
> about unchecked casts, raw types, and generally unsafe code from the
> compiler's perspective.
> There are several common patterns and types of Objects that we store in the
> context. It would be beneficial to instead use a class with typed methods for
> get/set of Scorer, Weights, etc.
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