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https://issues.apache.org/jira/browse/LUCENE-3330?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Robert Muir resolved LUCENE-3330.
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Resolution: Fixed
Assignee: Robert Muir
> revise Scorer visitor API
> -------------------------
>
> Key: LUCENE-3330
> URL: https://issues.apache.org/jira/browse/LUCENE-3330
> Project: Lucene - Java
> Issue Type: Improvement
> Reporter: Robert Muir
> Assignee: Robert Muir
> Fix For: 4.0
>
> Attachments: LUCENE-3330.patch
>
>
> Currently there is an (expert) API in scorer to allow you to take a scorer,
> and visit its children etc (e.g. booleanquery).
> I think we should improve this, so its general to all queries.
> The current issues are:
> * the current api is hardcoded for booleanquery's Occurs, but we should
> support other types of children (e.g. disjunctionmax)
> * it can be difficult to use the API, because of the amount of generics and
> the visitor callback API.
> * the current API enforces a DFS traversal when you might prefer BFS instead.
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