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https://issues.apache.org/jira/browse/LUCENE-3789?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13211084#comment-13211084
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Simon Willnauer commented on LUCENE-3789:
-----------------------------------------
bq. Looks fine. I would make the access method final.
well, I actually didn't make this final on purpose. if you want to filter the
enum used for rewriting you can now simply override and call
super.getTermsEnum(...) otherwise you need to subclass all MTQ you want to
filter and change QParsers etc. that way we can simply subclass one rewrite
method and we are good to go. I have a usecase where I drop terms based on
their DF so this would make this much easier...
> Expose FilteredTermsEnum from MTQ
> ----------------------------------
>
> Key: LUCENE-3789
> URL: https://issues.apache.org/jira/browse/LUCENE-3789
> Project: Lucene - Java
> Issue Type: Improvement
> Components: core/search
> Affects Versions: 3.6, 4.0
> Reporter: Simon Willnauer
> Priority: Minor
> Fix For: 3.6, 4.0
>
> Attachments: LUCENE-3789.patch
>
>
> MTQ#getEnum() is protected and in order to access it you need to be in the
> o.a.l.search package.
> here is a relevant snipped from the mailing list discussion
> {noformat}
> getEnum() is protected so it is intended to be called *only* by subclasses
> (that's the idea behind protected methods). They are also accessible by other
> classes from the same package, but that's more a Java bug than a feature. The
> problem with MTQ is that RewriteMethod is a separate *class* and *not a
> subclass* of MTQ, so the method cannot be called (it can because of the "java
> bug" called from same package). So theoretically it has to be public
> otherwise you cannot call getEnum().
> Another cleaner fix would be to add a protected final method to RewriteMethod
> that calls this method from MTQ. So anything subclassing RewriteMethod can
> get the enum from inside the RewriteMethod class which is the "correct" way
> to handle it. Delegating to MTQ is then "internal".
> {noformat}
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