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https://issues.apache.org/jira/browse/LUCENE-6301?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14348799#comment-14348799
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David Smiley commented on LUCENE-6301:
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Hi Adrien.
bq. But it should be possible to migrate it to two-phase approximations and
having FilteredQuery deprecated in the meantime will help ensure no new code is
using it. I don't think it should hold this issue as having filters removed
from the core is already a good step towards removing filters entirely?
+1. I think migrating it would be a separate JIRA issue to be created. Can it
still throw an exception if you use it in such a way as to iterate? This is to
prevent people from mis-using it. Do you know of a similar scorer I can look
at?
Another API change to deprecate filters is modifying the SpatialStrategy
abstraction. It has a makeQuery and makeFilter pair of methods, which are
effectively the same thing except for the return type. I think makeFilter
should become deprecated now (as part of this issue).
> Deprecate Filter
> ----------------
>
> Key: LUCENE-6301
> URL: https://issues.apache.org/jira/browse/LUCENE-6301
> Project: Lucene - Core
> Issue Type: Task
> Reporter: Adrien Grand
> Assignee: Adrien Grand
> Fix For: Trunk, 5.1
>
> Attachments: LUCENE-6301.patch
>
>
> It will still take time to completely remove Filter, but I think we should
> start deprecating it now to state our intention and encourage users to move
> to queries as soon as possible?
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