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From "Hoss Man (JIRA)" <>
Subject [jira] Commented: (LUCENE-1290) Deprecate Hits
Date Tue, 20 May 2008 00:16:55 GMT


Hoss Man commented on LUCENE-1290:

FYI: when applying the patch, i got two failed hunks in src/test/org/apache/lucene/search/
-- but i didn't dig into why, possibly due to eol-style not being set on the files or perhaps
because of tabs (see below)

The only files I looked at closely where the Hits class, the demo code, and the docs...

We should probably make the deprecation of Hits more obvious in it's class level javadocs
... i would even go so far as to suggest including sample code showing the difference for
people who are use to using hits.

The new demo app seems straight forward and easy to understand, although
we should probably add some more javadocs to doPagingSearch and doStreamingSearch to explain
what we mean by those concepts.  The new code in both of these methods (ie: lines using HitCollector
and TopDocCollector) seem to be indented with tabs and not space characters ... so that should
be normalized (i didn't check other files modified by the patch to see if they were likewise

The changes to demo2.xml seem straight forward enough ... although I notice Hits is still
referenced in scoring.xml so that should be changed also.

> Deprecate Hits
> --------------
>                 Key: LUCENE-1290
>                 URL:
>             Project: Lucene - Java
>          Issue Type: Task
>          Components: Search
>            Reporter: Michael Busch
>            Assignee: Michael Busch
>            Priority: Minor
>             Fix For: 2.4
>         Attachments: lucene-1290.patch
> The Hits class has several drawbacks as pointed out in LUCENE-954.
> The other search APIs that use TopDocCollector and TopDocs should be used instead.
> This patch:
> - deprecates org/apache/lucene/search/Hits, Hit, and HitIterator, as well as
>   the * ) methods which return a Hits Object.
> - removes all references to Hits from the core and uses TopDocs and ScoreDoc
>   instead
> - Changes the demo SearchFiles: adds the two modes 'paging search' and 'streaming search',
>   each of which demonstrating a different way of using the search APIs. The former
>   uses TopDocs and a TopDocCollector, the latter a custom HitCollector implementation.
> - Updates the online tutorial that descibes the demo.
> All tests pass.

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