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From "Karl Wettin (JIRA)" <j...@apache.org>
Subject [jira] Commented: (LUCENE-1257) Port to Java5
Date Mon, 05 Oct 2009 09:58:31 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-1257?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12762131#action_12762131
] 

Karl Wettin commented on LUCENE-1257:
-------------------------------------

bq. err... looks like perhaps its only hit once though and then reused.. maybe not so nasty.
My first time looking at this code, so I'm sure you can clear it up ...

Mark, are you referring to the reflection in Among? Those are pretty tough to get rid of.

I think we should replace the StringBuffers in the stemmers if nobody else minds. But I think
we should do that in another issue. I also found a bit of ASL headers in some of the classes.
Suppose they have been added automatically at some point. These classes are all BSD.

> Port to Java5
> -------------
>
>                 Key: LUCENE-1257
>                 URL: https://issues.apache.org/jira/browse/LUCENE-1257
>             Project: Lucene - Java
>          Issue Type: Improvement
>          Components: Analysis, Examples, Index, Other, Query/Scoring, QueryParser, Search,
Store, Term Vectors
>    Affects Versions: 2.3.1
>            Reporter: C├ędric Champeau
>            Assignee: Uwe Schindler
>            Priority: Minor
>             Fix For: 3.0
>
>         Attachments: instantiated_fieldable.patch, java5.patch, LUCENE-1257-Document.patch,
LUCENE-1257-StringBuffer.patch, LUCENE-1257-StringBuffer.patch, LUCENE-1257-StringBuffer.patch,
LUCENE-1257_messages.patch, lucene1257surround1.patch, lucene1257surround1.patch, shinglematrixfilter_generified.patch
>
>
> For my needs I've updated Lucene so that it uses Java 5 constructs. I know Java 5 migration
had been planned for 2.1 someday in the past, but don't know when it is planned now. This
patch against the trunk includes :
> - most obvious generics usage (there are tons of usages of sets, ... Those which are
commonly used have been generified)
> - PriorityQueue generification
> - replacement of indexed for loops with for each constructs
> - removal of unnececessary unboxing
> The code is to my opinion much more readable with those features (you actually *know*
what is stored in collections reading the code, without the need to lookup for field definitions
everytime) and it simplifies many algorithms.
> Note that this patch also includes an interface for the Query class. This has been done
for my company's needs for building custom Query classes which add some behaviour to the base
Lucene queries. It prevents multiple unnnecessary casts. I know this introduction is not wanted
by the team, but it really makes our developments easier to maintain. If you don't want to
use this, replace all /Queriable/ calls with standard /Query/.

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