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https://issues.apache.org/jira/browse/LUCENE-4321?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Robert Muir updated LUCENE-4321:
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Attachment: LUCENE-4321.patch
Here's a patch.
> java.io.FilterReader considered harmful
> ---------------------------------------
>
> Key: LUCENE-4321
> URL: https://issues.apache.org/jira/browse/LUCENE-4321
> Project: Lucene - Core
> Issue Type: Bug
> Affects Versions: 4.0-BETA
> Reporter: Robert Muir
> Fix For: 5.0, 4.0
>
> Attachments: LUCENE-4321.patch
>
>
> See Dawid's email: http://find.searchhub.org/document/64b0a28c53faf39
> Reader.java is fine, it has lots of methods like read(), read(char[]),
> read(CharBuffer), skip(), but these all have default implementations
> delegating to read(char[], int, int).
> Unfortunately FilterReader delegates too many unnecessary things such as
> read() and skip() in a broken way. It should have just left these alone.
> This can cause traps for someone upgrading because they have to override
> multiple methods, when read(char[], int, int) should be enough, and all
> Reader methods will then work correctly.
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