Robert Muir created LUCENE-4321:
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Summary: 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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