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From "Shai Erera (JIRA)" <>
Subject [jira] Created: (LUCENE-1805) CloseableThreadLocal should allow null Objects
Date Thu, 13 Aug 2009 13:00:16 GMT
CloseableThreadLocal should allow null Objects

                 Key: LUCENE-1805
             Project: Lucene - Java
          Issue Type: Bug
          Components: contrib/analyzers
    Affects Versions: 2.4.1
            Reporter: Shai Erera
             Fix For: 2.9

CloseableThreadLocal does not allow null Objects in its get() method, but does nothing to
prevent them in set(Object). The comment in get() before assert v != null is irrelevant -
the application might have passed null.

Null is an important value for Analyzers. Since tokenStreams (a ThreadLocal private member
in Analyzer) is not accessible by extending classes, the only way for an Analyzer to reset
the tokenStreams is by calling setPreviousTokenStream(null).

I will post a patch w/ a test

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