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From "Yonik Seeley (JIRA)" <j...@apache.org>
Subject [jira] Commented: (LUCENE-871) ISOLatin1AccentFilter a bit slow
Date Mon, 20 Aug 2007 19:41:31 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-871?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12521211
] 

Yonik Seeley commented on LUCENE-871:
-------------------------------------

It seems that any table based approach would need to take up 256 slots at most... one could
get away with 64 too (0xff-0xc0+1).
In any case, with normal latin1 text with an average amount of accents and a normal analyzer,
does the current version really slow things down anymore?

Dawid: a lookupswitch is O(1), no?


> ISOLatin1AccentFilter a bit slow
> --------------------------------
>
>                 Key: LUCENE-871
>                 URL: https://issues.apache.org/jira/browse/LUCENE-871
>             Project: Lucene - Java
>          Issue Type: Bug
>          Components: Analysis
>    Affects Versions: 1.9, 2.0.0, 2.0.1, 2.1, 2.2
>            Reporter: Ian Boston
>            Assignee: Michael McCandless
>             Fix For: 2.3
>
>         Attachments: fasterisoremove1.patch, fasterisoremove2.patch, ISOLatin1AccentFilter.java.patch,
LUCENE-871.take4.patch
>
>
> The ISOLatin1AccentFilter is a bit slow giving 300+ ms responses when used in a highligher
for output responses.
> Patch to follow

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