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From "Robert Muir (JIRA)" <>
Subject [jira] Commented: (LUCENE-1817) it is impossible to use a custom dictionary for SmartChineseAnalyzer
Date Wed, 26 Aug 2009 14:57:59 GMT


Robert Muir commented on LUCENE-1817:

I am looking at this today. One thing about this code that should also be corrected ASAP is
that if you have a custom dictionary directory in .DCT format, the load() method will actually
call save()

This will create a corresponding .MEM file in the same directory after loading the dictionary
in DCT format.

I really do not think load() methods should be creating or writing to files.

> it is impossible to use a custom dictionary for SmartChineseAnalyzer
> --------------------------------------------------------------------
>                 Key: LUCENE-1817
>                 URL:
>             Project: Lucene - Java
>          Issue Type: Bug
>          Components: contrib/analyzers
>            Reporter: Robert Muir
>            Priority: Minor
> it is not possible to use a custom dictionary, even though there is a lot of code and
javadocs to allow this.
> This is because the custom dictionary is only loaded if it cannot load the built-in one
(which is of course, in the jar file and should load)
> {code}
> public synchronized static WordDictionary getInstance() {
>     if (singleInstance == null) {
>       singleInstance = new WordDictionary(); // load from jar file
>       try {
>         singleInstance.load();
>       } catch (IOException e) { // loading from jar file must fail before it checks the
AnalyzerProfile (where this can be configured)
>         String wordDictRoot = AnalyzerProfile.ANALYSIS_DATA_DIR;
>         singleInstance.load(wordDictRoot);
>       } catch (ClassNotFoundException e) {
>         throw new RuntimeException(e);
>       }
>     }
>     return singleInstance;
>   }
> {code}
> I think we should either correct this, document this, or disable custom dictionary support...

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