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From "Digy (JIRA)" <j...@apache.org>
Subject [jira] Commented: (LUCENENET-121) StopFilter tries to access the i'th item of a hashtable as item[i] where i is not a key.
Date Sun, 29 Jun 2008 11:59:45 GMT

    [ https://issues.apache.org/jira/browse/LUCENENET-121?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12609103#action_12609103
] 

Digy commented on LUCENENET-121:
--------------------------------

Current stopword usage is like this:

	System.Collections.HashTable stopWordsSet = new System.Collections.Hashtable();
	stopWordsSet.Add("some","some");
	StopAnalyzer newStop = new StopAnalyzer(stopWordsSet); 	

but the "key" of Hashtable is not used anywhere and causes a dublicate typing of stop words(also
more memory). 
A more natural usage would be:

	System.Collections.ArrayList stopWordsSet = new System.Collections.ArrayList();
	stopWordsSet.Add("some");
	StopAnalyzer newStop = new StopAnalyzer(stopWordsSet);

I will attach another patch for this.

DIGY

> StopFilter  tries to access the i'th item of a hashtable as item[i] where i is not a
key.
> -----------------------------------------------------------------------------------------
>
>                 Key: LUCENENET-121
>                 URL: https://issues.apache.org/jira/browse/LUCENENET-121
>             Project: Lucene.Net
>          Issue Type: Bug
>         Environment: Lucene.Net 2.3.1
>            Reporter: Digy
>         Attachments: StopFilter v1.patch
>
>
> Constructor of StopFilter  tries to access the i'th item of a hashtable as item[i] where
i is not a key.
> {code}
>                 public StopFilter(TokenStream input, System.Collections.Hashtable stopWords,
bool ignoreCase) : base(input)
> 		{
> 			if (stopWords is CharArraySet)
> 			{
> 				this.stopWords = (CharArraySet) stopWords;
> 			}
> 			else
> 			{
> 				this.stopWords = new CharArraySet(stopWords.Count, ignoreCase);
> 				for (int i = 0; i < stopWords.Count; i++)
> 				{
> 					this.stopWords.Add(stopWords[i]); // <----- i is not a "key" it is index.
> 				}
> 			}
> 		}
> {code}

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