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Dec 15, 2009, 3:21 AM
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[jira] Created: (LUCENE-2165) SnowballAnalyzer lacks a constructor that takes a Set of Stop Words
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SnowballAnalyzer lacks a constructor that takes a Set of Stop Words
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Key: LUCENE-2165
URL: https://issues.apache.org/jira/browse/LUCENE-2165
Project: Lucene - Java
Issue Type: Bug
Components: contrib/analyzers
Affects Versions: 3.0, 2.9.1
Reporter: Nick Burch
Priority: Minor
As discussed on the java-user list, the SnowballAnalyzer has been updated to use a Set of stop words. However, there is no constructor which accepts a Set, there's only the original String[] one
This is an issue, because most of the common sources of stop words (eg StopAnalyzer) have deprecated their String[] stop word lists, and moved over to Sets (eg StopAnalyzer.ENGLISH_STOP_WORDS_SET). So, for now, you either have to use a deprecated field on StopAnalyzer, or manually turn the Set into an array so you can pass it to the SnowballAnalyzer
I would suggest that a constructor is added to SnowballAnalyzer which accepts a Set. Not sure if the old String[] one should be deprecated or not.
A sample patch against 2.9.1 to add the constructor is:
--- SnowballAnalyzer.java.orig 2009-12-15 11:14:08.000000000 +0000
+++ SnowballAnalyzer.java 2009-12-14 12:58:37.000000000 +0000
@@ -67,6 +67,12 @@
stopSet = StopFilter.makeStopSet(stopWords);
}
+ /** Builds the named analyzer with the given stop words. */
+ public SnowballAnalyzer(Version matchVersion, String name, Set stopWordsSet) {
+ this(matchVersion, name);
+ stopSet = stopWordsSet;
+ }
+
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