Reader aReader) {
if (matchVersion.onOrAfter(Version.LUCENE_31)) {
final Tokenizer source = new StandardTokenizer(matchVersion, aReader);
TokenStream result = new StandardFilter(matchVersion, source);
result = new LowerCaseFilter(matchVersion, result);
result = new StopFilter(matchVersion, result, stoptable);
if (!excltable.isEmpty())
result = new SetKeywordMarkerFilter(result, excltable);
if (stemdict != null)
result = new StemmerOverrideFilter(result, stemdict);
result = new SnowballFilter(result, new org.tartarus.snowball.ext.DutchStemmer());
return new TokenStreamComponents(source, result);
} else {
final Tokenizer source = new StandardTokenizer(matchVersion, aReader);
TokenStream result = new StandardFilter(matchVersion, source);
result = new StopFilter(matchVersion, result, stoptable);
if (!excltable.isEmpty())
result = new SetKeywordMarkerFilter(result, excltable);
result = new DutchStemFilter(result, origStemdict);
return new TokenStreamComponents(source, result);
}