This filter normalize use of the interchangeable Scandinavian characters æÆäÄöÖøØ and folded variants (aa, ao, ae, oe and oo) by transforming them to åÅæÆøØ.

It's a semantically less destructive solution than ScandinavianFoldingFilter, most useful when a person with a Norwegian or Danish keyboard queries a Swedish index and vice versa. This filter does not the common Swedish folds of å and ä to a nor ö to o.

blåbærsyltetøj == blåbärsyltetöj == blaabaarsyltetoej but not blabarsyltetoj räksmörgås == ræksmørgås == ræksmörgaos == raeksmoergaas but not raksmorgas

Inheritance: TokenFilter
ScandinavianNormalizationFilter Class Documentation
示例#1
0
            protected override TokenStreamComponents CreateComponents(string fieldName, TextReader reader)
            {
                Tokenizer   tokenizer = new MockTokenizer(reader, MockTokenizer.WHITESPACE, false);
                TokenStream stream    = new ScandinavianNormalizationFilter(tokenizer);

                return(new TokenStreamComponents(tokenizer, stream));
            }
示例#2
0
 public override TokenStreamComponents CreateComponents(string fieldName, TextReader reader)
 {
     Tokenizer tokenizer = new MockTokenizer(reader, MockTokenizer.WHITESPACE, false);
     TokenStream stream = new ScandinavianNormalizationFilter(tokenizer);
     return new TokenStreamComponents(tokenizer, stream);
 }