/// <summary>
/// Creates a
/// <see cref="TokenStreamComponents"/>
/// which tokenizes all the text in the provided <see cref="TextReader"/>.
/// </summary>
/// <returns> A
/// <see cref="TokenStreamComponents"/>
/// built from an <see cref="StandardTokenizer"/> filtered with
/// <see cref="StandardFilter"/>, <see cref="IrishLowerCaseFilter"/>, <see cref="StopFilter"/>,
/// <see cref="SetKeywordMarkerFilter"/> if a stem exclusion set is
/// provided and <see cref="SnowballFilter"/>. </returns>
protected override TokenStreamComponents CreateComponents(string fieldName, TextReader reader)
{
Tokenizer source = new StandardTokenizer(m_matchVersion, reader);
TokenStream result = new StandardFilter(m_matchVersion, source);
StopFilter s = new StopFilter(m_matchVersion, result, HYPHENATIONS);
#pragma warning disable 612, 618
if (!m_matchVersion.OnOrAfter(LuceneVersion.LUCENE_44))
{
s.SetEnablePositionIncrements(false);
}
#pragma warning restore 612, 618
result = s;
result = new ElisionFilter(result, DEFAULT_ARTICLES);
result = new IrishLowerCaseFilter(result);
result = new StopFilter(m_matchVersion, result, m_stopwords);
if (stemExclusionSet.Count > 0)
{
result = new SetKeywordMarkerFilter(result, stemExclusionSet);
}
result = new SnowballFilter(result, new IrishStemmer());
return(new TokenStreamComponents(source, result));
}