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https://issues.apache.org/jira/browse/LUCENENET-428?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Vladimir updated LUCENENET-428:
-------------------------------
Issue Type: Wish (was: Task)
> How to do that the results are displayed in the first original tokens and
> them with synonyms?
> ---------------------------------------------------------------------------------------------
>
> Key: LUCENENET-428
> URL: https://issues.apache.org/jira/browse/LUCENENET-428
> Project: Lucene.Net
> Issue Type: Wish
> Components: Lucene.Net Core
> Affects Versions: Lucene.Net 2.9.4
> Environment: .net 4.0
> Reporter: Vladimir
>
> How to do that the results are displayed in the first original tokens and
> them with synonyms?
> My Analyzer(part) :
> public override TokenStream TokenStream(string fieldName, TextReader reader)
> {
> TokenStream result = new StandardTokenizer(reader);
> result = new LowerCaseFilter(result);
> result = new StopFilter(result, stoptable);
> result = new SynonymFilter(result, synonymEngine);
> result = new ExtendedRussianStemFilter(result, charset);
> return result;
> }
> My SynonymFilter :
> internal class SynonymFilter : TokenFilter
> {
> private readonly ISynonymEngine engine;
> private readonly Queue<Token> synonymTokenQueue
> = new Queue<Token>();
> public SynonymFilter(TokenStream tokenStream, ISynonymEngine engine)
> : base(tokenStream)
> {
> this.engine = engine;
> }
> public override Token Next()
> {
> if (synonymTokenQueue.Count > 0)
> {
> return synonymTokenQueue.Dequeue();
> }
>
> Token t = input.Next();
>
> if (t == null)
> return null;
> if (t.Type() == "<SYNONYM>")
> return t;
>
> IEnumerable<string> synonyms = engine.GetSynonyms(t.TermText());
>
> if (synonyms == null)
> {
> return t;
> }
>
> foreach (string syn in synonyms)
> {
> if (!t.TermText().Equals(syn))
> {
> var synToken = new Token(syn, t.StartOffset(),
> t.EndOffset(), "<SYNONYM>");
>
> synToken.SetPositionIncrement(0);
> synonymTokenQueue.Enqueue(synToken);
> }
> }
> return t;
> }
> }
> Thanks!
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