関口宏司のLuceneブログ

public final class TestFieldValueFilter {

  static final String INDEX = "index";
  static final String F_ID = "id";
  static final String F_VALUE = "value";
  static Analyzer analyzer = new WhitespaceAnalyzer(Version.LUCENE_36);
  static Directory dir;

  public static void main(String[] args) throws Exception {
    dir = FSDirectory.open(new File(INDEX));
    makeIndex();
    searchIndex(false);
    searchIndex(true);
  }

  static void makeIndex() throws IOException {
    IndexWriterConfig config = new IndexWriterConfig(Version.LUCENE_36, analyzer);
    IndexWriter writer = new IndexWriter(dir, config);
    writer.addDocument(doc("one", "value 1"));
    writer.addDocument(doc("zero"));
    writer.addDocument(doc("two", "value 1", "value 2"));
    writer.close();
  }
  
  static Document doc(String id, String... values){
    Document doc = new Document();
    doc.add(new Field(F_ID, id, Store.YES, Index.ANALYZED));
    if(values != null){
      for(String value : values){
        doc.add(new Field(F_VALUE, value, Store.YES, Index.ANALYZED));
      }
    }
    return doc;
  }
  
  static void searchIndex(boolean negate) throws IOException {
    System.out.println("¥n=== negate=" + negate);
    IndexReader reader = IndexReader.open(dir);
    IndexSearcher searcher = new IndexSearcher(reader);
    Filter filter = new FieldValueFilter(F_VALUE, negate);
    TopDocs docs = searcher.search(new MatchAllDocsQuery(), filter, 10);
    for(ScoreDoc scoreDoc : docs.scoreDocs){
      Document doc = searcher.doc(scoreDoc.doc);
      System.out.printf("¥tid=%s¥n", doc.get(F_ID));
    }
    searcher.close();
    reader.close();
  }
}

PhraseQuery query = new NGramPhraseQuery(2);
query.add("ファ");
query.add("ァイ");
query.add("イル");