Examples of org.apache.lucene.document.StringField

org.apache.lucene.document.StringField
A field that is indexed but not tokenized: the entire String value is indexed as a single token. For example this might be used for a 'country' field or an 'id' field, or any field that you intend to use for sorting or access through the field cache.

    Directory dir = newDirectory();
    IndexWriterConfig conf = newIndexWriterConfig(TEST_VERSION_CURRENT, new MockAnalyzer(random()));
    IndexWriter writer = new IndexWriter(dir, conf);
    
    Document doc = new Document();
    doc.add(new StringField("id", "d0", Store.NO));
    doc.add(new NumericDocValuesField("f", 1L));
    writer.addDocument(doc);


    // create first gen of update files
    writer.updateNumericDocValue(new Term("id", "d0"), "f", 2L);

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    // build a large index with many NDV fields and update terms
    for (int i = 0; i < numDocs; i++) {
      Document doc = new Document();
      int numUpdateTerms = _TestUtil.nextInt(random, 1, numTerms / 10);
      for (int j = 0; j < numUpdateTerms; j++) {
        doc.add(new StringField("upd", RandomPicks.randomFrom(random, updateTerms), Store.NO));
      }
      for (int j = 0; j < numNumericFields; j++) {
        long val = random.nextInt();
        doc.add(new NumericDocValuesField("f" + j, val));
        doc.add(new NumericDocValuesField("cf" + j, val * 2));

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    Directory dir = newDirectory();
    IndexWriterConfig conf = newIndexWriterConfig(TEST_VERSION_CURRENT, new MockAnalyzer(random()));
    IndexWriter writer = new IndexWriter(dir, conf);
    
    Document doc = new Document();
    doc.add(new StringField("upd", "t1", Store.NO));
    doc.add(new StringField("upd", "t2", Store.NO));
    doc.add(new NumericDocValuesField("f1", 1L));
    doc.add(new NumericDocValuesField("f2", 1L));
    writer.addDocument(doc);
    writer.updateNumericDocValue(new Term("upd", "t1"), "f1", 2L); // update f1 to 2
    writer.updateNumericDocValue(new Term("upd", "t1"), "f2", 2L); // update f2 to 2

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    Directory dir = newDirectory();
    IndexWriterConfig conf = newIndexWriterConfig(TEST_VERSION_CURRENT, new MockAnalyzer(random()));
    IndexWriter writer = new IndexWriter(dir, conf);
    
    Document doc = new Document();
    doc.add(new StringField("id", "doc", Store.NO));
    doc.add(new NumericDocValuesField("f1", 1L));
    writer.addDocument(doc);
    writer.addDocument(doc);
    writer.commit();
    writer.deleteDocuments(new Term("id", "doc")); // delete all docs in the first segment

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    Directory dir = newDirectory();
    IndexWriterConfig conf = newIndexWriterConfig(TEST_VERSION_CURRENT, new MockAnalyzer(random()));
    IndexWriter writer = new IndexWriter(dir, conf);
    
    Document doc = new Document();
    doc.add(new StringField("id", "doc", Store.NO));
    doc.add(new NumericDocValuesField("f1", 1L));
    writer.addDocument(doc);
    // update w/ multiple nonexisting terms in same field
    writer.updateNumericDocValue(new Term("c", "foo"), "f1", 2L);
    writer.updateNumericDocValue(new Term("c", "bar"), "f1", 2L);

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  private void addDoc(IndexWriter writer, int id) throws IOException
  {
    Document doc = new Document();
    doc.add(new TextField("content", "aaa", Field.Store.NO));
    doc.add(new StringField("id", Integer.toString(id), Field.Store.YES));
    FieldType customType2 = new FieldType(TextField.TYPE_STORED);
    customType2.setStoreTermVectors(true);
    customType2.setStoreTermVectorPositions(true);
    customType2.setStoreTermVectorOffsets(true);
    doc.add(new Field("autf8", "Lu\uD834\uDD1Ece\uD834\uDD60ne \u0000 \u2620 ab\ud917\udc17cd", customType2));

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        // Initialize the map with the default fields.
        fields.put(BODY_FIELD, new Field(BODY_FIELD, "", bodyFt));
        fields.put(TITLE_FIELD, new Field(TITLE_FIELD, "", ft));
        fields.put(DATE_FIELD, new Field(DATE_FIELD, "", ft));
        fields.put(ID_FIELD, new StringField(ID_FIELD, "", Field.Store.YES));
        fields.put(NAME_FIELD, new Field(NAME_FIELD, "", ft));


        numericFields.put(DATE_MSEC_FIELD, new LongField(DATE_MSEC_FIELD, 0L, Field.Store.NO));
        numericFields.put(TIME_SEC_FIELD, new IntField(TIME_SEC_FIELD, 0, Field.Store.NO));

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  public void setUp() throws Exception {
    super.setUp();
    dir = newDirectory();
    iw = new RandomIndexWriter(random(), dir);
    Document doc = new Document();
    Field idField = new StringField("id", "", Field.Store.NO);
    doc.add(idField);
    // add 500 docs with id 0..499
    for (int i = 0; i < 500; i++) {
      idField.setStringValue(Integer.toString(i));
      iw.addDocument(doc);
    }
    // delete 20 of them
    for (int i = 0; i < 20; i++) {
      iw.deleteDocuments(new Term("id", Integer.toString(random().nextInt(iw.maxDoc()))));

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  private static void addSome(Document doc, String values[]) {
    List<String> list = Arrays.asList(values);
    Collections.shuffle(list, random());
    int howMany = _TestUtil.nextInt(random(), 1, list.size());
    for (int i = 0; i < howMany; i++) {
      doc.add(new StringField("field", list.get(i), Field.Store.NO));
      doc.add(new SortedSetDocValuesField("dv", new BytesRef(list.get(i))));
    }
  }

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    final Field date;


    public DocState(boolean useDocValues) {
      doc = new Document();
      
      title = new StringField("title", "", Field.Store.NO);
      doc.add(title);


      FieldType ft = new FieldType(TextField.TYPE_STORED);
      ft.setStoreTermVectors(true);
      ft.setStoreTermVectorOffsets(true);
      ft.setStoreTermVectorPositions(true);
      
      titleTokenized = new Field("titleTokenized", "", ft);
      doc.add(titleTokenized);


      body = new Field("body", "", ft);
      doc.add(body);


      id = new StringField("docid", "", Field.Store.YES);
      doc.add(id);


      date = new StringField("date", "", Field.Store.YES);
      doc.add(date);


      if (useDocValues) {
        titleDV = new SortedDocValuesField("titleDV", new BytesRef());
        doc.add(titleDV);

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