Java 类org.apache.lucene.document.DocumentStoredFieldVisitor 实例源码

项目：spimedb 文件：Search.java

/**
 * return false if canceled via the predicate
 */
public boolean forEachLocalDoc(BiPredicate<Document, ScoreDoc> each) {
    if (localDocs == null)
        return true;

    final DocumentStoredFieldVisitor visitor = new DocumentStoredFieldVisitor();

    IndexReader reader = searcher.getIndexReader();
    Document d = visitor.getDocument();

    boolean result = true;
    for (ScoreDoc x : localDocs.scoreDocs) {
        d.clear();
        try {
            reader.document(x.doc, visitor);
            if (!each.test(d, x)) {
                result = false;
                break;
            }
        } catch (IOException e) {
            Search.logger.error("{}", e.getMessage());
        }
    }
    close();
    return result;
}

项目：basekb-search 文件：FreebaseSearcher.java

public String getSubjectPredicateValue(String subjectURI, String predName) throws IOException {
    // Return the value of predicate `predName' on `subjectURI'.  If there are muliple values,
    // return the first one indexed, if there are none, return null.
    // This is specialized to only retrieve the `predName' field of the subject document.
    // If the full document has already been retrieved, use the Document accessor instead.
    int subjectId = getSubjectDocID(subjectURI);
    if (subjectId < 0)
        return null;
    else {
        DocumentStoredFieldVisitor fieldVisitor = new DocumentStoredFieldVisitor(predName);
        getIndexReader().document(subjectId, fieldVisitor);
        Document subject = fieldVisitor.getDocument();
        return getSubjectPredicateValue(subject, predName);
    }
}

项目：basekb-search 文件：FreebaseSearcher.java

public String[] getSubjectPredicateValues(String subjectURI, String predName) throws IOException {
    // Return the values of predicate `predName' on `subjectURI'.
    // If there are none, return an empty array.
    // This is specialized to only retrieve the `predName' field of the subject document.
    // If the full document has already been retrieved, use the Document accessor instead.
    int subjectId = getSubjectDocID(subjectURI);
    if (subjectId < 0)
        return emptyValues;
    else {
        DocumentStoredFieldVisitor fieldVisitor = new DocumentStoredFieldVisitor(predName);
        getIndexReader().document(subjectId, fieldVisitor);
        Document subject = fieldVisitor.getDocument();
        return getSubjectPredicateValues(subject, predName);
    }
}

项目：search 文件：SearchTravRetLoadFieldSelectorTask.java

@Override
protected Document retrieveDoc(IndexReader ir, int id) throws IOException {
  if (fieldsToLoad == null) {
    return ir.document(id);
  } else {
    DocumentStoredFieldVisitor visitor = new DocumentStoredFieldVisitor(fieldsToLoad);
    ir.document(id, visitor);
    return visitor.getDocument();
  }
}

项目：search 文件：TestFieldsReader.java

public void test() throws IOException {
  assertTrue(dir != null);
  assertTrue(fieldInfos != null);
  IndexReader reader = DirectoryReader.open(dir);
  Document doc = reader.document(0);
  assertTrue(doc != null);
  assertTrue(doc.getField(DocHelper.TEXT_FIELD_1_KEY) != null);

  Field field = (Field) doc.getField(DocHelper.TEXT_FIELD_2_KEY);
  assertTrue(field != null);
  assertTrue(field.fieldType().storeTermVectors());

  assertFalse(field.fieldType().omitNorms());
  assertTrue(field.fieldType().indexOptions() == IndexOptions.DOCS_AND_FREQS_AND_POSITIONS);

  field = (Field) doc.getField(DocHelper.TEXT_FIELD_3_KEY);
  assertTrue(field != null);
  assertFalse(field.fieldType().storeTermVectors());
  assertTrue(field.fieldType().omitNorms());
  assertTrue(field.fieldType().indexOptions() == IndexOptions.DOCS_AND_FREQS_AND_POSITIONS);

  field = (Field) doc.getField(DocHelper.NO_TF_KEY);
  assertTrue(field != null);
  assertFalse(field.fieldType().storeTermVectors());
  assertFalse(field.fieldType().omitNorms());
  assertTrue(field.fieldType().indexOptions() == IndexOptions.DOCS_ONLY);

  DocumentStoredFieldVisitor visitor = new DocumentStoredFieldVisitor(DocHelper.TEXT_FIELD_3_KEY);
  reader.document(0, visitor);
  final List<IndexableField> fields = visitor.getDocument().getFields();
  assertEquals(1, fields.size());
  assertEquals(DocHelper.TEXT_FIELD_3_KEY, fields.get(0).name());
  reader.close();
}

项目：perecoder 文件：FilterDocumentServiceTemplate.java

/**
 * Выполняет поиск коллекции сущностей по подготовленному запросу
 *
 * @param referenceManager сервис поиска
 * @param query запрос поиска
 * @param sort сортировка
 * @param filter фильтр сущностей
 * @param offset смещение относительно начала объектов
 * @param count количество запрашиваемых объектов
 * @return Возвращает коллекцию сущностей, удовлетворящих критериям поиска
 */
private Collection<E> doQuery(
        final ReferenceManager<IndexSearcher> referenceManager,
        final Query query,
        final Sort sort,
        final Filter filter,
        final Integer offset,
        final Integer count) {
    try {
        return LuceneQueryUtil.query(binderTransformer, new LuceneQueryCallback() {
            @Override
            public ReferenceManager<IndexSearcher> getSearcherManager() {
                return referenceManager;
            }

            @Override
            public LuceneQueryDescriptor getQueryDescriptor() {
                return new LuceneQueryDescriptor(query, sort, filter, offset, count);
            }

            @Override
            public DocumentStoredFieldVisitor createStoredFieldVisitor() {
                return new DocumentStoredFieldVisitor();
            }
        });
    } catch (Throwable ex) {
        throw new RuntimeException(String.format("Can't execute query '%s' on '%s' index. Cause by: %s", query, retrieveTargetClassName(), ex.getMessage()), ex);
    }
}

项目：perecoder 文件：FieldService.java

@Override
public boolean isFieldsUnique(String metaFieldId) {
    // Проверяем, что поля существуют
    final LuceneCriteriaHolder criteria = criteriaBuilder.createCriteria(
            retrieveTargetClass(),
            createCriteriaByIDs(Field.META_FIELD_ID, metaFieldId).injectSort(Field.VALUE, SortOrder.ASCENDING)
    );
    final int totalCount = queryProvider.executeCountByCriteria(criteria);
    if (totalCount <= 0) {
        return true;
    }
    // Выполняем итерирование значений полей пока не дойдем до конца или не встретим дублирующегося значения
    UniqueFieldHandler uniqueFieldHandler = new UniqueFieldHandler();
    try {
        LuceneQueryUtil.query(
                binderTransformer,
                new LuceneQueryCallback() {
                    @Override
                    public ReferenceManager<IndexSearcher> getSearcherManager() {
                        return refreshSearcherManager(false);
                    }

                    @Override
                    public LuceneQueryDescriptor getQueryDescriptor() {
                        return new LuceneQueryDescriptor(criteria.buildQuery(), criteria.buildSort(), criteria.buildFilter(), 0, totalCount);
                    }

                    @Override
                    public DocumentStoredFieldVisitor createStoredFieldVisitor() {
                        return new DocumentStoredFieldVisitor();
                    }
                },
                uniqueFieldHandler
        );
        return uniqueFieldHandler.isUnique();
    } catch (IOException ex) {
        throw new RuntimeException(String.format("Can't find unique fields '%s' index. Cause by: %s", retrieveTargetClassName(), ex.getMessage()), ex);
    }
}

项目：NYBC 文件：SearchTravRetLoadFieldSelectorTask.java

@Override
protected Document retrieveDoc(IndexReader ir, int id) throws IOException {
  if (fieldsToLoad == null) {
    return ir.document(id);
  } else {
    DocumentStoredFieldVisitor visitor = new DocumentStoredFieldVisitor(fieldsToLoad);
    ir.document(id, visitor);
    return visitor.getDocument();
  }
}

项目：NYBC 文件：TestFieldsReader.java

public void test() throws IOException {
  assertTrue(dir != null);
  assertTrue(fieldInfos != null);
  IndexReader reader = DirectoryReader.open(dir);
  Document doc = reader.document(0);
  assertTrue(doc != null);
  assertTrue(doc.getField(DocHelper.TEXT_FIELD_1_KEY) != null);

  Field field = (Field) doc.getField(DocHelper.TEXT_FIELD_2_KEY);
  assertTrue(field != null);
  assertTrue(field.fieldType().storeTermVectors());

  assertFalse(field.fieldType().omitNorms());
  assertTrue(field.fieldType().indexOptions() == IndexOptions.DOCS_AND_FREQS_AND_POSITIONS);

  field = (Field) doc.getField(DocHelper.TEXT_FIELD_3_KEY);
  assertTrue(field != null);
  assertFalse(field.fieldType().storeTermVectors());
  assertTrue(field.fieldType().omitNorms());
  assertTrue(field.fieldType().indexOptions() == IndexOptions.DOCS_AND_FREQS_AND_POSITIONS);

  field = (Field) doc.getField(DocHelper.NO_TF_KEY);
  assertTrue(field != null);
  assertFalse(field.fieldType().storeTermVectors());
  assertFalse(field.fieldType().omitNorms());
  assertTrue(field.fieldType().indexOptions() == IndexOptions.DOCS_ONLY);

  DocumentStoredFieldVisitor visitor = new DocumentStoredFieldVisitor(DocHelper.TEXT_FIELD_3_KEY);
  reader.document(0, visitor);
  final List<IndexableField> fields = visitor.getDocument().getFields();
  assertEquals(1, fields.size());
  assertEquals(DocHelper.TEXT_FIELD_3_KEY, fields.get(0).name());
  reader.close();
}

项目：incubator-blur 文件：GenericRecordReader.java

private void fetchBlurRecord() throws IOException {
  DocumentStoredFieldVisitor visitor = new DocumentStoredFieldVisitor();
  _fieldsReader.visitDocument(_docId, visitor);
  BlurRecord blurRecord = new BlurRecord();
  String rowId = RowDocumentUtil.readRecord(visitor.getDocument(), blurRecord);
  blurRecord.setRowId(rowId);
  _rowId = new Text(rowId);
  _tableBlurRecord = new TableBlurRecord(_table, blurRecord);
}

项目：read-open-source-code 文件：SearchTravRetLoadFieldSelectorTask.java

@Override
protected Document retrieveDoc(IndexReader ir, int id) throws IOException {
  if (fieldsToLoad == null) {
    return ir.document(id);
  } else {
    DocumentStoredFieldVisitor visitor = new DocumentStoredFieldVisitor(fieldsToLoad);
    ir.document(id, visitor);
    return visitor.getDocument();
  }
}

项目：read-open-source-code 文件：SearchTravRetLoadFieldSelectorTask.java

@Override
protected Document retrieveDoc(IndexReader ir, int id) throws IOException {
  if (fieldsToLoad == null) {
    return ir.document(id);
  } else {
    DocumentStoredFieldVisitor visitor = new DocumentStoredFieldVisitor(fieldsToLoad);
    ir.document(id, visitor);
    return visitor.getDocument();
  }
}

项目：Maskana-Gestor-de-Conocimiento 文件：SearchTravRetLoadFieldSelectorTask.java

@Override
protected Document retrieveDoc(IndexReader ir, int id) throws IOException {
  if (fieldsToLoad == null) {
    return ir.document(id);
  } else {
    DocumentStoredFieldVisitor visitor = new DocumentStoredFieldVisitor(fieldsToLoad);
    ir.document(id, visitor);
    return visitor.getDocument();
  }
}

项目：Maskana-Gestor-de-Conocimiento 文件：TestFieldsReader.java

public void test() throws IOException {
  assertTrue(dir != null);
  assertTrue(fieldInfos != null);
  IndexReader reader = DirectoryReader.open(dir);
  Document doc = reader.document(0);
  assertTrue(doc != null);
  assertTrue(doc.getField(DocHelper.TEXT_FIELD_1_KEY) != null);

  Field field = (Field) doc.getField(DocHelper.TEXT_FIELD_2_KEY);
  assertTrue(field != null);
  assertTrue(field.fieldType().storeTermVectors());

  assertFalse(field.fieldType().omitNorms());
  assertTrue(field.fieldType().indexOptions() == IndexOptions.DOCS_AND_FREQS_AND_POSITIONS);

  field = (Field) doc.getField(DocHelper.TEXT_FIELD_3_KEY);
  assertTrue(field != null);
  assertFalse(field.fieldType().storeTermVectors());
  assertTrue(field.fieldType().omitNorms());
  assertTrue(field.fieldType().indexOptions() == IndexOptions.DOCS_AND_FREQS_AND_POSITIONS);

  field = (Field) doc.getField(DocHelper.NO_TF_KEY);
  assertTrue(field != null);
  assertFalse(field.fieldType().storeTermVectors());
  assertFalse(field.fieldType().omitNorms());
  assertTrue(field.fieldType().indexOptions() == IndexOptions.DOCS_ONLY);

  DocumentStoredFieldVisitor visitor = new DocumentStoredFieldVisitor(DocHelper.TEXT_FIELD_3_KEY);
  reader.document(0, visitor);
  final List<IndexableField> fields = visitor.getDocument().getFields();
  assertEquals(1, fields.size());
  assertEquals(DocHelper.TEXT_FIELD_3_KEY, fields.get(0).name());
  reader.close();
}

项目：lams 文件：IndexReader.java

/**
 * Like {@link #document(int)} but only loads the specified
 * fields.  Note that this is simply sugar for {@link
 * DocumentStoredFieldVisitor#DocumentStoredFieldVisitor(Set)}.
 */
public final Document document(int docID, Set<String> fieldsToLoad) throws IOException {
  final DocumentStoredFieldVisitor visitor = new DocumentStoredFieldVisitor(fieldsToLoad);
  document(docID, visitor);
  return visitor.getDocument();
}

项目：search 文件：IndexReader.java

/**
 * Like {@link #document(int)} but only loads the specified
 * fields.  Note that this is simply sugar for {@link
 * DocumentStoredFieldVisitor#DocumentStoredFieldVisitor(Set)}.
 */
public final Document document(int docID, Set<String> fieldsToLoad) throws IOException {
  final DocumentStoredFieldVisitor visitor = new DocumentStoredFieldVisitor(fieldsToLoad);
  document(docID, visitor);
  return visitor.getDocument();
}

项目：search 文件：TopGroupsResultTransformer.java

private Document retrieveDocument(final SchemaField uniqueField, int doc) throws IOException {
  DocumentStoredFieldVisitor visitor = new DocumentStoredFieldVisitor(uniqueField.getName());
  rb.req.getSearcher().doc(doc, visitor);
  return visitor.getDocument();
}

项目：NYBC 文件：IndexReader.java

/**
 * Like {@link #document(int)} but only loads the specified
 * fields.  Note that this is simply sugar for {@link
 * DocumentStoredFieldVisitor#DocumentStoredFieldVisitor(Set)}.
 */
public final Document document(int docID, Set<String> fieldsToLoad) throws IOException {
  final DocumentStoredFieldVisitor visitor = new DocumentStoredFieldVisitor(fieldsToLoad);
  document(docID, visitor);
  return visitor.getDocument();
}

项目：NYBC 文件：TopGroupsResultTransformer.java

private Document retrieveDocument(final SchemaField uniqueField, int doc) throws IOException {
  DocumentStoredFieldVisitor visitor = new DocumentStoredFieldVisitor(uniqueField.getName());
  rb.req.getSearcher().doc(doc, visitor);
  return visitor.getDocument();
}

项目：search-core 文件：TopGroupsResultTransformer.java

private Document retrieveDocument(final SchemaField uniqueField, int doc) throws IOException {
  DocumentStoredFieldVisitor visitor = new DocumentStoredFieldVisitor(uniqueField.getName());
  rb.req.getSearcher().doc(doc, visitor);
  return visitor.getDocument();
}

项目：read-open-source-code 文件：IndexReader.java

/**
 * Like {@link #document(int)} but only loads the specified
 * fields.  Note that this is simply sugar for {@link
 * DocumentStoredFieldVisitor#DocumentStoredFieldVisitor(Set)}.
 */
public final Document document(int docID, Set<String> fieldsToLoad) throws IOException {
  final DocumentStoredFieldVisitor visitor = new DocumentStoredFieldVisitor(fieldsToLoad);
  document(docID, visitor);
  return visitor.getDocument();
}

项目：read-open-source-code 文件：TopGroupsResultTransformer.java

private Document retrieveDocument(final SchemaField uniqueField, int doc) throws IOException {
  DocumentStoredFieldVisitor visitor = new DocumentStoredFieldVisitor(uniqueField.getName());
  rb.req.getSearcher().doc(doc, visitor);
  return visitor.getDocument();
}

项目：read-open-source-code 文件：IndexReader.java

/**
 * Like {@link #document(int)} but only loads the specified
 * fields.  Note that this is simply sugar for {@link
 * DocumentStoredFieldVisitor#DocumentStoredFieldVisitor(Set)}.
 */
public final Document document(int docID, Set<String> fieldsToLoad) throws IOException {
  final DocumentStoredFieldVisitor visitor = new DocumentStoredFieldVisitor(fieldsToLoad);
  document(docID, visitor);
  return visitor.getDocument();
}

项目：read-open-source-code 文件：IndexReader.java

/**
 * Like {@link #document(int)} but only loads the specified
 * fields.  Note that this is simply sugar for {@link
 * DocumentStoredFieldVisitor#DocumentStoredFieldVisitor(Set)}.
 */
public final Document document(int docID, Set<String> fieldsToLoad) throws IOException {
  final DocumentStoredFieldVisitor visitor = new DocumentStoredFieldVisitor(fieldsToLoad);
  document(docID, visitor);
  return visitor.getDocument();
}

项目：read-open-source-code 文件：TopGroupsResultTransformer.java

private Document retrieveDocument(final SchemaField uniqueField, int doc) throws IOException {
  DocumentStoredFieldVisitor visitor = new DocumentStoredFieldVisitor(uniqueField.getName());
  rb.req.getSearcher().doc(doc, visitor);
  return visitor.getDocument();
}

项目：Maskana-Gestor-de-Conocimiento 文件：IndexReader.java

/**
 * Like {@link #document(int)} but only loads the specified
 * fields.  Note that this is simply sugar for {@link
 * DocumentStoredFieldVisitor#DocumentStoredFieldVisitor(Set)}.
 */
public final Document document(int docID, Set<String> fieldsToLoad) throws IOException {
  final DocumentStoredFieldVisitor visitor = new DocumentStoredFieldVisitor(fieldsToLoad);
  document(docID, visitor);
  return visitor.getDocument();
}

项目：lams 文件：IndexReader.java

/**
 * Returns the stored fields of the <code>n</code><sup>th</sup>
 * <code>Document</code> in this index.  This is just
 * sugar for using {@link DocumentStoredFieldVisitor}.
 * <p>
 * <b>NOTE:</b> for performance reasons, this method does not check if the
 * requested document is deleted, and therefore asking for a deleted document
 * may yield unspecified results. Usually this is not required, however you
 * can test if the doc is deleted by checking the {@link
 * Bits} returned from {@link MultiFields#getLiveDocs}.
 *
 * <b>NOTE:</b> only the content of a field is returned,
 * if that field was stored during indexing.  Metadata
 * like boost, omitNorm, IndexOptions, tokenized, etc.,
 * are not preserved.
 * 
 * @throws IOException if there is a low-level IO error
 */
// TODO: we need a separate StoredField, so that the
// Document returned here contains that class not
// IndexableField
public final Document document(int docID) throws IOException {
  final DocumentStoredFieldVisitor visitor = new DocumentStoredFieldVisitor();
  document(docID, visitor);
  return visitor.getDocument();
}

项目：search 文件：IndexReader.java

/**
 * Returns the stored fields of the <code>n</code><sup>th</sup>
 * <code>Document</code> in this index.  This is just
 * sugar for using {@link DocumentStoredFieldVisitor}.
 * <p>
 * <b>NOTE:</b> for performance reasons, this method does not check if the
 * requested document is deleted, and therefore asking for a deleted document
 * may yield unspecified results. Usually this is not required, however you
 * can test if the doc is deleted by checking the {@link
 * Bits} returned from {@link MultiFields#getLiveDocs}.
 *
 * <b>NOTE:</b> only the content of a field is returned,
 * if that field was stored during indexing.  Metadata
 * like boost, omitNorm, IndexOptions, tokenized, etc.,
 * are not preserved.
 * 
 * @throws IOException if there is a low-level IO error
 */
// TODO: we need a separate StoredField, so that the
// Document returned here contains that class not
// IndexableField
public final Document document(int docID) throws IOException {
  final DocumentStoredFieldVisitor visitor = new DocumentStoredFieldVisitor();
  document(docID, visitor);
  return visitor.getDocument();
}

项目：NYBC 文件：IndexReader.java

/**
 * Returns the stored fields of the <code>n</code><sup>th</sup>
 * <code>Document</code> in this index.  This is just
 * sugar for using {@link DocumentStoredFieldVisitor}.
 * <p>
 * <b>NOTE:</b> for performance reasons, this method does not check if the
 * requested document is deleted, and therefore asking for a deleted document
 * may yield unspecified results. Usually this is not required, however you
 * can test if the doc is deleted by checking the {@link
 * Bits} returned from {@link MultiFields#getLiveDocs}.
 *
 * <b>NOTE:</b> only the content of a field is returned,
 * if that field was stored during indexing.  Metadata
 * like boost, omitNorm, IndexOptions, tokenized, etc.,
 * are not preserved.
 * 
 * @throws IOException if there is a low-level IO error
 */
// TODO: we need a separate StoredField, so that the
// Document returned here contains that class not
// IndexableField
public final Document document(int docID) throws IOException {
  final DocumentStoredFieldVisitor visitor = new DocumentStoredFieldVisitor();
  document(docID, visitor);
  return visitor.getDocument();
}

项目：read-open-source-code 文件：IndexReader.java

/**
 * Returns the stored fields of the <code>n</code><sup>th</sup>
 * <code>Document</code> in this index.  This is just
 * sugar for using {@link DocumentStoredFieldVisitor}.
 * <p>
 * <b>NOTE:</b> for performance reasons, this method does not check if the
 * requested document is deleted, and therefore asking for a deleted document
 * may yield unspecified results. Usually this is not required, however you
 * can test if the doc is deleted by checking the {@link
 * Bits} returned from {@link MultiFields#getLiveDocs}.
 *
 * <b>NOTE:</b> only the content of a field is returned,
 * if that field was stored during indexing.  Metadata
 * like boost, omitNorm, IndexOptions, tokenized, etc.,
 * are not preserved.
 * 
 * @throws IOException if there is a low-level IO error
 */
// TODO: we need a separate StoredField, so that the
// Document returned here contains that class not
// IndexableField
public final Document document(int docID) throws IOException {
  final DocumentStoredFieldVisitor visitor = new DocumentStoredFieldVisitor();
  document(docID, visitor);
  return visitor.getDocument();
}

项目：read-open-source-code 文件：IndexReader.java

/**
 * Returns the stored fields of the <code>n</code><sup>th</sup>
 * <code>Document</code> in this index.  This is just
 * sugar for using {@link DocumentStoredFieldVisitor}.
 * <p>
 * <b>NOTE:</b> for performance reasons, this method does not check if the
 * requested document is deleted, and therefore asking for a deleted document
 * may yield unspecified results. Usually this is not required, however you
 * can test if the doc is deleted by checking the {@link
 * Bits} returned from {@link MultiFields#getLiveDocs}.
 *
 * <b>NOTE:</b> only the content of a field is returned,
 * if that field was stored during indexing.  Metadata
 * like boost, omitNorm, IndexOptions, tokenized, etc.,
 * are not preserved.
 * 
 * @throws IOException if there is a low-level IO error
 */
// TODO: we need a separate StoredField, so that the
// Document returned here contains that class not
// IndexableField
public final Document document(int docID) throws IOException {
  final DocumentStoredFieldVisitor visitor = new DocumentStoredFieldVisitor();
  document(docID, visitor);
  return visitor.getDocument();
}

项目：read-open-source-code 文件：IndexReader.java

/**
 * Returns the stored fields of the <code>n</code><sup>th</sup>
 * <code>Document</code> in this index.  This is just
 * sugar for using {@link DocumentStoredFieldVisitor}.
 * <p>
 * <b>NOTE:</b> for performance reasons, this method does not check if the
 * requested document is deleted, and therefore asking for a deleted document
 * may yield unspecified results. Usually this is not required, however you
 * can test if the doc is deleted by checking the {@link
 * Bits} returned from {@link MultiFields#getLiveDocs}.
 *
 * <b>NOTE:</b> only the content of a field is returned,
 * if that field was stored during indexing.  Metadata
 * like boost, omitNorm, IndexOptions, tokenized, etc.,
 * are not preserved.
 * 
 * @throws IOException if there is a low-level IO error
 */
// TODO: we need a separate StoredField, so that the
// Document returned here contains that class not
// IndexableField
public final Document document(int docID) throws IOException {
  final DocumentStoredFieldVisitor visitor = new DocumentStoredFieldVisitor();
  document(docID, visitor);
  return visitor.getDocument();
}

项目：Maskana-Gestor-de-Conocimiento 文件：IndexReader.java

/**
 * Returns the stored fields of the <code>n</code><sup>th</sup>
 * <code>Document</code> in this index.  This is just
 * sugar for using {@link DocumentStoredFieldVisitor}.
 * <p>
 * <b>NOTE:</b> for performance reasons, this method does not check if the
 * requested document is deleted, and therefore asking for a deleted document
 * may yield unspecified results. Usually this is not required, however you
 * can test if the doc is deleted by checking the {@link
 * Bits} returned from {@link MultiFields#getLiveDocs}.
 *
 * <b>NOTE:</b> only the content of a field is returned,
 * if that field was stored during indexing.  Metadata
 * like boost, omitNorm, IndexOptions, tokenized, etc.,
 * are not preserved.
 * 
 * @throws IOException if there is a low-level IO error
 */
// TODO: we need a separate StoredField, so that the
// Document returned here contains that class not
// IndexableField
public final Document document(int docID) throws IOException {
  final DocumentStoredFieldVisitor visitor = new DocumentStoredFieldVisitor();
  document(docID, visitor);
  return visitor.getDocument();
}