/////////////////////////////////////////////////////
// 샘플 도큐먼트에 대한 인덱싱을 수행하는 함수.
private void createIndex() throws IOException, SAXException, TikaException {
indexer = new Indexer(indexDir);
int numIndexed;
long startTime = System.currentTimeMillis();
numIndexed = indexer.createIndex(dataDir, new TextFileFilter());
long endTime = System.currentTimeMillis();
indexer.close();
System.out.println(numIndexed + "File indexed, time taken: " + (endTime - startTime) + " ms");
}
