@SuppressWarnings("unchecked")
@Override
public List<Item> findItems(String searchString) {
List<Item> resultList = new ArrayList<Item>();
EntityManagerFactory factory = emf;
EntityManager em = factory.createEntityManager();
FullTextEntityManager fullTextEntityManager =
org.hibernate.search.jpa.Search.getFullTextEntityManager(em);
Session session = (Session) fullTextEntityManager.getDelegate();
FullTextSession fullTextSession = Search.getFullTextSession(session);
// MassIndexer massIndexer = fullTextSession.createIndexer();
// try {
// fullTextSession.createIndexer().start();
/* } catch (InterruptedException e) {
e.printStackTrace();
}*/
Transaction transaction = fullTextSession.beginTransaction();
fullTextSession.setFlushMode(FlushMode.MANUAL);
fullTextSession.setCacheMode(CacheMode.IGNORE);
ScrollableResults results =
fullTextSession.createCriteria(Item.class).setFetchSize(20).scroll(ScrollMode.FORWARD_ONLY);
int index = 0;
while (results.next()) {
index++;
fullTextSession.index(results.get(0)); // index each element
if (index % 20 == 0) {
fullTextSession.flushToIndexes(); // apply changes to indexes
fullTextSession.clear(); // free memory since the queue is processed
}
}
transaction.commit();
em.getTransaction().begin();
QueryBuilder qb =
fullTextEntityManager.getSearchFactory().buildQueryBuilder().forEntity(Item.class).get();
Query query =
qb.keyword()
.fuzzy()
.onFields("alias", "tagName")
.ignoreFieldBridge()
.matching(searchString)
.createQuery();
FullTextQuery ftq = fullTextEntityManager.createFullTextQuery(query, Item.class);
resultList = ftq.getResultList();
em.getTransaction().commit();
em.close();
return resultList;
}
private void reindex(Class<?> clazz) {
log.info("Re-indexing {0}", clazz);
ScrollableResults results = null;
try {
session.purgeAll(clazz);
// TODO try this, see how it affects reindexing time:
// session.flushToIndexes();
// session.getSearchFactory().optimize(clazz);
session.setFlushMode(FlushMode.MANUAL);
session.setCacheMode(CacheMode.IGNORE);
results =
session.createCriteria(clazz).setFetchSize(BATCH_SIZE).scroll(ScrollMode.FORWARD_ONLY);
int index = 0;
while (results.next()) {
objectProgress++;
index++;
session.index(results.get(0)); // index each element
if (index % BATCH_SIZE == 0) {
session.flushToIndexes(); // apply changes to indexes
session.clear(); // clear since the queue is processed
}
}
session.flushToIndexes(); // apply changes to indexes
// TODO try this too, see how it affects reindexing time:
// session.getSearchFactory().optimize(clazz);
session.clear(); // clear since the queue is processed
} catch (Exception e) {
log.warn("Unable to index objects of type {0}", e, clazz.getName());
hasError = true;
} finally {
if (results != null) results.close();
}
}
