如何使用包含在休眠中

Question

session = sessionFactory.openSession();   
Transaction tx = session.beginTransaction(); 
String hql ="from CustomObjectId where CONTAINS(fileName,fileName)"; 
Query query = session.createQuery(hql); 
query.setParameter("fileName", fileName); 
List file=query.list(); 
tx.commit(); 

如何搜索CONTAINS？

Answer 1

需要在子句中使用，如下圖所示：

session = sessionFactory.openSession();   
String hql =" from CustomObjectId c where c.fileName in :fileName"; 
Query query = session.createQuery(hql); 
query.setParameter("fileName", fileName); 
List file=query.list(); 

而且，你並不需要一個交易（明確）從數據庫只讀。所以，只需刪除Transaction tx = session.beginTransaction(); and tx.commit();行。

Answer 2

你可以用Hibernate Criteria來做到這一點。

String fileNames[] = {"fileName1", "fileName2"}; 
session = sessionFactory.openSession(); 
Criteria criteria = session.createCriteria(CustomObjectId.class); 
criteria.add(Restrictions.in("fileName ", fileNames)); 
List list = criteria.list();