Spring/Hibernate Select Count（*）Query Customizing？

Question

請幫我，

這是我的DAO，給了我正確的行數，但我想添加一些條件。

@Override 
public int getAllRows(SearchForm searchForm) { 
    logger.info("SearchForm Detail :: " + searchForm); 
    Session session = this.sessionFactory.getCurrentSession(); 
    Query query = (Query) session.createQuery(" select count(*) from EmployeeVO"); 
    int rows = ((Number) query.uniqueResult()).intValue(); 
    logger.info("Number of Rows :: " + rows); 
    return rows; 
} 

這是我的MySQL查詢：

選擇 FIRST_NAME

FROM 員工

WHERE FIRST_NAME LIKE '％AB％'

和 工資> 0，工資< 100000;

Answer 1

Query query = (Query) session.createQuery("SELECT first_name FROM employees WHERE first_name LIKE ? AND salary > ? and salary < ?"); 
query.setParameter(0, '%ab%'); 
query.setParameter(1, 0); 
query.setParameter(2, 100000); 

也可以使用命名參數也如下：

Query query = (Query) session.createQuery("SELECT first_name FROM employees WHERE first_name LIKE :first_name AND salary > :min_salary and salary < :max_salary"); 
query.setParameter(first_name, '%ab%'); 
query.setParameter(min_salary, 0); 
query.setParameter(max_salary, 100000); 

另一替換是使用Hibernate標準API：

Criteria criteria = session.createCriteria(Employee.class); 
criteria.add(Restrictions.eq("first_name", "%ab%")); 
criteria.add(Restrictions.lt("salary ", 0)); 
criteria.add(Restrictions.gt("salary ", 100000)); 
List list = criteria.list();