對于 Oracle 函數(shù)
實體類中定義的函數(shù)
@javax.persistence.NamedNativeQuery(name = "getFunc", query = "{? = call
my_function(:empName) }", resultClass = Employee.class, hints = {
@javax.persistence.QueryHint(name = "org.hibernate.callable", value = "true") })
對于 Oracle 存儲過程
創(chuàng)建過程與 sys_refcursor 為第一個 OUT 參數(shù)，如下所示
CREATE OR REPLACE procedure myProcedure(p_cursor out sys_refcursor,
p_val in varchar2
)
AS
BEGIN
OPEN o_cursor FOR
SELECT emp_name
FROM employees
WHERE LOWER (emp_name) LIKE lower(p_val||'%');
在實體類中定義的程序
@javax.persistence.NamedNativeQuery(name = "getProc", query = "{ call
my_procedure(?,:empName) }", resultClass = Employee.class, hints = {
@javax.persistence.QueryHint(name = "org.hibernate.callable", value = "true") })
和最后在 DAO 類中調(diào)用函數(shù)或過程作為
Query query = entityManager.createNamedQuery("getFunc"); // if procedure then getProc
query.setParameter("empName","smith");
query.getResultList();