0
我想調用基於輸入參數返回計算值的My-SQL函數。我使用本機查詢來達到這個目的,我能夠獲得除計算字段以外的所有字段。我總是得到NULL作爲計算字段的值。此外,如果我在SQL Client中執行相同的查詢,它會給出正確的結果。試圖在休眠模式下使用SQL函數
的Test.class
@NamedNativeQueries({
@NamedNativeQuery(
name = "getTestData",
query = "Select test_id, BillType, Description, Material, Netvalue1, "
+ "NetValue(billType, Netvalue1) as Sales_Rs "
+ "from test1",
resultClass = Test.class
)
})
@Entity
@Table(name="TEST1")
public class Test {
private static final long serialVersionUID = 1L;
@Id
@GeneratedValue
@Column(name="TEST_ID")
private Integer test_id;
@Column(name="Billtype")
private String Billtype;
@Column(name="Description")
private String Description;
@Column(name="Material")
private String Material;
@Column(name="Netvalue1")
private Double Netvalue1;
@Transient
private Double Sales_Rs;
// getters and setters
.
.
.
};
這是我如何打電話本地查詢:
@SuppressWarnings("unchecked")
@Override
public List<Test> getAllTestData() throws MyAppException {
List<Test> result;
try {
Session session = sessionFactory.getCurrentSession();
Query query = session.getNamedQuery("getTestData");
result = query.list();
} catch (DataAccessException e) {
throw new MyAppException("Could not add a new record :", e);
}
return result;
}
這裏存儲功能:
CREATE FUNCTION NetValue(billType CHAR(30), Netvalue1 DOUBLE) RETURNS double
BEGIN
Declare RetValue DOUBLE;
SET RetValue =
CASE billType
WHEN 'A' THEN 0.10 * Netvalue1
WHEN 'B' THEN 0.05 * Netvalue1
WHEN 'C' THEN 0.025 * Netvalue1
ELSE Netvalue1
END;
RETURN RetValue;
END;
你是直接使用Hibernate,而不是通過JPA? – wero
我通過JPA使用hibernate。 –