hibernate如何从现有的数据库视图中检索数据？

我是新来的休眠。我的问题是我有一个Oracle数据库。我在数据库中有一个视图。现在我想用hibernate在该视图中检索数据。有没有可能的解决方案？hibernate如何从现有的数据库视图中检索数据？

非常感谢。

2011-01-13 nathan

下面的代码可以解决你的问题。

Database Query 

CREATE OR REPLACE VIEW cameron AS 
    SELECT last_name AS surname 
    FROM author 
    WHERE first_name = 'Cameron'; 

view entity 

@Entity 
@NamedNativeQuery(name = "findUniqueCameronsInOrder", query = "select * from cameron order by surname", resultClass = Cameron.class) 
public class Cameron implements java.io.Serializable { 

    private static final long serialVersionUID = 8765016103450361311L; 

    private String surname; 

    @Id 
    @Column(name = "SURNAME", nullable = false, length = 50) 
    public String getSurname() { 
     return surname; 
    } 

    public void setSurname(final String surname) { 
     this.surname = surname; 
    } 
} 

Hibernate mapping file. 

<mapping class="examples.hibernate.spring.query.domain.Cameron" /> 

finally some test !... 

@Test 
    public void findTheCameronsInTheView() throws Exception { 
     final List<Cameron> camerons = findUniqueCameronsInOrder(); 
     assertEquals(2, camerons.size()); 
     final Cameron judd = camerons.get(0); 
     final Cameron mcKenzie = camerons.get(1); 
     assertEquals("Judd", judd.getSurname()); 
     assertEquals("McKenzie", mcKenzie.getSurname()); 
    }

来源

2011-01-13 04:32:30

采取[这里]（http://timezra.blogspot.de/2009/05/mapping-hibernate-entities-to-views.html）（我想）没有归属 – avalancha 2014-08-27 12:40:39

一个视图是通过访问与表无关的数据，当您想添加，更新或从视图中删除时会出现问题。

请仔细阅读http://docs.jboss.org/hibernate/core/3.6/reference/en-US/html/querysql.html

来源

2011-01-13 14:07:47

这非常类似于普通的映射数据库表。创建实体并将您的视图名称用作表名。

@Entity 
@Table(name = "rc_latest_offer_details_view") 
public class OfferLatestDetailsViewEntity { 

@Id 
@Column(name = "FK_OFFER_ID") 
private int offerId; 

@Column(name = "MAX_CHANGED_DTM") 
@Type(type = "org.jadira.usertype.dateandtime.joda.PersistentDateTime") 
private DateTime changedDateTime; 

private BigDecimal price; 
... 
}

然后以与正常表相同的方式查询实体。工作在休眠4，春季4.

来源

2015-09-06 15:41:21 Gondy

hibernate如何从现有的数据库视图中检索数据？

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