没有新类的Hibernate Compsite Key [英] Hibernate Compsite Key without new class
问题描述
我有简单的hibernate mapping
< class name =com.domain.OtherAccounttable =ACCOUNT> ;
< composite-id>
< / composite-id>
< property name =accholder>< / property>
< / class>
我不想为复合键创建单独的类。所以,acctype和accnum只是OtherAccount类的一部分。类实现可序列化的接口和hashCode()和equals()方法。
我可以创建新对象并使用session.save()持久保存它。
但是我如何检索现有对象?在session.get()方法中如何指定组合键?
在session.get(OtherAccount.class,如何指定组合KEY HERE)
创建一个 OtherAccount
并设置这两个字段。 Hibernate并不在乎实例的字段多于需要。
I have simple hibernate mapping
<class name="com.domain.OtherAccount" table="ACCOUNT">
<composite-id >
<key-property name="acctype" column="acctype" type="java.lang.Character"></key-property>
<key-property name="accnum" column="accnum" type="java.lang.Integer"></key-property>
</composite-id>
<property name="accholder"></property>
</class>
I do not want to create separate class for Composite Key. So, acctype and accnum are part of OtherAccount class only. Class implements serializable interface and hashCode() and equals() methods.
I am able to create new object and persist it using, session.save(). But how can I retrieve existing object ? In session.get() method how to specify composite key ?
In session.get(OtherAccount.class, HOW TO SPECIFY COMPOSITE KEY HERE )
Create an instance of OtherAccount
and set just those two fields. Hibernate doesn't care that the instance has more fields than it needs.
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