有什么区别:
@Entity
public class Company {
@OneToMany(cascade = CascadeType.ALL , fetch = FetchType.LAZY)
@JoinColumn(name = "companyIdRef", referencedColumnName = "companyId")
private List<Branch> branches;
...
}
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和
@Entity
public class Company {
@OneToMany(cascade = CascadeType.ALL , fetch = FetchType.LAZY, mappedBy = "companyIdRef")
private List<Branch> branches;
...
}
Run Code Online (Sandbox Code Playgroud) 我是这个hibernate注释的新手.我想将此xml映射转换为注释:
<map name="Text" table="JAV_TEXT" inverse="true" cascade="all-delete-orphan">
<key column="FK_GUID"/>
<map-key column="TEXT_GUID" type="string"/>
<one-to-many class="com.TextPO"/>
</map>
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这就是我所做的:
@OneToMany(fetch = FetchType.LAZY, targetEntity=com.TextPO.class)
@Cascade({CascadeType.DELETE_ORPHAN})
@JoinColumn(name="FK_GUID")
@MapKey(name="TEXT_GUID")
private Map<String, PersistentObject> text = new HashMap<String, PersistentObject>();
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但是CascadeType.DELETE_ORPHAN已被弃用,那么我如何all-delete-orphan通过注释来表示?我正在使用hibernate 4.1.4.
annotations hibernate hibernate-mapping hibernate-annotations all-delete-orphan
有人可以解释在xml映射文件中使用inverse,我正在阅读教程但是没有理解它在映射文件中的使用?
谢谢
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