如何在 Spring Data JPA 中保留 Generic 类中的某些字段？
我有一个实体类如下。我需要的是，我需要使用泛型，通过使用它，我需要传递一些扩展 SomeInfo 类的类，并在 SubClass 表中保留一个公共字段，并且在返回数据时我可以填充 T参数并轻松发送。但我无法直接扩展 SomeInfo 类，因为它包含我不需要在 SubClass 表中创建的字段，甚至我不需要使用继承单表解决方案。我尝试过使用 @AttributeOverride 但它引发了错误，我使用了 @Type 注释并且错误消失了，但字段 info_name 却没有t 创建。
@Entity
public class SubClass<T extends SomeInfo> extends ParentClass {
@Type(type = "com.package.SomeInfo")
@AttributeOverrides({
@AttributeOverride(name = "name", column = @Column(name = "info_name", nullable = false))
})
private T info;
}
@MappedSuperClass
public abstract class SomeInfo extends ParentClass {
// some fields
}
有办法实现我所需要的吗？提前致谢。
I have an entity class as follows. What I need is, I need to use generics, and by using it I need to pass some classes that extend the SomeInfo class and persist a common field inside the SubClass table and when returning data I can populate T parameter and send it easily. But I can't extend SomeInfo class directly because it contains fields that I don't need to be created in the SubClass table and even I don't need to use the Inheritance Single Table solution. I have tried using @AttributeOverride but it threw an error and I used @Type annotation and the error was gone, but the field info_name isn't created.
@Entity
public class SubClass<T extends SomeInfo> extends ParentClass {
@Type(type = "com.package.SomeInfo")
@AttributeOverrides({
@AttributeOverride(name = "name", column = @Column(name = "info_name", nullable = false))
})
private T info;
}
@MappedSuperClass
public abstract class SomeInfo extends ParentClass {
// some fields
}
Is there a way to achieve what I need? Thanks in advance.
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