实体成员应该是原始数据类型还是java数据类型? [英] Entity members should they be primitive data types or java data types?

问题描述

将启用的变量声明为布尔值还是布尔值有区别吗?从内存占用的角度来看，这是更可取的.

Is there a difference in declaring the enabled variable as Boolean or boolean? Which is preferable from a memory footprint perspective.

@Entity
class User {

     @Column
     Boolean enabled;
}

推荐答案

它们都将映射到相同的列类型.从内存的角度来看，一个原语可能会更轻一些，但是几乎可以肯定的区别是可以忽略不计的.我认为原语会使它不可为空，但是您也可以使用批注来做到这一点.

They'll both map to the same column type. From a memory perspective, a primitive would probably be a little lighter, but the difference is almost certainly going to be negligible. I think a primitive would make it non-nullable, but you could also do that with an annotation.

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