本月博客排行
-
第1名
Xeden -
第2名
fantaxy025025 -
第3名
bosschen - paulwong
- johnsmith9th
年度博客排行
-
第1名
青否云后端云 -
第2名
宏天软件 -
第3名
gashero - gengyun12
- wy_19921005
- vipbooks
- e_e
- benladeng5225
- wallimn
- ranbuijj
- javashop
- jickcai
- fantaxy025025
- zw7534313
- qepwqnp
- robotmen
- 解宜然
- ssydxa219
- sam123456gz
- zysnba
- sichunli_030
- tanling8334
- arpenker
- gaojingsong
- xpenxpen
- kaizi1992
- wiseboyloves
- jh108020
- xyuma
- ganxueyun
- wangchen.ily
- xiangjie88
- Jameslyy
- luxurioust
- mengjichen
- lemonhandsome
- jbosscn
- nychen2000
- zxq_2017
- lzyfn123
- wjianwei666
- forestqqqq
- ajinn
- siemens800
- hanbaohong
- 狂盗一枝梅
- java-007
- zhanjia
- 喧嚣求静
- Xeden
最新文章列表
JoinColumn VS mappedBy
What is the difference between:
@Entity
public class Company {
@OneToMany(cascade = CascadeType.ALL , fetch = FetchType.LAZY)
@JoinColumn(name = "companyIdRef", referencedColu ...
@PrimaryKeyJoinColumn and mappedBy
1 ANNOTATIONS
1.1 @PrimaryKeyJoinColumn and mappedBy
1.1.1 Note
@PrimaryKeyJoinColumn is an annotation, while mappedBy is only an attribute of the @OneToOne, @OneToMany, @ManyToOne and @ManyToMany
1.1 ...
hibernate的注解属性mappedBy详解
mappedBy:
1>只有OneToOne,OneToMany,ManyToMany上才有mappedBy属性,ManyToOne不存在该属性;
2>mappedBy标签一定是定义在被拥有方的,他指向拥有方;
3>mappedBy的含义,应该理解为,拥有方能够自动维护跟被拥有方的关系,当然,如果从被拥有方,通过手工强行来维护拥有方的关系也是可以做到的;
4>mappedBy ...