inverse 使用
说明约定-如：
1.表属性 :T1oo->id,name
T2oo->id,avg,aid(
外键
),version
2.代码过程是：Save->t1oo对象(T1oo 外键 T2oo)
T1oo t1oo = new T1oo();
t1oo.setName("xx");
t1oo.setT2ooSet(new HashSet());
T2oo t2oo2 = new T2oo(24);
//t2oo2.setT1oo(t1oo); (在下面的本用例表中的第3属性 )
t1oo.getT2ooSet().add(t2oo2);
(在下面的本用例表中的第2属性 )
session.save(t1oo);
3.本例表使用：
T1oo.hbm.xml ->
<set name="t2ooSet" inverse="true" cascade = "all" >
(在下面的本用例表中的第1，2属性 )
<key column="aid"/>
<one-to-many class="T2oo"/>
</set>
T2oo.hbm.xml ->
<many-to-one name="t1oo" column="aid" class="T1oo" cascade="all" />
(在下面的本用例表中的第1，2属性 )
结合上面说明得表为：
+-------+-------+-------+----------+----------+
|hbn.xml|inverse|cascade|t1oo->t2oo|t2oo->t1oo|
+-------+-------+-------+----------+----------+
| t1oo | true | all | | |
+-------+-------+-------+ true | false |
| t2oo | | all | | |
+-------+-------+-------+----------+----------+
4.执行
Hibernate语句
：
Hibernate: insert into t1oo (name, id) values (?, ?)
Hibernate: insert into t2oo (version, avg, aid, id) values (?, ?, ?, ?)
5.结果为：
mysql> select * from t2oo;
+----+-----+------+---------+
| id | avg | aid | version |
+----+-----+------+---------+
| 2 | 24 | NULL | 0 | //主要就是看 aid属性
+----+-----+------+---------+
1 row in set (0.00 sec)
mysql> select * from t1oo; //
因为
T1oo总是可以 Save 下面就不再提了
+----+------+
| id | name |
+----+------+
| 2 | xx |
+----+------+
1 row in set (0.00 sec)
可改项：
+-------+-------+-------+----------+----------+
|hbn.xml|inverse|cascade|t1oo->t2oo|t2oo->t1oo|
+-------+-------+-------+----------+----------+
| t1oo | 可改4 | 可改2 | | |
+-------+-------+-------+ | 可改1 |
| t2oo | | 可改3 | | |
+-------+-------+-------+----------+----------+
主本:
+-------+-------+-------+----------+----------+
|hbn.xml|inverse|cascade|t1oo->t2oo|t2oo->t1oo|
+-------+-------+-------+----------+----------+
| t1oo | true | all | | |
+-------+-------+-------+ true | true |
| t2oo | | all | | |
+-------+-------+-------+----------+----------+
Hibernate: insert into t1oo (name, id) values (?, ?)
Hibernate: insert into t2oo (version, avg, aid, id) values (?, ?, ?, ?)
mysql> select * from t2oo;
+----+-----+------+---------+
| id | avg | aid | version |
+----+-----+------+---------+
| 1 | 24 | 1 | 0 |
+----+-----+------+---------+
1 row in set (0.00 sec)
改1
+-------+-------+-------+----------+----------+
|hbn.xml|inverse|cascade|t1oo->t2oo|t2oo->t1oo|
+-------+-------+-------+----------+----------+
| t1oo | true | all | | |
+-------+-------+-------+ true | false |
| t2oo | | all | | |
+-------+-------+-------+----------+----------+
Hibernate: insert into t1oo (name, id) values (?, ?)
Hibernate: insert into t2oo (version, avg, aid, id) values (?, ?, ?, ?)
mysql> select * from t2oo;
+----+-----+------+---------+
| id | avg | aid | version |
+----+-----+------+---------+
| 1 | 24 | NULL| 0 |
+----+-----+------+---------+
1 row in set (0.00 sec)
改2
+-------+-------+-------+----------+----------+
|hbn.xml|inverse|cascade|t1oo->t2oo|t2oo->t1oo|
+-------+-------+-------+----------+----------+
| t1oo | true | | | |
+-------+-------+-------+ true | true |
| t2oo | | all | | |
+-------+-------+-------+----------+----------+
Hibernate: insert into t1oo (name, id) values (?, ?)
Empty set (0.00 sec)
改2 改1
+-------+-------+-------+----------+----------+
|hbn.xml|inverse|cascade|t1oo->t2oo|t2oo->t1oo|
+-------+-------+-------+----------+----------+
| t1oo | true | | | |
+-------+-------+-------+ true | false |
| t2oo | | all | | |
+-------+-------+-------+----------+----------+
Hibernate: insert into t1oo (name, id) values (?, ?)
Empty set (0.00 sec)
改3
+-------+-------+-------+----------+----------+
|hbn.xml|inverse|cascade|t1oo->t2oo|t2oo->t1oo|
+-------+-------+-------+----------+----------+
| t1oo | true | all | | |
+-------+-------+-------+ true | true |
| t2oo | | | | |
+-------+-------+-------+----------+----------+
Hibernate: insert into t1oo (name, id) values (?, ?)
Hibernate: insert into t2oo (version, avg, aid, id) values (?, ?, ?, ?)
mysql> select * from t2oo;
+----+-----+------+---------+
| id | avg | aid | version |
+----+-----+------+---------+
| 1 | 24 | 1 | 0 |
+----+-----+------+---------+
1 row in set (0.00 sec)
改3 改2
+-------+-------+-------+----------+----------+
|hbn.xml|inverse|cascade|t1oo->t2oo|t2oo->t1oo|
+-------+-------+-------+----------+----------+
| t1oo | true | | | |
+-------+-------+-------+ true | true |
| t2oo | | | | |
+-------+-------+-------+----------+----------+
Hibernate: insert into t1oo (name, id) values (?, ?)
Empty set (0.00 sec)
改3 改1
+-------+-------+-------+----------+----------+
|hbn.xml|inverse|cascade|t1oo->t2oo|t2oo->t1oo|
+-------+-------+-------+----------+----------+
| t1oo | true | all | | |
+-------+-------+-------+ true | false |
| t2oo | | | | |
+-------+-------+-------+----------+----------+
Hibernate: insert into t1oo (name, id) values (?, ?)
Hibernate: insert into t2oo (version, avg, aid, id) values (?, ?, ?, ?)
mysql> select * from t2oo;
+----+-----+------+---------+
| id | avg | aid | version |
+----+-----+------+---------+
| 1 | 24 | NULL | 0 |
+----+-----+------+---------+
1 row in set (0.00 sec)
改3 改2 改1
+-------+-------+-------+----------+----------+
|hbn.xml|inverse|cascade|t1oo->t2oo|t2oo->t1oo|
+-------+-------+-------+----------+----------+
| t1oo | true | | | |
+-------+-------+-------+ true | false |
| t2oo | | | | |
+-------+-------+-------+----------+----------+
Hibernate: insert into t1oo (name, id) values (?, ?)
Empty set (0.00 sec)
改4
+-------+-------+-------+----------+----------+
|hbn.xml|inverse|cascade|t1oo->t2oo|t2oo->t1oo|
+-------+-------+-------+----------+----------+
| t1oo | false | all | | |
+-------+-------+-------+ true | true |
| t2oo | | all | | |
+-------+-------+-------+----------+----------+
Hibernate: insert into t1oo (name, id) values (?, ?)
Hibernate: insert into t2oo (version, avg, aid, id) values (?, ?, ?, ?)
Hibernate: update t2oo set aid=? where id=?
mysql> select * from t2oo;
+----+-----+------+---------+
| id | avg | aid | version |
+----+-----+------+---------+
| 1 | 24 | 1 | 0 |
+----+-----+------+---------+
1 row in set (0.02 sec)
改4 改1
+-------+-------+-------+----------+----------+
|hbn.xml|inverse|cascade|t1oo->t2oo|t2oo->t1oo|
+-------+-------+-------+----------+----------+
| t1oo | false | all | | |
+-------+-------+-------+ true | false |
| t2oo | | all | | |
+-------+-------+-------+----------+----------+
Hibernate: insert into t1oo (name, id) values (?, ?)
Hibernate: insert into t2oo (version, avg, aid, id) values (?, ?, ?, ?)
Hibernate: update t2oo set aid=? where id=?
mysql> select * from t2oo;
+----+-----+------+---------+
| id | avg | aid | version |
+----+-----+------+---------+
| 1 | 24 | 1 | 0 |
+----+-----+------+---------+
1 row in set (0.00 sec)
改4 改2
+-------+-------+-------+----------+----------+
|hbn.xml|inverse|cascade|t1oo->t2oo|t2oo->t1oo|
+-------+-------+-------+----------+----------+
| t1oo | false | | | |
+-------+-------+-------+ true | true |
| t2oo | | all | | |
+-------+-------+-------+----------+----------+
Hibernate: insert into t1oo (name, id) values (?, ?)
Hibernate: update t2oo set aid=? where id=?
Empty set (0.00 sec)
改4 改3
+-------+-------+-------+----------+----------+
|hbn.xml|inverse|cascade|t1oo->t2oo|t2oo->t1oo|
+-------+-------+-------+----------+----------+
| t1oo | false | all | | |
+-------+-------+-------+ true | true |
| t2oo | | | | |
+-------+-------+-------+----------+----------+
Hibernate: insert into t1oo (name, id) values (?, ?)
Hibernate: insert into t2oo (version, avg, aid, id) values (?, ?, ?, ?)
Hibernate: update t2oo set aid=? where id=?
mysql> select * from t2oo;
+----+-----+------+---------+
| id | avg | aid | version |
+----+-----+------+---------+
| 1 | 24 | 1 | 0 |
+----+-----+------+---------+
1 row in set (0.00 sec)
改4 改3 改2
+-------+-------+-------+----------+----------+
|hbn.xml|inverse|cascade|t1oo->t2oo|t2oo->t1oo|
+-------+-------+-------+----------+----------+
| t1oo | false | | | |
+-------+-------+-------+ true | true |
| t2oo | | | | |
+-------+-------+-------+----------+----------+
Hibernate: insert into t1oo (name, id) values (?, ?)
Hibernate: update t2oo set aid=? where id=?
Empty set (0.00 sec)
改4 改1 改2
+-------+-------+-------+----------+----------+
|hbn.xml|inverse|cascade|t1oo->t2oo|t2oo->t1oo|
+-------+-------+-------+----------+----------+
| t1oo | false | | | |
+-------+-------+-------+ true | false |
| t2oo | | all | | |
+-------+-------+-------+----------+----------+
Hibernate: insert into t1oo (name, id) values (?, ?)
Hibernate: update t2oo set aid=? where id=?
Empty set (0.00 sec)
改4 改1 改3
+-------+-------+-------+----------+----------+
|hbn.xml|inverse|cascade|t1oo->t2oo|t2oo->t1oo|
+-------+-------+-------+----------+----------+
| t1oo | false | all | | |
+-------+-------+-------+ true | false |
| t2oo | | | | |
+-------+-------+-------+----------+----------+
Hibernate: insert into t1oo (name, id) values (?, ?)
Hibernate: insert into t2oo (version, avg, aid, id) values (?, ?, ?, ?)
Hibernate: update t2oo set aid=? where id=?
mysql> select * from t2oo;
+----+-----+------+---------+
| id | avg | aid | version |
+----+-----+------+---------+
| 1 | 24 | 1 | 0 |
+----+-----+------+---------+
1 row in set (0.02 sec)
改4 改3 改2 改1
+-------+-------+-------+----------+----------+
|hbn.xml|inverse|cascade|t1oo->t2oo|t2oo->t1oo|
+-------+-------+-------+----------+----------+
| t1oo | false | | | |
+-------+-------+-------+ true | false |
| t2oo | | | | |
+-------+-------+-------+----------+----------+
Hibernate: insert into t1oo (name, id) values (?, ?)
Hibernate: update t2oo set aid=? where id=?
Empty set (0.00 sec)