hibernate 级联更新时 为什么只能更新一个表

hibernate 级联更新时 为什么只能更新一个表，而另外一个表是直接插入了数据。。并没有更新。谁知道是为什么



<?xml version="1.0" encoding="utf-8"?>

<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"

"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">

<!--

Mapping file autogenerated by MyEclipse Persistence Tools

-->

<hibernate-mapping>

<class name="com.accp.entity.VoteOption" table="VOTE_OPTION">

<id name="id" type="java.lang.Short">

<column name="VO_ID"/>

<generator class="sequence">

<param name="sequence">vote_seq</param>

</generator>

</id>

<property name="option" type="java.lang.String">

<column name="VO_OPTION" length="10" not-null="true"/>

</property>

<many-to-one name="subject" class="com.accp.entity.VoteSubject" lazy="false" cascade="all">

<column name="VS_ID"></column>

</many-to-one>

</class>

</hibernate-mapping>







<?xml version="1.0" encoding="utf-8"?>

<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"

"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">

<!--

Mapping file autogenerated by MyEclipse Persistence Tools

-->

<hibernate-mapping>

<class name="com.accp.entity.VoteSubject" table="VOTE_SUBJECT">

<id name="id" type="java.lang.Integer">

<column name="ID"/>

<generator class="sequence">

<param name="sequence">vote_seq</param>

</generator>

</id>

<property name="title" type="java.lang.String">

<column name="VS_TITLE" length="10" not-null="true"/>

</property>

<property name="type" type="java.lang.Short">

<column name="VS_TYPE" length="10" not-null="true"/>

</property>



<set name="option" table="VOTE_OPTION" cascade="all" inverse="true" lazy="false">

<key>

<column name="VS_ID"></column>

</key>

<one-to-many class="com.accp.entity.VoteOption"/>

</set>

</class>

</hibernate-mapping>





我这两个表是配置的双向关联 。。一对多 和 多对一 关联。也设置了级联 。



Hibernate: insert into VOTE_OPTION (VO_OPTION, VS_ID, VO_ID) values (?, ?, ?)

Hibernate: insert into VOTE_OPTION (VO_OPTION, VS_ID, VO_ID) values (?, ?, ?)

Hibernate: insert into VOTE_OPTION (VO_OPTION, VS_ID, VO_ID) values (?, ?, ?)

Hibernate: insert into VOTE_OPTION (VO_OPTION, VS_ID, VO_ID) values (?, ?, ?)

Hibernate: insert into VOTE_OPTION (VO_OPTION, VS_ID, VO_ID) values (?, ?, ?)

Hibernate: insert into VOTE_OPTION (VO_OPTION, VS_ID, VO_ID) values (?, ?, ?)

Hibernate: insert into VOTE_OPTION (VO_OPTION, VS_ID, VO_ID) values (?, ?, ?)

Hibernate: insert into VOTE_OPTION (VO_OPTION, VS_ID, VO_ID) values (?, ?, ?)

Hibernate: insert into VOTE_OPTION (VO_OPTION, VS_ID, VO_ID) values (?, ?, ?)

Hibernate: insert into VOTE_OPTION (VO_OPTION, VS_ID, VO_ID) values (?, ?, ?)

Hibernate: insert into VOTE_OPTION (VO_OPTION, VS_ID, VO_ID) values (?, ?, ?)

Hibernate: insert into VOTE_OPTION (VO_OPTION, VS_ID, VO_ID) values (?, ?, ?)

Hibernate: insert into VOTE_OPTION (VO_OPTION, VS_ID, VO_ID) values (?, ?, ?)

Hibernate: insert into VOTE_OPTION (VO_OPTION, VS_ID, VO_ID) values (?, ?, ?)

Hibernate: insert into VOTE_OPTION (VO_OPTION, VS_ID, VO_ID) values (?, ?, ?)

Hibernate: insert into VOTE_OPTION (VO_OPTION, VS_ID, VO_ID) values (?, ?, ?)

Hibernate: insert into VOTE_OPTION (VO_OPTION, VS_ID, VO_ID) values (?, ?, ?)

Hibernate: update VOTE_SUBJECT set VS_TITLE=?, VS_TYPE=? where ID=?



控制台 只 输出了一条 update语句

public String updateVoteSubject(){ //更新投票内容

int id = Integer.parseInt(ServletActionContext.

getRequest().getParameter("SubjectId"));

VoteSubject subject = new VoteSubject();

subject.setId(id);

subject.setTitle(this.subject.getTitle());

subject.setType(new Short(this.subject.getType()));

for(int i = 0; i<options.length; i++){

VoteOption option = new VoteOption();

option.setOption(options[i]);

option.setSubject(subject);

subject.getOption().add(option);

}



new VoteSubjectDaoImpl().voteUpdate(subject);

return "update";

}