现在有sub和fee两个对象，关系为一对多，在删除时，有时，只会删除一方数据，现在要求只删除多方；
首先看两者的关系为也可以参照文件
只删除多方/解决hibernate删除时的异常 deleted object would be re-saved by cascade (remove deleted object from associa -
在sub文件中有：
private List<AgreementFee> agreFee = new ArrayList<AgreementFee>(); @OneToMany(cascade
= CascadeType.ALL, fetch
= FetchType.LAZY,mappedBy
= "agreementSub")
public List
<AgreementFee
> getAgreFee() {
return agreFee; }
public void setAgreFee(List
<AgreementFee
> agreFee) {
this.agreFee
= agreFee; }
在fee文件中有：
如何解除关系，删除多方呢
/**
* 删除子列表下面的费用 * @author chensy * @date 2013-11-13 * @param subId */ public void delSubMes(String subId){
//获得子列表 AgreementSub agreementSub
= agreementSubDao.queryBySubId(subId);
//获得费用 List
<AgreementFee
> list
= agreementSub.getAgreFee(); List
<String
> ids
= new ArrayList
<String
>();
for (AgreementFee agreementFee
: list) { ids.add(agreementFee.getId()); }
if(ids
!=null
&& ids.size()
> 0){ agreementFeeDao.delFeeMes(ids); } }
fee
/**
* 删除费用 * @author chensy * @date 2013-11-14 * @param ids */ public void delFeeMes(List
<String
> ids){ session
= getSession(); AgreementFee agreementFee
= null;
for (String string
: ids) { agreementFee
= this.queryAgreementFee(string); agreementFee.getAgreementSub().getAgreFee().remove(agreementFee); agreementFee.setAgreementSub(null); } session.delete(agreementFee); }
来自为知笔记(Wiz)
转载于:https://www.cnblogs.com/babyhhcsy/p/3434652.html
