判断主表里子表不能添加相同的字段

今天遇到一个开发任务，同一个公司添加的通过审核的证书不能重复，需要控制，主要分为添加，更新，添加需要多条添加判断，还有一条添加判断，更新也是这样，下面用代码介绍实现逻辑。

List<MdmCompanyCertificate> certInsertList = this.certificateWrap
.getInsertList();
List<MdmCompanyCertificate> certUpdateList = this.certificateWrap
.getUpdateList();
List<MdmCompanyCertificate> certDeleteList = this.certificateWrap
.getDeleteList();

for(int i=0;i<certInsertList.size();i++){
MdmCompanyCertificate insert=certInsertList.get(i);
for(int j=i+1;j<certInsertList.size();j++){
if((insert.getCertificateId().toString()).equals(certInsertList.get(j).getCertificateId().toString())){
responseData.setMessage("同一公司的使用证书不能重复！");//从添加list里判断
return;
}
}
QueryParamList params = new QueryParamList();
params.addParam("companyId", new BigDecimal(c.getCompanyId()));
params.addParam("certificateId", insert.getCertificateId());
params.addParam("status",1);

List<MdmCompanyCertificate> list=JPAUtil.load(MdmCompanyCertificate.class, params, null, null);
if(list.size()>0){
responseData.setMessage("同一公司的使用证书不能重复！");//一条数据从数据库进行判断
return;
}
}


for (int i = 0; i < certUpdateList.size(); i++) {
MdmCompanyCertificate update=certUpdateList.get(i);
for(int j=i+1;j<certUpdateList.size();j++){
if((update.getCertificateId().toString()).equals(certUpdateList.get(j).getCertificateId().toString())){
responseData.setMessage("同一公司的使用证书不能重复！");
return;
}
}
QueryParamList params = new QueryParamList();
params.addParam("companyId", new BigDecimal(c.getCompanyId()));
params.addParam("certificateId", update.getCertificateId());
params.addParam("status",1);
String sql="id<> "+update.getId();

List<MdmCompanyCertificate> list=JPAUtil.load(MdmCompanyCertificate.class, params,sql,null,null, null);
if(list.size()>0){
responseData.setMessage("同一公司的使用证书不能重复！");
return;
}


}

this.saveCertifcate(c.getCompanyId(), certInsertList,
certUpdateList, certDeleteList);
mdmCompanyListCertificateService.updateAll(c, certInsertList, certUpdateList,certDeleteList);
retrieveAll();
responseData.setAjaxDataWrap("dataWrap", dataWrap);
responseData.setMessage("保存成功");