我有两个表，quote 和quotation_item。它们之间存在一对多的关系。我的要求是，当我这样做时quotation.setQuotationItem(set)，应该删除映射到引用的旧quotationItem，并且应该将 set 中的quotationItems 映射到引用。
/ * ** 我的报价 pojo 就像* ** * /
public class Quotation {
int quotationId;
String code;
String clientName;
Set<QuotationItem> quotationItem=new HashSet<QuotationItem>();
//getter and setter
}
/ * ** QuotationItem POJO * *** /
public class QuotationItem extends Quotation{
int id;
Quotation quotation;
String itemName;
int rate;
int qty;
//getter and setter
}
/ * * 报价单.hbm * ** * **** /
<hibernate-mapping>
<class name="com.paramatrix.pojo.Quotation" table="quotation" >
<id name="quotationId" type="int" column="quotation_id">
<generator class="native" />
</id>
<property name="code" column="code" type="string" />
<property name="clientName" column="client_name" type="string" />
<set name="quotationItem" table="quotation_item" cascade="save-update" inverse="true">
<key>
<column name="quotation_id" not-null="true" />
</key>
<one-to-many class="com.paramatrix.pojo.QuotationItem" />
</set>
</class>
</hibernate-mapping>
/ ** QuotationItem.hbm * ** * ** /
<class name="com.paramatrix.pojo.QuotationItem" table="quotation_item" dynamic-insert="true">
<id name="id" type="int" column="id">
<generator class="native" />
</id>
<many-to-one name="quotation" class="com.paramatrix.pojo.Quotation" >
<column name="quotation_id" not-null="true" />
</many-to-one>
<property name="itemName" column="item_name" type="string" />
<property name="rate" column="rate" type="int" />
<property name="qty" column="qty" type="int" />
</class>
我的表格结构就像报价单
quotation_id code client_name
我的 Quotation_item 表结构
id quotation_id item_name rate qty