I have two tables, quotation and quotation_item. There is one to many relationship them. My requirement is when I do quotation.setQuotationItem(set)
, old quotationItem mapped to quotation should get removed and quotationItems in set should get mapped against quotation.
/*** My Quotation pojo is like ****/
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
}
/** Quotation.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>
My tables structure is like for Quotation
quotation_id
code
client_name
My table structure for Quotation_item
id
quotation_id
item_name
rate
qty
Try to modify the set rather than replace it. i.e.:
quotation.getQuotationItem().clear();
quotation.getQuotationItem().addAll(newSet);
This is due to some hibernate weirdness.
Aside, a small point about naming. Your Quotation.quotationItem
should be named quotationItems
as it contains more than one QuotationItem
.