Hi,
I'm having two classes Invoice and ItemLines.
The invoice class is:
Code:
public class Invoice extends BaseObject implements Serializable {
private Long id;
private Integer invoiceNumber;
private Customer customer;
private Date date;
private List itemLines = new ArrayList();
private double totalPrice;
The ItemLines class is:Code:
public class ItemLine extends BaseObject implements Serializable {
private Long id;
private Item item;
private double quantity;
private double unitPrice;
private double totalPrice;
private Invoice invoice;
The .hbm file for the invoice class is:Code:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD 2.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-2.0.dtd">
<hibernate-mapping
>
<class
name="com._4s_.invoice.model.Invoice"
table="invoice"
dynamic-update="false"
dynamic-insert="false"
select-before-update="false"
optimistic-lock="version"
>
<id
name="id"
column="id"
type="java.lang.Long"
unsaved-value="null"
>
<generator class="native">
<!--
To add non XDoclet generator parameters, create a file named
hibernate-generator-params-Invoice.xml
containing the additional parameters and place it in your merge dir.
-->
</generator>
</id>
<many-to-one
name="customer"
class="com._4s_.invoice.model.Customer"
cascade="none"
outer-join="false"
update="true"
insert="true"
access="property"
column="customer"
/>
<property
name="date"
type="java.util.Date"
update="true"
insert="true"
access="property"
column="invoicedate"
/>
<property
name="invoiceNumber"
type="java.lang.Integer"
update="true"
insert="true"
access="property"
column="invoicenumber"
unique="true"
/>
<list
name="itemLines"
table="itemline"
lazy="true"
inverse="true"
cascade="all-delete-orphan"
>
<key
column="invoice"
>
</key>
<index
column="position"
/>
<one-to-many
class="com._4s_.invoice.model.ItemLine"
/>
</list>
<property
name="totalPrice"
type="double"
update="true"
insert="true"
access="property"
column="totalprice"
/>
<!--
To add non XDoclet property mappings, create a file named
hibernate-properties-Invoice.xml
containing the additional properties and place it in your merge dir.
-->
</class>
</hibernate-mapping>
Code:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD 2.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-2.0.dtd">
<hibernate-mapping
>
<class
name="com._4s_.invoice.model.ItemLine"
table="itemline"
dynamic-update="false"
dynamic-insert="false"
select-before-update="false"
optimistic-lock="version"
>
<id
name="id"
column="id"
type="java.lang.Long"
unsaved-value="null"
>
<generator class="native">
<!--
To add non XDoclet generator parameters, create a file named
hibernate-generator-params-ItemLine.xml
containing the additional parameters and place it in your merge dir.
-->
</generator>
</id>
<many-to-one
name="invoice"
class="com._4s_.invoice.model.Invoice"
cascade="none"
outer-join="auto"
update="true"
insert="true"
access="property"
column="invoice"
/>
<many-to-one
name="item"
class="com._4s_.invoice.model.Item"
cascade="none"
outer-join="true"
update="true"
insert="true"
access="property"
column="item"
/>
<property
name="quantity"
type="double"
update="true"
insert="true"
access="property"
column="quantity"
/>
<property
name="unitPrice"
type="double"
update="true"
insert="true"
access="property"
column="unitprice"
/>
<property
name="totalPrice"
type="double"
update="true"
insert="true"
access="property"
column="totalprice"
/>
<property
name="position"
type="int"
update="true"
insert="true"
access="property"
column="position"
/>
<!--
To add non XDoclet property mappings, create a file named
hibernate-properties-ItemLine.xml
containing the additional properties and place it in your merge dir.
-->
</class>
</hibernate-mapping>
- When I create a new invoice instance and add a new itemLine to this invoice and then save the invoice , it works well.
- When I create a new invoice instance and add a new itemline to this invoice then I remove this itemline then save , it works well too.
-
But the problem is that: when I get an invoice instance that was previously saved and and add a new item line to this invoice then remove this itemLine and then save the invoice I get the following error:
object references an unsaved transient instance - save the transient instance before flushing: com._4s_.invoice.model.ItemLine
What I was expecting is that the invoice will be saved and the itemLine which I added and then removed will not be save to the invoice and will cause no problem.
I don't know why does this error occurs and how could I solve it.
Could anyone help me in that.
Thanks in advance.
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