net.sf.hibernate.PropertyValueException: not-null property

[pallav]

I am having a typical problem here
I have a Class A{a1, a2} and Class B{b1,a1,b2}
relation is one to many where one A and multiple B
A has an identity column "a1" which is used in B "a1" as foreign key.

Now if I insert a record in A it gives error for the B object's foreign key "a1" saying that it is
not-null property references a null or transient value
net.sf.hibernate.PropertyValueException: not-null property references a null or transient value: B.a1

There is one way of doing this, if I put a dummy value in B.a1 then it works, and then once i get the identity column value from A.a1 I can put that value into B.a1. But this is not a good approach. Will highly appreciate if you have a good solution for this.

Thanks in advance.

[irbouho]

This is a Hibernate issue and has nothing to do with Spring. Could you show your classes mapping and sample code for instances creation?

[pallav]

I am getting this error

nested exception is net.sf.hibernate.PropertyValueException: not-null property references a null or transient value: com.paymentvoucher.dataaccess.bean.VoucherPymntAud DataBean.voucherId

I have 2 databeans with 1 to many relation

VoucherHdrTempDataBean - voucherId(Primary key Identity)
PaymentAdvcTempDataBean - voucherId(Foreign key)

Now when I try to save the VoucherHdrTempDataBean the above error occurs, since voucherId is not known till that time

I am attaching the mapping file after removing unnecessary stuff from it.
<hibernate-mapping package="com.paymentvoucher.dataaccess.bean">
<class name="VoucherHdrTempDataBean" table="VO_VOUCH_HDR_TEMP">
<id name="voucherId" type="java.lang.Integer" column="VOUCHER_ID" unsaved-value="null">
<generator class="identity"/>
</id>
<set name="voucherPymntAudDataBeans" lazy="true" inverse="true" cascade="all" >
<key>
<column name="VOUCHER_ID" />
</key>
<one-to-many class="com.paymentvoucher.dataaccess.bean.VoucherP ymntAudDataBean"/>
</set>
</class>
</hibernate-mapping>

<hibernate-mapping package="com.paymentvoucher.dataaccess.bean">
<class name="PaymentAdvcTempDataBean" table="VO_PYMNT_ADVC_TEMP">
<id name="adviceId" type="java.lang.Integer" column="ADVICE_ID" unsaved-value="null">
<generator class="identity"/>
</id>
<many-to-one name="voucherHdrTempDataBean" class="com.paymentvoucher.dataaccess.bean.VoucherH drTempDataBean"
not-null="true" insert="false" update="false">
<column name="VOUCHER_ID" />
</many-to-one>
</class>
</hibernate-mapping>


I did filled both the beans with values. Then I am trying to save the master bean,
and fetching the identity value from master bean and filling it into detail bean and
saving the detail bean.