Win a copy of Head First Android this week in the Android forum!
  • Post Reply Bookmark Topic Watch Topic
  • New Topic
programming forums Java Mobile Certification Databases Caching Books Engineering Micro Controllers OS Languages Paradigms IDEs Build Tools Frameworks Application Servers Open Source This Site Careers Other Pie Elite all forums
this forum made possible by our volunteer staff, including ...
Marshals:
  • Campbell Ritchie
  • Paul Clapham
  • Ron McLeod
  • Tim Cooke
  • Junilu Lacar
Sheriffs:
  • Rob Spoor
  • Devaka Cooray
  • Jeanne Boyarsky
Saloon Keepers:
  • Jesse Silverman
  • Stephan van Hulst
  • Tim Moores
  • Carey Brown
  • Tim Holloway
Bartenders:
  • Jj Roberts
  • Al Hobbs
  • Piet Souris

One-to-many mapping and composite key

 
Greenhorn
Posts: 2
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
I have some issue with the One-to-many mapping and composite key.

I have a table PropT - Parent

column prop_nbr (PK)

Table PropRoleUserT - Child

Composite PK ( prop_nbr , role_nm)

This has a FK for prop_nbr with PropT.prop_nbr

In both the table prop_nbr is not null.

The issue is when I update a data in both parent and child , it is updating the parent , but it is also updating the child for prop_nbr as null and getting the Not null exception. I am not sure why is it updating the prop_nbr in PropRoleUserT to null when I am sending the data.

I want an immediate help.

I am using the XML mapping from Hibernate 3.0 and not POJO.

Here are my mappings :

PROPT
----------

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">

<hibernate-mapping>
<class entity-name="PropT" table="PROP_T" schema="SYSTEM">
<id name="propNbr" type="long" column="PROP_NBR" length="19">
<generator class="sequence">
<param name="sequence">PROP_T_SEQ</param>
</generator>
</id>
<property name="bpmProcessId" type="string"
column="BPM_PROCESS_ID" length="100" />
<property name="dueDt" type="date" column="DUE_DT" length="7" />
<property name="prodDescr" type="string" column="PROD_DESCR"
length="255" />
<property name="propDescr" type="string" column="PROP_DESCR"
length="255" />
<property name="recipientNm" type="string" column="RECIPIENT_NM"
length="100" />
<property name="recvdDt" type="date" column="RECVD_DT"
length="7" />
<property name="senderNm" type="string" column="SENDER_NM"
length="255" />

<!-- Associations -->
<!-- bi-directional many-to-one association to PropNotificationT -->
<set name="propNotificationTs" inverse="false" lazy="true">
<key>
<column name="PROP_NBR" /><!-- a foreign key in PROP_NOTIFICATION_T referencing the primary key of this table. -->
</key>
<one-to-many entity-name="PropNotificationT" />
</set>
<!-- bi-directional many-to-one association to PropRoleUserT -->
<set name="propRoleUserTs" inverse="false" lazy="true">
<key>
<column name="PROP_NBR" /><!-- a foreign key in PROP_ROLE_USER_T referencing the primary key of this table. -->
</key>
<one-to-many entity-name="PropRoleUserT" />
</set>
<!-- bi-directional many-to-one association to StatTypT -->
<many-to-one name="statTypT" class="StatTypT" lazy="proxy">
<column name="STAT_TYP_NBR" not-null="true" length="22" />
</many-to-one>

</class>
<query name="get.proposal.data.by.proposalId">
<![CDATA[
from PropT as prop where prop.propNbr = roposal_id]]>
</query>
</hibernate-mapping>

PropRoleUserT
-------------------------


<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">

<hibernate-mapping>
<class
entity-name="PropRoleUserT"
table="PROP_ROLE_USER_T"
schema="SYSTEM"
>
<composite-id>
<key-property
name="activeDirNm"
type="string"
column="ACTIVE_DIR_NM"
length="30"
/>
<key-property
name="propNbr"
type="integer"
column="PROP_NBR"
length="7"
/>
<key-property
name="roleNm"
type="string"
column="ROLE_NM"
length="50"
/>
</composite-id>

<!-- Associations -->
<!-- bi-directional many-to-one association to PropT -->
<!-- many-to-one
name="propT"
class="PropT"
update="false"
insert="false"
lazy="proxy"
>
<column name="PROP_NBR" not-null="true" length="7"/>
</many-to-one //-->

</class>
</hibernate-mapping>
 
Consider Paul's rocket mass heater.
reply
    Bookmark Topic Watch Topic
  • New Topic