Hi,

I have a class class InvolvedParty and that has a FK to itself, so a self referencing link. Now when I try to add an involvedParty with or without a referencing other involvedParty, a not-null property references a null or transient value exception is thrown.

I have tried a lot of configuration setting but I am rather new at Hibernate so for now I'm out of ideas.

Thanks in advance


Hibernate version:
2.1.6 + XDoclet

Mapping documents:
<?xml version="1.0"?>

<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD 2.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-2.0.dtd">

<hibernate-mapping>
<class
name="domain.InvolvedParty"
table="involved_party"
dynamic-update="false"
dynamic-insert="false"
>

<id
name="id"
column="id"
type="long"
unsaved-value="-1"
>
<generator class="native">
</generator>
</id>

<property
name="relation"
type="java.lang.String"
update="true"
insert="true"
access="property"
column="relation"
/>

<bag
name="involvedPartyRelations"
lazy="false"
inverse="true"
cascade="all"
>

<key
column="RELATION_ID"
>
</key>

<one-to-many
class="domain.InvolvedParty"
/>
</bag>

<many-to-one
name="involvedPartyRelation"
class="domain.InvolvedParty"
cascade="none"
outer-join="auto"
update="true"
insert="true"
access="property"
column="ID"
not-null="true"
/>

</class>

</hibernate-mapping>

Code between sessionFactory.openSession() and session.close():

Full stack trace of any exception that occurs:
org.springframework.orm.hibernate.HibernateSystemException: not-null property references a null or transient value: domain.InvolvedParty.involvedPartyRelation; nested exception is net.sf.hibernate.PropertyValueException: not-null property references a null or transient value: domain.InvolvedParty.involvedPartyRelation
net.sf.hibernate.PropertyValueException: not-null property references a null or transient value: domain.InvolvedParty.involvedPartyRelation
at net.sf.hibernate.impl.SessionImpl.checkNullability(SessionImpl.java:1277)
at net.sf.hibernate.impl.SessionImpl.doSave(SessionImpl.java:928)
at net.sf.hibernate.impl.SessionImpl.doSave(SessionImpl.java:857)
at net.sf.hibernate.impl.SessionImpl.saveWithGeneratedIdentifier(SessionImpl.java:775)
at net.sf.hibernate.impl.SessionImpl.save(SessionImpl.java:738)
at net.sf.hibernate.impl.SessionImpl.saveOrUpdate(SessionImpl.java:1388)
at org.springframework.orm.hibernate.HibernateTemplate$13.doInHibernate(HibernateTemplate.java:315)
at org.springframework.orm.hibernate.HibernateTemplate.execute(HibernateTemplate.java:176)
at org.springframework.orm.hibernate.HibernateTemplate.saveOrUpdate(HibernateTemplate.java:312)
at .dao.hibernate.InvolvedPartyDAOImpl.create(InvolvedPartyDAOImpl.java:23)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.springframework.aop.framework.AopProxyUtils.invokeJoinpointUsingReflection(AopProxyUtils.java:61)
at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:151)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:120)
at org.springframework.orm.hibernate.HibernateInterceptor.invoke(HibernateInterceptor.java:99)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:140)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:153)
at $Proxy5.create(Unknown Source)
at dao.hibernate.InvolvedPartyDAOImplTest.testCrud(InvolvedPartyDAOImplTest.java:152)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at junit.framework.TestCase.runTest(TestCase.java:166)
at junit.framework.TestCase.runBare(TestCase.java:140)
at junit.framework.TestResult$1.protect(TestResult.java:106)
at junit.framework.TestResult.runProtected(TestResult.java:124)
at junit.framework.TestResult.run(TestResult.java:109)
at junit.framework.TestCase.run(TestCase.java:131)
at junit.framework.TestSuite.runTest(TestSuite.java:173)
at junit.framework.TestSuite.run(TestSuite.java:168)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:421)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:305)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:186)

Name and version of the database you are using:
Microsoft SQL Server 7 Standard Edition

JUnit test:
InvolvedParty involvedPartyA = new InvolvedPart();
//... setting data
involvedPartyA.addInvolvedPartyRelation(involvedPartyB);
Create the involved party
...

InvolvedParty class:
private InvolvedParty involvedPartyRelation;
private List involvedPartyRelations = new ArrayList();

public void setInvolvedPartyRelations(List involvedPartyRelations) {
this.involvedPartyRelations = involvedPartyRelations;
}

public void addInvolvedPartyRelation(InvolvedParty involvedParty) {
involvedPartyRelations.add(involvedParty);
involvedParty.setInvolvedPartyRelation(involvedParty);
}

public InvolvedParty getInvolvedPartyRelation() {
return involvedPartyRelation;
}

public void setInvolvedPartyRelation(InvolvedParty involvedParty) {
this.involvedPartyRelation = involvedParty;
}

InvolvedParty involvedPartyA = new InvolvedPart();
session.save(involvedPartyA);
involvedPartyA.addInvolvedPartyRelation(involvedPartyB);

Thanks for the help, but offcoarse I already tried that :) and with no success :( I still have the same exception.

I really have no idea what is causing this. What are the possible reasons such an exception is thrown?

Thanks in advance

Maarten

how do you get involvedPartyB?

I'm not sure what you lmean by get so here I go:
- InvolvedPartyB is also a newly created object like involvedPartyA, so with no ID.

My InvolvedParty class like like this:

...
/**
* Returns the involved parties to which this party has a relation
* @return The involved parties to which this party has a relation
* @hibernate.bag lazy="false" cascade="all" inverse="true"
* @hibernate.collection-key column="RELATION_ID"
* @hibernate.collection-one-to-many class="com.gudrun.gdp3000.business.involvedparty.domain.InvolvedParty"
*/
public List getInvolvedPartyRelations() {
return involvedPartyRelations;
}

/**
* Sets the involved parties to which this party has a relation
* @param involvedPartyRelations The involved parties to which this party has a relation
*/
public void setInvolvedPartyRelations(List involvedPartyRelations) {
this.involvedPartyRelations = involvedPartyRelations;
}

/**
*

Have you tried:
InvolvedParty involvedPartyA = new InvolvedPart();
InvolvedParty involvedPartyB = new InvolvedPart();
session.save(involvedPartyB );
involvedPartyA.addInvolvedPartyRelation(involvedPartyB);

Yep, tried it and got the same exception.

but he fails on the first save, so it wouldn't matter that it would be A or B that is saved first. So I just cannot save an InvolvedParty object with or without its self-reference :(

Thanks

in order to be sav"able", the id of your objects must be = -1 (see unsaved value), i think if you try to debug, you'll see before calling save that the id property is = to 0.
So you may change unsaved value to 0

My id's are initialized on -1, I am not sure what you mean by

How/where can or must I change the unsaved value?

Grtz

oh, take a look at this


set not-null=false no? and are you sure of the column name? it is the same as the class identifier ?

Well it seemed the mappig was indeed wrong, thx for the help. I found working with self-associations confusing :)

Grtz

Maarten