Hello,

I get an java.lang.RuntimeException: net.sf.hibernate.MappingException
When I use this in my mapping. If I remove the set. the problem is gone, so the problem must be there.
Hbn version = 2.1


Thanks,
Steven

<?xml version="1.0" encoding="UTF-8"?>

<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD 1.1//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-1.1.dtd">

<hibernate-mapping
>
<class
name="eindwerk.stockbeheer.Artikel"
table="Artikel"
>

<id
name="id"
column="artikelId"
type="java.lang.Integer"
unsaved-value="null"
>
<generator class="native">
<!--
To add non XDoclet generator parameters, create a file named
hibernate-generator-params-Artikel.xml
containing the additional parameters and place it in your merge dir.
-->
</generator>
</id>

<property
name="minimumStock"
type="java.lang.Float"
column="minimumStock"
/>

<property
name="omschrijving"
type="java.lang.String"
column="omschrijving"
/>

<property
name="stockageEenheid"
type="java.lang.String"
column="stockageEenheid"
/>

<property
name="transportKosten"
type="java.lang.Float"
column="transportKosten"
/>

<property
name="verpakking"
type="java.lang.String"
column="verpakking"
/>

<property
name="artikelNr"
type="java.lang.Integer"
column="artikelNr"
/>

<!--
To add non XDoclet property mappings, create a file named
hibernate-properties-Artikel.xml
containing the additional properties and place it in your merge dir.
-->

<joined-subclass
name="eindwerk.stockbeheer.StockArtikel"
table="stockArtikel"
>
<key
column="artikelId"
/>
<property
name="geleverd"
type="boolean"
column="geleverd"
/>

<property
name="prijs"
type="java.lang.Float"
column="prijs"
/>

</joined-subclass>
<joined-subclass
name="eindwerk.stockbeheer.StandaardArtikel"
table="standaardArtikel"
>
<key
column="artikelId"
/>

<set
role="leveranciers"
table="standaardArtikelLeverancier"
lazy="false"

>

<key
column="artikelId"
>
</key>

<many-to-many
class="eindwerk.stockbeheer.Leverancier"
column="leveranciersId"

/>

</set>

</joined-subclass>

</class>

</hibernate-mapping>

Could you post a little more stacktrace please.

java.lang.RuntimeException: net.sf.hibernate.MappingException: Error reading resource: eindwerk/stockbeheer/Artikel.hbm.xml
at eindwerk.hibernate.HibernatePersistence.<init>(HibernatePersistence.java:33)
at eindwerk.hibernate.HibernatePersistence.getInstance(HibernatePersistence.java:39)
at eindwerk.hibernate.HibernateSession.currentSession(HibernateSession.java:39)
at eindwerk.stockbeheer.test.TestArtikel.testNieuwStockArtikelInDB(TestArtikel.java:74)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at junit.framework.TestCase.runTest(TestCase.java:154)
at junit.framework.TestCase.runBare(TestCase.java:127)
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:118)
at junit.framework.TestSuite.runTest(TestSuite.java:208)
at junit.framework.TestSuite.run(TestSuite.java:203)
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)
Caused by: net.sf.hibernate.MappingException: Error reading resource: eindwerk/stockbeheer/Artikel.hbm.xml
at net.sf.hibernate.cfg.Configuration.addClass(Configuration.java:358)
at eindwerk.hibernate.HibernatePersistence.<init>(HibernatePersistence.java:27)
... 18 more
Caused by: net.sf.hibernate.MappingException: java.lang.NullPointerException
at net.sf.hibernate.cfg.Configuration.addInputStream(Configuration.java:297)
at net.sf.hibernate.cfg.Configuration.addClass(Configuration.java:355)
... 19 more
Caused by: java.lang.NullPointerException
at net.sf.hibernate.util.StringHelper.qualify(StringHelper.java:241)
at net.sf.hibernate.cfg.Binder.bindCollection(Binder.java:509)
at net.sf.hibernate.cfg.Binder$2.create(Binder.java:1434)
at net.sf.hibernate.cfg.Binder.propertiesFromXML(Binder.java:1028)
at net.sf.hibernate.cfg.Binder.bindJoinedSubclass(Binder.java:216)
at net.sf.hibernate.cfg.Binder.handleJoinedSubclass(Binder.java:1087)
at net.sf.hibernate.cfg.Binder.propertiesFromXML(Binder.java:1058)
at net.sf.hibernate.cfg.Binder.bindRootClass(Binder.java:362)
at net.sf.hibernate.cfg.Binder.bindRoot(Binder.java:1256)
at net.sf.hibernate.cfg.Configuration.add(Configuration.java:253)
at net.sf.hibernate.cfg.Configuration.addInputStream(Configuration.java:289)
... 20 more

I am not sure as I am never used the xml-mapping stuff, but for me it looks like the "name" attribute is missing for the "set" element.

It doesn't look like tis is the problem. IS it posible to give an example? It does not have to bee with XML method.

Sure: http://www.hibernate.org/hib_docs/reference/en/html/collections.html#collections-ofvalues

From user-to-user: What I try to debug such things is to start the debugger - set a breakpoint at at net.sf.hibernate.util.StringHelper.qualify(StringHelper.java:241)
and try to traceback whats wrong.

Shouldnt be too hard ;-)

Is it posible to use a many to many inside a join-subclass?

You are trying to use a Hibernate 1.x mapping with Hibernate 2.1. That won't work.

Is is possible to show me where I kan find the 2.1 why? because I used the examples from the hibernate manual. And I do not know about another way.