<?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 package="im.myp.domain.pkm.user.support">
   <class name="UsedWord" table="USED_WORD">
      <meta attribute="generated-class">im.myp.domain.pkm.user.support.AUsedWord</meta>
      <meta attribute="scope-class">public abstract</meta>
      <id name="id" type="int" column="USED_WORD_ID">
         <generator class="identity"></generator>
      </id>
      <property name="word" type="string">
         <column name="WORD" length="30" unique="true" not-null="true" />
      </property>
      ...
      <set name="objects" inverse="true" cascade="all-delete-orphan" >
         <key column="USED_WORD_ID" />
         <one-to-many class="im.myp.domain.pkm.user.support.UsedWordInPKMObject"/>
      </set>
      ...
   </class>
</hibernate-mapping>

<?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 package="im.myp.domain.pkm.object">
   <class name="PKMObject" table="PKM_OBJECT">
      <!--<meta attribute="generated-class">im.myp.domain.pkm.object.PKMObject</meta> -->
      <meta attribute="scope-class">public abstract</meta>
      <id name="id" type="int" column="PKM_OBJECT_ID">
         <generator class="identity"></generator>
      </id>
      ...
      <set name="words" inverse="true" cascade="all-delete-orphan" >
         <key column="PKM_OBJECT_ID" />
         <one-to-many class="im.myp.domain.pkm.user.support.UsedWordInPKMObject"/>
      </set>
      ...
   </class>
</hibernate-mapping>

<?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 package="im.myp.domain.pkm.user.support">
   <class name="UsedWordInPKMObject" table="USED_WORD_IN_PKM_OBJECT">
      <meta attribute="generated-class">im.myp.domain.pkm.user.support.AUsedWordInPKMObject</meta>
      <meta attribute="scope-class">public abstract</meta>
      <composite-id name="usedWordInPKMObjectId" class="AUsedWordInPKMObjectId">
         <meta attribute="generated-class">im.myp.domain.pkm.user.support.AUsedWordInPKMObjectId</meta>
         <meta attribute="scope-class">public</meta>
         <meta attribute="use-in-equals">true</meta>
         <key-many-to-one class="UsedWord" name="usedWord" column="USED_WORD_ID" />
         <key-many-to-one class="im.myp.domain.pkm.object.PKMObject" name="pkmObject" column="PKM_OBJECT_ID" />
      </composite-id>
      <property name="counter"  type="int">
         <column name="COUNTER" length="10" not-null="true" />
      </property>
   </class>
</hibernate-mapping>

Unknown entity: im.myp.domain.pkm.user.support.AUsedWordInPKMObject; nested exception is org.hibernate.MappingException: Unknown entity: im.myp.domain.pkm.user.support.AUsedWordInPKMObject
    [junit] org.springframework.orm.hibernate3.HibernateSystemException: Unknown entity: im.myp.domain.pkm.user.support.AUsedWordInPKMObject; nested exception is org.hibernate.MappingException: Unknown entity: im.myp.domain.pkm.user.support.AUsedWordInPKMObject

//... INIT DES OBJEKTES UND DES WORTES
//ASSOZIATIONSTABELLE:
      UsedWordInPKMObject uwInObj = new UsedWordInPKMObject();
      UsedWordInPKMObjectId uwInObjId = new UsedWordInPKMObjectId();
      
      uwInObjId.setPkmObject(pkmObject);
      uwInObjId.setUsedWord(u1);
      
      uwInObj.setUsedWordInPKMObjectId(uwInObjId);
      int counter = 10;
      uwInObj.setCounter(counter);
      
      usedWordInPKMObjectDao.save(uwInObj);
      List<UsedWordInPKMObject> uWinPKM = usedWordInPKMObjectDao.loadAll();
      assertEquals(1, uWinPKM.size());
//DIES KLAPPT WUNDERBAR
      for(int i = 0; i < uWinPKM.size();i++){
         System.out.println(uWinPKM.get(i).getUsedWordInPKMObjectId().getUsedWord().getWord());
         System.out.println(uWinPKM.get(i).getUsedWordInPKMObjectId().getPkmObject().getObjectName());
         System.out.println(uWinPKM.get(i).getCounter());
      }
//HIER CRASHT ES
      assertEquals(counter, usedWordInPKMObjectDao.load(uwInObj.getUsedWordInPKMObjectId()).getCounter());