org.hibernate.MappingException: unmapped class

angela · **Posted:** Mon Aug 14, 2006 8:54 am

hello all

I'm using hbm2java task (hibernate tools 3.2 beta 6a) task generate my java pojos from the hibernate mapping files.

I have 2 directories with hibernate mapping files, because i have two projects which are connected in Eclipse IDE.

Some hibernate mapping files in my Project refer to classes from the other project. In the file below the mapping file for class najsre7.model.Angebot refers for example to najs.model.Verband from the other project.

Code:

<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<hibernate-mapping  auto-import="false" >
    <class name="najsre7.model.Angebot" table="TANGEBOT">
        <id name="id" type="java.lang.Integer">
            <meta attribute="use-in-tostring">true</meta>
            <meta attribute="use-in-equals">true</meta>
            <column name="ILAUFNUMMER" precision="9" scale="0" />
            <generator class="sequence">
                <param name="sequence">SEQ_TANGEBOT</param>
            </generator>
        </id>
        <timestamp name="mutDatum" column="DMUTDAT" />
        <many-to-one name="organisation" class="najs.model.Organisation" lazy="false" fetch="join" >
            <column name="FK_TORG_ILAUFNR" precision="9" scale="0" not-null="true" />
        </many-to-one>
        <many-to-one name="verband" class="najs.model.Verband" lazy="false" fetch="join" >
            <column name="FK_TVRB_ILAUFNR" precision="9" scale="0" />
        </many-to-one>
        <many-to-one name="angebotsArt" class="najsre7.model.AngebotArt" fetch="join" >
            <column name="FK_TAART_ILAUFNR" precision="9" scale="0"  />
        </many-to-one>
    </class>
</hibernate-mapping>

How can i start the task, without getting errors?!

Code:

[hibernatetool] An exception occurred while running exporter #2:hbm2java (Generates a set of .java files)
[hibernatetool] To get the full stack trace run ant with -verbose
[hibernatetool] org.hibernate.MappingException: An association from the table TANGEBOT refers to an unmapped class: najs.model.Verband

Is there a way to refer the classpath to the other project as well?

kind regards
Angela

max · **Posted:** Mon Aug 14, 2006 9:25 am

May I suggest adding the other projects classpath to the classpath you pass into the hibernatetool ? :)

angela · **Posted:** Mon Aug 14, 2006 9:34 am

max wrote:

May I suggest adding the other projects classpath to the classpath you pass into the hibernatetool ? :)

yes :-) i already tried that:

Code:

<target name="init" description="Initialize">
................................

<property name="bin.dir" value="WebContent/WEB-INF/classes" />
   <property name="bin.dir.business" value="C:/ndbjs/NDBJS Business Layer/bin" />

<path id="classpath" >   
      <fileset dir="${eclipseTools.dir}">
         <include name="**/*.jar"/>
      </fileset>
         
      <fileset dir="${eclipseHibernate.dir}">
         <include name="**/*.jar"/>
      </fileset>

      <pathelement location="${lib.dir.web}/ojdbc14_g.jar" />      
      <pathelement location="${lib.dir.web}/duke_2.0.jar" />   
      <pathelement location="${bin.dir}" />   
      <pathelement location="${bin.dir.business}" />
   </path>
   
   <taskdef 
        name="hibernatetool" 
        classname="org.hibernate.tool.ant.HibernateToolTask">
      <classpath refid="classpath" />
   </taskdef>
</target>   

<target name="generatePOJOS" depends="init" description="Generates model classes">
   <hibernatetool destdir="${dest.dir.pojo}">
               <classpath refid="classpath" />
           <configuration >
                <fileset dir="${dest.dir.hbm}">
                       <include name="*.hbm.xml"/>
                 </fileset>
           </configuration> 

          <hbm2java jdk5="false" ejb3="false" />
             
   </hibernatetool>
</target>

what did i forget?

regards Angela

max · **Posted:** Mon Aug 14, 2006 9:36 am

maybe the mapping files from the other project.

angela · **Posted:** Mon Aug 14, 2006 9:41 am

max wrote:

maybe the mapping files from the other project.

hmmm they're in the following path as well:

<property name="bin.dir.business" value="C:/ndbjs/NDBJS Business Layer/bin" />

max · **Posted:** Mon Aug 14, 2006 9:46 am

well they are not being loaded by your cfg.xml or filepattern

angela · **Posted:** Wed Aug 16, 2006 3:33 am

I can't get it working. I added a jar file which contains all other hibernate mapping files and classes to the classpath:

<pathelement location="${lib.dir.web}/ndbjsBussinessLayer.jar" />

But it isn't working....any ideas?

angela

max · **Posted:** Wed Aug 16, 2006 3:36 am

How are you adding those hbm.xml ?

via <mapping resource="xxx"/> in cfg.xml or just via the fileset ?

The resource mapping will look up in the classpath (and should thus work), a fileset is done via the filesystem where hbm.xml in a jar is not visible.