hbm2ddl org.hibernate.MappingExcpetion

Jokeman007 · **Joined:** Fri Apr 04, 2008 12:57 pm **Posts:** 4

i'm trying to go from annotations to a database schema, and i'm getting an org.hibernate.MappingException.

here's my hibernate.cfg.xml

Code:

<!DOCTYPE hibernate-configuration PUBLIC "-//Hibernate/Hibernate Configuration DTD 3.0//EN" "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
<session-factory>

   <property name="connection.url">${hibernate.connection.url}</property>
   <property name="connection.username">${hibernate.connection.username}</property>
   <property name="connection.password">${hibernate.connection.password}</property>

   <property name="connection.driver_class">${hibernate.connection.driver_class}</property>
   <property name="connection.autoReconnect">true</property>
   <property name="connection.autoReconnectForPools">true</property>
   <property name="connection.is-connection-validation-required">true</property>
   <property name="dialect">${hibernate.dialect}</property>
   <property name="show_sql">${hibernate.show.sql}</property>

   <mapping class="x.y.Application" />
   <mapping class="x.y.ApplicationEvent" />
   <mapping class="x.y.ApplicationProbe" />
</session-factory>
</hibernate-configuration>

my build.xml

Code:

<?xml version="1.0" encoding="UTF-8"?>
<project name="myTest" basedir=".">

   <property name="lib.dir" value="../../../WebContent/WEB-INF/lib"/>
   <property name="build.dir" value="build"/>
   <property name="my.dir" value="/e2e/src/main/java/" />
   
   <property name="proj.shortname" value="helloworld-jpa"/>
   
   
   <!-- Classpath declaration -->
    <path id="project.classpath">
        <fileset dir="${lib.dir}">
            <include name="**/*.jar"/>
            <include name="**/*.zip"/>
        </fileset>
    </path>
    
     <!-- Hibernate Tools import -->
    <taskdef name="hibernatetool" classname="org.hibernate.tool.ant.HibernateToolTask" classpathref="project.classpath" classpath="${build.dir}"/>
    
    <hibernatetool destdir="${build.dir}">
      <annotationconfiguration configurationfile="hibernate.cfg.xml"/>
         <hbm2ddl drop="true" create="true" export="true" outputfilename="${proj.shortname}-ddl.sql" delimiter=";"/>
       <cfg2hbm/>
   </hibernatetool>
    
</project>

when i run my build.xml, i get

Code:

Buildfile: /Users/Wong/Documents/workspace-flex/e2e/src/main/resources/build.xml
[hibernatetool] Executing Hibernate Tool with a Hibernate Annotation/EJB3 Configuration
[hibernatetool] 1. task: cfg2hbm (Generates a set of hbm.xml files)
[hibernatetool] Apr 4, 2008 11:43:41 AM org.hibernate.cfg.annotations.Version <clinit>
[hibernatetool] INFO: Hibernate Annotations 3.2.1.GA
[hibernatetool] Apr 4, 2008 11:43:41 AM org.hibernate.cfg.Environment <clinit>
[hibernatetool] INFO: Hibernate 3.2.2
[hibernatetool] Apr 4, 2008 11:43:41 AM org.hibernate.cfg.Environment <clinit>
[hibernatetool] INFO: hibernate.properties not found
[hibernatetool] Apr 4, 2008 11:43:41 AM org.hibernate.cfg.Environment buildBytecodeProvider
[hibernatetool] INFO: Bytecode provider name : cglib
[hibernatetool] Apr 4, 2008 11:43:41 AM org.hibernate.cfg.Environment <clinit>
[hibernatetool] INFO: using JDK 1.4 java.sql.Timestamp handling
[hibernatetool] Apr 4, 2008 11:43:41 AM org.hibernate.cfg.Configuration configure
[hibernatetool] INFO: configuring from file: hibernate.cfg.xml

BUILD FAILED
/resources/build.xml:22: org.hibernate.MappingException: Unable to load class declared as <mapping class="x.y.Application"/> in the configuration:

Total time: 1 second

max · **Posted:** Sat Apr 05, 2008 11:22 am

your classes need to be in the classpath of the <hibernatetool> call.

see docs.

Jokeman007 · **Joined:** Fri Apr 04, 2008 12:57 pm **Posts:** 4

the class path is in the reference to <hibernatetool> in :

Code:

<taskdef name="hibernatetool" classname="org.hibernate.tool.ant.HibernateToolTask" classpathref="project.classpath" classpath="${build.dir}"/>
   
    <hibernatetool destdir="${build.dir}"> 

and i also tried it with classpath in <hibernatetool>, but i'm still getting the same error. i could still be doing it incorrectly. any suggestions?

max · **Posted:** Tue Apr 08, 2008 11:58 am

make sure you don't have overlapping class paths in those two.

don't include user classes in your hibernatetool taskdef. It messes up ant's classloading.

Jokeman007 · **Joined:** Fri Apr 04, 2008 12:57 pm **Posts:** 4

if i use

Code:

instead of

Code:

it runs fine. but it doesn't seem to be reading my package, because the output file is empty.

and i assume the classpath location should be in reference to where my build.xml is correct?

Jokeman007 · **Joined:** Fri Apr 04, 2008 12:57 pm **Posts:** 4

i was able to solve the problem. it was because in my classpath, i wasn't pointing to my WEB-INF/class directory. thanks.