Hibernate version: 3.0.5
Hibernate version: 3.0beta2
Name and version of the database you are using: MySQL 4.1.12
Tomcat version: 5.5.9
JDK version: 5.0_03

At runtime I get this warning:
"WARN org.hibernate.hql.QuerySplitter - no persistent classes found for query class: FROM db.KundeData AS kunde ..."
Therefore, the result set of the is empty.

Using *.hbm.xml instead of annotations this warning disappears.

I'm just guessing:
* Tomcat comes bundled with a *read-only* JNDI context
* Is there a problem with annotations?

[quote="juergen.zimmermann"]
Annotations version: 3.0beta2

Here is a stack trace if I'm adding a persistent class via AnnotationConfiguration instead of declaring it in hibernate.cfg.xml

-------------------------------------------------------------------------------
DEBUG db.hibernate.HibernateServlet - BEGIN init
INFO org.hibernate.cfg.Environment - Hibernate 3.0.5
INFO org.hibernate.cfg.Environment - loaded properties from resource hibernate.properties: {hibernate.connection.autocommit=false, hibernate.cglib.use_reflection_optimizer=true, hibernate.dialect=org.hibernate.dialect.MySQLInnoDBDialect, hibernate.show_sql=false, hibernate.connection.url=jdbc:mysql:///widb, hibernate.connection.driver_class=com.mysql.jdbc.Driver, hibernate.connection.datasource=java:comp/env/jdbc/widb}
INFO org.hibernate.cfg.Environment - using CGLIB reflection optimizer
INFO org.hibernate.cfg.Environment - using JDK 1.4 java.sql.Timestamp handling
INFO org.hibernate.cfg.AnnotationConfiguration - Mapping class using metadata: db.KundeData
FATAL db.hibernate.HibernateUtil - Initial SessionFactory cannot be created
java.lang.NoSuchMethodError: org.hibernate.cfg.Mappings.<init>(Ljava/util/Map;Ljava/util/Map;Ljava/util/Map;Ljava/util/Map;Ljava/util/Map;Ljava/util/Map;Ljava/util/List;Ljava/util/List;Lorg/hibernate/cfg/NamingStrategy;Ljava/util/Map;Ljava/util/Map;Ljava/util/Map;)V
at org.hibernate.cfg.ExtendedMappings.<init>(ExtendedMappings.java:43)
at org.hibernate.cfg.AnnotationConfiguration.createExtendedMappings(AnnotationConfiguration.java:125)
at org.hibernate.cfg.AnnotationConfiguration.addAnnotatedClass(AnnotationConfiguration.java:94)
at db.hibernate.HibernateUtil.<clinit>(HibernateUtil.java:27)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:164)
at db.hibernate.HibernateServlet.init(HibernateServlet.java:23)
at javax.servlet.GenericServlet.init(GenericServlet.java:211)
at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1091)
at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:925)
at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:3857)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4118)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1012)
at org.apache.catalina.core.StandardHost.start(StandardHost.java:718)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1012)
at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:442)
at org.apache.catalina.core.StandardService.start(StandardService.java:450)
at org.apache.catalina.core.StandardServer.start(StandardServer.java:683)
at org.apache.catalina.startup.Catalina.start(Catalina.java:537)
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:585)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:271)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:409)

are you sure you're using Hibernate 3.0.5 and Hibernate Annotations 3.0beta2
lookis like a version mismatch to me.

You are right. I'd forgotten to unzip the beta2 version and therefore
was using beta1 :-(

Thanks for the immediate support!

Similar to what the Spring folks did with spring.jar mega-jar, could the hibernate team bundle hibernate with annotations. I see a lot of errors posted on the net with this sort of problem:

java.lang.NoSuchMethodError: org.hibernate.cfg.Mappings.<init>(Ljava/util/Map;Ljava/util/Map;Ljava/util/Map;Ljava/util/Map;Ljava/util/Map;Ljava/util/Map;Ljava/util/List;Ljava/util/List;Lorg/hibernate/cfg/NamingStrategy;Ljava/util/Map;Ljava/util/Map;Ljava/util/Map;)

Thanks

sure, use Jboss Embeddable EJB3, everything is set up for you