I am having an issue with a multiple level inheritance problem, and I don't see any documents anywhere that talk about this.

I have the following hierarchy

Product -> ClientInformation -> PrintJob -> TrifoldBrochure

the first three are abstract classes, and are each marked with @MappedSuperclass. the last one is a concrete subclass. I want to have just one table called 'trifold_brochure' with all the fields from each of the inherited superclasses. I get the following error about a duplicate property mapping, but I'm 99% certain the I don't actually have a duplicate property. I walked the hierarchy and the only place that project occurs is at the very top level.

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Hibernate version: 3.2.6

Mapping documents:

Code between sessionFactory.openSession() and session.close():

Full stack trace of any exception that occurs:
[java] org.hibernate.MappingException: Duplicate property mapping of project found in com.tmdworldwide.projectmanager.db.product.TrifoldBrochure
[java] at org.apache.tools.ant.taskdefs.ExecuteJava.execute(ExecuteJava.java:194)
[java] at org.apache.tools.ant.taskdefs.Java.run(Java.java:747)
[java] at org.apache.tools.ant.taskdefs.Java.executeJava(Java.java:201)
[java] at org.apache.tools.ant.taskdefs.Java.execute(Java.java:104)
[java] at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:288)
[java] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
[java] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
[java] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
[java] at java.lang.reflect.Method.invoke(Method.java:585)
[java] at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:105)
[java] at org.apache.tools.ant.Task.perform(Task.java:348)
[java] at org.apache.tools.ant.Target.execute(Target.java:357)
[java] at org.apache.tools.ant.Target.performTasks(Target.java:385)
[java] at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1329)
[java] at org.apache.tools.ant.Project.executeTarget(Project.java:1298)
[java] at org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:41)
[java] at org.apache.tools.ant.Project.executeTargets(Project.java:1181)
[java] at org.apache.tools.ant.Main.runBuild(Main.java:698)
[java] at org.apache.tools.ant.Main.startAnt(Main.java:199)
[java] at org.apache.tools.ant.launch.Launcher.run(Launcher.java:257)
[java] at org.apache.tools.ant.launch.Launcher.main(Launcher.java:104)
[java] Caused by: org.hibernate.MappingException: Duplicate property mapping of project found in com.tmdworldwide.projectmanager.db.product.TrifoldBrochure
[java] at org.hibernate.mapping.PersistentClass.checkPropertyDuplication(PersistentClass.java:459)
[java] at org.hibernate.mapping.PersistentClass.validate(PersistentClass.java:449)
[java] at org.hibernate.mapping.RootClass.validate(RootClass.java:192)
[java] at org.hibernate.cfg.Configuration.validate(Configuration.java:1108)
[java] at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1293)
[java] at org.hibernate.cfg.AnnotationConfiguration.buildSessionFactory(AnnotationConfiguration.java:915)
[java] at com.tmdworldwide.projectmanager.db.InitializeDatabase.main(InitializeDatabase.java:20)
[java] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
[java] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
[java] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
[java] at java.lang.reflect.Method.invoke(Method.java:585)
[java] at org.apache.tools.ant.taskdefs.ExecuteJava.run(ExecuteJava.java:217)
[java] at org.apache.tools.ant.taskdefs.ExecuteJava.execute(ExecuteJava.java:152)
[java] ... 20 more
[java] --- Nested Exception ---
[java] org.hibernate.MappingException: Duplicate property mapping of project found in com.tmdworldwide.projectmanager.db.product.TrifoldBrochure
[java] at org.hibernate.mapping.PersistentClass.checkPropertyDuplication(PersistentClass.java:459)
[java] at org.hibernate.mapping.PersistentClass.validate(PersistentClass.java:449)
[java] at org.hibernate.mapping.RootClass.validate(RootClass.java:192)
[java] at org.hibernate.cfg.Configuration.validate(Configuration.java:1108)
[java] at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1293)
[java] at org.hibernate.cfg.AnnotationConfiguration.buildSessionFactory(AnnotationConfiguration.java:915)
[java] at com.tmdworldwide.projectmanager.db.InitializeDatabase.main(InitializeDatabase.java:20)
[java] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
[java] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
[java] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
[java] at java.lang.reflect.Method.invoke(Method.java:585)
[java] at org.apache.tools.ant.taskdefs.ExecuteJava.run(ExecuteJava.java:217)
[java] at org.apache.tools.ant.taskdefs.ExecuteJava.execute(ExecuteJava.java:152)
[java] at org.apache.tools.ant.taskdefs.Java.run(Java.java:747)
[java] at org.apache.tools.ant.taskdefs.Java.executeJava(Java.java:201)
[java] at org.apache.tools.ant.taskdefs.Java.execute(Java.java:104)
[java] at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:288)
[java] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
[java] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
[java] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
[java] at java.lang.reflect.Method.invoke(Method.java:585)
[java] at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:105)
[java] at org.apache.tools.ant.Task.perform(Task.java:348)
[java] at org.apache.tools.ant.Target.execute(Target.java:357)
[java] at org.apache.tools.ant.Target.performTasks(Target.java:385)
[java] at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1329)
[java] at org.apache.tools.ant.Project.executeTarget(Project.java:1298)
[java] at org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:41)
[java] at org.apache.tools.ant.Project.executeTargets(Project.java:1181)
[java] at org.apache.tools.ant.Main.runBuild(Main.java:698)
[java] at org.apache.tools.ant.Main.startAnt(Main.java:199)
[java] at org.apache.tools.ant.launch.Launcher.run(Launcher.java:257)
[java] at org.apache.tools.ant.launch.Launcher.main(Launcher.java:104)


Name and version of the database you are using: PostgreSQL 3.2

The generated SQL (show_sql=true):

Debug level Hibernate log excerpt: DEBUG


Problems with Session and transaction handling?

Read this: http://hibernate.org/42.html

I found the problem.