I am trying to use Hibernate Tools in Eclipse simply to read some hbm.xml files and then generate the pojos from them. I can't get it to work. When I go to rebuild configuration I get <SessionFactory error: Unable to instantiate devualt tuplizer [org.hibernate.tuple.component.PojoComponentTuplizer] and the Database fails with <Reading schema error: Getting deatabase metadata>.

Is all this necessary? Logically, simply reading the config files ought to be able to generate the java. Yet I can't get it to do that. Perhaps because of the above problem or perhaps for some other reason, I do not see the "start the Hibernate Code Generation which is available in the toolbar via the Hibernate icon or via the Run > Hibernate Code Generation menu item." as indicated in the web documentation.

What am I doing wrong and is database connectivity required to use this tool?

Well, duh, I had to be in the Hibernate perspective to get these specail Run options to run the code generation.

However, still no joy.

org.hibernate.console.HibernateConsoleRuntimeException: Received a NoClassDefFoundError, probably the console configuration classpath is incomplete or contains conflicting versions of the same class
at org.hibernate.eclipse.launch.CodeGenerationLaunchDelegate.launch(CodeGenerationLaunchDelegate.java:271)
at org.eclipse.debug.internal.core.LaunchConfiguration.launch(LaunchConfiguration.java:853)
at org.eclipse.debug.internal.core.LaunchConfiguration.launch(LaunchConfiguration.java:702)
at org.eclipse.debug.internal.ui.DebugUIPlugin.buildAndLaunch(DebugUIPlugin.java:924)
at org.eclipse.debug.internal.ui.DebugUIPlugin$8.run(DebugUIPlugin.java:1128)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)
Caused by: java.lang.NoClassDefFoundError: Could not initialize class org.hibernate.tool.Version
at org.hibernate.tool.hbm2x.TemplateHelper.setupContext(TemplateHelper.java:215)
at org.hibernate.tool.hbm2x.AbstractExporter.setupContext(AbstractExporter.java:147)
at org.hibernate.tool.hbm2x.POJOExporter.setupContext(POJOExporter.java:44)
at org.hibernate.tool.hbm2x.AbstractExporter.start(AbstractExporter.java:94)
at org.hibernate.eclipse.launch.CodeGenerationLaunchDelegate$1.execute(CodeGenerationLaunchDelegate.java:352)
at org.hibernate.console.execution.DefaultExecutionContext.execute(DefaultExecutionContext.java:63)
at org.hibernate.console.ConsoleConfiguration.execute(ConsoleConfiguration.java:72)
at org.hibernate.eclipse.launch.CodeGenerationLaunchDelegate.runExporters(CodeGenerationLaunchDelegate.java:327)
at org.hibernate.eclipse.launch.CodeGenerationLaunchDelegate.launch(CodeGenerationLaunchDelegate.java:254)
... 5 more

OK, which is it? incomplete or conflicting versions. Unfortunately, there isn't an option to see the actual classpath I'm running with. I've tried the default configuration (which includes Maven dependencies), the default plus hibernate-tools.jar from my Eclipse folder, and one I've built up myself. Can't get around this. This should be simpler. What am I missing.

Did you solve this problem?

This was four months ago. I remember that I eventually solved it, but I do not remember how. I don't use this tool on an everyday basis.