Major These classes need to be provided by the runtime plugins, either implicitly if they are available in the Hibernate Tools library, or else by explicitly creating them and overriding the - possibly renamed - class from the corresponding Hibernate Tools library.
An explicit test needs to guard this.
Following exporter classes need to be present:
org.hibernate.tool.hbm2x.Hbm2DDLExporterorg.hibernate.tool.hbm2x.POJOExporterorg.hibernate.tool.hbm2x.HibernateMappingExporterorg.hibernate.tool.hbm2x.DAOExporterorg.hibernate.tool.hbm2x.GenericExporterorg.hibernate.tool.hbm2x.HibernateConfigurationExporterorg.hibernate.tool.hbm2x.DocExporterorg.hibernate.tool.hbm2x.Hbm2DDLExporterorg.hibernate.tool.hbm2x.QueryExporter