Hi, This is my proposal to solve JIRA issue HBX-577 "hbm2java for annotation from existing inheritance mapping" I figured out how-to do   "joined-subclass" and "table-per-class-herarchy" but  couldn't test it. This solution relies on <meta> tag,  example: <class name="Nota" mutable="false" table="NOTA"         schema="dbo" catalog="DATA" discriminator-value="not null">         <meta  attribute="class-inheritance-type">single-table-per-class-herarchy</meta>