/** Walk through all mapped entity's descriptors verifying that no data exists on the database */
private static void verifyDatabaseEmpty(EntityManager em) {
Server server = JpaHelper.getEntityManager(em).getServerSession();
for (Iterator i = server.getDescriptors().values().iterator(); i.hasNext(); ) {
RelationalDescriptor descriptor = (RelationalDescriptor) i.next();
if (!descriptor.isAggregateDescriptor()) {
ReportQuery rq = new ReportQuery(descriptor.getJavaClass(), new ExpressionBuilder());
rq.addCount();
rq.setShouldReturnSingleValue(true);
int count = -1;
try {
count = ((Number) server.executeQuery(rq)).intValue();
} catch (DatabaseException dbe) {
}
System.out.println("COUNT(" + descriptor.getAlias() + "): " + count);
}
}
}
