Harnessing hibernate pages 57 - 58. Running ant qtest produces the following error: 

 [java] Exception in thread "main" org.hibernate.MappingException: Named query not known: com.oreilly.hh.tracksNoLongerThan
 [java]     at org.hibernate.impl.AbstractSessionImpl.getNamedQuery(AbstractSessionImpl.java:70)
 [java]     at org.hibernate.impl.SessionImpl.getNamedQuery(SessionImpl.java:1260)
 [java]     at com.oreilly.hh.QueryTest.tracksNoLongerThan(QueryTest.java:24)
 [java]     at com.oreilly.hh.QueryTest.main(QueryTest.java:46)
To fix this error you need to add a "com.oreilly.hh.tracksNoLongerThan" reference to src\com\oreilly\hh\data\Track.hbm.xml: 
	<query name="com.oreilly.hh.tracksNoLongerThan">
		<![CDATA[
			from Track as track
			where track.playTime <= :length
		]]>
	</query>

This is mentioned on page 61, but you need this for QueryTest.java to run via the ant qtest