I'm using Hibernate and Spring with the DAO pattern (all Hibernate dependencies in a *DAO.java class). I have nine
unit tests (JUnit) which create some business objects, save them, and perform operations on them; the objects are in a hash (so I'm reusing the same objects all the time).
My JUnit setup method calls my DAO.deleteAllObjects() method which calls getSession().createSQLQuery("DELETE FROM <tablename>").executeUpdate() for my business object table (just one).
One of my
unit tests (#8/9) freezes. I presumed it was a database deadlock, because the Hibernate log file shows my delete statement last. However, debugging showed that it'
s simply HibernateTemplate.save(someObject) that'
s freezing. (Eclipse shows that it'
s freezing on HibernateTemplate.save(Object), line 694.)
Also interesting to note is that running this test by itself (not in the suite of 9 tests) doesn't cause any problems.
How on earth do I troubleshoot and fix this?
Also, I'm using @Entity annotations, if that matters.
Edit: I removed reuse of my business objects (use unique objects in every method) -- didn't make a difference (still freezes).
Edit: This started trickling into other tests, too (can't run more than one test class without getting something freezing)
Transaction configuration:
<bean id="txManager"
class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource" />
</bean>
<tx:advice id="txAdvice" transaction-manager="txManager">
<!-- the transactional semantics... -->
<tx:attributes>
<!-- all methods starting with 'get' are read-only -->
<tx:method name="get*" read-only="true" />
<tx:method name="find*" read-only="true" />
<!-- other methods use the default transaction settings (see below) -->
<tx:method name="*" />
</tx:attributes>
</tx:advice>
<!-- my bean which is exhibiting the hanging behavior -->
<aop:config>
<aop:pointcut id="beanNameHere"
expression="execution(* com.blah.blah.IMyDAO.*(..))" />
<aop:advisor advice-ref="txAdvice" pointcut-ref="beanNameHere" />
</aop:config>
