Hibernate version:
2.1
Mapping documents:

<hibernate-mapping>
<class
name="com.test.model.Evaluation"
table="evaluations"
>

<composite-id name="comp_id" class="com.test.model.EvaluationPK">
<meta attribute="field-description" inherit="false">
@hibernate.id
generator-class="assigned"
</meta>
<key-property
name="evaluator"
column="evaluator"
type="java.lang.Integer"
length="4"
>
</key-property>
<key-property
name="evaluated"
column="evaluated"
type="java.lang.Integer"
length="4"
>
</key-property>
<key-property
name="questionNo"
column="question_no"
type="java.lang.Integer"
length="4"
>
</key-property>
</composite-id>

<property
name="evaluateAs"
type="int"
column="evaluate_as"
not-null="true"
length="4"
>
</property>
<property
name="grades"
type="int"
column="grades"
not-null="true"
length="4"
>
</property>

<!-- Associations -->
<!-- derived association(s) for compound key -->
<!-- bi-directional many-to-one association to Evalog -->
<many-to-one
name="evalog"
class="com.test.model.Evalog"
update="false"
insert="false"
>
<column name="evaluator" />
<column name="evaluated" />
</many-to-one>

<!-- end of derived association(s) -->


</class>
</hibernate-mapping>


<hibernate-mapping>

<class
name="com.test.model.Evalog"
table="evalogs"
>
<composite-id name="comp_id" class="com.test.model.EvalogPK">
<key-property
name="evaluated"
column="evaluated"
type="java.lang.Integer"
length="4"
>
</key-property>
<key-property
name="evaluator"
column="evaluator"
type="java.lang.Integer"
length="4"
>
</key-property>
</composite-id>


<!-- Associations -->
<!-- derived association(s) for compound key -->
<!-- end of derived association(s) -->

<!-- bi-directional one-to-many association to Evaluation -->
<set
name="evaluations"
lazy="true"
inverse="true"
cascade="all"
>
<key>
<column name="evaluator" />
<column name="evaluated" />
</key>
<one-to-many
class="com.test.model.Evaluation"
/>
</set>

</class>
</hibernate-mapping>


Code between sessionFactory.openSession() and session.close():

else if(request.getParameter("points") != null) {
StringTokenizer st = new StringTokenizer(request.getParameter("points"), ":");
int count = 0;
EvalogPK evalogPK = new EvalogPK(Integer.valueOf(request.getParameter("id")), Integer.valueOf(request.getParameter("EvalId")));
Evalog evalog = new Evalog();
evalog.setComp_id(evalogPK);
if (evalog.getEvaluations() == null) {
log.info("after eval1: " + evalog.getEvaluations());
evalog = evalogMgr.saveEvalog(evalog);
log.info("after eval2: " + evalog.getEvaluations());
evalog = evalogMgr.getEvalog(evalogPK);
log.info("after eval3: " + evalog.getEvaluations());
}


Full stack trace of any exception that occurs:

[9/25/04 9:20:58:641 EDT] 375bb279 EvaluateContr I com.espn.web.EvaluateController Manager : jeff : true
[9/25/04 9:20:58:656 EDT] 375bb279 EvaluateContr I com.espn.web.EvaluateController after eval1: null
[9/25/04 9:20:58:734 EDT] 375bb279 DispatcherSer E org.springframework.web.servlet.DispatcherServlet Could not complete request
[9/25/04 9:20:58:750 EDT] 375bb279 DispatcherSer E org.springframework.web.servlet.DispatcherServlet TRAS0014I: The following exception was logged org.springframework.orm.hibernate.HibernateSystemException: No persister for: com.espn.model.Evalog; nested exception is net.sf.hibernate.MappingException: No persister for: com.espn.model.Evalog
net.sf.hibernate.MappingException: No persister for: com.espn.model.Evalog
at net.sf.hibernate.impl.SessionFactoryImpl.getPersister(SessionFactoryImpl.java:344)
at net.sf.hibernate.impl.SessionImpl.getClassPersister(SessionImpl.java:2686)
at net.sf.hibernate.impl.SessionImpl.getPersister(SessionImpl.java:2693)
at net.sf.hibernate.impl.SessionImpl.saveOrUpdate(SessionImpl.java:1381)
at org.springframework.orm.hibernate.HibernateTemplate$13.doInHibernate(HibernateTemplate.java:320)
at org.springframework.orm.hibernate.HibernateTemplate.execute(HibernateTemplate.java:176)
at org.springframework.orm.hibernate.HibernateTemplate.saveOrUpdate(HibernateTemplate.java:317)
at com.espn.dao.hibernate.EvalogDAOHibernate.saveEvalog(EvalogDAOHibernate.java:61)
at com.espn.service.impl.EvalogManagerImpl.saveEvalog(EvalogManagerImpl.java:50)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:79)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java(Compiled Code))
at java.lang.reflect.Method.invoke(Method.java(Compiled Code))
at org.springframework.aop.framework.AopProxyUtils.invokeJoinpointUsingReflection(AopProxyUtils.java:61)
at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:149)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:116)
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:56)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:138)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:152)
at $Proxy6.saveEvalog(Unknown Source)
at com.espn.web.EvaluateController.handleRequest(EvaluateController.java:93)
at org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter.handle(SimpleControllerHandlerAdapter.java:44)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:495)
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:321)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at com.ibm.ws.webcontainer.servlet.StrictServletInstance.doService(StrictServletInstance.java:110)
at com.ibm.ws.webcontainer.servlet.StrictLifecycleServlet._service(StrictLifecycleServlet.java:174)
at com.ibm.ws.webcontainer.servlet.IdleServletState.service(StrictLifecycleServlet.java:313)
at com.ibm.ws.webcontainer.servlet.StrictLifecycleServlet.service(StrictLifecycleServlet.java:116)
at com.ibm.ws.webcontainer.servlet.ServletInstance.service(ServletInstance.java:283)
at com.ibm.ws.webcontainer.servlet.ValidServletReferenceState.dispatch(ValidServletReferenceState.java:42)
at com.ibm.ws.webcontainer.servlet.ServletInstanceReference.dispatch(ServletInstanceReference.java:40)
at com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.handleWebAppDispatch(WebAppRequestDispatcher.java:983)
at com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.dispatch(WebAppRequestDispatcher.java:564)
at com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.forward(WebAppRequestDispatcher.java:200)
at com.ibm.ws.webcontainer.srt.WebAppInvoker.doForward(WebAppInvoker.java:119)
at com.ibm.ws.webcontainer.srt.WebAppInvoker.handleInvocationHook(WebAppInvoker.java:276)
at com.ibm.ws.webcontainer.cache.invocation.CachedInvocation.handleInvocation(CachedInvocation.java:71)
at com.ibm.ws.webcontainer.cache.invocation.CacheableInvocationContext.invoke(CacheableInvocationContext.java:116)
at com.ibm.ws.webcontainer.srp.ServletRequestProcessor.dispatchByURI(ServletRequestProcessor.java:186)
at com.ibm.ws.webcontainer.oselistener.OSEListenerDispatcher.service(OSEListener.java:334)
at com.ibm.ws.webcontainer.http.HttpConnection.handleRequest(HttpConnection.java:56)
at com.ibm.ws.http.HttpConnection.readAndHandleRequest(HttpConnection.java:618)
at com.ibm.ws.http.HttpConnection.run(HttpConnection.java:439)
at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:672)
.

Name and version of the database you are using:
postgresql 7.4.5

The generated SQL (show_sql=true):

Debug level Hibernate log excerpt:

[code][/code]