Hello,

i mapped a class Qualification with hibernate. Qualification is linked with User and Device. Device is linked with DeviceFamily.
Each of this 4 objects have their mapping files. To create a qualification in database i always set firt the device and the user attribut.
This work in junit, i'm able to create a Qualification, but fail in tomcat environment ( it has already worked )
Any direction where i could search ?

Note: the generated SQL is the one shown when a DeviceFamily, then a Device, then a Qualification is created and when the qualifcation is saved - with create method, see below.



Hibernate version:3

Mapping documents:
<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">

<hibernate-mapping>
<class name="fuse.domain.Qualification" table="Qualifications" lazy="false">
<cache usage="read-write" />
<id name="id" column="Qual_id" type="integer" unsaved-value="0">
<generator class="identity"/>
</id>
<property name="title" column="Title" type="string" />
<property name="rtp" column="Rtp" type="date" />
<many-to-one name="owner" class="fuse.domain.user.User" column="userId" cascade="save-update"/>
<many-to-one name="device" class="fuse.domain.Device" column="Product_id" cascade="save-update"/>
</class>
</hibernate-mapping>


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

public int create(Qualification q)
{
logger.debug("Creating a new Qualification " + q);
Session s = HibernateUtil.getSession();
HibernateUtil.beginTransaction();

s.save(q);
s.flush();

HibernateUtil.commitTransaction();

int result = q.getId(); // id has been set by hibernate

return result;
}


Full stack trace of any exception that occurs:
198062 [http-8080-Processor25] ERROR fuse.command.FuseCommand - Exception catched in command : org.hibernate.exception.GenericJDBCException, could not insert: [fuse.domain.Qualification]
198093 [http-8080-Processor25] ERROR org.apache.catalina.core.ContainerBase.[Catalina].[localhost].[/FUSE].[FUSE Servlet] - "Servlet.service()" pour la servlet FUSE Servlet a généré une exception
org.hibernate.AssertionFailure: null id in entry (don't flush the Session after an exception occurs)
at org.hibernate.event.def.DefaultFlushEntityEventListener.checkId(DefaultFlushEntityEventListener.java:49)
at org.hibernate.event.def.DefaultFlushEntityEventListener.onFlushEntity(DefaultFlushEntityEventListener.java:82)
at org.hibernate.event.def.AbstractFlushingEventListener.flushEntities(AbstractFlushingEventListener.java:190)
at org.hibernate.event.def.AbstractFlushingEventListener.flushEverythingToExecutions(AbstractFlushingEventListener.java:70)
at org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:26)
at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:726)
at org.hibernate.impl.SessionImpl.managedFlush(SessionImpl.java:320)
at org.hibernate.transaction.JDBCTransaction.commit(JDBCTransaction.java:86)
at fuse.utils.hibernate.HibernateUtil.commitTransaction(Unknown Source)
at fuse.utils.hibernate.SessionManager.doFilter(Unknown Source)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:856)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:744)
at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
at java.lang.Thread.run(Thread.java:595)



Name and version of the database you are using: SQL Server

The generated SQL (show_sql=true):
Hibernate: insert into ProductsFamily (Name) values (?)
Hibernate: insert into Products (Name, Family_id) values (?, ?)
Hibernate: insert into Qualifications (Title, Rtp, userId, Product_id) values (?, ?, ?, ?)


Debug level Hibernate log excerpt:

Could it be that some part of your web framework( Struts?) tries to populate some of you entities and then there are few possibilities:
- an 'empty' entity gets created and default ID values is null;
- some reset procedure nullifies ID before request, and request does not have ID parameter (should come from a hidden field perhaps);

In any case: some related to Qualification entity is not null. Based on your exception I suggest to look at entities which do not have autogenerated id (User?).