hi,

Here are the two related tables mappings :

<!-- HESAPPLAN -->
<class name="tr.com.usta.ITBMuhasebeOrtak.core.dvo.muhasebe.HesapPlan" table="U_HESAPPLANI">
<id name="hesapkod" column="HESAPKOD">
</id>
<property name="usthesapkod" column="USTHESAPKOD" length="30" not-null="false"/>
<property name="hesapad" column="HESAPAD" length="60" not-null="true"/>
<property name="detay" column="DETAY" length="1" not-null="true"/>
<property name="kirilimsayisi" type="integer" column="KIRILIMSAYISI" not-null="true"/>
<property name="seviye" column="SEVIYE" type="integer" not-null="true"/>
<property name="bilanco" column="BILANCO" length="5" not-null="true"/>
<property name="gelirtablosu" column="GELIRTABLOSU" length="1" not-null="true"/>
<property name="butce" column="BUTCE" length="1" not-null="true"/>
<property name="borcalacak" column="BORCALACAK" length="7" not-null="true"/>
<property name="demirbas" column="DEMIRBAS" length="1" not-null="true"/>
</class>

<!-- FISSATIR -->
<class name="tr.com.usta.ITBMuhasebeOrtak.core.dvo.muhasebe.FisSatir" table="U_FISSATIR">
<id name="fissatirkod" column="FISSATIRKOD">
</id>
<property name="fiskod" column="FISKOD" type="long" not-null="true"/>
<property name="detay" column="DETAY" length="1" not-null="true"/>
<property name="borc" column="BORC" type="double" not-null="true"/>
<property name="alacak" column="ALACAK" type="double" not-null="true"/>
<property name="dovizpbkod" column="DOVIZPBKOD" length="5" not-null="false"/>
<property name="dovizborc" type="double" column="DOVIZBORC" not-null="true"/>
<property name="dovizalacak" column="DOVIZALACAK" type="double" not-null="true"/>
<property name="aciklama" column="ACIKLAMA" length="500" not-null="false"/>
<property name="kurdeger" type="double" column="KURDEGER" not-null="true"/>
<property name="sirano" column="SIRANO" type="long" not-null="false"/>
<many-to-one name="hesapplan" column="HESAPKOD" class="tr.com.usta.ITBMuhasebeOrtak.core.dvo.muhasebe.HesapPlan" unique="true" not-null="true"/>
</class>

As you see in the last part of 'FISSATIR' i define the association relation. Through this, the column named as 'HESAPKOD' in 'FISSATIR' must be used to get the 'HesapPlan' object and set it to 'hesapplan' field of 'FisSatir' class.

When i run the application to get list of 'FISSATIR' the exception is below thrown :
/*******************************EXCEPTION******************/
java.lang.NullPointerException
at org.hibernate.tuple.AbstractEntityTuplizer.createProxy(AbstractEntity
Tuplizer.java:372)
at org.hibernate.persister.entity.AbstractEntityPersister.createProxy(Ab
stractEntityPersister.java:3121)
at org.hibernate.event.def.DefaultLoadEventListener.createProxyIfNecessa
ry(DefaultLoadEventListener.java:232)
at org.hibernate.event.def.DefaultLoadEventListener.proxyOrLoad(DefaultL
oadEventListener.java:173)
at org.hibernate.event.def.DefaultLoadEventListener.onLoad(DefaultLoadEv
entListener.java:87)
at org.hibernate.impl.SessionImpl.fireLoad(SessionImpl.java:889)
at org.hibernate.impl.SessionImpl.internalLoad(SessionImpl.java:857)
at org.hibernate.type.EntityType.resolveIdentifier(EntityType.java:266)
at org.hibernate.type.EntityType.resolve(EntityType.java:303)
at org.hibernate.engine.TwoPhaseLoad.initializeEntity(TwoPhaseLoad.java:
113)
at org.hibernate.loader.Loader.initializeEntitiesAndCollections(Loader.j
ava:842)
at org.hibernate.loader.Loader.doQuery(Loader.java:717)
at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Lo
ader.java:224)
at org.hibernate.loader.Loader.doList(Loader.java:2150)
at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2029)
at org.hibernate.loader.Loader.list(Loader.java:2024)
at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:369)
at org.hibernate.hql.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.ja
va:300)
at org.hibernate.engine.query.HQLQueryPlan.performList(HQLQueryPlan.java
:153)
at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1127)
at org.hibernate.impl.QueryImpl.list(QueryImpl.java:79)
at j2src.tr.com.usta.ITBMuhasebeServer.hibernate.util.HibernateUtil.extr
a(HibernateUtil.java:150)
at j2src.tr.com.usta.ITBMuhasebeServer.servlets.ProcessorServlet.doJobAn
dSetResult(ProcessorServlet.java:101)
at j2src.tr.com.usta.ITBMuhasebeServer.servlets.ProcessorServlet.doPost(
ProcessorServlet.java:57)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:716)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:809)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Appl
icationFilterChain.java:200)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationF
ilterChain.java:146)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperV
alve.java:209)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContex
t.invokeNext(StandardPipeline.java:596)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.jav
a:433)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:948)

at org.apache.catalina.core.StandardContextValve.invoke(StandardContextV
alve.java:144)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContex
t.invokeNext(StandardPipeline.java:596)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.jav
a:433)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:948)

at org.apache.catalina.core.StandardContext.invoke(StandardContext.java:
2358)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.j
ava:133)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContex
t.invokeNext(StandardPipeline.java:596)
at org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatche
rValve.java:118)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContex
t.invokeNext(StandardPipeline.java:594)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.j
ava:116)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContex
t.invokeNext(StandardPipeline.java:594)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.jav
a:433)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:948)

at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineVal
ve.java:127)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContex
t.invokeNext(StandardPipeline.java:596)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.jav
a:433)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:948)

at org.apache.coyote.tomcat4.CoyoteAdapter.service(CoyoteAdapter.java:15
2)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java
:799)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.proce
ssConnection(Http11Protocol.java:705)
at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java
:577)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadP
ool.java:683)
at java.lang.Thread.run(Thread.java:534)
/*******************************EXCEPTION******************/

I must indicate that every instance of 'FISSATIR' is initialized. So, what can you say?

no answer yet! I am suprised. I thought that it was a simple problem but it seems it is hard.

So must work more carefully...;)

Hi,

I have exactly the same problem.
(see my post of yesterday in this forum and in the german forum).

If I delete the association in the mapping it works.

What is your environment?

I use postgreSQL 8.0,
Hibernate 3.1.2
postgresql-8.0-314-jdbc2.jar
and Java 1.4.2-02

Tell me if you have success.

Ciao,
Rainer

hi,

i must indicate that i get the result for 'FISSATIR' like this :



As you see here i give a query to get data. I expect hibernate to select from the table and update itself after the selection to set the 'HESAPPLAN' field that is aggregated in 'FISSATIR'. (Isn't it true?)

But hibernate does not work as i expect, because it was programmed to hold an instance of 'FISSATIR' or instance list of 'FISSATIR' in session and set the aggregated fields on it/them. So, if you have no object (i mean if 'FISSATIR' instance is null in session) it gives a "NullPointerException".

So, we must put it to session with 'session.load(...)' command. But here i have got a special case. The special case is this :

The 'FISKOD' field is related with a table named as 'U_FIS' and i try to get the 'FISSATIR' list through like a query : "from FisSatir where fiskod = 3451"

I EXPECT from HIBERNATE to LOAD the 'FISSATIR' list WHERE the 'fiskod' equals '3451' for example. While doing this, it must set the aggregated 'HesapPlan' field. Is the special cases are not supported?

Ignoring Hibernate Team here : Please give an acceptable answer. Because these type of requirements increases and there is another post about the same subject in forum also.

Regards,[/u]

this is a *basic* many-to-one mapping that if it did not work we would not be able to run even the most basic hibernate tests.

reduce the problem and run it a simple junit tests instead of a full blown container....there must be more to this than what you show.