This is my first post and I am new to Hibernate + Spring. I am using XML for Hibernate mapping declaration in my applicationContext.xml file.
Briefly, I am trying to do:
parent.setChild(null);
parentDao.update(parent);
With the hope that it will delete the child. But it doesn't work. :(
Instead, I've got this Exception:
Caused by: java.lang.NullPointerException at org.hibernate.engine.EntityEntry.getLoadedValue(EntityEntry.java:255) at org.hibernate.engine.Cascade.cascadeProperty(Cascade.java:232) at org.hibernate.engine.Cascade.cascade(Cascade.java:161) at org.hibernate.engine.Cascade.cascade(Cascade.java:127) at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.cascadeOnUpdate(DefaultSaveOrUpdateEventListener.java:376) at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.performUpdate(DefaultSaveOrUpdateEventListener.java:350) at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.entityIsDetached(DefaultSaveOrUpdateEventListener.java:246) at org.hibernate.event.def.DefaultUpdateEventListener.performSaveOrUpdate(DefaultUpdateEventListener.java:57) at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:93) at org.hibernate.impl.SessionImpl.fireUpdate(SessionImpl.java:742) at org.hibernate.impl.SessionImpl.update(SessionImpl.java:730) at org.hibernate.impl.SessionImpl.update(SessionImpl.java:722) at org.springframework.orm.hibernate3.HibernateTemplate$14.doInHibernate(HibernateTemplate.java:708) at org.springframework.orm.hibernate3.HibernateTemplate.doExecute(HibernateTemplate.java:406) at org.springframework.orm.hibernate3.HibernateTemplate.executeWithNativeSession(HibernateTemplate.java:374) at org.springframework.orm.hibernate3.HibernateTemplate.update(HibernateTemplate.java:705) at org.springframework.orm.hibernate3.HibernateTemplate.update(HibernateTemplate.java:701) at fr.gouv.travail.gestionAccords.server.dao.implementations.DossierDAOImpl.update(DossierDAOImpl.java:163) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:318) at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:183) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150) at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:110) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172) at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:202) at $Proxy38.update(Unknown Source) at fr.gouv.travail.gestionAccords.server.business.gestionDossiers.detailsDossier.commons.implementations.DetailsDossierBusinessImpl.update(DetailsDossierBusinessImpl.java:396)
I've seen that I have to declare delete-orphan
in my XML mapping file but it's getting me crazy because it doesn't want to work. Could you please have a look at what is wrong?
So, in my current project I have a one-to-one relationship: here is my XML mapping for the parent called DossierBean.
DossierBean.hbm.xml
<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd">
<hibernate-mapping>
<class name="fr.gouv.travail.gestionAccords.server.dao.beans.pojo.DossierBean" table="dos">
<id name="numeroDossier" type="string">
<column name="num_dos" />
<generator class="assigned" />
</id>
<one-to-one name="travailleurHandicape" class="fr.gouv.travail.gestionAccords.server.dao.beans.pojo.TravailleurHandicapeBean" cascade="all,delete-orphan" lazy="false" />
// Other properties...
</class>
</hibernate-mapping>
TravailleurHandicapeBean.hbm.xml
<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd">
<hibernate-mapping>
<class name="fr.gouv.travail.gestionAccords.server.dao.beans.pojo.TravailleurHandicapeBean" table="tha">
<id name="numeroDossier" type="string">
<column name="num_dos" />
<generator class="foreign">
<param name="property">dossier</param>
</generator>
</id>
<one-to-one name="dossier" class="fr.gouv.travail.gestionAccords.server.dao.beans.pojo.DossierBean" constrained="true" />
<property name="dateAgrement" column="dt_agrement" type="date"/>
<property name="dureeAgrement" column="dur_agrement" type="integer"/>
<property name="indicateurRenouv" column="ind_renouv" type="character"/>
</class>
</hibernate-mapping>
DossierBean.java (Parent bean) :
@Named("dossierBean")
@Scope("prototype")
public class DossierBean
{
private String numeroDossier; // PK
private TravailleurHandicapeBean travailleurHandicape; // One-to-one relation
/**
* @return the numeroDossier
*/
public String getNumeroDossier()
{
return numeroDossier;
}
/**
* @param numeroDossier the numeroDossier to set
*/
public void setNumeroDossier(String numeroDossier)
{
this.numeroDossier = numeroDossier;
}
/**
* @return the travailleurHandicape
*/
public TravailleurHandicapeBean getTravailleurHandicape()
{
return travailleurHandicape;
}
/**
* @param travailleurHandicape the travailleurHandicape to set
*/
public void setTravailleurHandicape(TravailleurHandicapeBean travailleurHandicape)
{
this.travailleurHandicape = travailleurHandicape;
}
}
TravailleurHandicapeBean.java (Child bean) :
@Named("travailleurHandicapeBean")
@Scope("prototype")
public class TravailleurHandicapeBean
{
private String numeroDossier;
private DossierBean dossier;
private Date dateAgrement;
private Integer dureeAgrement;
private Character indicateurRenouv;
/**
* @return the numeroDossier
*/
public String getNumeroDossier()
{
return numeroDossier;
}
/**
* @param numeroDossier the numeroDossier to set
*/
public void setNumeroDossier(String numeroDossier)
{
this.numeroDossier = numeroDossier;
}
/**
* @return the dateAgrement
*/
public Date getDateAgrement()
{
return dateAgrement;
}
/**
* @param dateAgrement the dateAgrement to set
*/
public void setDateAgrement(Date dateAgrement)
{
this.dateAgrement = dateAgrement;
}
/**
* @return the dureeAgrement
*/
public Integer getDureeAgrement()
{
return dureeAgrement;
}
/**
* @param dureeAgrement the dureeAgrement to set
*/
public void setDureeAgrement(Integer dureeAgrement)
{
this.dureeAgrement = dureeAgrement;
}
/**
* @return the indicateurRenouv
*/
public Character getIndicateurRenouv()
{
return indicateurRenouv;
}
/**
* @param indicateurRenouv the indicateurRenouv to set
*/
public void setIndicateurRenouv(Character indicateurRenouv)
{
this.indicateurRenouv = indicateurRenouv;
}
/**
* @return the dossier
*/
public DossierBean getDossier()
{
return dossier;
}
/**
* @param dossier the dossier to set
*/
public void setDossier(DossierBean dossier)
{
this.dossier = dossier;
}
}
Thanks for your help!
No answers ? Thanks for your contribution...
See this bug report on Hibernate: https://hibernate.onjira.com/browse/HHH-5267 Appears to be exactly your issue. I'm not sure if it only affects version 3.5 or 4.x as well.
Workaround appears to be calling session.merge() instead of session.saveOrUpdate()