I have the following entities:
Parent1.
Code:
@Entity
@Table(name="parent1")
public class Parent1 implements Serializable {
...
@OneToMany(mappedBy = "parent1", cascade= CascadeType.ALL, fetch = FetchType.EAGER, orphanRemoval=true)
private List<Child> child;
public List<Child> getChild(){
if (this.child == null)
this.child = new ArrayList<Child>();
return this.child;
}
public void setChild(List<Child> child){
this.child = child;
}
public void addChild(Child child) {
getChild().add(child);
child.setParent1(this);
}
...
}
Parent2
Code:
@Entity
@Table(name="parent2")
public class Parent2 implements Serializable {
...
@OneToMany(mappedBy = "parent2", cascade= CascadeType.ALL, fetch = FetchType.EAGER, orphanRemoval=true)
private List<Child> child;
public List<Child> getChild(){
if (this.child == null)
this.child = new ArrayList<Child>();
return this.child;
}
public void setChild(List<Child> child){
this.child = child;
}
public void addChild(Child child) {
getChild().add(child);
child.setParent2(this);
}
...
}
Child
Code:
@Entity
@Table(name="child")
public class Child implements Serializable {
...
@ManyToOne (optional=false)
@JoinColumn(name="id_parent1", nullable=false)
private Parent1 parent1;
public Parent1 getParent1(){
return this.parent1;
}
public void setParent1(Parent1 parent1){
this.parent1 = parent1;
}
@ManyToOne (optional=false)
@JoinColumn(name="id_parent2", nullable=false)
private Parent2 parent2;
public Parent2 getParent2(){
return this.parent2;
}
public void setParent2(Parent2 parent2){
this.parent2 = parent2;
}
...
}
when I create or delete a Parent1 or Parent2 work, I do as follows:
Code:
//create Parent1 or Parent2 with Child
Parent1 parent1 = new Parent1();
Child child = new Child();
parent1.addChild(child);
em.persist(parent1);
//delete Parent1 or Parent2 with Child
Parent1 parent1 = em.find(Parent1.class, id);
parent1.setChild(null);
em.remove(parent1);
I need to delete all Child associated with a Parent, but I have problems making this task. I do as follows:
Code:
//update Parent remove all child.
Parent1 parent1 = em.find(Parent1.class, id);
parent1.getChild().clear();
em.merge(cajero);
I get the following error:
Code:
ADVERTENCIA: A system exception occurred during an invocation on EJB ManagedParent method public java.lang.String parents.ManagedParent.updateParents()
javax.ejb.EJBException: Transaction aborted
at com.sun.ejb.containers.BaseContainer.completeNewTx(BaseContainer.java:5120)
at com.sun.ejb.containers.BaseContainer.postInvokeTx(BaseContainer.java:4879)
at com.sun.ejb.containers.BaseContainer.postInvoke(BaseContainer.java:2039)
at com.sun.ejb.containers.BaseContainer.postInvoke(BaseContainer.java:1990)
at com.sun.ejb.containers.EJBObjectInvocationHandler.invoke(EJBObjectInvocationHandler.java:213)
at com.sun.ejb.containers.EJBObjectInvocationHandlerDelegate.invoke(EJBObjectInvocationHandlerDelegate.java:79)
at $Proxy439.updateParents()
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at com.sun.corba.ee.impl.presentation.rmi.ReflectiveTie.dispatchToMethod(ReflectiveTie.java:144)
at com.sun.corba.ee.impl.presentation.rmi.ReflectiveTie._invoke(ReflectiveTie.java:174)
at com.sun.corba.ee.impl.protocol.CorbaServerRequestDispatcherImpl.dispatchToServant(CorbaServerRequestDispatcherImpl.java:528)
at com.sun.corba.ee.impl.protocol.CorbaServerRequestDispatcherImpl.dispatch(CorbaServerRequestDispatcherImpl.java:199)
at com.sun.corba.ee.impl.protocol.CorbaMessageMediatorImpl.handleRequestRequest(CorbaMessageMediatorImpl.java:1624)
at com.sun.corba.ee.impl.protocol.CorbaMessageMediatorImpl.handleRequest(CorbaMessageMediatorImpl.java:1486)
at com.sun.corba.ee.impl.protocol.CorbaMessageMediatorImpl.handleInput(CorbaMessageMediatorImpl.java:990)
at com.sun.corba.ee.impl.protocol.giopmsgheaders.RequestMessage_1_2.callback(RequestMessage_1_2.java:214)
at com.sun.corba.ee.impl.protocol.CorbaMessageMediatorImpl.handleRequest(CorbaMessageMediatorImpl.java:742)
at com.sun.corba.ee.impl.protocol.CorbaMessageMediatorImpl.dispatch(CorbaMessageMediatorImpl.java:539)
at com.sun.corba.ee.impl.protocol.CorbaMessageMediatorImpl.doWork(CorbaMessageMediatorImpl.java:2324)
at com.sun.corba.ee.impl.orbutil.threadpool.ThreadPoolImpl$WorkerThread.performWork(ThreadPoolImpl.java:497)
at com.sun.corba.ee.impl.orbutil.threadpool.ThreadPoolImpl$WorkerThread.run(ThreadPoolImpl.java:540)
Caused by: javax.transaction.RollbackException: Transaction marked for rollback.
at com.sun.enterprise.transaction.JavaEETransactionImpl.commit(JavaEETransactionImpl.java:473)
at com.sun.enterprise.transaction.JavaEETransactionManagerSimplified.commit(JavaEETransactionManagerSimplified.java:852)
at com.sun.ejb.containers.BaseContainer.completeNewTx(BaseContainer.java:5114)
... 23 more
Caused by: javax.persistence.EntityNotFoundException: deleted entity passed to persist: [parents.Parent1#<null>]
at org.hibernate.ejb.AbstractEntityManagerImpl.throwPersistenceException(AbstractEntityManagerImpl.java:598)
at org.hibernate.ejb.AbstractEntityManagerImpl$1.beforeCompletion(AbstractEntityManagerImpl.java:513)
at com.sun.enterprise.transaction.JavaEETransactionImpl.commit(JavaEETransactionImpl.java:435)
... 25 more
try other solutions found on blogs such as:
Code:
//update Parent remove all child.
Parent1 parent1 = em.find(Parent1.class, id);
parent1.setChild(null);
em.merge(cajero);
I get the following error:
Code:
ADVERTENCIA: A system exception occurred during an invocation on EJB ManagedParent method public java.lang.String parents.ManagedParent.updateParents()
javax.ejb.EJBException: Transaction aborted
at com.sun.ejb.containers.BaseContainer.completeNewTx(BaseContainer.java:5120)
at com.sun.ejb.containers.BaseContainer.postInvokeTx(BaseContainer.java:4879)
at com.sun.ejb.containers.BaseContainer.postInvoke(BaseContainer.java:2039)
at com.sun.ejb.containers.BaseContainer.postInvoke(BaseContainer.java:1990)
at com.sun.ejb.containers.EJBObjectInvocationHandler.invoke(EJBObjectInvocationHandler.java:213)
at com.sun.ejb.containers.EJBObjectInvocationHandlerDelegate.invoke(EJBObjectInvocationHandlerDelegate.java:79)
at $Proxy479.updateParents()
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at com.sun.corba.ee.impl.presentation.rmi.ReflectiveTie.dispatchToMethod(ReflectiveTie.java:144)
at com.sun.corba.ee.impl.presentation.rmi.ReflectiveTie._invoke(ReflectiveTie.java:174)
at com.sun.corba.ee.impl.protocol.CorbaServerRequestDispatcherImpl.dispatchToServant(CorbaServerRequestDispatcherImpl.java:528)
at com.sun.corba.ee.impl.protocol.CorbaServerRequestDispatcherImpl.dispatch(CorbaServerRequestDispatcherImpl.java:199)
at com.sun.corba.ee.impl.protocol.CorbaMessageMediatorImpl.handleRequestRequest(CorbaMessageMediatorImpl.java:1624)
at com.sun.corba.ee.impl.protocol.CorbaMessageMediatorImpl.handleRequest(CorbaMessageMediatorImpl.java:1486)
at com.sun.corba.ee.impl.protocol.CorbaMessageMediatorImpl.handleInput(CorbaMessageMediatorImpl.java:990)
at com.sun.corba.ee.impl.protocol.giopmsgheaders.RequestMessage_1_2.callback(RequestMessage_1_2.java:214)
at com.sun.corba.ee.impl.protocol.CorbaMessageMediatorImpl.handleRequest(CorbaMessageMediatorImpl.java:742)
at com.sun.corba.ee.impl.protocol.CorbaMessageMediatorImpl.dispatch(CorbaMessageMediatorImpl.java:539)
at com.sun.corba.ee.impl.protocol.CorbaMessageMediatorImpl.doWork(CorbaMessageMediatorImpl.java:2324)
at com.sun.corba.ee.impl.orbutil.threadpool.ThreadPoolImpl$WorkerThread.performWork(ThreadPoolImpl.java:497)
at com.sun.corba.ee.impl.orbutil.threadpool.ThreadPoolImpl$WorkerThread.run(ThreadPoolImpl.java:540)
Caused by: javax.transaction.RollbackException: Transaction marked for rollback.
at com.sun.enterprise.transaction.JavaEETransactionImpl.commit(JavaEETransactionImpl.java:473)
at com.sun.enterprise.transaction.JavaEETransactionManagerSimplified.commit(JavaEETransactionManagerSimplified.java:852)
at com.sun.ejb.containers.BaseContainer.completeNewTx(BaseContainer.java:5114)
... 23 more
Caused by: javax.persistence.PersistenceException: org.hibernate.HibernateException: A collection with cascade="all-delete-orphan" was no longer referenced by the owning entity instance: parents.Parent1.child
at org.hibernate.ejb.AbstractEntityManagerImpl.throwPersistenceException(AbstractEntityManagerImpl.java:614)
at org.hibernate.ejb.AbstractEntityManagerImpl$1.beforeCompletion(AbstractEntityManagerImpl.java:513)
at com.sun.enterprise.transaction.JavaEETransactionImpl.commit(JavaEETransactionImpl.java:435)
... 25 more
Caused by: org.hibernate.HibernateException: A collection with cascade="all-delete-orphan" was no longer referenced by the owning entity instance: parents.Parent1.child
at org.hibernate.engine.Collections.processDereferencedCollection(Collections.java:118)
at org.hibernate.engine.Collections.processUnreachableCollection(Collections.java:62)
at org.hibernate.event.def.AbstractFlushingEventListener.flushCollections(AbstractFlushingEventListener.java:241)
at org.hibernate.event.def.AbstractFlushingEventListener.flushEverythingToExecutions(AbstractFlushingEventListener.java:100)
at org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:50)
at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:1216)
at org.hibernate.impl.SessionImpl.managedFlush(SessionImpl.java:383)
at org.hibernate.ejb.AbstractEntityManagerImpl$1.beforeCompletion(AbstractEntityManagerImpl.java:504)
... 26 more
Finally tried to remove a single Child from collection and this case works. if I delete more than one Child or if the collection is empty does not work.
Any help you can give me to fix this situation is welcome. thanks.
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