Repeated column in mapping for entity

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Repeated column in mapping for entity



When I persist a WorkAction I need to store the FK Id for WorkflowInstance


WorkAction


WorkflowInstance


WorkAction wa = new WorkAction();
wa.setWorkflowInstance(wfi);
waDao.persist(wa);



However in the table for WorkAction the fk column, workflow_instance_id winds up being null.


WorkAction


workflow_instance_id



Turns out in the Entity for WorkAction I had mapped WorkflowInstance using , insertable = false, updatable = false like this


WorkAction


WorkflowInstance


, insertable = false, updatable = false


@ManyToOne
@JoinColumn(name = "workflow_instance_id", referencedColumnName = "workflow_instance_id", insertable = false, updatable = false)
private WorkflowInstance workflowInstance;



When I removed it, I got the Repeated column in mapping for entity: WorkAction column: workflow_instance_id But in the WorkAction entity I didn't see workflow_instance_id mapped again , i.e. I did not have private Long workflow_instance_id;


Repeated column in mapping for entity: WorkAction column: workflow_instance_id


WorkAction


workflow_instance_id


private Long workflow_instance_id;



But then I noticed in my WorkAction entity, I had mapped a WorkflowInstancePlayer using a formula which referenced workflow_instamce_id


WorkAction


WorkflowInstancePlayer


workflow_instamce_id


@ManyToOne(fetch = FetchType.LAZY)
@JoinColumnsOrFormulas( @JoinColumnOrFormula(formula = @JoinFormula(value = "(SELECT a.role_class_id FROM WF_WORK_ACTION_CLASS a WHERE a.work_action_class_id = work_action_class_id)", referencedColumnName = "role_class_id")),
@JoinColumnOrFormula(column = @JoinColumn(name = "workflow_instance_id", referencedColumnName = "workflow_instance_id", insertable=false, updatable=false)) )
private WorkflowInstancePlayer player;



Even after adding insertable=false, updatable=false to that mapping I still have the issue. When I comment out the @JoinColumnsOrFormulas I can remove the insertable=false, updatable=false on the WorkflowInstance and the workflow_instance_id is then not null but I then lose my WorkflowInstancePlayer


insertable=false, updatable=false


@JoinColumnsOrFormulas


insertable=false, updatable=false


WorkflowInstance


WorkflowInstancePlayer



How do I get around this?





Is there a specific reason to not adding private Long workflow_instance_id to WorkAction class and use it for persisting?
– Ghokun
Nov 30 '15 at 22:18





Yes, because that would also produce the Repeated column in mapping for entity error.
– jeff
Nov 30 '15 at 22:24





It would not if you add insertable=false, updatable=false to your joined properties.
– Ghokun
Nov 30 '15 at 22:27





When I simple add private Long workflow_instance_id; to Class WorkAction, right above the WorkflowInstance @manyToOne mapping, it won't compile, repeated column.
– jeff
Nov 30 '15 at 22:31





if I do @Column(insertable=false, updatable=false) private Long workflow_instance_id; it compiles but I'd image when I wa.setWorkflow_instance_id(wfi.getWorkflow_instance_id()); I'd image the persist will still produce null for the fk. I'll test right now. But where am I supposed to add insertable=false, updatable=false?
– jeff
Nov 30 '15 at 22:35




3 Answers
3



Use insertable = false, updatable = false in your @JoinColumn annotations.


insertable = false, updatable = false


@JoinColumn


public class WorkAction

@Column(name="workflow_instance_id")
private Long workflow_instance_id;

@ManyToOne
@JoinColumn(name = "workflow_instance_id", referencedColumnName = "workflow_instance_id", insertable = false, updatable = false)
private WorkflowInstance workflowInstance;

@ManyToOne(fetch = FetchType.LAZY)
@JoinColumnsOrFormulas(
@JoinColumnOrFormula(formula = @JoinFormula(value = "(SELECT a.role_class_id FROM WF_WORK_ACTION_CLASS a WHERE a.work_action_class_id = work_action_class_id)", referencedColumnName = "role_class_id")),
@JoinColumnOrFormula(column = @JoinColumn(name = "workflow_instance_id", referencedColumnName = "workflow_instance_id", insertable=false, updatable=false)) )
private WorkflowInstancePlayer player;



UPDATE



I reproduced the same case as you did. I think this is some kind of bug because isUpdatable and isInsertable returns true.


isUpdatable


isInsertable


protected void checkColumnDuplication(Set distinctColumns, Iterator columns)
throws MappingException
while ( columns.hasNext() )
Selectable columnOrFormula = (Selectable) columns.next();
if ( !columnOrFormula.isFormula() )
Column col = (Column) columnOrFormula;
if ( !distinctColumns.add( col.getName() ) )
throw new MappingException(
"Repeated column in mapping for entity: " +
getEntityName() +
" column: " +
col.getName() +
" (should be mapped with insert="false" update="false")"
);





protected void checkPropertyColumnDuplication(Set distinctColumns, Iterator properties)
throws MappingException
while ( properties.hasNext() )
Property prop = (Property) properties.next();
if ( prop.getValue() instanceof Component ) //TODO: remove use of instanceof!
Component component = (Component) prop.getValue();
checkPropertyColumnDuplication( distinctColumns, component.getPropertyIterator() );

else




Source code is from org.hibernate.mapping.PersistentClass


org.hibernate.mapping.PersistentClass





I appreciate you trying to help, but this produces the repeated column mapping issue. Technically, this is really no different than what I have been trying when I did not have insertable = false, updatable = false on the JoinColumn for WorkflowInstance. Something is fishy with the crazy JoinColumnsOrFormulas because I don't have this issue with other "normal" entities
– jeff
Nov 30 '15 at 23:17





I almost have same class structure but can't check right now. I will post tomorrow again if you haven't figured it out yet.
– Ghokun
Nov 30 '15 at 23:18





so what does your update mean? Am I screwed? So Hibernate is ignoring the insertable = false, updatable = false on the JoinColumnOrFormula??
– jeff
Dec 1 '15 at 14:18





insertable = false, updatable = false on JoinColumnOrFormula is somehow true everytime but not for JoinColumn alone.
– Ghokun
Dec 1 '15 at 14:41





I guess it's a bug. What version are you using. me hibernate-core: 4.3.8.Final. I have a bunch other hibernate Dependencies listed in my POM.xml which varying version numbers. I wonder if I am using the latest and greatest and whether cleaning up my dependencies would get me a version of hibernate which works with @JoinColumnOrFormula
– jeff
Dec 1 '15 at 15:38



Work Around



The only way to get this Entity to compile with a column name (workflow_instance_id) in two mappings, one being a standard @JoinColumn and the other @JoinColumn within a @JoinColumnOrFormula, and be able to persist this entity with the workflow_instance_id field populated was to keep insertable = false, updatable = false on my WorkflowInstance mapping without the formula


@ManyToOne
@JoinColumn(name = "workflow_instance_id", referencedColumnName = "workflow_instance_id", insertable = false, updatable = false)
private WorkflowInstance workflowInstance;



do a normal entity manager persist on the entity


WorkAction wa = new WorkAction();
//wa.setWorkflowInstance(wfi); is ignored
wa.set other stuff;
waDao.persist(wa);



then do a NativeQueryUpdate to populate the workflow_instance_id column.


waDao.updateWfi(wa.getWfi_work_item_action_id(), wfi.getWorkflow_instance_id());


public void updateWfi(Long wfi_work_item_action_id, Long workflow_instance_id) {
Query query = em.createNativeQuery("UPDATE table_name SET workflow_instance_id = :workflow_instance_id WHERE wfi_work_item_action_id = :wfi_work_item_action_id");



The columns with insertable=false and updatable=false, has to be specified first then JoinFormula.


@ManyToOne(fetch = FetchType.LAZY)
@JoinColumnsOrFormulas(
@JoinColumnOrFormula(column = @JoinColumn(name = "workflow_instance_id", referencedColumnName = "workflow_instance_id", insertable=false, updatable=false)),
@JoinColumnOrFormula(formula = @JoinFormula(value = "(SELECT a.role_class_id FROM WF_WORK_ACTION_CLASS a WHERE a.work_action_class_id = work_action_class_id)", referencedColumnName = "role_class_id"))
)
private WorkflowInstancePlayer player;



I was also facing similar issue, now the error is gone.






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