[hibernate-issues] [Hibernate-JIRA] Commented: (HHH-7073) Audited entities with Many-to-Many relationships fail with NullPointerException
Clement Pang (JIRA)
noreply at atlassian.com
Wed Feb 22 01:10:09 EST 2012
[ https://hibernate.onjira.com/browse/HHH-7073?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=45580#comment-45580 ]
Clement Pang commented on HHH-7073:
-----------------------------------
Also, by the look of it, your commit in HHH-6661 should fix the problem (as least by looking at the debugger output). Is that in a particular snapshot release that we can try?
> Audited entities with Many-to-Many relationships fail with NullPointerException
> -------------------------------------------------------------------------------
>
> Key: HHH-7073
> URL: https://hibernate.onjira.com/browse/HHH-7073
> Project: Hibernate ORM
> Issue Type: Bug
> Components: envers
> Affects Versions: 4.1.0
> Reporter: Clement Pang
>
> The entity contains the following field:
> @ManyToMany(cascade = {CascadeType.PERSIST})
> @JoinTable(
> name = "Apples",
> joinColumns = {@JoinColumn(name = "storeId", nullable = false)},
> inverseJoinColumns = {@JoinColumn(name = "appleId", nullable = false)}
> )
> public Set<Apple> apples = new HashSet<Apple>();
> An exception is thrown when saving the entity:
> java.lang.NullPointerException
> at org.hibernate.envers.entities.EntitiesConfigurations.getToPropertyNames(EntitiesConfigurations.java:155)
> at org.hibernate.envers.event.BaseEnversEventListener.addCollectionChangeWorkUnit(BaseEnversEventListener.java:121)
> at org.hibernate.envers.event.BaseEnversEventListener.generateBidirectionalCollectionChangeWorkUnits(BaseEnversEventListener.java:90)
> at org.hibernate.envers.event.EnversPostInsertEventListenerImpl.onPostInsert(EnversPostInsertEventListenerImpl.java:60)
> at org.hibernate.action.internal.EntityIdentityInsertAction.postInsert(EntityIdentityInsertAction.java:149)
> at org.hibernate.action.internal.EntityIdentityInsertAction.execute(EntityIdentityInsertAction.java:102)
> In that particular method:
> public Set<String> getToPropertyNames(String fromEntityName, String fromPropertyName, String toEntityName) {
> Set<String> entityAndParentsNames = getEntityAndParentsNames(fromEntityName);
> Set<String> toPropertyNames = new HashSet<String>();
> for (RelationDescription relationDescription : getRelationDescriptions(toEntityName)) {
> String relToEntityName = relationDescription.getToEntityName();
> String mappedByPropertyName = relationDescription.getMappedByPropertyName();
> if (entityAndParentsNames.contains(relToEntityName) && mappedByPropertyName.equals(fromPropertyName)) {
> toPropertyNames.add(relationDescription.getFromPropertyName());
> }
> }
> return toPropertyNames;
> }
> mappedByPropertyName is null since RelationDescription can have null mappedByPropertyName when invoked at: EntityConfiguration
> public void addToManyMiddleRelation(String fromPropertyName, String toEntityName) {
> relations.put(fromPropertyName, new RelationDescription(fromPropertyName, RelationType.TO_MANY_MIDDLE,
> toEntityName, null, null, null, null, true));
> }
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