[Hibernate-JIRA] Created: (HHH-4474) NullPointerException in AuditEventListener#generateBidirectionalCollectionChangeWorkUnits onPostInsert...
4:16 a.m.
NullPointerException in AuditEventListener#generateBidirectionalCollectionChangeWorkUnits
onPostInsert...
---------------------------------------------------------------------------------------------------------
Key: HHH-4474
URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-4474
Project: Hibernate Core
Issue Type: Bug
Components: envers
Environment: <version>1.2.0.GA-hibernate-3.3</version>
Reporter: Daniel Bleisteiner
Attachments: stacktrace.txt
I get the exception attached as file after creating an entity. The mapping works on my
development machine... a test server throws that exception. I've tried to search for
eny differences in the tables but can't find any so far. The last time a similar error
occured I was missing the versioned entry in the version table - these have been filled
with the lowest revision available (the same way on my machine as on the test server). So
I'm stuck... I have no access to the related source either... maybe this would help!
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4:25 a.m.
New subject: [Hibernate-JIRA] Commented: (HHH-4474) NullPointerException in AuditEventListener#generateBidirectionalCollectionChangeWorkUnits onPostInsert...
[
http://opensource.atlassian.com/projects/hibernate/browse/HHH-4474?page=c...
]
Daniel Bleisteiner commented on HHH-4474:
-----------------------------------------
1.2.1.GA has the same result...
Caused by: java.lang.NullPointerException
at
org.hibernate.envers.event.AuditEventListener.generateBidirectionalCollectionChangeWorkUnits(AuditEventListener.java:112)
at
org.hibernate.envers.event.AuditEventListener.onPostInsert(AuditEventListener.java:152)
at
org.hibernate.action.EntityInsertAction.postInsert(EntityInsertAction.java:149)
NullPointerException in
AuditEventListener#generateBidirectionalCollectionChangeWorkUnits onPostInsert...
---------------------------------------------------------------------------------------------------------
Key: HHH-4474
URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-4474
Project: Hibernate Core
Issue Type: Bug
Components: envers
Environment: <version>1.2.0.GA-hibernate-3.3</version>
Reporter: Daniel Bleisteiner
Attachments: stacktrace.txt
I get the exception attached as file after creating an entity. The mapping works on my
development machine... a test server throws that exception. I've tried to search for
eny differences in the tables but can't find any so far. The last time a similar error
occured I was missing the versioned entry in the version table - these have been filled
with the lowest revision available (the same way on my machine as on the test server). So
I'm stuck... I have no access to the related source either... maybe this would help!
--
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4:31 a.m.
New subject: [Hibernate-JIRA] Commented: (HHH-4474) NullPointerException in AuditEventListener#generateBidirectionalCollectionChangeWorkUnits onPostInsert...
[
http://opensource.atlassian.com/projects/hibernate/browse/HHH-4474?page=c...
]
Daniel Bleisteiner commented on HHH-4474:
-----------------------------------------
The related entity is the following...
@Entity
@Table(name = Property.TABLE_NAME, uniqueConstraints = @UniqueConstraint(columnNames = {
"ENTITY_ID", "DESCRIPTOR_ID", "PROMOLEVEL_ID" }))
public class Property extends AbstractEntity {
private static final long serialVersionUID = 1L;
public static final String TABLE_NAME = "E_BUSINESS_PROPERTIES";
public static final String PROPERTY_ENTITY = "entity";
public static final String PROPERTY_DESCRIPTOR = "descriptor";
public static final String PROPERTY_PROMOLEVEL = "promolevel";
@Audited
@ManyToOne(cascade = { CascadeType.PERSIST }, optional = false)
private ProjectPropertyDescriptor descriptor;
@Audited
@ManyToOne(cascade = { CascadeType.PERSIST })
private ExtendedEntity entity;
@Audited
@ManyToOne(cascade = { CascadeType.PERSIST })
private AbstractPromotionLevel promolevel;
@Audited
@OneToMany(cascade = { CascadeType.ALL }, mappedBy = PropertyValue.PROPERTY_PROPERTY)
private List<PropertyValue> propertyValues = new
ArrayList<PropertyValue>();
// some accessors stripped!
}
NullPointerException in
AuditEventListener#generateBidirectionalCollectionChangeWorkUnits onPostInsert...
---------------------------------------------------------------------------------------------------------
Key: HHH-4474
URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-4474
Project: Hibernate Core
Issue Type: Bug
Components: envers
Environment: <version>1.2.0.GA-hibernate-3.3</version>
Reporter: Daniel Bleisteiner
Attachments: stacktrace.txt
I get the exception attached as file after creating an entity. The mapping works on my
development machine... a test server throws that exception. I've tried to search for
eny differences in the tables but can't find any so far. The last time a similar error
occured I was missing the versioned entry in the version table - these have been filled
with the lowest revision available (the same way on my machine as on the test server). So
I'm stuck... I have no access to the related source either... maybe this would help!
--
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1:46 p.m.
New subject: [Hibernate-JIRA] Commented: (HHH-4474) NullPointerException in AuditEventListener#generateBidirectionalCollectionChangeWorkUnits onPostInsert...
[
http://opensource.atlassian.com/projects/hibernate/browse/HHH-4474?page=c...
]
Jared Stehler commented on HHH-4474:
------------------------------------
Solution (posted on StackOverflow):
http://stackoverflow.com/questions/1764048/nullpointerexception-at-org-hi...
"I found the solution of my problem. So I'll share it for others.
The reference to the ExtendedEntity caused the problem. ExtendedEntity is an audited class
with different subclasses. But Envers does not automatically mark the subclass as audited.
The subclass must use the @Audited annotation for the class or any own fields to be
audited by Envers.
So a reference to any sublass of ExtendedEntity, that was audited, worked. In my case
I've referenced another subclass that was not audited by Envers - and so the
NullPointerException was thrown. By simply adding the @Audited annotation to that empty
extension of the ExtendedEntity class (no own properties... just a subclass to distinguish
another type of entity) and creation of the related versioning table in the database I
could close that gap and solve my problem.
Remember to mark subclasses with @Audited at any own field or the class itself - otherwise
they aren't audited and you might come across the exact same problem."
Seems like this might be something to address in the documentation?
NullPointerException in
AuditEventListener#generateBidirectionalCollectionChangeWorkUnits onPostInsert...
---------------------------------------------------------------------------------------------------------
Key: HHH-4474
URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-4474
Project: Hibernate Core
Issue Type: Bug
Components: envers
Environment: <version>1.2.0.GA-hibernate-3.3</version>
Reporter: Daniel Bleisteiner
Attachments: stacktrace.txt
I get the exception attached as file after creating an entity. The mapping works on my
development machine... a test server throws that exception. I've tried to search for
eny differences in the tables but can't find any so far. The last time a similar error
occured I was missing the versioned entry in the version table - these have been filled
with the lowest revision available (the same way on my machine as on the test server). So
I'm stuck... I have no access to the related source either... maybe this would help!
--
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3 comments
2 participants
participants (2)
-
Daniel Bleisteiner (JIRA) -
Jared Stehler (JIRA)