[hibernate-issues] [Hibernate-JIRA] Commented: (HHH-1852) @MappedSuperclass - PropertyAccessException
[
http://opensource.atlassian.com/projects/hibernate/browse/HHH-1852?page=c...
]
Bas van den Berg commented on HHH-1852:
---------------------------------------
I had the same error, but not in combination of MappedSuperClass.
I have a generic Tree object which is not hibernated,
public class Tree<T>
In my code I use a tree of words i.e. Tree<Word>. To be able to hibernate this, I
extended the Tree object, like this.
public class WordTree extends Tree<Word>
Then I added the mapping information on the methods i.e.
@AccessType("property")
Everything worked, but then I got an error at runtime error 'could not get a field
value by reflection getter of Word.id'
I found out that the targettype was incorrect in WordTree. After changing it, the error
went away.
@OneToMany(cascade={CascadeType.ALL}, fetch=FetchType.EAGER,
targetEntity=WordTree.class)
@JoinTable(name = "Child",
joinColumns = @JoinColumn(name="node_id"),
inverseJoinColumns = @JoinColumn(name="child_id")
)
public List<Tree<Word>> getChilds() {
return super.getChilds();
}
I hope this will give the experts some more clues on where to look.
@MappedSuperclass - PropertyAccessException
-------------------------------------------
Key: HHH-1852
URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-1852
Project: Hibernate3
Issue Type: Bug
Components: core
Affects Versions: 3.2.0.cr2
Environment: hibernate-3.2.0.cr2, hibernate-annotations-3.2.0.cr1,
hibernate-entitymanager-3.2.0.cr1
Reporter: David de Mingo
Attachments: src.zip
Caused by: org.hibernate.PropertyAccessException: could not get a field value by
reflection getter of org.endea.model.product.ProductAttribute.data
at
org.hibernate.property.DirectPropertyAccessor$DirectGetter.get(DirectPropertyAccessor.java:35)
at
org.hibernate.property.DirectPropertyAccessor$DirectGetter.getForInsert(DirectPropertyAccessor.java:40)
at
org.hibernate.tuple.AbstractEntityTuplizer.getPropertyValuesToInsert(AbstractEntityTuplizer.java:264)
...
Caused by: java.lang.IllegalArgumentException
at sun.reflect.UnsafeFieldAccessorImpl.ensureObj(UnsafeFieldAccessorImpl.java:37)
at sun.reflect.UnsafeObjectFieldAccessorImpl.get(UnsafeObjectFieldAccessorImpl.java:18)
at java.lang.reflect.Field.get(Field.java:357)
at
org.hibernate.property.DirectPropertyAccessor$DirectGetter.get(DirectPropertyAccessor.java:32)
... 41 morer
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