Patrice DUROUX created OPENJPA-2805:
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Summary: unable to map self-related class with discrepancy between
the annotation and XML ORMs
Key: OPENJPA-2805
URL: https://issues.apache.org/jira/browse/OPENJPA-2805
Project: OpenJPA
Issue Type: Bug
Affects Versions: 3.0.0, 2.4.3
Reporter: Patrice DUROUX
Dear OpenJPA developers,
I've been beating around the bush for a long time and hesitating to repport a
bug until now.
My problem is a much larger project but it can be summed up in the following
situation. I would like to map such a class using an XML ORM onto a specific
relational schema (I mean to not have any preferred column names for the
corresponding join table).
{noformat}
public class Node2 implements Serializable {
private static final long serialVersionUID = -3038751343463495553L;
private Long id; public Long getId() {
return id;
} public void setId(Long id) {
this.id = id;
} private Node2 parent; public Node2 getParent() {
return parent;
} public void setParent(Node2 parent) {
this.parent = parent;
} private Set<Node2> childs; public Set<Node2> getChilds() {
return childs;
} public void setChilds(Set<Node2> childs) {
this.childs = childs;
} @Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + ((id == null) ? 0 : id.hashCode());
return result;
} @Override
public boolean equals(Object obj) {
if (this == obj)
return true;
if (obj == null)
return false;
if (getClass() != obj.getClass())
return false;
Node2 other = (Node2) obj;
if (id == null) {
if (other.id != null)
return false;
} else if (!id.equals(other.id))
return false;
return true;
} public Node2() {
this.childs = new LinkedHashSet<>();
}
}
{noformat}
I have a small Maven project with many persistence units as cases that are not
given me the expected result (working or not). But doing this, I am also facing
strange discrepancy between the annotation and the XML approaches (that are
supposed to be equivalent to me for case1 and case2 if I am not wrong).
Also I tried both using a runtime enhancement and a static one.
I am have a zip of a small Maven project with a JUnit test for the different
cases to check.
In the larger project, I created a view to solve part of the problem. But then
sure I cannot use the mapping to it to modify the persisted objects.
Regards,
Patrice
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