Hi all,
I'm working on a very simple setting from
openejb(3.1)/openjpa(1.2.1)/Postgres-8.3
I can retrieve a persistent object without problem, but if I attempt to
update a column to null, the value is not set.
The object basically has a min and max (Long) values.
Here is my abbreviated mapping:
Range {
Long min;
Long max;
@Column(name="min", nullable=true, updatable=true, insertable=true)
Long getMin() { return min;}
void setMin(Long a) { min=a;}
@Column(name="max", nullable=true, updatable=true, insertable=true)
Long getMax() { return max;}
void setMax(Long a) { max=a;}
}
when I run the following code:
... the object is disconnected and retrieved from probably another entity
manager.
Range r = ....
r.setMin(null);
entityManager.merge(r);
The update does not happen. But, if I update setMin(1) the update does take
place.
However if I run the following code things seem to behave:
Range r = ...
Range newRangeInThisTransaction = entityManager.find(Range.class,
r.getID());
newRangeInThisTransation.setMin(r.getMin());
newRangeInThisTransaction.setMax(r.getMax());
entityManager.merge(newRangeInThisTransaction);
any help would be greatly appreciated... If the problem is not obvious, I
will work on a small working example to show the problem.
-chris
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