Not sure how you mapped it. As long as you didn't have any aggregate
functions in "derived" entities, you should be fine with implementing
things via ObjEntity inheritance.
Andrus
On Feb 5, 2008, at 1:48 PM, Alexander Lamb (dev) wrote:
Hoho... now I suppose I need to remove the derived DBEntities and
instead use class inheritance on the object entities side :-)
I ought to be able to do that without changing the code, only the
model ?
Alex
Le 5 févr. 08 à 12:35, Andrus Adamchik a écrit :
Aha... That must be it:
https://issues.apache.org/cayenne/browse/CAY-921
Andrus
On Feb 5, 2008, at 1:21 PM, Alexander Lamb (dev) wrote:
More info:
What happened is that we have class hierarchies in our models.
With M2, it works. With M3, it doesn't. What is also curious is
that the interface in the Modeler of M3 does not allow anymore to
have a DB Entity inherit from another DB Entity ?? I guess that is
the problem since reverting to an M2 version of our models and
running the exact same code with M2 works.
Alex
Le 5 févr. 08 à 12:05, Alexander Lamb (dev) a écrit :
Ok, I will try.
Maybe the model but I maybe did something stupid: I opened the
models with the M3 modeler then saved them. Still the crash. Then
reverted to M2 (without changing the models). Again a crash....
which seems to tell us it is not M3.
But: are the model formats compatible between M2 and M3 ? In
other words, can I continue to work with M3 modeler whatever
version M2 or M3 of Cayenne I am using?
Thanks,
Alex
Le 5 févr. 08 à 10:13, Andrus Adamchik a écrit :
On Feb 5, 2008, at 11:02 AM, Alexander Lamb (dev) wrote:
Caused by: java.lang.NullPointerException
at
org
.apache
.cayenne
.map
.AshwoodEntitySorter.fillInMetadata(AshwoodEntitySorter.java:265)
at
org
.apache
.cayenne
.map.AshwoodEntitySorter._indexSorter(AshwoodEntitySorter.java:
98)
at
org
.apache
.cayenne
.map
.AshwoodEntitySorter.sortDbEntities(AshwoodEntitySorter.java:137)
Did anything change in your mapping since the Cayenne update?
The easiest way debug the NPE is to put a breakpoint at the line
above and see why "join.getTarget()" returns null. I suspect a
mapping problem, but don't fully exclude a possibility of a
Cayenne bug.
Andrus
