Thanks for the quick fix! On Thu, Feb 28, 2019 at 4:26 AM Nikita Timofeev <ntimof...@objectstyle.com> wrote:
> Hi Lon, > > Thanks for example. This turned out to be a bug introduced in 4.1. > Old Map based CayenneDataObject incorrectly serialized/deserialized > HashMap with it's values. And that explains why you saw those values > in your other case. > I've pushed fix for this to 4.1 branch and tested it with your test > application. Everything looks good now. > > On Thu, Feb 28, 2019 at 2:17 AM Lon Varscsak <lon.varsc...@gmail.com> > wrote: > > > > Also wondering, would this be a more appropriate post for the "dev" list > is > > or the "user" list appropriate/acceptable? > > > > -Lon > > > > On Wed, Feb 27, 2019 at 2:02 PM Andrus Adamchik <and...@objectstyle.org> > > wrote: > > > > > Hi Lon, > > > > > > We'll need to review this. All this used to worked before. > > > > > > Andrus > > > > > > > On Feb 26, 2019, at 1:00 PM, Lon Varscsak <lon.varsc...@gmail.com> > > > wrote: > > > > > > > > I always forget this part, I'm working off of 4.1.M3-SNAPSHOT > > > > > > > > On Tue, Feb 26, 2019 at 10:54 AM Lon Varscsak < > lon.varsc...@gmail.com> > > > > wrote: > > > > > > > >> Hey all, > > > >> > > > >> A few weeks ago I posted an email about a bug when serializing, and > I > > > >> never really looked much more in to it. However, I've now > encountered a > > > >> different issue if I'm using Map based data objects. If I have a > data > > > >> object, access a relationship, then serialize the object (and it's > > > >> DataContext) then deserialize the object and then try to access the > > > >> relationship again, I get this exception: > > > >> > > > >> java.lang.NullPointerException > > > >> > > > >> at org.apache.cayenne.util.RelationshipFault.isTransientParent( > > > >> RelationshipFault.java:69) > > > >> > > > >> at org.apache.cayenne.util.PersistentObjectList.isFault( > > > >> PersistentObjectList.java:76) > > > >> > > > >> at org.apache.cayenne.util.PersistentObjectList.resolvedObjectList( > > > >> PersistentObjectList.java:318) > > > >> > > > >> at org.apache.cayenne.util.PersistentObjectList.iterator( > > > >> PersistentObjectList.java:221) > > > >> > > > >> at com.smarthealth.cayennetest.App.main(App.java:53) > > > >> > > > >> > > > >> It appears that the relationshipOwner variable on the ToManyList > object > > > is > > > >> null (which is an invalid state). If I switch to field based > objects, I > > > >> have no exception and things work as expected. Also if I don't > access > > > the > > > >> relationship before serialization, then there is no error on > > > >> deserialization. > > > >> > > > >> You can download a test application here: > > > >> https://ds.varscsak.com:5001/d/f/473447192107950173 > > > >> > > > >> If you want to flip between Map based and Field based, you can > update > > > the > > > >> pom.xml file (you'll see that commented out in the build section) > and > > > >> trigger a build which should trigger the cgen task (doesn't always > work > > > for > > > >> me, so sometimes I just delete the _ files and that's enough to > trigger > > > a > > > >> rebuild). > > > >> > > > >> I'm pretty comfortable switching to field based objects, but feel > like > > > >> this should be addressed (or at least understood). > > > >> > > > >> Thanks for your time, > > > >> > > > >> Lon > > > >> > > > > > > > > > > -- > Best regards, > Nikita Timofeev >
