I'm not sure I see something wrong in your code, but then again you have
omitted a lot of stuff which could be cruicial.
Does nachweiseform have any components that show/update kunde?
What exactly do you mean by saying "after save it disappears"? Has it been
stored correctly in the database or is it wrong there too?
Have you tried to create a minimal case where you are setting kunde to an
object without having any wicket forms?
What is the value of kunde before saving to the db? If it is correctly set
then you likely have a problem with your mapping. If it's not correctly set
then something is wrong with your form.
On Sun, May 4, 2014 at 1:02 PM, Yahoo <hansheinrichbr...@yahoo.de> wrote:
> I have a suspicion: I have defened all dependencies with jpa or hibernate
> annotation.
> So I have also a lot of cicular dependencies, which sometimes make problem.
> I will give you 2 examples. one which is OK when I use AbstractEntityModel
> and on which makes problem, which is not set in the form through the Model
> but before.
>
> 1.
>
> the hibernatemodel:
>
> @IndexedEmbedded
> @ManyToOne(cascade=CascadeType.MERGE,fetch = FetchType.LAZY)
> @JoinColumn(name="NachAngNr",insertable=false, updatable=false)
>
> public Angebot getAngebot(){
> return this.angebot;
> }
>
> recursive part in Angebot:
>
> @XmlTransient
> @OneToMany(cascade={CascadeType.ALL},fetch=FetchType.LAZY)
> @JoinColumn(name="NachAngNr",nullable=false )
> public List<Nachweise> getNachweise() {
> return nachweise;
> }
>
> Angebot is set by DropDownChoice in the form
>
> private IModel<List<? extends Angebot>> makeChoicesAngebote = new
> AbstractReadOnlyModel<List<? extends Angebot>>()
> {
> @Override
> public List<Angebot> getObject()
> { List<Angebot> angebotelist=new ArrayList<Angebot>();
> Iterator angeboteiterator=
> angebotManager.getAngebote().iterator();
> while(angeboteiterator.hasNext()){
> Angebot angebot=(Angebot)angeboteiterator.next();
> if(angebot.getAngstatus().getId().longValue()==1)
> angebotelist.add(angebot);
> }
> return angebotelist;
> }
>
> };
> IChoiceRenderer<Angebot> angebotchoicerenderer=
> new IChoiceRenderer<Angebot>() {
>
> public Object getDisplayValue(Angebot angebot)
> {
> return angebot.getId();
> }
>
> public String getIdValue(Angebot angebot,int index)
> {
> return angebot.getId();
> }
> };
>
> final DropDownChoice<Angebot> angebote = new DropDownChoice<Angebot>("
> angebot",
> makeChoicesAngebote,angebotchoicerenderer);
>
>
> The recursive part is treated in NachweiseManagerImpl :
>
> public Nachweise saveNachweise(Nachweise nachweise) throws
> NachweiseExistsException {
>
> try {
> if(nachweise.getId()==null){
> System.err.println("xxxxxxxxxxxxxxxxxx Id=null");
>
> if(nachweise.getMitarbeiter()!=null) {
> }
> ======================= recursive Part for Kunde
> later =======================
> /* if(nachweise.getKunde()!=null) {
> System.err.println("xxxxxxxxxxxxxxxxxx Kunde");
> (nachweise.getKunde()).addNachweis(nachweise);
> }*/
> if(nachweise.getXtyp()!=null) {
> }
>
> if(nachweise.getAngebot()!=null) {
> nachweise.getAngebot().addNachweis(nachweise);
> System.err.println("xxxxxxxxxxxxxxxxxx Angebot");
> }
> ======================= recursive Part for Angebot
> =======================
> if(nachweise.getAngebot1()!=null) {
> nachweise.getAngebot1().addNachweis1(nachweise);
> }
>
> if(nachweise.getAngebot2()!=null) {
> nachweise.getAngebot2().addNachweis2(nachweise);
> }
>
>
> if(nachweise.getObjekt()!=null) {
> nachweise.getObjekt().addNachweise(nachweise);
> }
>
> if(nachweise.getPerson()!=null) {
> nachweise.getPerson().addNachweis(nachweise);
> }
> }
> return nachweiseDao.saveNachweise(nachweise);
> } catch (DataIntegrityViolationException e) {
> //e.printStackTrace();
> log.warn(e.getMessage());
> throw new NachweiseExistsException("Nachweise '" +
> nachweise.getId() + "' already exists!");
> } catch (JpaSystemException e) { // needed for JPA
> //e.printStackTrace();
> log.warn(e.getMessage());
> throw new NachweiseExistsException("Nachweise '" +
> nachweise.getId() + "' already exists!");
> }
> }
>
> Angebot is set by the DropDownChoice Nachweise is first inserted and can
> be changed.
>
> 2.
>
> the hibernateModel:
>
> //@XmlTransient
> @ManyToOne(cascade = CascadeType.MERGE,fetch=FetchType.LAZY)
> @JoinColumn(name="NachKundNr",insertable=false, updatable=false)
> public Kunde getKunde(){
> return this.kunde;
> }
>
> recursive Part for Kunde
>
>
> @XmlTransient
> @OneToMany(cascade={CascadeType.MERGE},fetch=FetchType.LAZY)
> @JoinColumn(name="NachKundNr",insertable=false, updatable=false )
> public List<Nachweise> getNachweise() {
> return nachweise;
> }
>
> Kunde ist set is set after before adding the form :
>
> final NachweiseForm nachweiseform=new NachweiseForm("form",model);
>
> if
> (!(pars.getPosition("nachweisnr")>=0&&pars.get("nachweisnr").toLong()>0))
> {
>
> if (pars.getPosition("kundennr")>=0&&pars.get("kundennr").toLong()>0)
> {
> Kunde kunde=kundeManager.get(new Long(pars.get("kundennr").
> toString()));
> System.err.println("====================== set Kunde reached");
> nachweiseform.getModelObject().setKunde(kunde);
> ======================= recursive Part for Kunde early set
> =======================
> nachweiseform.getModelObject().getKunde().addNachweis(
> nachweiseform.getModelObject());
> }
>
> }
>
> after opening the form you see the Id of Kunde
> after save it disappears.
>
> add(nachweiseform);
>
> When I set the recursive part later same result
>
> When I try to set the recursive part later I get the same result
>
> Am 04.05.2014 08:55, schrieb mscoon:
>
> Usually this is not a problem. But maybe you are doing something different
>> that the "usual". I think you will need to show us your code to help you
>> any further.
>>
>>
>> On Sun, May 4, 2014 at 9:12 AM, Yahoo <hansheinrichbr...@yahoo.de> wrote:
>>
>> It's the solution for all MANYTOONE-Fields defined in the Form
>>> I have a MANYTOONE-Field which is preset and not set in the Form.
>>> This field is not stored.
>>>
>>> Am 02.05.2014 01:24, schrieb mscoon:
>>>
>>> No you don't. The referenced objects will be serialized along with the
>>>
>>>> entity you are serializing and everything should work just fine.
>>>>
>>>>
>>>>
>>>>
>>>> On Thu, May 1, 2014 at 10:30 PM, Yahoo <hansheinrichbr...@yahoo.de>
>>>> wrote:
>>>>
>>>> Ok,thank you, that's it.
>>>>
>>>>> My Entity has a lot of MANYTOONE relationships which are set
>>>>> byDropDownChoices.
>>>>> In the case of a new entity, do I have to load all these Entities too
>>>>> and
>>>>> to save their ids ?
>>>>>
>>>>>
>>>>> Am 01.05.2014 15:01, schrieb mscoon:
>>>>>
>>>>> Heiner,
>>>>>
>>>>> You didn't tell us which dependency injection framework you you
>>>>>> using.
>>>>>>
>>>>>> If you're using Spring then simply use the @SpringBean annotation to
>>>>>> get a
>>>>>> reference to an EntityManager or a Dao.
>>>>>>
>>>>>> @SpringBean automatically works only for components so you'll also
>>>>>> need
>>>>>> to
>>>>>> add a call to injector to your model's constructor.
>>>>>>
>>>>>> public class MyModel implements IModel {
>>>>>>
>>>>>> @SpringBean
>>>>>> EntityManager entityManager;
>>>>>>
>>>>>> public MyModel() {
>>>>>> Injector.get().inject(this);
>>>>>> }
>>>>>>
>>>>>> ...
>>>>>> }
>>>>>>
>>>>>> This will take care of instantiating all @SpringBean annotated fields
>>>>>> as
>>>>>> well are handle their serialization/deserialization.
>>>>>>
>>>>>> Marios
>>>>>>
>>>>>>
>>>>>>
>>>>>> On Thu, May 1, 2014 at 3:42 PM, Yahoo <hansheinrichbr...@yahoo.de>
>>>>>> wrote:
>>>>>>
>>>>>> I tried the AbstractEntityModel <http://http://wicketinaction.
>>>>>>
>>>>>> com/2008/09/building-a-smart-entitymodel/> from Igor Vaynberg but I
>>>>>>> didn't get
>>>>>>> solved the @Dependency annotation from Vaynbergs salve.
>>>>>>> Is there another solution for the Hibernate integration for models.
>>>>>>>
>>>>>>> Best regards
>>>>>>> Heiner
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> ------------------------------------------------------------
>>>>>>> ---------
>>>>>>>
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>>>>> For additional commands, e-mail: users-h...@wicket.apache.org
>>>>>
>>>>>
>>>>>
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>>>
>>>
>>>
>
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