Try first to refresh your entity with entitymanagerObject.refresh(), and use
the return object for an update and then merge()
Am 14.06.2013 um 10:14 schrieb Sven Meier <s...@meiers.net>:
> It depends whether your working with detached or manages entities. Are you
> using OSIV?
>
> Sven
>
> On 06/14/2013 12:22 AM, Boris Brinza wrote:
>> Hello,
>> ok, i understand what my problem was,
>> I've update my code to use detachable model, quite easy refactorting.
>>
>> But it only postponed my problem to model onDetach, if i understand it right.
>> In pdf, "If we don't want to loose these changes we must explicitly persist
>> the entity before the detaching phase occurs."
>> So same problem with update of JPA enbtity. Insert is ok, just call
>> persist(), but update?
>>
>>
>>
>> On 06/13/2013 02:52 PM, Sven Meier wrote:
>>> Please read "9.6 Detachable models" of the Wicket Free Guide and come back
>>> with your questions.
>>>
>>> Sven
>>>
>>> On 06/13/2013 01:20 PM, Boris Brinza wrote:
>>>> Hello to all,
>>>> I have some fundamental issues with integration of jpa into wicket.
>>>> I develop web application using wicket 6 and JPA (eclipselink). Maybe next
>>>> question is more JPA oriented, but nevertheless:
>>>>
>>>> Lets say i have
>>>> class BaseDetailPage<T extens BaseDO> extends WebPage {
>>>> protected <T> dbEntity;
>>>>
>>>> }
>>>>
>>>> where dbEntity is instance of jpa persisted object.
>>>> BaseDetail page contains form for editing db entity using
>>>> CompoundPropertyModel.
>>>>
>>>> After i open detail page, entity is read from DB and page is displayed (if
>>>> edit button is pressed) or i create new instance of object (if add button
>>>> is pressed).
>>>>
>>>> After submit, if i want to add new record, everything is clear, i call
>>>> beginTX(), entityManager.persist(dbEntity), commitTX().
>>>>
>>>> But what about updating existing record?
>>>>
>>>> Every example for JPA shows some basic code like this:
>>>> beginTX()
>>>> dbObject.setXXX();
>>>> dbObject.setYYY();
>>>> commitTX()
>>>>
>>>>
>>>> But how to integrate this into wicket form using compound property model?
>>>> There is no such code for setting properties of db object, and jpa does
>>>> not have anything like entityManager.update().
>>>>
>>>> Now i use hack (by my opinion it';s a hack)
>>>>
>>>> beginTX()
>>>> entityManaget.detach(dbObject);
>>>> entityManager.merge(dbObject)
>>>> commitTX()
>>>>
>>>> but i am not sure, if it's right solution (or i'm almost sure it's not
>>>> right attitude)
>>>>
>>>> Is there any tutorial how to integrate these frameworks, or some simple
>>>> opensource project to check how it's solved?
>>>>
>>>> Thanks for any advice,
>>>> Boris
>>>>
>>>>
>>>>
>>>>
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>>>
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>>
>>
>
>
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