Re: Hibernate problem with OGNL
2013/3/26 Markus Demetz mar...@demetz.eu:
Hi,
I don't know if this is the right place to ask, but maybe there is anyone
who has experienced the same problem.
I'm using Struts2 (latest version), with Hibernate (latest version)
My database models all have getId().
I have situations, where the getId() method of my model class returns null
when navigating through OGNL e.g. when
calling s:property value=#user.gallery.id/.
Have you tried s:property value=user.gallery.id/ or s:property
value=%{user.gallery.id}/
When I call getId() from the method in my action class (e.g. UserListAction
iterating though users and calling user.getGallery().getId()), it returns
the id as expected.
If I do that first in my action class, then also my s:property.../ renders
the id as expected; so I thought about a lazy loading issue... all my
getId() methods are public, NOT final, and the Long id members are
protected.
I also tried to add a getMyId() method in the model which calls getId() from
within the same class.
getMyId() { return getId(); }
This surprisingly works and outputs the correct id when calling s:property
value=#user.gallery.myId/
You know, HHH uses all that magic with proxies, baytecode manipulation
and so ;-)
Regards
Ł
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Re: Hibernate problem with OGNL
Hi,
I have situations, where the getId() method of my model class returns null
when navigating through OGNL e.g. when
calling s:property value=#user.gallery.id/.
Have you tried s:property value=user.gallery.id/ or s:property
value=%{user.gallery.id}/
No luck :-(
I also tried with JSTL now without success.
It's very strange, since sometimes it works and then it reappears again.
I'll ask at the hibernate forum.
Regards,
Markus
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Re: Hibernate problem with OGNL
On 27/03/2013 10:42, Markus Demetz wrote:
Hi,
I have situations, where the getId() method of my model class returns
null
when navigating through OGNL e.g. when
calling s:property value=#user.gallery.id/.
Have you tried s:property value=user.gallery.id/ or s:property
value=%{user.gallery.id}/
No luck :-(
I also tried with JSTL now without success.
It's very strange, since sometimes it works and then it reappears again.
I'll ask at the hibernate forum.
Regards,
Markus
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I've seen this behavior on newly created instances. Hibernate doesn't
know the ID until the object is persisted to the DB. Hibernate tries to
delay this as long as possible to minimise DB writes. You would have
thought a request for the ID would force a DB write but Hibernate
doesn't seem to implement this behavior. If you want the ID you need to
force the DB write first.
Steve
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Re: Hibernate problem with OGNL
Hi,
I think I've found the problem.
I had javassist 3.17.1 (latest) in my project but hibernate 4.2 ships
with version 3.15.0
Now it seems to work!
Thank you, and sorry for misplacing my question here!
Regards,
Markus
Am 27.03.2013 17:23, schrieb Steve Higham:
On 27/03/2013 10:42, Markus Demetz wrote:
Hi,
I have situations, where the getId() method of my model class returns
null
when navigating through OGNL e.g. when
calling s:property value=#user.gallery.id/.
Have you tried s:property value=user.gallery.id/ or s:property
value=%{user.gallery.id}/
No luck :-(
I also tried with JSTL now without success.
It's very strange, since sometimes it works and then it reappears again.
I'll ask at the hibernate forum.
Regards,
Markus
-
To unsubscribe, e-mail: user-unsubscr...@struts.apache.org
For additional commands, e-mail: user-h...@struts.apache.org
I've seen this behavior on newly created instances. Hibernate doesn't
know the ID until the object is persisted to the DB. Hibernate tries
to delay this as long as possible to minimise DB writes. You would
have thought a request for the ID would force a DB write but Hibernate
doesn't seem to implement this behavior. If you want the ID you need
to force the DB write first.
Steve
-
To unsubscribe, e-mail: user-unsubscr...@struts.apache.org
For additional commands, e-mail: user-h...@struts.apache.org
-
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Re: Hibernate problem with OGNL
2013/3/27 Markus Demetz mar...@demetz.eu: I think I've found the problem. I had javassist 3.17.1 (latest) in my project but hibernate 4.2 ships with version 3.15.0 Now it seems to work! Yeah... this version is buggy :P I have tried update Ognl 3 to it but no luck ;-) Regards -- Łukasz + 48 606 323 122 http://www.lenart.org.pl/ - To unsubscribe, e-mail: user-unsubscr...@struts.apache.org For additional commands, e-mail: user-h...@struts.apache.org
