On 12/03/2009, at 9:04 AM, Francisco Peredo wrote:
Hi!I really wonder why nobody has built something like Cayenne on
top of JPA,
I mean, it should be clear that Cayenne is higher level API that
offers a
lot of advantages..
Andrus has already spent a vast amount of time on moving Cayenne
Hi!I really wonder why nobody has built something like Cayenne on top of JPA,
I mean, it should be clear that Cayenne is higher level API that offers a
lot of advantages...I have another question: when using in Cayenne JPA
api... after you call entityManager.persist(object)... in what state is the
Nope, it does not have anything like it. JbossSeam does support nested
conversations, but since the underlying ORM (Hibernate) has no support for
anything like it, there is a kind of "impedance mismatch" that makes nested
conversations very unusable (even the Seam experts use nested conversation
o
Support for nested contexts: yes.
(Although I'm pretty sure that the newest versions of hibernate have
nested sessions? Haven't played with them, though).
Inheritance: someone who has worked on the issue will have to comment.
Various stops and starts have been made, and I haven't followed the
Hi!
Thanks a lot for your answers Robert and Mike, Robert was right, I was
looking for
short term/ temporary pk that can be apparently be obtained with
obj.getObjectId() for
cases where the object has not been persisted in to the database.
Seems like Cayenne could be a better fit for the way my
Hi Robert,
I was just guessing that since Francisco wanted to be able to display
the "temporary ID" on the user interface that there might be an
expectation (on the user's part?) of being able to write it down/etc
and query for it later. Like a tracking number of some kind. Either
way, I hope hi
Interesting to see the comments coming from a hibernate + cayenne user
(me) vs. an EOF + cayenne user (Mike). :)
Just wanted to follow up on the question and comment below:
Cayenne doesn't really have this, either. (Neither does EOF.) You
have to commit to have the PKs assigned (unless you
Comments inline ...
On Wed, Mar 11, 2009 at 4:06 PM, Francisco Peredo
wrote:
>
> Hi!
Hi Francisco.
> My first contact with an ORM was EOF... an ever since I have felt that
> nothing compares to it ;-).
I'm still doing WebObjects/EOF and have a decent idea about how the
two frameworks compa
On Mar 11, 2009, at 3/113:06 PM , Francisco Peredo wrote:
Hi!
My first contact with an ORM was EOF... an ever since I have felt that
nothing compares to it ;-).
The thing is, I have had to work with JPA/Hibernate for a few years
now...
and I feel it has some weaknesses I really do not like,
Hi!
My first contact with an ORM was EOF... an ever since I have felt that
nothing compares to it ;-).
The thing is, I have had to work with JPA/Hibernate for a few years now...
and I feel it has some weaknesses I really do not like, I am thinking about
"switching to cayenne" but first i would li
On Mar 11, 2009, at 11:01 AM, Νίκος Παράσχου wrote:
Is there any way to do something like the following:
try {
context.commitChanges();
}
catch(Some ValidationException thrown earlier) {
// Get failures list and print error messages.
}
This is how it should be done, and this
The following code works fine:
context.setValidatingObjectsOnCommit(false);
ValidationResult validationResult = new ValidationResult();
company.validateForInsert(validationResult);
if(validationResult.hasFailures()) {
List failures = validationResult.g
Is the following correct?
Looks about right. Also there's a few pre-canned classes implementing
ValidationFailure in the org.apache.cayenne.validation package that
can be used to build failures.
Or how can I retrieve the error message
from the validationResult when a ValidationException
Thank you Andrus,
Yes, I do not throw the exception myself. But, how am I going to handle
the exception thrown by Cayenne? Or how can I retrieve the error message
from the validationResult when a ValidationException is thrown, so that
I can print it in the GUI?
Is the following correct?
@Ove
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