[appengine-java] Updating a model class

2009-12-05 Thread randal
Hello.

I'm trying to make changes to my model class. I have a class called
Product that has a field category, which is a String.

public class Product {
...
private String category;
...
}

Now, I've decided that a Product can have different categories. I made
the field a List instead of a String. My problem is, when I check with
the data viewer, the changes don't get reflected. When I try to create
an entity through the data viewer, I still can't see the categories
field.

I've also tried just adding categories as new field such that the
model has both category and categories, but still no 'categories' when
I tried to create a new entity.

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[appengine-java] Re: updating object doesn't work anymore

2009-11-19 Thread randal
No not yet.

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[appengine-java] Re: updating object doesn't work anymore

2009-11-16 Thread randal
Anyone?

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[appengine-java] Service logic conflicts with transaction policy for entity groups

2009-08-26 Thread randal

Hello.

I'm trying to create a service method that encapsulates a particular
business logic. I want to make this feature transactional such that
its job is accomplished atomically(?). The problem is the service
logic involves accessing different entities that do not belong to the
same entity group which is not allowed in GAE.

At the moment, I've temporarily disabled transaction management to the
service method. However, I feel I'd need to manage transactions
eventually. I'm thinking of revising the model design but from how I
see it, the model classes are good as they are--unrelated by
ownership.

Btw, within the service logic is some methods that are transactional.
I'm using Spring framework to annotate transaction management.

Can anyone help me on how I can go about this?

Thanks.
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[appengine-java] Re: Object manager has been closed (GAE with Spring)

2009-08-24 Thread randal

On Aug 24, 4:44 am, objectuser kevin.k.le...@gmail.com wrote:
 Do you get it when you're trying to walk the graph on an object?  If
 you add that property to the defaultFetchGroup does it fix it?

I'm not sure I got that. What I do with the test, I call on a DAO
object that uses JdoTemplate to accomplish its task. Then, I invoke a
JdoTemplate from within my test case built around the same
PersistenceManagerFactory to help me check on the side effects of the
data access method I'm testing--asserting states, etc.
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[appengine-java] Re: Object manager has been closed (GAE with Spring)

2009-08-24 Thread randal

On Aug 25, 1:44 am, objectuser kevin.k.le...@gmail.com wrote:
 +1 to Wagner for a better way of determining the issue. :)

Yeah, that pretty much says it. If I'm not mistaken, JdoTemplate takes
the persistence manager from the OpenPersistenceManagerInViewFilter,
or any existing transaction. I'll check on this.
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