datanucleus

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JDO API with Datanucleus, is too noise while using ANT

I use ANT to run my JDO application example implemented using Datanucleus solution. When I run it I see a lot of INFO lines generated by Datanucleus. How can I get rid of them?[详细]

2023-02-05 08:39 分类：问答
Google App Engine Datanucleus enhencer

I have following class as superclass @Entity @MappedSuperclass public class Location implements LocationCapable {[详细]

2023-02-05 00:00 分类：问答
Publish failed using Ant publisher (Eclipse/datanucleus)

I am being driven mad the following (apparently hard) error from eclipse. Pu开发者_如何学Pythonblish failed using Ant publisher[详细]

2023-02-04 02:46 分类：问答
reference to ID instead of using foreign key in jdo?

I\'m using Datanucleus (jdo) with derby and I have a class MyClass. And this class has a variable of the type AnotherClass. I want to persist this variable.开发者_如何学Go When an instance of MyClass[详细]

2023-01-30 04:18 分类：问答
How can I only autoCreateSchema if database doesn't exist yet?

I have the following problem: I\'m using DataNucleus with JDO for my program. My jdoconfig.xml contains the following line:[详细]

2023-01-29 12:36 分类：问答
Datanucleus fetchgroup composite key

I am trying to map a class with composite key in datanucleus. The primary key is composed of two foreign keys and I can\'t seem to be able to include these foreign classes in the fetchgroup:[详细]

2023-01-29 06:32 分类：问答
Neodatis object DB / DataNucleus - How are indicies defined?

How do I define fields that I know I will be querying on to be indexed using Neodatis Object Database under DataNucleus?[详细]

2023-01-26 06:21 分类：问答
DataNucleus / NeoDatis - DB connection appears to close causing Persistable objects to be lost

Using DataNucleus I have a problem seen in the second INFO statement below (2nd entry from the bottom).[详细]

2023-01-25 04:51 分类：问答
In what situations does Query.execute() return null in DataNucleus

I have not added anything to my Database yet, thus the following query should return a result of 0 by my reckoning.[详细]

2023-01-24 18:01 分类：问答
What is the meaning of an "attached" object in JDO/DataNucleus?

The DataNucleus docs talk a lot about detached objects and what it means to be detached, but, for new users, they kind of skip over the simplistic: What does it mean to be attached?[详细]

2023-01-24 15:40 分类：问答