datanucleus

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In JDO/DataNucleus can I query for a Joda-Time DateTime object?

I see that开发者_开发技巧 DataNucleus supports org.joda.DateTime http://www.datanucleus.org/products/accessplatform_2_2/jdo/types.html[详细]

2023-01-24 13:24 分类：问答
@Unique doesn't have any effect in DataNucleus w/ NeoDatis

Using JDO / DataNucleus / NeoDatis datastore I added @Unique to a field of a persistable object, however I am allowed to create multiple objects which violate the unique constraint. The docs for Data[详细]

2023-01-23 22:59 分类：问答
JDO not retrieving/persisting a collection

I have the following data model class defined: @PersistenceCapable public class TestSerializableModelObj {[详细]

2023-01-22 05:04 分类：问答
App Engine datastore get number of childs from multiple parents

I\'m using the datastore of the Google App Engine (DataNucleus). I have two classes, one Chat and one Ratin开发者_C百科g. A chat can be rated more then ones so I created an one-many relationship by ad[详细]

2023-01-21 05:52 分类：问答
Using ORDER By with DataNucleus Rest API and GAE Datastore

I\'m successfully pulling back my objects however, I would like for them to already be sorted by a field in the object.[详细]

2023-01-21 05:36 分类：问答
datanucleus enhancer & javaw: "the parameter is incorrect"

I\'m on windows XP using eclipse and the datanucleus enhancer for a gwt + gae app.When I run the enhancer, I get an error:[详细]

2023-01-21 01:31 分类：问答
SQL Server 2005 and Datanucleus problem (ntext query)

Started getting errors with SQL Server 2005 This is the first time i\'ve tested our app with Datanucleus 2.x (last test was made with DN 1.x)[详细]

2023-01-19 04:41 分类：问答
java.lang.IllegalStateException, "Primary key for object of type Parent is null" except I can print it and its NOT null

I cant imagine any more methods to solve my problem.Here\'sa thread I made yesterday that describes the parent and child class in detail:https://stackoverflow.com/questions/3800450/many-to-one-unidire[详细]

2023-01-18 07:35 分类：问答
Why does JDOQL query using "matches" semantics only work with a literal?

I\'m trying to construct a JDOQL query (using datanucleus) that will search for m开发者_Python百科atches of a parent class based on criteria in an owned one-to-many child class.The query looks like th[详细]

2023-01-17 16:40 分类：问答
Problem persisting collection of interfaces in JDO/Datanucleus. "unable to assign an object of type.."

I am getting below error whilst trying to persist an object that has a collection of interfaces which I want to hold a couple of different types of objects. Seems to be happening almost randomly. Some[详细]

2023-01-17 16:15 分类：问答