datanucleus_开发者

Salesforce's Database.com and Google App Engine via JPA

Currently i try to connect (via JPA/Datanucleus) with an application, hosted by Google App Engine, to the database service of database.com (Salesforce)[详细]

2023-04-12 06:08 分类：问答

InvocationTargetException: Plugin (Bundle) "org.datanucleus" is already registered

I am trying to follow the DataNucleus tutorial for JDO. I am using Maven and I have followed the instructions available here for the enhancer.[详细]

2023-04-11 17:47 分类：问答

Application Identity problem in Google App

I\'d like to use @Embeddable annotation. So, it suggest to define as Application Identity. I created as the Data Nucleus Documentation. But it still error.[详细]

2023-04-06 06:48 分类：问答

Does High Replication DB "eventually consistent" mean that detached JDO objects may not always contain updated object graph?

I have been using the Master/Slave database for previous App Engine projects but my new app is defined as High Replication Datastore (I don\'t believe this setting can be changed after it is defined).[详细]

2023-04-02 14:16 分类：问答

Datanucleus Enhancer not working with GAE + Scala + Eclipse

I am trying to evaluate using GAE + Scala for a little side project but I cannot seem to get past a problem with the Datanucleus enhancer.[详细]

2023-04-01 20:38 分类：问答

Datanucleus exception adding new column to hbase table

I am using DataNucleus with HBase. I had a table user. It contained 4 rows. Now I added a new column to the table. Now everytime I access any old user object which does not have this column DataNucleu[详细]

2023-04-01 19:02 分类：问答

Hbase performance

I am using Spring + Datanucleus JDO + Hbase. Hbase is on a fully distributed mode with two nodes. I am facing serious performance issues here.[详细]

2023-03-31 14:08 分类：问答

Datanucleus changing column names?

I\'ve got a two classes that look like this: @PersistenceCapable(detachable=\"true\") @Inheritance(strategy=InheritanceStrategy.SUBCLASS_TABLE)[详细]

2023-03-30 09:05 分类：问答

If my model class imports HttpServletRequest, Datanucleus enhancer throws NoClassDefFoundError

Is there a Datanucleus setting to prevent the enhancer throwing an error if the HttpServletRequest class is imported by the model class that is being enhanced?[详细]

2023-03-28 02:22 分类：问答

Using datanucleus-rest with HBASE

I am trying to get the datanucleus REST service (2.0.1) running with HBASE (0.90.2). When accessing the servlet (registering work开发者_C百科s) however, I am getting a 503:[详细]

2023-03-26 18:27 分类：问答