jdo

相关标签：javascript jquery android 多少钱 iPhone

Owned and Unowned relationship in JDO/GAE

I am trying to understand the concepts of owned and unowned relationships in JDO/GAE using the following model:[详细]

2023-04-01 05:01 分类：问答
How to use xjc generated classes with JDO

we have a collection of POJOs created by xjc that we need to be able to persist through JDO.How would you go about applying JDO annotations to the generate开发者_JS百科d classes?[详细]

2023-04-01 03:05 分类：问答
Maven GAE Plugin using JDO

I\'m using Maven GAE plugin with JDO, I started with jappstart example (https://github.com/tleese22/google-app-engine-jappstart/blob/master/pom.xml), but for some reason classes are not enhanced when[详细]

2023-03-31 02:50 分类：问答
JDO cannot map java.lang.Boolean for Apache Derby

This is my first time to use Eclipse and JDO. I have a problem when using Schema Tool in Eclipse to generate DDL.[详细]

2023-03-30 23:23 分类：问答
Retrieve TOP 1 on Google App Engine

How c开发者_如何学Can I retreive only one entity from a query on Google App Engine. I\'m creating a query for with ORDER BY and using:[详细]

2023-03-30 12:25 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
Retrieve JDO object without certain attribute

I have a class Post and within it I have a list of Reviews. Is it possible to retrieve a Post object without reviewList (or as an empty list)? Or maybe I should use some other model to achieve this.[详细]

2023-03-30 08:51 分类：问答
Using JDO with HRD on Google App Engine

To get consistent queries with HRD, we are told to use ancestor queries. i am using JDO, however i cannot find an example of an ancestor query using JDO Query.[详细]

2023-03-29 14:21 分类：问答
GAE JDO Query sometimes returns with newest persisted entities missing

I am trying to build a simple app using google app engine, with java and JDO. my application creates Sale objects and persists them to the datastore, once persisted i attempt to list using a query, A[详细]

2023-03-29 09:18 分类：问答
Key-Value data on GAE Datastore?

I read the documentation of GAE Datastore, but it\'s a bit.开发者_如何学Python. too hard for me to understand. What I need is just a simple key-value option. Any way to do this? I\'d prefer doing this[详细]

2023-03-28 14:15 分类：问答