I am trying to understand the concepts of owned and unowned relationships in JDO/GAE using the following model:
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?
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
This is my first time to use Eclipse and JDO. I have a problem when using Schema Tool in Eclipse to generate DDL.
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:
I\'ve got a two classes that look like this: @PersistenceCapable(detachable=\"true\") @Inheritance(strategy=InheritanceStrategy.SUBCLASS_TABLE)
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.
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.
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
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
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