I have two objects a user and a role which I make persistant using JDO and googles app engine. The two datatypes are related to each other as unowned many to many relationship. I tried to model that m
I have a java app running on JDK 1.6.0_17 on Linux.I\'m using ehcache 2.1.0, with a very simple ehcache.xml file:
I think that it makes sense for the entity variables to not be final as they are synchronized with the DB, but why for clas开发者_如何学编程s and methods ??Because persistence providers make proxies o
I wonder about a good way to have an EntityManager in each Bundle. Or how to use correctly JPA in an OSGi program.
Can anyone help me with following problem? I need to permanently save what I today have in arrays, to later use the data fo开发者_开发问答r calculations. I explain an example below.
I am in need of some further information. I am developing a small application which will be interacting with a PHP web application.The media server which we are incorporating with is extensible in Ja
I have a web application with some data in its datastore. I have just finished another version of it, in which i changed one of the persistent classes. Basically, there is a class called \"Node\" (whi
I am using Java SE and learning about the use of a persistence API (toplink-essentials) to manage entities in a Derby DB. Note: this is (distance learning) university work, but it is not \'homework\'
Using datastor开发者_如何学编程e framework of appengine, what\'s the pythonic way to make persistent a {}?You would only need to use the expando option if you intend to query on the individual diction
I am newbie with JPA. I\'m trying to run some sample code using JPA but I get the following exception:
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