I have a problem getting this JPA query to work on MS SQL Server 2008. The background is as follows: Users create jobs for clients, of which there a开发者_StackOverflow中文版re many. I am displaying
I\'m trying to set a parameter in my query, for example: select * from Cars where Cars.color NOT IN (:color_params)
the problem is as follows: We\'re using hibernate with 开发者_JS百科annotations as O/R Mapper. Some @Column annotations look like:
While I try to save top level entity (using JPA), do I need to get the ManyToOne mapped entity freshly from database and set it or cannot I just set Id (of manyToOne mapped entity and save top level e
I would like to know if there is anyway I can do something similar to the following 开发者_如何学Cthing with JPA:
I\'m having a kind of dummy problem, I need to make a @NamedQuery with a join with other table, some simple thing.
I have been trying to reason about the best way to handle whether it is generally good practice to implement hashcode and equals o开发者_如何学Pythonn entities (I mean entity in the general sense but
I try to delete an item from a hash map with hibernate. Here is my config on the collection: @Cache(usage = CacheConcurrencyStrategy.READ_WRITE)
I\'m deleting entities from a table with a one to many relationship to the same entity (representing node hierarchy). If I make the xincoCoreNodeId relationship a cascade all it works but I don\'t wan
I placed this question in Google groups for gae java (http://groups.google.com/group/google-appengine-java/browse_thread/thread/85dc9f10d7e12a3), but sometimes it takes a week for someone to bother an
加载中,请稍侯......