how to add jpa support for existing maven project i tried project-->configure--> convert to jp开发者_JAVA技巧a project(there is no this option)
I have a domain object that stores some metadata and some raw bytes. This is used for storing binary objects such as PDF documents and images.
I have a JPA project connected to a MySQL database where my entity object is mapped to a table with a constraint on 2 columns. That is:
Lets say we have this JPA-annotated class, with a property of type List. This code is currently working fine.
We\'re using jpa with Toplink as an implementation and came up with a problem about refreshing lists of entities.
Using a ClassPathXmlApplicationContext object I want to get the same EntityManager that is being used by other parts of the app开发者_如何学JAVA which get it injected via:
I have an application on Glassfish v2 ( on Mac OS 10.5.8 and Java 1.6 ) that uses JavaDB and Toplinks that comes with the Glassfish bundle. Everything works fine.
I am not certain what I am doing wrong, but I have a class that has a class within it, so when I save the Skill class the user class also gets created, so when I do the join and I want to pull everyth
I have the entity classes below.When a user first signs up, only the username and password are supplied, so the list of accounts (think profiles) is empty.Later, when they add an account, the user obj
I\'m trying to configure Spring+Hibernate+JPA for work with two databases (MySQL and MSSQL). My datasource-context.xml:
加载中,请稍侯......