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One of the issues to get your head around in both Hibernate and JPA is how to handle detached entities. In Hibernate one has to deal with the session object and in JPA it is called the persistence context. The most common solution is to re-attach your entities to a new persistence context when they need to be flushed to the database again. In JPA one uses the merge function to attached a detached object to the current persistence context. Lets say we have a person object and a company object, with a person belonging to a company.
Welcome to this tutorial on Blueprint. It will give you a thorough intro to what you can do with the framework, and a few notes on what you shouldn’t do with it. Let’s get started. About Blueprint Blueprint is a CSS framework, designed to cut down on your development time.