Hibernate Tips is a series of posts in which I describe a quick and easy solution for common Hibernate questions. If you have a question for a future Hibernate Tip, please leave a comment below. Question: How do you remove entities from the persistence context before performing bulk update operations with JPQL or SQL?
JPA and Hibernate provide different methods to persist new and to update existing entities. You can choose between JPA’s persist and merge and Hibernate’s save and update methods. It seems like there are 2 pairs of 2 methods that do the same. You can use the methods persist and save to store a new entity…
Hibernate Tips is a series of posts in which I describe a quick and easy solution for common Hibernate questions. If you have a question for a future Hibernate Tip, please leave a comment below. Question: I have to map a legacy table model with Hibernate. It contains a many-to-one association that uses a non-primary…
Updating a database seems easy as long as you’re the only developer on the team and don’t have to support multiple systems. But that changes dramatically when your team implements multiple features in parallel, uses different test databases and runs the application on one or more production servers. Updating all these databases, keeping track of…
Hibernate Tips is a series of posts in which I describe a quick and easy solution for common Hibernate questions. If you have a question for a future Hibernate Tip, please leave a comment below. Question: One of my entities represents an order which a customer placed in my online store. I would like to…