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 need to map a one-to-one association in which the primary key value of one entity is also used…
Joshua Bloch finally updated his popular book Effective Java for Java 7, 8 and 9. The previous edition was one of the most popular books among professional Java developers, and I couldn’t wait to finally read the updated 3rd edition. I got this book 2 weeks ago, and it more than fulfilled my expectations. It…
Which data type should you use to map a to-many association with Hibernate? Is it better to use a Set or a List? That’s a very common question, and most developers are surprised when they look at the documentation and find out that these are not the only options. You can also use a Bag…
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 saw JPQL queries using JOIN, LEFT JOIN and JOIN FETCH statement. What are the differences between these 3…
Hibernate is a very popular implementation of the Java Persistence API (JPA) standard. It acts as an additional layer on top of JDBC and enables you to implement a database-independent persistence layer. Hibernate provides an object-relational mapping implementation that maps your database records to Java objects and generates the required SQL statements to replicate all operations to the database. Let’s…