ByThorben JanssenHibernate 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 post a comment below. Question: One of the readers of my article about using Hibernate with a MySQL database asked the following question: What is…
ByThorben JanssenHibernate 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 post a comment below. Question: I modeled a one-to-one association and activated lazy loading for it. But it doesn’t work. How do I tell…
ByThorben JanssenDatabases use the data types BLOB (binary large object) and CLOB (character large object) to store large objects, like images and very long texts. JPA and Hibernate provide two kinds of mappings for these types. You can choose if you want to: Materialize the LOB and map it to a byte[] or a String. This…
ByThorben JanssenMapping a primary key column with JPA and Hibernate is simple. You just need to add an attribute to your entity, make sure that its type and name match the database column, annotate it with @Column and you’re done. You can then use the primary key to load the entity, and Hibernate sets the primary…
ByThorben JanssenInternationalization not only affects the UI. If your application stores user-generated data and supports multiple languages, you also need a way to store different translations in your database. Typical examples are: market places that allow you to provide product descriptions in various languages, travel sites that offer trips to people all over the world and…