The post Implement your primary key as a Record using an IdClass appeared first on Thorben Janssen. There are various reasons to implement your own primary key representation. Your primary key may consist of multiple attributes. Or you’re following domain-driven design principles and want to use a custom type to add semantic meaning to it. Implementing a record and mapping it as an IdClass seems evident in these situations. A record is efficient, easy to implement, immutable... The pos...
