Tag Archives: Database

Mapping collection of simple type in JPA using @ElementCollection

Posted on February 11, 2018 by Robert Piasecki

JPA framework provides good support for mapping collections of value types. The value types can be either simple types like Integer or String, or custom embeddable types. In this short post I would like to present two most popular mappings … Continue reading →

Posted in Database, JPA | Tagged , , | Leave a comment

Primary key generation in JPA

Posted on August 2, 2014 by Robert Piasecki

Generation of primary key values is a very important functionality of relational database management systems. The main idea is to let RDBMS automatically calculate and assign primary key value to the row being inserted into the database table. This not … Continue reading →

Posted in Database, Java, Java EE, JPA | Tagged , , , | 4 Comments