Skip to main content

Michael Bouschen

Michael Bouschen is a software engineer and architect at Tech@Spree in Berlin, Germany. He has a long time Java experience and is working in the area of persistence, mapping Java objects to a database. His main focus is on query languages including Java Persistence Query Language, EJBQL, JDOQL, SQL)and persistence metadata. Michael is member of the JDO expert group (JSR-12 and JSR-243).

 

Weblogs

The Java Persistence API (JPA) defines a query language that allows to define queries over entities and their persistent state. In this weblog I would like to point out what determines the type of...

The Java Persistence Query Language supports using relationships as defined in the object model in the query. The syntax of a relationship access expression is the same as in Java: a navigational...