Hibernate Tip: How to select a specific subclass from an inheritance hierarchy

When you model an inheritance hierarchy in your domain model, you sooner or later want to use it in a query. That’s when I often get a question like the following one: I have a many-to-many association to the superclass of an inheritance hierarchy. How can I select only a certain subclass from that hierarchy?
You can use a TYPE expression in your JPQL query to limit your query result to one or more subclasses.

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