Since JPA 2.2, AttributeConverter-s should support CDI injection (see also HHH-12135 Closed ). This doesn't seem to work when I rely on the converter being auto-applied, like this:

@Converter(autoApply = true)
public class MyAttributeConverter implements AttributeConverter<MyAttribute, String> {
    @Inject
    private MyUtils utils;

    ...
}

@Entity
public class MyEntity {
    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    private Integer id;

    private MyAttribute myAttribute;

    ...
}

This is basically Example 2: Auto-apply conversion of a basic attribute from the javadoc of @javax.persistence.Convert, so there should be nothing wrong with it. Yet, the utils field in MyAttributeConverter is null when the converter is invoked.

However, if I apply the converter explicitly:

    @Convert(converter = MyAttributeConverter.class)
    private MyAttribute myAttribute;

then it works just fine.

I'm no expert on JPA or CDI, but I believe auto-applied converters should support CDI as well.

As a reproducer, I'm attaching a simple Maven project which produces a WAR. I then deploy the WAR into WildFly 18.0.0.Final, which includes Hibernate ORM 5.3.12.Final (a reasonably up-to-date version).