JPAOverriddenAnnotationReader.java 文件源码

private MappedSuperclass getMappedSuperclass(Element tree, XMLContext.Default defaults) {
    if ( tree == null ) {
        return defaults.canUseJavaAnnotations() ? getPhysicalAnnotation( MappedSuperclass.class ) : null;
    }
    else {
        if ( "mapped-superclass".equals( tree.getName() ) ) {
            AnnotationDescriptor entity = new AnnotationDescriptor( MappedSuperclass.class );
            return AnnotationFactory.create( entity );
        }
        else {
            return null; //this is not an entity
        }
    }
}