// parent side
	@OneToMany(
			cascade = CascadeType.ALL,
			fetch = FetchType.LAZY,
			mappedBy = "parent",
			orphanRemoval = true
	)
	// do not use a foreign key constraint, because it's not compatible with partitioning.
	// needed on both sides of the relationship, but it doesn't look like jpa allows you
	// to use @javax.persistence.ForeignKey on the mappedBy side, so we use deprecated hibernate
	// version.
	@org.hibernate.annotations.ForeignKey(name = "none")
	public List<Child> getChildren() {
		return _children;
	}

// child side
	@ManyToOne
	@JoinColumn(
			// do not use a foreign key constraint, because it's not compatible with partitioning
			foreignKey = @ForeignKey(value = ConstraintMode.NO_CONSTRAINT)
	)
	public Parent getParent() {
		return _parent;
	}