@OneToMany @ManyToOne 聯級刪除

商品對象SPU

    /**
     * 商品分類列表
     */
    @OneToMany(targetEntity = SPUCategoryRelation.class, cascade = CascadeType.ALL, mappedBy = "spu",orphanRemoval = true)
    private Collection<SPUCategoryRelation> spuCategoryItems;

    public SPU setSpuCategoryItems(Collection<SPUCategoryRelation> spuCategoryItems) {
        if (this.spuCategoryItems == null) {
            this.spuCategoryItems = spuCategoryItems;
            return this;
        }
        this.spuCategoryItems.clear();
        this.spuCategoryItems.addAll(spuCategoryItems);
        return this;
    }

商品分類 SPUCategoryRelation

    /**
     * 商品SPU
     */
    @ManyToOne
    @JoinColumn(name = "spu_id", nullable = false)
    private SPU spu;