spring data jpa 关联设计

MAP关联实体

//    @ElementCollection
    @OneToMany(cascade = {CascadeType.ALL})
//    @JoinColumn(name = "theme_id")
//    @MapKeyEnumerated(EnumType.STRING)
    @MapKeyColumn(name="selector")
//    @Column(name="block_style_id")
//    @JoinColumn(name = "block_style_id")
//    @CollectionTable(name="theme_block_style", joinColumns=@JoinColumn(name="my_id"))
//    @CollectionTable(name="theme_style")
    @JoinTable(name = "theme_style")
    private Map<String, BlockStyle> style = new HashMap<>();

MAP关联组件:

    @ElementCollection
//    @OneToMany(cascade = {CascadeType.ALL})
//    @JoinColumn(name = "theme_id")
//    @MapKeyEnumerated(EnumType.STRING)
    @MapKeyColumn(name="selector")
//    @Column(name="block_style_id")
//    @JoinColumn(name = "block_style_id")
//    @CollectionTable(name="theme_block_style", joinColumns=@JoinColumn(name="my_id"))
    @CollectionTable(name="theme_style")
//    @JoinTable(name = "theme_style")
    private Map<String, BlockStyle> style = new HashMap<>();