Spring JPA：DDL Auto Gen在外键约束下未创建级联删除

Question

我在Passport和PassportType之间具有单向一对一关系。我在映射上声明了cascade = CascadeType.ALL。

为什么DDL自动生成的外键约束fkh9lgnglfbx8bnvnom6ovyx89没有ON DELETE CASCADE？我错过了什么？

我正在使用Spring Boot 2.2.2。

在数据库中创建的DDL（已编辑）

CREATE TABLE public.passport
(
    id bigint NOT NULL DEFAULT nextval('passport_id_seq'::regclass),
    country_id bigint,
    passport_type_id bigint,
    CONSTRAINT passport_pkey PRIMARY KEY (id),
    CONSTRAINT fkh9lgnglfbx8bnvnom6ovyx89 FOREIGN KEY (passport_type_id)
        REFERENCES public.passport_type (id) MATCH SIMPLE
        ON UPDATE NO ACTION
        ON DELETE NO ACTION,
    CONSTRAINT fkqwoht23ddjewoktst0da7j9q7 FOREIGN KEY (country_id)
        REFERENCES public.country (id) MATCH SIMPLE
        ON UPDATE NO ACTION
        ON DELETE NO ACTION
)

CREATE TABLE public.passport_type
(
    id bigint NOT NULL DEFAULT nextval('passport_type_id_seq'::regclass),
    description character varying(255) COLLATE pg_catalog."default",
    name character varying(255) COLLATE pg_catalog."default",
    CONSTRAINT passport_type_pkey PRIMARY KEY (id)
)

Passport.java

    @Entity
    public class Passport{
        @Id
        @GeneratedValue(strategy = GenerationType.IDENTITY)
        private Long id;

        @OneToOne(orphanRemoval=true, cascade=CascadeType.ALL)
        @JoinColumn(name="country_id")
        private Country country;

        @OneToOne(orphanRemoval=true, cascade=CascadeType.ALL)
        @JoinColumn(name="passport_type_id")
        private PassportType passportType;

        ...
}

PassportType.java

    @Entity
    public class PassportType{
        @Id
        @GeneratedValue(strategy = GenerationType.IDENTITY)
        private Long id;

        private String name; //values: Ordinary, Official, Diplomatic, Emergency, Collective, Family
        private String description;

...
    }

application.properties

# Database
spring.datasource.driverClassName=org.postgresql.Driver
spring.datasource.url= jdbc:postgresql://localhost:5432/visa
spring.datasource.username=
spring.datasource.password=
spring.datasource.initialization-mode=always 

# JPA
spring.jpa.properties.hibernate.dialect=org.hibernate.dialect.PostgreSQL9Dialect
spring.jpa.hibernate.ddl-auto=create-drop
spring.jpa.show-sql=true

Answer 1

I think in Postgres it works the other way round。检查PassportType表中是否有ON DELETE CASCADE。