Mapping enum types with Hibernate Annotations

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孤独总比滥情好
孤独总比滥情好 2020-12-02 20:24

I have an enum type on my Java model which I\'d like to map to a table on the database. I\'m working with Hibernate Annotations and I don\'t know how to do that. Since the a

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  • 2020-12-02 20:57

    Do you need something else than the @Enumerated annotation? For example, the following enum:

    public enum MyEnum { 
        VALUE1, VALUE2; 
    }  
    

    Could be used and annotated like this:

    private MyEnum myEnum;
    @Column(name="myenum") 
    @Enumerated(EnumType.ORDINAL) 
    public MyEnum getMyEnum() { 
        return myEnum 
    }
    

    You can specify how the enum should be persisted in the database with the EnumType enum property of the @Enumerated annotation. EnumType.ORDINAL specifies that the enum will be persisted as an integer value. Here, myEnum set to VALUE1 would be persisted as 0, VALUE2 as 1, etc.

    The alternative is to use EnumType.STRING to specify that the enum will be persisted using the name of the enum value that the field is set to. So, applied to the previous example, setting the field myEnum to MyEnum.VALUE1 will persist as VALUE1, etc.

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