将枚举映射到hibernate中的字符串 [英] Mapping enum to string in hibernate

问题描述

我有一个类别Hibernate模型：

I've got a Category Hibernate model:

@Entity
@Table(name = "category")
public class Category {

    @Id
    @GeneratedValue(strategy=GenerationType.AUTO)
    @Column(name = "id")
    private long id;

    @Column(name = "type")
    private String type;

其中有一个字符串类型字段。另外我有一个代表一个类别的Java枚举：

which have a type string field. Also I've got a Java enum which represent a type of a category:

public enum CategoryType {
    INCOME, OUTCOME;
}

我想使用而不是字符串类型。 SQL在varchar参数中接受两个不同的值： CategoryIncome 或 CategoryOutcome 。我想让类别模型类接受一个枚举变量 - 并且在hibernate要求的时候将其映射到字符串。

which I would like to use instead of the string type. The SQL accepts two distinct values in the varchar parameter: either CategoryIncome or CategoryOutcome. I would like the Category model class to accept an enum variable - and map it somehow to the string whenever hibernate asks for it.

可以吗？

推荐答案

是的，是可以的。它应该是：

Yes, is possible. It should be:

@Enumerated(EnumType.STRING)
@Column(name = "category_type")
private CategoryType categoryType;

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