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我有兩個Hibernate對象的「報告」和「ReportContent」是與鍵「UUID」如何使用@OneToMany連接兩個表,而讓外鍵或連接表
CREATE TABLE Report(
Id BIGINT AUTO_INCREMENT PRIMARY KEY,
Uuid CHAR(32) BINARY NOT NULL UNIQUE
)
CREATE TABLE ReportContent(
Id BIGINT AUTO_INCREMENT PRIMARY KEY,
Uuid CHAR(32) BINARY NOT NULL,
Type INT NOT NULL
)
ALTER TABLE (ReportContent) ADD UNIQUE (Uuid, Type);
public class Report {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
@Column(name = "Id")
private long id;
@Column(name = "Uuid", columnDefinition = "char(32)", nullable = false, unique = true, updatable = false)
private String uuid;
@OneToMany
@JoinColumn(name = "Uuid")
private List<ReportContent> contents;
// setter and getter
}
public class ReportContent {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
@Column(name = "Id")
private long id;
@Column(name = "Uuid", nullable = false, columnDefinition = "char(32)", updatable = false)
private String uuid;
// setter and getter
}
我怎麼辦相關,選擇報告和休眠發送SQL獲取ReportContents與條件Report.Uuid = ReportContent.Uuid?
遺憾,它沒有作用。 – Robinson