It seems very clear that the JPA spec expects the following mapping to work:
{ noformat code:java }@Entity
static class Loan {
@Id
@Column(name = "LOAN_ID")
private Long id;
@OneToMany(cascade = CascadeType.ALL, mappedBy = "loan")
private List<Extension> extensions = new ArrayList<>();
}
@Entity
static class Extension {
@Id
@Column(name = "EX_LOAN_ID")
private Long exLoanId;
@Id
@Column(name = "EX_NO")
private Long exNo;
@Column(name = "EX_EXTENSION_DAYS")
private Long exExtensionDays;
@ManyToOne @MapsId
@JoinColumn(name = "EX_LOAN_ID")
private Loan loan;
}{ noformat code }
The workaround is to use {{insertable=false, updateable=false}} instead of {{@MapsId}}.
{ noformat code:java }@Entity
static class Loan {
@Id
@Column(name = "LOAN_ID")
private Long id;
@OneToMany(cascade = CascadeType.ALL, mappedBy = "loan")
private List<Extension> extensions = new ArrayList<>();
}
@Entity
static class Extension {
@Id
@Column(name = "EX_LOAN_ID")
private Long exLoanId;
@Id
@Column(name = "EX_NO")
private Long exNo;
@Column(name = "EX_EXTENSION_DAYS")
private Long exExtensionDays;
@ManyToOne
@JoinColumn(name = "EX_LOAN_ID",
insertable = false, updatable = false)
private Loan loan;
}{ noformat code } |
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