CODEWITHSUNDEEP
javaspringhibernatejakarta-ee
paul
paul

Reputation: 13471

Hibernate save new one to one entities mapping

I´m having an issue trying to persist two new entities on database with a mapping between them

The Parent entity:

@OneToOne(cascade = CascadeType.MERGE, mappedBy = "conflictOfInterest") 
@XmlTransient
@JsonIgnore
@Getter 
@Setter 
private RequestForCorrection requestForCorrection;

The child entity:

@OneToOne()
@JoinColumn(name = "conflict_of_interest_id")
@JsonIgnore
@XmlTransient
@Getter
@Setter
private ConflictOfInterest conflictOfInterest;

When RequestForCorrection and ConflictOfInterest are ID null and I have 

requestForCorrection.setConflictOfInterest(conflictOfInterest)
save(requestForCorrection)

Hibernate is throwing the exception

Caused by: org.hibernate.TransientPropertyValueException: object references an unsaved transient instance - save the transient instance before flushing: com.greenvalley.etendering.domain.RequestForCorrection.conflictOfInterest -> com.greenvalley.etendering.domain.ConflictOfInterest
at org.hibernate.engine.spi.CascadingAction$8.noCascade(CascadingAction.java:380) ~[hibernate-core-4.2.7.Final.jar:4.2.7.Final]

I try change the cascade annotation of the parent to ALL and PERSIST without any success. I´m looking to save on cascade, so

save(conflictOfInterest)
requestForCorrection.setConflictOfInterest(conflictOfInterest)
save(requestForCorrection)

I don't consider a valid solution

Upvotes: 0

Views: 947

Answers (1)

Ekrifos
Ekrifos

Reputation: 26

When saving the Parent table hibernate it is trying to create the Child table that have a new reference to the parent. I suggest you 2 changes.

First, change the CascadeType from Merge to ALL if you want that all the changes in the parent go to the child

Second, add nullable = false to the Child to force the fk is added in the insert.

@OneToOne(cascade = CascadeType.ALL, mappedBy = "conflictOfInterest")
@XmlTransient
@JsonIgnore
@Getter
@Setter
private RequestForCorrection requestForCorrection;      

@OneToOne
@JoinColumn(name = "conflict_of_interest_id", nullable = false)
@JsonIgnore
@Getter
@Setter
private ConflictOfInterest conflictOfInterest;

Upvotes: 1

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