Hibernate Map ID automatically from field

Question

I have something similar to this:

@Entity
@Table(name = \"claim\", schema = \"test\")
public class Claim implements Serializable {

   @Id
   @GeneratedValue(str         


        

Answer 1

I have tried using the following mappings and from your comments it was apparent that Json object is populated correctly. I have noticed that the annotation @MapsId is the culprit.If you check the documentation of @MapsId annotation it says

Blockquote

The name of the attribute within the composite key * to which the relationship attribute corresponds. If not * supplied, the relationship maps the entity's primary * key

Blockquote

If you change @MapsId("Claim_idClaim") to @MapsId it will start persisting your entities.

import javax.persistence.*;

@Entity
@Table(name = "CLAIM")
public class Claim {

    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    @Column(name = "idClaim", unique = true, nullable = false)
    private Long idClaim;
    @Column(name = "notes")
    private String notes;

    @OneToOne(mappedBy = "claim", cascade = CascadeType.ALL, optional = false)
    private ClaimReturnInfo claimReturnInfo;

    public Long getIdClaim() {
        return idClaim;
    }

    public String getNotes() {
        return notes;
    }

    public void setNotes(String notes) {
        this.notes = notes;
    }


    public ClaimReturnInfo getClaimReturnInfo() {
        return claimReturnInfo;
    }

    public void setClaimReturnInfo(ClaimReturnInfo claimReturnInfo) {
        if (claimReturnInfo == null) {
            if (this.claimReturnInfo != null) {
                this.claimReturnInfo.setClaim(null);
            }
        } else {
            claimReturnInfo.setClaim(this);
        }
        this.claimReturnInfo = claimReturnInfo;
    }

}


package com.hiber.hiberelations;

import javax.persistence.*;

@Entity
@Table(name = "CLAIM_RETURN_INFO")
public class ClaimReturnInfo {

    @Id
    @Column(name = "Claim_idClaim")
    private Long childId;


    @Column(name = "DESCRIPTION")
    private String description;

    @MapsId
    @OneToOne(fetch = FetchType.LAZY)
    @JoinColumn(name = "Claim_idClaim")
    private Claim claim;

    public Long getChildId() {
        return childId;
    }

    public String getDescription() {
        return description;
    }

    public void setDescription(String description) {
        this.description = description;
    }

    public Claim getClaim() {
        return this.claim;
    }

    public void setClaim(Claim claim) {
        this.claim = claim;
    }
}