<p>출처1 :&nbsp;<a href="https://discourse.hibernate.org/t/hibernate-throws-org-hibernate-id-identifiergenerationexception-attempted-to-assign-id-from-null-one-to-one-property/1777/9">https://discourse.hibernate.org/t/hibernate-throws-org-hibernate-id-identifiergenerationexception-attempted-to-assign-id-from-null-one-to-one-property/1777/9</a></p><p>출처2 :&nbsp;<a href="https://kwonnam.pe.kr/wiki/java/jpa/one-to-one">https://kwonnam.pe.kr/wiki/java/jpa/one-to-one</a></p><p><br></p><p><br></p><p><br></p><p>개발환경 : spring boot 2.0.3.RELEASE&nbsp;/ hibernate&nbsp;5.2.17.Final / mariadb 10.x</p><p><br></p><p><br></p><p><br></p><p><br></p><p>아래와 같은 1:1 관계일 경우 하이버네이트 설정 방법</p><p><br></p><div style="color: rgb(212, 212, 212); background-color: rgb(30, 30, 30); font-family: Consolas, &quot;Courier New&quot;, monospace; font-size: 14px; line-height: 19px; white-space: pre;"><div><span style="color: #569cd6;">CREATE</span>&nbsp;<span style="color: #569cd6;">TABLE</span>&nbsp;<span style="color: #ce9178;">`table_user`</span>&nbsp;(</div><div>&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #ce9178;">`Id`</span>&nbsp;<span style="color: #569cd6;">BINARY</span>(<span style="color: #b5cea8;">16</span>)&nbsp;<span style="color: #569cd6;">NOT</span>&nbsp;<span style="color: #569cd6;">NULL</span>,</div><div>&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #ce9178;">`Account`</span>&nbsp;<span style="color: #569cd6;">VARCHAR</span>(<span style="color: #b5cea8;">32</span>)&nbsp;<span style="color: #569cd6;">NULL</span>&nbsp;DEFAULT&nbsp;<span style="color: #569cd6;">NULL</span>,</div><div>&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #ce9178;">`Password`</span>&nbsp;<span style="color: #569cd6;">VARCHAR</span>(<span style="color: #b5cea8;">64</span>)&nbsp;<span style="color: #569cd6;">NULL</span>&nbsp;DEFAULT&nbsp;<span style="color: #569cd6;">NULL</span>,</div><div>&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #569cd6;">PRIMARY</span>&nbsp;<span style="color: #569cd6;">KEY</span>&nbsp;(<span style="color: #ce9178;">`Id`</span>),</div><div>&nbsp;&nbsp;&nbsp;&nbsp;UNIQUE&nbsp;INDEX&nbsp;<span style="color: #ce9178;">`idx_user_account`</span>&nbsp;(<span style="color: #ce9178;">`Account`</span>),</div><div>)</div><div>COLLATE=<span style="color: #ce9178;">'utf8_general_ci'</span></div><div>ENGINE=InnoDB</div><div>;</div><br><div><span style="color: #569cd6;">CREATE</span>&nbsp;<span style="color: #569cd6;">TABLE</span>&nbsp;<span style="color: #ce9178;">`table_user_properties`</span>&nbsp;(</div><div>&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #ce9178;">`UserId`</span>&nbsp;<span style="color: #569cd6;">BINARY</span>(<span style="color: #b5cea8;">16</span>)&nbsp;<span style="color: #569cd6;">NOT</span>&nbsp;<span style="color: #569cd6;">NULL</span>,</div><div>&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #ce9178;">`Properties`</span>&nbsp;<span style="color: #569cd6;">INT</span>(<span style="color: #b5cea8;">11</span>)&nbsp;<span style="color: #569cd6;">NOT</span>&nbsp;<span style="color: #569cd6;">NULL</span>,</div><div>&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #569cd6;">PRIMARY</span>&nbsp;<span style="color: #569cd6;">KEY</span>&nbsp;(<span style="color: #ce9178;">`UserId`</span>),</div><div>&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #569cd6;">CONSTRAINT</span>&nbsp;<span style="color: #ce9178;">`fk_table_user_properties_table_user_id`</span>&nbsp;</div><div>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #569cd6;">FOREIGN&nbsp;KEY</span>&nbsp;(<span style="color: #ce9178;">`UserId`</span>)&nbsp;<span style="color: #569cd6;">REFERENCES</span>&nbsp;<span style="color: #ce9178;">`table_user`</span>&nbsp;(<span style="color: #ce9178;">`Id`</span>)&nbsp;</div><div>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #569cd6;">ON</span>&nbsp;<span style="color: #569cd6;">UPDATE</span>&nbsp;CASCADE&nbsp;<span style="color: #569cd6;">ON&nbsp;DELETE&nbsp;CASCADE</span></div><div>)</div><div>COLLATE=<span style="color: #ce9178;">'utf8_general_ci'</span></div><div>ENGINE=InnoDB</div><div>;</div><br></div><p><br></p><p><br></p><p><br></p><p><br></p><p>UserProperties 를 저장할 때 setUser와 setUserProperties를 사용하여 양쪽에 맵핑을 해준다 하더라도 키가 없다면서 안되더라.</p><p>아마도 hibernate 5.2.13 버전까지는 되고 5.2.14 버전부터 지원하지 않는 것 같다.(버전을 낮추지 않아서 해보진 않았다.)</p><p>결론적으로는 양쪽에 맵핑을 해주지 말고 UserProperties에 대해서 서비스를 별도로 만든 후 해당 서비스로 데이터를 조작하여야 한다</p><p><br></p><p><br></p><div style="color: rgb(212, 212, 212); background-color: rgb(30, 30, 30); font-family: Consolas, &quot;Courier New&quot;, monospace; font-size: 14px; line-height: 19px; white-space: pre;"><div>@<span style="color: #4ec9b0;">Entity</span></div><div>@<span style="color: #4ec9b0;">Getter</span></div><div>@<span style="color: #4ec9b0;">Setter</span></div><div>@<span style="color: #4ec9b0;">Table</span>(name&nbsp;=&nbsp;<span style="color: #ce9178;">"table_user"</span>)</div><div><span style="color: #569cd6;">public</span>&nbsp;<span style="color: #569cd6;">class</span>&nbsp;<span style="color: #4ec9b0;">User</span>&nbsp;<span style="color: #569cd6;">implements</span>&nbsp;<span style="color: #4ec9b0;">Serializable</span>&nbsp;{</div><br><div>&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #569cd6;">private</span>&nbsp;<span style="color: #569cd6;">static</span>&nbsp;<span style="color: #569cd6;">final</span>&nbsp;<span style="color: #4ec9b0;">long</span>&nbsp;<span style="color: #9cdcfe;">serialVersionUID</span>&nbsp;=&nbsp;<span style="color: #b5cea8;">111111111111111111L</span>;</div><br><div>&nbsp;&nbsp;&nbsp;&nbsp;@<span style="color: #4ec9b0;">Id</span></div><div>&nbsp;&nbsp;&nbsp;&nbsp;@<span style="color: #4ec9b0;">Column</span>(columnDefinition&nbsp;=&nbsp;<span style="color: #ce9178;">"BINARY(16)"</span>,&nbsp;name&nbsp;=&nbsp;<span style="color: #ce9178;">"Id"</span>)</div><div>&nbsp;&nbsp;&nbsp;&nbsp;@<span style="color: #4ec9b0;">GenericGenerator</span>(name&nbsp;=&nbsp;<span style="color: #ce9178;">"customUuid"</span>,&nbsp;</div><div>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;strategy&nbsp;=&nbsp;<span style="color: #ce9178;">"com.motolies.model.util.CustomUUIDGenerator"</span>)</div><div>&nbsp;&nbsp;&nbsp;&nbsp;@<span style="color: #4ec9b0;">GeneratedValue</span>(generator&nbsp;=&nbsp;<span style="color: #ce9178;">"customUuid"</span>)</div><div>&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #569cd6;">private</span>&nbsp;<span style="color: #4ec9b0;">byte</span>[]&nbsp;<span style="color: #9cdcfe;">id</span>;</div><br><div>&nbsp;&nbsp;&nbsp;&nbsp;@<span style="color: #4ec9b0;">Column</span>(name&nbsp;=&nbsp;<span style="color: #ce9178;">"Account"</span>,&nbsp;length&nbsp;=&nbsp;<span style="color: #b5cea8;">32</span>,&nbsp;unique&nbsp;=&nbsp;<span style="color: #569cd6;">true</span>)</div><div>&nbsp;&nbsp;&nbsp;&nbsp;@<span style="color: #4ec9b0;">NotNull</span></div><div>&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #569cd6;">private</span>&nbsp;<span style="color: #4ec9b0;">String</span>&nbsp;<span style="color: #9cdcfe;">username</span>;</div><br><div>&nbsp;&nbsp;&nbsp;&nbsp;@<span style="color: #4ec9b0;">JsonIgnore</span></div><div>&nbsp;&nbsp;&nbsp;&nbsp;@<span style="color: #4ec9b0;">Column</span>(name&nbsp;=&nbsp;<span style="color: #ce9178;">"Password"</span>,&nbsp;length&nbsp;=&nbsp;<span style="color: #b5cea8;">64</span>)</div><div>&nbsp;&nbsp;&nbsp;&nbsp;@<span style="color: #4ec9b0;">NotNull</span></div><div>&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #569cd6;">private</span>&nbsp;<span style="color: #4ec9b0;">String</span>&nbsp;<span style="color: #9cdcfe;">password</span>;</div><br><div>&nbsp;&nbsp;&nbsp;&nbsp;@<span style="color: #4ec9b0;">JsonManagedReference</span></div><div>&nbsp;&nbsp;&nbsp;&nbsp;@<span style="color: #4ec9b0;">OneToOne</span>(mappedBy&nbsp;=&nbsp;<span style="color: #ce9178;">"user"</span>,&nbsp;targetEntity&nbsp;=&nbsp;<span style="color: #9cdcfe;">UserProperties</span>.<span style="color: #9cdcfe;">class</span>,&nbsp;fetch&nbsp;=&nbsp;<span style="color: #9cdcfe;">FetchType</span>.<span style="color: #9cdcfe;">LAZY</span>)</div><div>&nbsp;&nbsp;&nbsp;&nbsp;@<span style="color: #4ec9b0;">PrimaryKeyJoinColumn</span></div><div>&nbsp;&nbsp;&nbsp;&nbsp;@<span style="color: #4ec9b0;">org.hibernate.annotations.Cascade</span>({&nbsp;<span style="color: #9cdcfe;">org</span>.<span style="color: #9cdcfe;">hibernate</span>.<span style="color: #9cdcfe;">annotations</span>.<span style="color: #9cdcfe;">CascadeType</span>.<span style="color: #9cdcfe;">SAVE_UPDATE</span></div><div>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;,&nbsp;<span style="color: #9cdcfe;">org</span>.<span style="color: #9cdcfe;">hibernate</span>.<span style="color: #9cdcfe;">annotations</span>.<span style="color: #9cdcfe;">CascadeType</span>.<span style="color: #9cdcfe;">LOCK</span>&nbsp;})</div><div>&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #569cd6;">private</span>&nbsp;<span style="color: #4ec9b0;">UserProperties</span>&nbsp;<span style="color: #9cdcfe;">userProperties</span>;</div><br><div>&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #569cd6;">public</span>&nbsp;<span style="color: #4ec9b0;">UserProperties</span>&nbsp;<span style="color: #dcdcaa;">getUserProperties</span>()&nbsp;{</div><div>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #6a9955;">//&nbsp;1대&nbsp;1&nbsp;관계이므로,&nbsp;항상&nbsp;데이터가&nbsp;있다고&nbsp;가정하기에&nbsp;null인&nbsp;경우&nbsp;만들어서&nbsp;준다</span></div><div>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #c586c0;">if</span>&nbsp;(<span style="color: #569cd6;">this</span>.<span style="color: #9cdcfe;">userProperties</span>&nbsp;!=&nbsp;<span style="color: #569cd6;">null</span>)</div><div>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #c586c0;">return</span>&nbsp;<span style="color: #569cd6;">this</span>.<span style="color: #9cdcfe;">userProperties</span>;</div><div>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #c586c0;">else</span></div><div>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #c586c0;">return</span>&nbsp;<span style="color: #c586c0;">new</span>&nbsp;<span style="color: #dcdcaa;">UserProperties</span>(<span style="color: #569cd6;">this</span>);</div><div>&nbsp;&nbsp;&nbsp;&nbsp;}</div><br><div>}</div><br><br><div>@<span style="color: #4ec9b0;">Entity</span></div><div>@<span style="color: #4ec9b0;">Getter</span></div><div>@<span style="color: #4ec9b0;">Setter</span></div><div>@<span style="color: #4ec9b0;">Table</span>(name&nbsp;=&nbsp;<span style="color: #ce9178;">"table_user_properties"</span>)</div><div>@<span style="color: #4ec9b0;">NoArgsConstructor</span></div><div><span style="color: #569cd6;">public</span>&nbsp;<span style="color: #569cd6;">class</span>&nbsp;<span style="color: #4ec9b0;">UserProperties</span>&nbsp;<span style="color: #569cd6;">implements</span>&nbsp;<span style="color: #4ec9b0;">Serializable</span>&nbsp;{</div><br><div>&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #569cd6;">private</span>&nbsp;<span style="color: #569cd6;">static</span>&nbsp;<span style="color: #569cd6;">final</span>&nbsp;<span style="color: #4ec9b0;">long</span>&nbsp;<span style="color: #9cdcfe;">serialVersionUID</span>&nbsp;=&nbsp;<span style="color: #b5cea8;">111111111111111111L</span>;</div><br><div>&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #569cd6;">public</span>&nbsp;<span style="color: #dcdcaa;">UserProperties</span>(<span style="color: #4ec9b0;">User</span>&nbsp;<span style="color: #9cdcfe;">user</span>)&nbsp;{</div><div>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #569cd6;">this</span>.<span style="color: #9cdcfe;">user</span>&nbsp;=&nbsp;user;</div><div>&nbsp;&nbsp;&nbsp;&nbsp;}</div><div>&nbsp;&nbsp;&nbsp;&nbsp;</div><div>&nbsp;&nbsp;&nbsp;&nbsp;@<span style="color: #4ec9b0;">Id</span></div><div>&nbsp;&nbsp;&nbsp;&nbsp;@<span style="color: #4ec9b0;">GeneratedValue</span>(generator&nbsp;=&nbsp;<span style="color: #ce9178;">"gen"</span>)</div><div>&nbsp;&nbsp;&nbsp;&nbsp;@<span style="color: #4ec9b0;">GenericGenerator</span>(name&nbsp;=&nbsp;<span style="color: #ce9178;">"gen"</span>,&nbsp;strategy&nbsp;=&nbsp;<span style="color: #ce9178;">"foreign"</span></div><div>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;,&nbsp;parameters&nbsp;=&nbsp;@<span style="color: #4ec9b0;">Parameter</span>(name&nbsp;=&nbsp;<span style="color: #ce9178;">"property"</span>,&nbsp;value&nbsp;=&nbsp;<span style="color: #ce9178;">"user"</span>))</div><div>&nbsp;&nbsp;&nbsp;&nbsp;@<span style="color: #4ec9b0;">Column</span>(columnDefinition&nbsp;=&nbsp;<span style="color: #ce9178;">"BINARY(16)"</span>,&nbsp;name&nbsp;=&nbsp;<span style="color: #ce9178;">"UserId"</span>)</div><div>&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #569cd6;">private</span>&nbsp;<span style="color: #4ec9b0;">byte</span>[]&nbsp;<span style="color: #9cdcfe;">userId</span>;</div><br><div>&nbsp;&nbsp;&nbsp;&nbsp;@<span style="color: #4ec9b0;">JsonBackReference</span></div><div>&nbsp;&nbsp;&nbsp;&nbsp;@<span style="color: #4ec9b0;">OneToOne</span>(fetch&nbsp;=&nbsp;<span style="color: #9cdcfe;">FetchType</span>.<span style="color: #9cdcfe;">LAZY</span>)</div><div>&nbsp;&nbsp;&nbsp;&nbsp;@<span style="color: #4ec9b0;">PrimaryKeyJoinColumn</span>(name&nbsp;=&nbsp;<span style="color: #ce9178;">"UserId"</span>,&nbsp;referencedColumnName&nbsp;=&nbsp;<span style="color: #ce9178;">"Id"</span>)</div><div>&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #569cd6;">private</span>&nbsp;<span style="color: #4ec9b0;">User</span>&nbsp;<span style="color: #9cdcfe;">user</span>;</div><br><div>}</div><br><br></div><p><br></p><p><br></p><p><br></p><p><br></p><p><br></p><p><br></p><p><br></p>


[Hibernate] 1대1 관계 설정 OneToOne