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<td class="page-title-pattern-first-line " style="padding: 0; border-collapse: collapse; font-family: Arial, sans-serif; font-size: 14px; padding-top: 10px"> <a href="https://hibernate.atlassian.net/browse/HHH" style="color: #3b73af; text-decoration: none">Hibernate ORM</a> / <a href="https://hibernate.atlassian.net/browse/HHH-10983" style="color: #3b73af; text-decoration: none"><img src="cid:jira-generated-image-avatar-296d89f4-cdb4-4fab-8ef0-d1a4449626d0" height="16" width="16" border="0" align="absmiddle" alt="Bug" style="vertical-align: text-bottom"></a> <a href="https://hibernate.atlassian.net/browse/HHH-10983" style="color: #3b73af; text-decoration: none">HHH-10983</a> </td>
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<td style="padding: 0; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> <a class="user-hover" rel="Shoot3R" id="email_Shoot3R" href="https://hibernate.atlassian.net/secure/ViewProfile.jspa?name=Shoot3R" style="color:#6c797f;; color: #3b73af; text-decoration: none">Igor Dmitriev</a> </td>
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<td class="text-paragraph-pattern-container mobile-resize-text " style="padding: 0; border-collapse: collapse; padding: 0 0 10px"> <span class="diffcontext">Hi, I am trying to migrate from 4.3.6.Final to 5.1.0 Final to get java 8 date time api mapping and unrelated join entities features.<br>But unfortunately I got an issue related with sequence generation.<br>Here is my test:<br></span> <span class="diffaddedchars" style="background-color:#ddfade;"><br></span> <span class="diffcontext">{code}<br>for (int i = 0; i < 50; i++) {<br> Client client = new Client();<br> client.setName("Test#" + i);<br> clientRepository.save(client);<br> System.out.println(client.getId());<br>}<br>{code}<br><br>{code}<br></span> <span class="diffaddedchars" style="background-color:#ddfade;">-------------------------------------------------------------------------------------------------------------------------------<br></span> <span class="diffcontext">@Entity<br>@Table(name = "client")<br>@Getter<br>@Setter<br>class Client { <br> @Id<br> @GeneratedValue(strategy = GenerationType.SEQUENCE, generator = "c_seq")<br> @SequenceGenerator(name = "c_seq", sequenceName = "c_seq", allocationSize = 20)<br> @Column(name = "ID_CLIENT")<br> public Integer id;<br> <br> ....<br>}<br>{code}<br><br></span> <span class="diffremovedchars" style="background-color: #ffe7e7; text-decoration:line-through;">*</span> <span class="diffcontext">CREATE SEQUENCE c_seq start 1 increment 1;<br></span> <span class="diffremovedchars" style="background-color: #ffe7e7; text-decoration:line-through;">*</span> <span class="diffcontext"><br></span> <span class="diffaddedchars" style="background-color:#ddfade;">-------------------------------------------------------------------------------------------------------------------------------<br></span> <span class="diffcontext">Console output:<br>{code}<br>Hibernate: <br> select<br> nextval ('c_seq')<br>Hibernate: <br> select<br> nextval ('c_seq')<br>1,2<br>Hibernate: <br> select<br> nextval ('c_seq')<br>-16, -15, -14, -13, -12, -11, -10, -9, -8, -7, -6, -5, -4, -3, -2, -1, 0<br>org.springframework.dao.DataIntegrityViolationException: A different object with the same identifier value was already associated with the session : [igor.domain.Client#1]<br>This exception rises cause next id after 0 was 1 and we've already Client with id 1.<br>{code}<br>Actually you have changed sequence strategy generation in new 5.1.0 version<br>old: SequenceHiLoGenerator <br>new: SequenceStyleGenerator <br>And SequenceStyleGenerator uses PooledOptimizer.<br>I've spent time debugging PooledOptimizer and got that it happens due to this piece of code<br>{code}<br>else if ( generationState.value.gt( generationState.hiValue ) ) {<br> generationState.hiValue = callback.getNextValue();<br> generationState.value = generationState.hiValue.copy().subtract( incrementSize - 1 );<br>}<br>{code}<br><br>But it works fine with Hibernate 4.3.6.Final <br>Console output:<br>{code}<br>Hibernate: <br> select<br> nextval ('c_seq')<br>20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39,<br> Hibernate: <br> select<br> nextval ('c_seq')<br>40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59<br>Hibernate: <br> select<br> nextval ('c_seq')<br>60, 61, 62, 63, 64, 65, 66, 67, 68, 69<br>Hibernate: <br> /* insert igor.domain.Client<br> */ insert <br> into<br> client<br> (age, name, id_client) <br> values<br> (?, ?, ?) (x50 times)<br>{code}<br><br>As we can see everything is fine, allocationSize works and there is no exception with 4.3.6.<br>I am really wondering about negative ids and this issue.<br>NOTE: If I change my sequence to CREATE SEQUENCE c_seq start 1 increment 20;<br>increment size the same as allocationSize it works fine <br></span> </td>
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