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an org.hibernate.exception.ConstraintViolationException while persisting process instances
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created by <a href="https://community.jboss.org/people/bardelman">Feki Ahmed</a> in <i>jBPM Development</i> - <a href="https://community.jboss.org/message/784931#784931">View the full discussion</a>
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<div class="jive-rendered-content"><p>Hi, </p><p>i m developping a web application based on <a class="jive-link-blog-small" href="https://community.jboss.org/people/bpmn2user/blog/2011/09/21/jbpm5-web-example">this example</a>.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>In order to make my application storing already-started/unfinished processes/sessions and being able to retrieve them later(which is an avantage of the jbpm framework..); i want that these processes to be persisted on the database and not to be erased and replaced by a new data when a new record is persisted ,so , it is clear that the problem is about the property "hibernate.hbm2ddl.auto" on the persistance.xml's persistance-unit configuration..  but i actually have a problem to do this. My persistance.xml  looks like this :</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p><?xml version="1.0" encoding="UTF-8" standalone="yes"?></p><p><span><persistence version="1.0" xsi:schemaLocation="</span><a class="jive-link-external-small" href="http://java.sun.com/xml/ns/persistence" target="_blank">http://java.sun.com/xml/ns/persistence</a><span> </span><a class="jive-link-external-small" href="http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd" target="_blank">http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd</a></p><p><a class="jive-link-external-small" href="http://java.sun.com/xml/ns/persistence/orm" target="_blank">http://java.sun.com/xml/ns/persistence/orm</a><span> </span><a class="jive-link-external-small" href="http://java.sun.com/xml/ns/persistence/orm_1_0.xsd" target="_blank">http://java.sun.com/xml/ns/persistence/orm_1_0.xsd</a><span>" xmlns:orm="</span><a class="jive-link-external-small" href="http://java.sun.com/xml/ns/persistence/orm" target="_blank">http://java.sun.com/xml/ns/persistence/orm</a><span>" xmlns:xsi="</span><a class="jive-link-external-small" href="http://www.w3.org/2001/XMLSchema-instance" target="_blank">http://www.w3.org/2001/XMLSchema-instance</a><span>" xmlns="</span><a class="jive-link-external-small" href="http://java.sun.com/xml/ns/persistence" target="_blank">http://java.sun.com/xml/ns/persistence</a><span>"></span></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>     <persistence-unit name="org.jbpm.persistence.jpa" transaction-type="JTA"></p><p>        <provider>org.hibernate.ejb.HibernatePersistence</provider></p><p>        <jta-data-source>java:comp/env/jdbc/testDS1</jta-data-source></p><p>        <class>org.drools.persistence.info.SessionInfo</class></p><p>        <class>org.jbpm.persistence.processinstance.ProcessInstanceInfo</class></p><p>        <class>org.jbpm.persistence.processinstance.ProcessInstanceEventInfo</class></p><p>        <class>org.drools.persistence.info.WorkItemInfo</class></p><p>        <class>org.jbpm.process.audit.ProcessInstanceLog</class></p><p>        <class>org.jbpm.process.audit.NodeInstanceLog</class></p><p>        <class>org.jbpm.process.audit.VariableInstanceLog</class>       </p><p>        </p><p>         </p><p>        <class>org.jbpm.task.Task</class></p><p>                         <class>org.jbpm.task.Comment</class></p><p>                         <class>org.jbpm.task.Attachment</class></p><p>                         <class>org.jbpm.task.I18NText</class></p><p>                         <class>org.jbpm.task.SubTasksStrategy</class></p><p>                         <class>org.jbpm.task.Deadline</class></p><p>                         <class>org.jbpm.task.Escalation</class></p><p>                         <class>org.jbpm.task.Reassignment</class></p><p>                         <class>org.jbpm.task.Notification</class></p><p>                         <class>org.jbpm.task.BooleanExpression</class></p><p>                         <class>org.jbpm.task.User</class></p><p>                         <class>org.jbpm.task.PeopleAssignments</class></p><p>                     </p><p>                     </p><p>        <properties></p><p>                      </p><p>             <!-- mysql dialect --> </p><p>           </p><p>            <property name="hibernate.dialect" value="org.hibernate.dialect.MySQLDialect"/></p><p>           </p><p>            <property name="hibernate.connection.autocommit" value="false"/></p><p>            <property name="hibernate.max_fetch_depth" value="3"/></p><p>            <property name="hibernate.hbm2ddl.auto" value="update" /></p><p>            <property name="hibernate.show_sql" value="false" /></p><p>            <property name="hibernate.transaction.manager_lookup_class" value="org.hibernate.transaction.BTMTransactionManagerLookup"/></p><p>        </properties></p><p>      </p><p>      </p><p>    </persistence-unit></p><p>    <persistence-unit name="org.jbpm.task"></p><p>        <provider>org.hibernate.ejb.HibernatePersistence</provider></p><p>        </p><p>        <class>org.jbpm.task.Attachment</class></p><p>        <class>org.jbpm.task.Content</class></p><p>        <class>org.jbpm.task.BooleanExpression</class></p><p>        <class>org.jbpm.task.Comment</class></p><p>        <class>org.jbpm.task.Deadline</class></p><p>        <class>org.jbpm.task.Comment</class></p><p>        <class>org.jbpm.task.Deadline</class></p><p>        <class>org.jbpm.task.Delegation</class></p><p>        <class>org.jbpm.task.Escalation</class></p><p>        <class>org.jbpm.task.Group</class></p><p>        <class>org.jbpm.task.I18NText</class></p><p>        <class>org.jbpm.task.Notification</class></p><p>        <class>org.jbpm.task.EmailNotification</class></p><p>        <class>org.jbpm.task.EmailNotificationHeader</class></p><p>        <class>org.jbpm.task.PeopleAssignments</class></p><p>        <class>org.jbpm.task.Reassignment</class></p><p>        <class>org.jbpm.task.Status</class></p><p>        <class>org.jbpm.task.Task</class></p><p>        <class>org.jbpm.task.TaskData</class></p><p>        <class>org.jbpm.task.SubTasksStrategy</class></p><p>        <class>org.jbpm.task.OnParentAbortAllSubTasksEndStrategy</class></p><p>        <class>org.jbpm.task.OnAllSubTasksEndParentEndStrategy</class></p><p>  </p><p>        <class>org.jbpm.task.User</class></p><p>            </p><p>        <class>org.drools.persistence.info.SessionInfo</class></p><p>        <class>org.jbpm.persistence.processinstance.ProcessInstanceInfo</class></p><p>        <class>org.jbpm.persistence.processinstance.ProcessInstanceEventInfo</class></p><p>        <class>org.drools.persistence.info.WorkItemInfo</class>    </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>        <properties>                                               </p><p>            </p><p>             <property name="hibernate.dialect" value="org.hibernate.dialect.MySQLDialect"/></p><p>            <property name="hibernate.connection.driver_class" value="com.mysql.jdbc.Driver"/></p><p>            <property name="hibernate.connection.url" value="jdbc:mysql://localhost:3306/jbpm5webexpl" /></p><p>            <property name="hibernate.connection.username" value="root"/></p><p>            <property name="hibernate.connection.password" value="sdfsdf"/></p><p>            </p><p>            </p><p>            <property name="hibernate.connection.autocommit" value="false" /></p><p>            <property name="hibernate.max_fetch_depth" value="3"/></p><p>            <property name="hibernate.hbm2ddl.auto" value="update" /></p><p>            <property name="hibernate.show_sql" value="false" /></p><p>        </properties></p><p>    </persistence-unit></p><p></persistence></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>while initiating a servlet which is responsible for the starting of the human-task service, users must be added :</p><p>public class HumanTaskStartupServlet extends HttpServlet {</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>           private static Log log = LogFactory.getLog(HumanTaskStartupServlet.class);</p><p>           </p><p>           public void init() throws ServletException {</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>                  super.init();       </p><p>                              try {</p><p>  </p><p>                      </p><p>                              EntityManagerFactory emfTask = Persistence.createEntityManagerFactory( "org.jbpm.task" );</p><p>                              TaskService taskService = new TaskService(emfTask, SystemEventListenerFactory.getSystemEventListener());</p><p>  </p><p>  </p><p>  </p><p>          /*</p><p>                   * Add the required users </p><p>                   */</p><p>                  TaskServiceSession taskSession = taskService.createSession();   </p><p>                  try {</p><p>                          taskSession.addUser(new User("Administrator"));</p><p>                          taskSession.addUser(new User("krisv")); </p><p>                          taskSession.addUser(new User("john"));</p><p>                          taskSession.addUser(new User("mary"));</p><p>                                         } catch (Exception e) {</p><p>                                                       e.printStackTrace();</p><p>                 }</p><p>                  </p><p>                  </p><p>                  /* Start Mina server for HT*/</p><p>                  MinaTaskServer server = new MinaTaskServer(taskService);</p><p>                  Thread thread = new Thread(server);</p><p>                  thread.start();</p><p>                 </p><p>                  log.debug("Mina Server started ..."); </p><p>                              } catch (Throwable t) {</p><p>                                        log.error(t.getMessage(), t.getCause());</p><p>                                        throw new RuntimeException("can't start Mina server",t);</p><p>  </p><p>                              }</p><p>  </p><p>           }</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>At the beginning, the property "hibernate.hbm2ddl.auto"was set to "create" so always only one record remain on the database when i changed it to "update"</p><p>i got this ERROR : </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>org.hibernate.exception.ConstraintViolationException: Could not execute JDBC batch update</p><p>          at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:94)</p><p>          at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:66)</p><p>          at org.hibernate.jdbc.AbstractBatcher.executeBatch(AbstractBatcher.java:275)</p><p>          at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:266)</p><p>          at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:167)</p><p>          at org.hibernate.event.def.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:321)</p><p>          at org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:50)</p><p>          at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:1027)</p><p>          at org.hibernate.impl.SessionImpl.managedFlush(SessionImpl.java:365)</p><p>          at org.hibernate.transaction.JDBCTransaction.commit(JDBCTransaction.java:137)</p><p>          at org.hibernate.ejb.TransactionImpl.commit(TransactionImpl.java:54)</p><p>          at org.jbpm.task.service.TaskServiceSession.doOperationInTransaction(TaskServiceSession.java:716)</p><p>          at org.jbpm.task.service.TaskServiceSession.persistInTransaction(TaskServiceSession.java:682)</p><p>          at org.jbpm.task.service.TaskServiceSession.addUser(TaskServiceSession.java:69)</p><p>          at com.sample.taskserver.HumanTaskStartupServlet.init(HumanTaskStartupServlet.java:73)</p><p>          at javax.servlet.GenericServlet.init(GenericServlet.java:160)</p><p>          at org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1266)</p><p>          at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1185)</p><p>          at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:1080)</p><p>          at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:5027)</p><p>          at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5314)</p><p>          at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)</p><p>          at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:901)</p><p>          at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:877)</p><p>          at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:618)</p><p>          at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:963)</p><p>          at org.apache.catalina.startup.HostConfig$DeployWar.run(HostConfig.java:1600)</p><p>          at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)</p><p>          at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)</p><p>          at java.util.concurrent.FutureTask.run(Unknown Source)</p><p>          at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source)</p><p>          at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)</p><p>          at java.lang.Thread.run(Unknown Source)</p><p>Caused by: java.sql.BatchUpdateException: Duplicate entry 'Administrator' for key 'PRIMARY'</p><p>          at com.mysql.jdbc.PreparedStatement.executeBatchSerially(PreparedStatement.java:2020)</p><p>          at com.mysql.jdbc.PreparedStatement.executeBatch(PreparedStatement.java:1451)</p><p>          at org.hibernate.jdbc.BatchingBatcher.doExecuteBatch(BatchingBatcher.java:70)</p><p>          at org.hibernate.jdbc.AbstractBatcher.executeBatch(AbstractBatcher.java:268)</p><p>          ... 30 more</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p> and unfortunatelly it should be a fatal error as the application coudn't continue : i also got this ERROR:</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>2012-12-26 01:45:33,559 (TaskProcessServlet.java:81) ERROR com.sample.processserver.TaskProcessServlet - Could not connect task client</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>i need your help for this issue, CHEERS !</p></div>
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