topic Persist data in subprocess in call activity from multi instance in Alfresco Forum https://connect.hyland.com/t5/alfresco-forum/persist-data-in-subprocess-in-call-activity-from-multi-instance/m-p/37777#M15922 <HTML><HEAD></HEAD><BODY><P>I have a process where I call another subprocess in a loop.&nbsp;</P><P>&lt;code&gt;</P><P>&lt;callActivity id="callactivity_PickArticle" name="Pick article" calledElement="pickArticleSubProcess"&gt;<BR />&lt;extensionElements&gt;<BR />&lt;activiti:in source="OrderLine" target="CurrentOrderLine"/&gt;<BR />&lt;/extensionElements&gt;<BR />&lt;multiInstanceLoopCharacteristics isSequential="true" activiti:collection="${Order.orderLines}" activiti:elementVariable="OrderLine"&gt;</P><P></P><P>&lt;/multiInstanceLoopCharacteristics&gt;<BR />&lt;/callActivity&gt;</P><P>&lt;code&gt;</P><P></P><P>This subprocess should update the passed element variable and in the end persist the changes to the database.</P><P>&lt;code&gt;</P><P>&lt;process id="pickArticleSubProcess" name="Pick article process" isExecutable="true"&gt;<BR />&lt;startEvent id="startevent1" name="Start"&gt;&lt;/startEvent&gt;<BR />&lt;endEvent id="endevent1" name="End"&gt;&lt;/endEvent&gt;<BR />&lt;userTask id="usertask_ConfirmLocation" name="Go to location"&gt;<BR />&lt;extensionElements&gt;<BR />&lt;activiti:formProperty id="locationCode" name="locationCode" required="true"&gt;&lt;/activiti:formProperty&gt;<BR />&lt;/extensionElements&gt;<BR />&lt;/userTask&gt;<BR />&lt;userTask id="usertask_ConfirmQuantity" name="Confirm Quantity"&gt;<BR />&lt;extensionElements&gt;<BR />&lt;activiti:formProperty id="quantity" name="quantity" required="true"&gt;&lt;/activiti:formProperty&gt;<BR />&lt;activiti:formProperty id="reasonCode" name="reasonCode"&gt;&lt;/activiti:formProperty&gt;<BR />&lt;/extensionElements&gt;<BR />&lt;/userTask&gt;<BR />&lt;sequenceFlow id="flow2" sourceRef="usertask_ConfirmLocation" targetRef="usertask_ConfirmQuantity"&gt;&lt;/sequenceFlow&gt;<BR />&lt;serviceTask id="servicetask_BookArticle" name="Book article" activiti:delegateExpression="${BookArticleDelegate}"&gt;&lt;/serviceTask&gt;<BR />&lt;sequenceFlow id="flow3" sourceRef="usertask_ConfirmQuantity" targetRef="servicetask_BookArticle"&gt;&lt;/sequenceFlow&gt;<BR />&lt;sequenceFlow id="flow4" sourceRef="servicetask_BookArticle" targetRef="endevent1"&gt;&lt;/sequenceFlow&gt;<BR />&lt;sequenceFlow id="flow5" sourceRef="startevent1" targetRef="usertask_ConfirmLocation"&gt;&lt;/sequenceFlow&gt;<BR />&lt;/process&gt;</P><P>&lt;code&gt;</P><P></P><P>When I save the current orderline with: orderLineService.saveOrderLine(orderLine);, directly after the delegate the orderline is persisted. But when I complete the last orderline in the multi instance, all the orderlines, except the last one, are changed back to all the values null.</P><P>&lt;code&gt;</P><P>@Component("BookArticleDelegate")<BR />public class BookArticleDelegate implements JavaDelegate {</P><P>@Autowired<BR />private OrderLineService orderLineService;</P><P></P><P>@Override<BR />public void execute(DelegateExecution de) {<BR />OrderLine orderLine = (OrderLine) de.getVariable("CurrentOrderLine");</P><P></P><P>String sQuantity = (String) de.getVariable("quantity");<BR />int quantity = Integer.parseInt(sQuantity);</P><P></P><P>String reason;</P><P></P><P>try {<BR />reason = (String) de.getVariable("reasonCode");<BR />orderLine.setReasonCode(reason);<BR />} catch (Exception ex) {</P><P></P><P>}</P><P></P><P>orderLine.setPickedAmount(quantity);<BR />orderLine.setHandled(true);</P><P></P><P>orderLineService.saveOrderLine(orderLine);<BR />}<BR />}</P><P>&lt;code&gt;</P><P></P><P>Something is going wrong, but I can't figure out what.</P><P></P><P>-- EDIT</P><P>I made the collection Order transient, because I believe it has something to do with managed entities that overwrite my own commits. Now after the first iteration through the multi instance call activity I get the following error:</P><P></P><P>&lt;code&gt;</P><P>Exception in thread "Thread-12" org.activiti.engine.ActivitiException: Could not execute inner activity behavior of multi instance behavior<BR /> at org.activiti.engine.impl.bpmn.behavior.SequentialMultiInstanceBehavior.leave(SequentialMultiInstanceBehavior.java:117)<BR /> at org.activiti.engine.impl.bpmn.behavior.MultiInstanceActivityBehavior.completed(MultiInstanceActivityBehavior.java:172)<BR /> at org.activiti.engine.impl.agenda.EndExecutionOperation.handleProcessInstanceExecution(EndExecutionOperation.java:98)<BR /> at org.activiti.engine.impl.agenda.EndExecutionOperation.handleRegularExecution(EndExecutionOperation.java:166)<BR /> at org.activiti.engine.impl.agenda.EndExecutionOperation.run(EndExecutionOperation.java:48)<BR /> at org.activiti.engine.impl.interceptor.CommandInvoker.executeOperation(CommandInvoker.java:73)<BR /> at org.activiti.engine.impl.interceptor.CommandInvoker.executeOperations(CommandInvoker.java:57)<BR /> at org.activiti.engine.impl.interceptor.CommandInvoker.execute(CommandInvoker.java:42)<BR /> at org.activiti.engine.impl.interceptor.TransactionContextInterceptor.execute(TransactionContextInterceptor.java:48)<BR /> at org.activiti.engine.impl.interceptor.CommandContextInterceptor.execute(CommandContextInterceptor.java:63)<BR /> at org.activiti.spring.SpringTransactionInterceptor$1.doInTransaction(SpringTransactionInterceptor.java:47)<BR /> at org.springframework.transaction.support.TransactionTemplate.execute(TransactionTemplate.java:133)<BR /> at org.activiti.spring.SpringTransactionInterceptor.execute(SpringTransactionInterceptor.java:45)<BR /> at org.activiti.engine.impl.interceptor.LogInterceptor.execute(LogInterceptor.java:29)<BR /> at org.activiti.engine.impl.cfg.CommandExecutorImpl.execute(CommandExecutorImpl.java:44)<BR /> at org.activiti.engine.impl.cfg.CommandExecutorImpl.execute(CommandExecutorImpl.java:39)<BR /> at org.activiti.engine.impl.TaskServiceImpl.complete(TaskServiceImpl.java:186)<BR /> at com.mycompany.poc.inther.lc.workflow.workstation.engine.WorkflowEngineCore.completeTask(WorkflowEngineCore.java:102)<BR /> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)<BR /> at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)<BR /> at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)<BR /> at java.lang.reflect.Method.invoke(Method.java:498)<BR /> at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:333)<BR /> at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:190)<BR /> at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157)<BR /> at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:99)<BR /> at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:282)<BR /> at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:96)<BR /> at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)<BR /> at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:213)<BR /> at com.sun.proxy.$Proxy83.completeTask(Unknown Source)<BR /> at com.mycompany.poc.inther.lc.workflow.workstation.WorkstationCore.handleTerminalTaskResponse(WorkstationCore.java:133)<BR /> at com.mycompany.poc.inther.lc.workflow.workstation.WorkstationCore$1.run(WorkstationCore.java:74)<BR />Caused by: java.lang.NullPointerException<BR /> at org.activiti.engine.impl.bpmn.behavior.MultiInstanceActivityBehavior.executeOriginalBehavior(MultiInstanceActivityBehavior.java:199)<BR /> at org.activiti.engine.impl.bpmn.behavior.SequentialMultiInstanceBehavior.leave(SequentialMultiInstanceBehavior.java:109)<BR /> ... 32 more</P><P>&lt;/code&gt;</P><P></P><P>I found a JIRA issue which I believe covers the same problem, but I can't find the solution.</P><P><A href="https://issues.alfresco.com/jira/browse/ACTIVITI-921" rel="nofollow noopener noreferrer">Activiti: Multi Instance Collapsed Sub Process - NullPointerException</A></P></BODY></HTML> Tue, 07 Nov 2017 09:32:14 GMT wkoonings 2017-11-07T09:32:14Z Persist data in subprocess in call activity from multi instance https://connect.hyland.com/t5/alfresco-forum/persist-data-in-subprocess-in-call-activity-from-multi-instance/m-p/37777#M15922 I have a process where I call another subprocess in a loop.&nbsp;&lt;code&gt;&lt;callActivity id="callactivity_PickArticle" name="Pick article" calledElement="pickArticleSubProcess"&gt;&lt;extensionElements&gt;&lt;activiti:in source="OrderLine" target="CurrentOrderLine"/&gt;&lt;/extensionElements&gt;&lt; Tue, 07 Nov 2017 09:32:14 GMT https://connect.hyland.com/t5/alfresco-forum/persist-data-in-subprocess-in-call-activity-from-multi-instance/m-p/37777#M15922 wkoonings 2017-11-07T09:32:14Z Re: Persist data in subprocess in call activity from multi instance https://connect.hyland.com/t5/alfresco-forum/persist-data-in-subprocess-in-call-activity-from-multi-instance/m-p/37778#M15923 <HTML><HEAD></HEAD><BODY><P><A _jive_internal="true" href="https://community.alfresco.com/thread/234175-i-cant-persist-data-in-a-call-activity-in-multi-instance-loop" rel="nofollow noopener noreferrer">Double post</A>...</P></BODY></HTML> Tue, 07 Nov 2017 09:38:56 GMT https://connect.hyland.com/t5/alfresco-forum/persist-data-in-subprocess-in-call-activity-from-multi-instance/m-p/37778#M15923 afaust 2017-11-07T09:38:56Z Re: Persist data in subprocess in call activity from multi instance https://connect.hyland.com/t5/alfresco-forum/persist-data-in-subprocess-in-call-activity-from-multi-instance/m-p/37779#M15924 <HTML><HEAD></HEAD><BODY><P>you're right, i'm sorry, i'm new to this forum, i removed the other post</P></BODY></HTML> Tue, 07 Nov 2017 09:44:35 GMT https://connect.hyland.com/t5/alfresco-forum/persist-data-in-subprocess-in-call-activity-from-multi-instance/m-p/37779#M15924 wkoonings 2017-11-07T09:44:35Z Re: Persist data in subprocess in call activity from multi instance https://connect.hyland.com/t5/alfresco-forum/persist-data-in-subprocess-in-call-activity-from-multi-instance/m-p/37780#M15925 <HTML><HEAD></HEAD><BODY><P>Strange issue.</P><P>Can you try adding the attribute&nbsp;<SPAN class="" style="color: #7d9029; background-color: #f8f8f8;">activiti:async=</SPAN><SPAN class="" style="color: #ba2121; background-color: #f8f8f8;">"true"&nbsp;</SPAN>to your call activity element and check if you see the same behaviour?</P><P>In the second part you mentioned that "<SPAN style="color: #727174; background-color: #ffffff;">I made the collection Order transient"</SPAN>. Does it mean&nbsp;<SPAN>you tried the Transient Variable? If Transient Variable, I don't think it will work with your subprocess because you have a User Task in your subprocess and at that stage there is a wait state involved. Transient Variables do not survive beyond a wait state.</SPAN></P></BODY></HTML> Tue, 07 Nov 2017 18:32:21 GMT https://connect.hyland.com/t5/alfresco-forum/persist-data-in-subprocess-in-call-activity-from-multi-instance/m-p/37780#M15925 cjose 2017-11-07T18:32:21Z