[jBPM] - java.io.OptionalDataException when do ObjectInputStream.readObject()
by TC ONG
TC ONG [https://community.jboss.org/people/devilkazuya99] created the discussion
"java.io.OptionalDataException when do ObjectInputStream.readObject()"
To view the discussion, visit: https://community.jboss.org/message/807101#807101
--------------------------------------------------------------
I am using jBPM 5.4.0 final here.
https://community.jboss.org/servlet/JiveServlet/showImage/2-807101-20589/... https://community.jboss.org/servlet/JiveServlet/downloadImage/2-807101-20...
In me bpmn file I have a String variable in my process. I set it in "onEntry" scritp of my Human Task. Then map it to "Content" in data input association.
<userTask id="_5" name="User Task" >
<extensionElements>
<tns:onEntry-script scriptFormat="http://www.java.com/java">
<script>
* String s = "How do you do?";*
* kcontext.setVariable("content", s);*
</script>
</tns:onEntry-script>
</extensionElements>
<ioSpecification>
* <dataInput id="_5_ContentInput" name="Content" />*
* <dataOutput id="_5_answerOutput" name="answer" />*
<inputSet>
<dataInputRefs>_5_ContentInput</dataInputRefs>
</inputSet>
<outputSet>
<dataOutputRefs>_5_answerOutput</dataOutputRefs>
</outputSet>
</ioSpecification>
* <dataInputAssociation>*
* <sourceRef>content</sourceRef>*
* <targetRef>_5_ContentInput</targetRef>*
* </dataInputAssociation>*
<dataInputAssociation>
<targetRef>_5_ContentInput</targetRef>
<assignment>
<from xsi:type="tFormalExpression"></from>
<to xsi:type="tFormalExpression">_5_ContentInput</to>
</assignment>
</dataInputAssociation>
<dataOutputAssociation>
<sourceRef>_5_answerOutput</sourceRef>
<targetRef>answer</targetRef>
</dataOutputAssociation>
<potentialOwner>
<resourceAssignmentExpression>
<formalExpression>nemo</formalExpression>
</resourceAssignmentExpression>
</potentialOwner>
</userTask>
I hope to get the "Content" at the programming side.
List<TaskSummary> taskSummaryList = localTaskService.getTasksAssignedAsPotentialOwner("nemo", "en-UK");
for (TaskSummary taskSummary : taskSummaryList) {
System.out.println(taskSummary.getId() + "\t" + taskSummary.getName() + "\t" + taskSummary.getStatus());
Task task = localTaskService.getTask(taskSummary.getId());
long documentContentId = task.getTaskData().getDocumentContentId();
* Content content = localTaskService.getContent(documentContentId);*
System.out.println(content.getId() + " => " + content.toString());
if (content != null){
ByteArrayInputStream bais = new ByteArrayInputStream(content.getContent());
ObjectInputStream ois;
try {
ois = new ObjectInputStream(bais);
*Object obj = ois.readObject();*
logger.debug("Object = " + obj.getClass());
} catch (IOException e) {
*e.printStackTrace();*
} catch (ClassNotFoundException e) {
e.printStackTrace();
}
}
localTaskService.start(taskSummary.getId(), "nemo");
Map<String, Object> results = new HashMap<String, Object>();
results.put("answer", "GOOD");
localTaskService.completeWithResults(taskSummary.getId(), "nemo", results);
}
The result on the console is:
1 => org.jbpm.task.Content@74baaca4
java.io.OptionalDataException
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1358)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:369)
at HelloJBPM5.main(HelloJBPM5.java:73)
--------------------------------------------------------------
Reply to this message by going to Community
[https://community.jboss.org/message/807101#807101]
Start a new discussion in jBPM at Community
[https://community.jboss.org/choose-container!input.jspa?contentType=1&con...]
11 years, 5 months
[jBPM] - Re: Integration of jbpm5.4 with LDAP
by Maciej Swiderski
Maciej Swiderski [https://community.jboss.org/people/swiderski.maciej] created the discussion
"Re: Integration of jbpm5.4 with LDAP"
To view the discussion, visit: https://community.jboss.org/message/807336#807336
--------------------------------------------------------------
Looks like this is the root problem why task is not created:
10:26:51,222 ERROR [stderr] (Thread-70) java.lang.NullPointerException
10:26:51,223 ERROR [stderr] (Thread-70) at org.jbpm.task.identity.LDAPUserGroupCallbackImpl.existsUser(LDAPUserGroupCallbackImpl.java:134)
10:26:51,224 ERROR [stderr] (Thread-70) at org.jbpm.task.service.TaskServiceSession.doCallbackUserOperation(TaskServiceSession.java:1225)
10:26:51,225 ERROR [stderr] (Thread-70) at org.jbpm.task.service.TaskServiceSession.getTasksOwned(TaskServiceSession.java:763)
10:26:51,225 ERROR [stderr] (Thread-70) at org.jbpm.task.service.TaskServerHandler.messageReceived(TaskServerHandler.java:309)
10:26:51,226 ERROR [stderr] (Thread-70) at org.jbpm.task.service.hornetq.HornetQTaskServerHandler.messageReceived(HornetQTaskServerHandler.java:43)
10:26:51,226 ERROR [stderr] (Thread-70) at org.jbpm.task.service.hornetq.BaseHornetQTaskServer.run(BaseHornetQTaskServer.java:104)
10:26:51,227 ERROR [stderr] (Thread-70) at java.lang.Thread.run(Unknown Source)
I believe LDAP query does not return expected results, please make sure the filter you defined for it in the config file is valid and returns results as expected.
HTH
--------------------------------------------------------------
Reply to this message by going to Community
[https://community.jboss.org/message/807336#807336]
Start a new discussion in jBPM at Community
[https://community.jboss.org/choose-container!input.jspa?contentType=1&con...]
11 years, 5 months
