Bug 779202 (SOA-1596)

Summary:	NullPointerException in jbpm-console when viewing running process
Product:	[JBoss] JBoss Enterprise SOA Platform 4	Reporter:	Toshiya Kobayashi <tkobayas>
Component:	JBPM - within SOA, JBPM - standalone	Assignee:	Alejandro Guizar <alex.guizar>
Status:	CLOSED NEXTRELEASE	QA Contact:
Severity:	high	Docs Contact:
Priority:	high
Version:	4.3 CP01, 4.3 CP02	CC:	dlesage, imamura.yousuke
Target Milestone:	---
Target Release:	4.3 CP04 ER1
Hardware:	Unspecified
OS:	Unspecified
URL:	http://jira.jboss.org/jira/browse/SOA-1596
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2010-03-24 09:51:43 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Bug Depends On:
Bug Blocks:	779321
Deadline:	2010-03-08

Description Toshiya Kobayashi 2009-11-12 13:49:48 UTC

Affects: Release Notes
Date of First Response: 2010-02-24 22:52:28
Help Desk Ticket Reference: https://enterprise.redhat.com/issue-tracker/363907
Workaround: Workaround Exists
Workaround Description: Modify jbpm-console.war/app/t_tokens.xhtml

<gd:sort source="#{token.availableTransitions}" target="#{transitions}" entryVar="e" argument="#{e.name}"/>

to

<gd:sort if="#{! empty token.availableTransitions}"  source="#{token.availableTransitions}" target="#{transitions}" entryVar="e" argument="#{e.name == null ? '' : e.name}"/>
project_key: SOA

When I access process instances through jbpm-console, ServletException is thrown.

Stack Trace:
14:17:38,640 ERROR [viewhandler] Error Rendering View[/app/procins.xhtml]
java.lang.NullPointerException
        at java.lang.String.compareTo(String.java:997)
        at java.lang.String.compareTo(String.java:90)
        at org.jboss.gravel.data.action.SortActionListener$ELComparator.compare(SortActionListener.java:144)
        at java.util.Arrays.mergeSort(Arrays.java:1284)
        at java.util.Arrays.sort(Arrays.java:1223)
        at java.util.Collections.sort(Collections.java:159)
        at org.jboss.gravel.data.action.SortActionListener.processAction(SortActionListener.java:83)
        at javax.faces.event.ActionEvent.processListener(ActionEvent.java:88)
        at javax.faces.component.UIComponentBase.broadcast(UIComponentBase.java:771)
        at javax.faces.component.UICommand.broadcast(UICommand.java:372)
        at org.jboss.gravel.action.handler.ResponseActionsHandler.onComponentPopulated(ResponseActionsHandler.java:24)
        at com.sun.facelets.tag.jsf.ComponentHandler.apply(ComponentHandler.java:180)
        at com.sun.facelets.tag.CompositeFaceletHandler.apply(CompositeFaceletHandler.java:47)
...

processdefinition.xml:
<process-definition  xmlns="urn:jbpm.org:jpdl-3.2"  name="sample1">
        <start-state name="start-state1">
                <transition to="fork1"></transition>
        </start-state>
        <fork name="fork1">
                <transition to="state1"></transition>
                <transition to="state2" name="to state2"></transition>
        </fork>
        <state name="state1">
                <transition to="join1"></transition>
        </state>
        <state name="state2">
                <transition to="join1"></transition>
        </state>
        <join name="join1">
                <transition to="end-state1"></transition>
        </join>
        <end-state name="end-state1"></end-state>
</process-definition>

I see the same Exception with process definitions which have <fork> with  <state> , <task> or <node async="true">.

Procedure to reproduce:
- login to jbpm-console
- click [Examine] of the process definition
- click [Start] in the left pane 
- click [Tokens] in the left pane
- click [Signal] of the token

Comment 1 Toshiya Kobayashi 2009-11-12 13:52:13 UTC

Link: Added: This issue incorporates JBPM-1930

Comment 2 Jaroslaw Kijanowski 2009-12-11 13:10:08 UTC

Link: Added: This issue is a dependency of SOA-1709

Comment 3 Alejandro Guizar 2010-02-25 03:52:28 UTC

Resolving, project issue JBPM-1930 done.
Fix committed to https://svn.jboss.org/repos/jbpm/projects/jsf-console/branches/jsf-console-3.2-soa

Comment 5 Anne-Louise Tangring 2010-02-25 19:35:38 UTC

Approved for SOA 4.3 CP03.

Comment 6 David Le Sage 2010-03-14 23:46:44 UTC

Draft text for the Resolved Issues section of the Release Notes states:


https://jira.jboss.org/jira/browse/SOA-1591

    The org.jbpm.command.GetTaskListCommand.execute() would throw a
    JbpmPersistenceException exception if there were no pooled task instances for a given
    actor, even if that actor had been specifically assigned some. This occurred because a check for
    empty lists had been removed as it was no longer supported in JDK 1.4.

    A fix has been applied so that the software now checks
    TaskMgmtSession.findTaskInstancesByIds in order to determine whether or not the
    taskInstanceIds list is empty. As a result, the exception no longer occurs.

Comment 8 David Le Sage 2010-03-15 00:41:23 UTC

Sorry, Toshiya! ;-p 


The correct draft text for SOA-1596 is: 



https://jira.jboss.org/jira/browse/JBPM-1930 

    A java.lang.NullPointerException would be thrown when the user tried to access process 
    instances via the jBPM Console. This would happen because one of the transitions lacked a 
    name attribute. 

    To fix this issue, the software has been modified so that it now checks for a transition name of 
    "null" in the t_tokens.xhtml file. As a result, the page now displays as one would expect and 
    the exception does not occur.

Comment 9 Martin Vecera 2010-03-24 09:51:43 UTC

Verified in 4.3.CP03 ER1

Comment 10 Martin Vecera 2010-05-03 10:46:03 UTC

Link: Added: This issue is incorporated by JBQA-3342