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Re: TwoPhaseCoordinator.beforeCompletion - Unknown node instance type
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created by <a href="https://community.jboss.org/people/swiderski.maciej">Maciej Swiderski</a> in <i>jBPM</i> - <a href="https://community.jboss.org/message/764319#764319">View the full discussion</a>
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<div class="jive-rendered-content"><p>I think that the cause fo the problem is:</p><p>Caused by: java.lang.NullPointerException</p><p>    at org.jbpm.process.instance.impl.ProcessInstanceImpl.getProcess(ProcessInstanceImpl.java:68)</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>that indicates you should use command to set the variables, try with following code:</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><pre class="jive-pre"><code class="jive-code jive-java">GenericCommand<Void> setProcInstVariablesCommand = <font color="navy"><b>new</b></font> GenericCommand<Void>() <font color="navy">{</font>
            <font color="navy"><b>public</b></font> Void execute(Context context) <font color="navy">{</font>
                StatefulKnowledgeSession ksession = ((KnowledgeCommandContext) context).getStatefulKnowledgesession();
                ProcessInstance processInstance = ksession.getProcessInstance(<font color="navy"><b>new</b></font> Long(processInstanceId));
                <font color="navy"><b>if</b></font> (processInstance != <font color="navy"><b>null</b></font>) <font color="navy">{</font>
                    VariableScopeInstance variableScope = (VariableScopeInstance)
                        ((org.jbpm.process.instance.ProcessInstance) processInstance)
                            .getContextInstance(VariableScope.VARIABLE_SCOPE);
                    <font color="navy"><b>if</b></font> (variableScope == <font color="navy"><b>null</b></font>) <font color="navy">{</font>
                        <font color="navy"><b>throw</b></font> <font color="navy"><b>new</b></font> IllegalArgumentException(
                            <font color="red">"Could not find variable scope for process instance "</font> + processInstanceId);
                    <font color="navy">}</font>
                    <font color="navy"><b>for</b></font> (Map.Entry<String, Object> entry: variables.entrySet()) <font color="navy">{</font>
                        variableScope.setVariable(entry.getKey(), entry.getValue());
                    <font color="navy">}</font>
                <font color="navy">}</font> <font color="navy"><b>else</b></font> <font color="navy">{</font>
                    <font color="navy"><b>throw</b></font> <font color="navy"><b>new</b></font> IllegalArgumentException(<font color="red">"Could not find process instance "</font> + processInstanceId);
                <font color="navy">}</font>
                <font color="navy"><b>return</b></font> <font color="navy"><b>null</b></font>;
            <font color="navy">}</font>
        <font color="navy">}</font>;
 
ksession.execute(setProcInstVariablesCommand);
</code></pre><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>HTH</p></div>
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