hi,
I use bpmn2 eclipse plugin create a process flow and program a test.
I get below output messages:
(null: 2, 307): cvc-elt.1: Cannot find the declaration of element 'bpmn2:definitions'.
(null: 33, 63): cvc-elt.4.2: Cannot resolve 'dc:Point' to a type definition for element 'di:waypoint'.
(null: 34, 63): cvc-elt.4.2: Cannot resolve 'dc:Point' to a type definition for element 'di:waypoint'.
(null: 37, 63): cvc-elt.4.2: Cannot resolve 'dc:Point' to a type definition for element 'di:waypoint'.
(null: 38, 63): cvc-elt.4.2: Cannot resolve 'dc:Point' to a type definition for element 'di:waypoint'.
java.lang.NullPointerException
at org.mvel2.optimizers.OptimizerFactory.<clinit>(OptimizerFactory.java:45)
at org.drools.base.mvel.MVELCompilationUnit.compile(MVELCompilationUnit.java:419)
at org.drools.base.mvel.MVELCompilationUnit.getCompiledExpression(MVELCompilationUnit.java:243)
at org.jbpm.process.instance.impl.MVELAction.compile(MVELAction.java:70)
at org.jbpm.process.builder.dialect.mvel.MVELActionBuilder.build(MVELActionBuilder.java:131)
at org.jbpm.process.builder.ActionNodeBuilder.build(ActionNodeBuilder.java:25)
at org.jbpm.compiler.ProcessBuilderImpl.processNodes(ProcessBuilderImpl.java:213)
at org.jbpm.compiler.ProcessBuilderImpl.buildNodes(ProcessBuilderImpl.java:199)
at org.jbpm.compiler.ProcessBuilderImpl.buildProcess(ProcessBuilderImpl.java:163)
at org.jbpm.compiler.ProcessBuilderImpl.addProcessFromXml(ProcessBuilderImpl.java:252)
at org.drools.compiler.PackageBuilder.addProcessFromXml(PackageBuilder.java:564)
at org.drools.compiler.PackageBuilder.addKnowledgeResource(PackageBuilder.java:608)
at org.drools.builder.impl.KnowledgeBuilderImpl.add(KnowledgeBuilderImpl.java:37)
at com.test.workflow.BPMN2Test.main(BPMN2Test.java:14)
[MVEL] Notice: Possible incorrect version of ASM present (3.0 required). Disabling JIT compiler. Reflective Optimizer will be used.
hello world
Could anybody tell me how to resolve above NullPointerException. I don't find any solution from google's results.
and where I can find an full guider of how to use the BPMN2 eclipse plugin, thanks.
Forgive me for my bad english.Thanks very much.
bpmn file:
<?xml version="1.0" encoding="UTF-8"?>
<bpmn2:definitions xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:bpmn2="http://www.omg.org/spec/BPMN/20100524/MODEL" xmlns:bpmndi="http://www.omg.org/spec/BPMN/20100524/DI" xmlns:dc="http://www.omg.org/spec/DD/20100524/DC" xmlns:di="http://www.omg.org/spec/DD/20100524/DI" id="Definitions_1">
<bpmn2:collaboration id="Collaboration_1">
<bpmn2:participant id="Participant_1" name="Internal" processRef="com.test.login"/>
</bpmn2:collaboration>
<bpmn2:process id="com.test.login" name="loginProcess" isClosed="true">
<bpmn2:startEvent id="StartEvent_1" name="Start">
<bpmn2:outgoing>SequenceFlow_3</bpmn2:outgoing>
</bpmn2:startEvent>
<bpmn2:endEvent id="EndEvent_1" name="End">
<bpmn2:incoming>SequenceFlow_6</bpmn2:incoming>
</bpmn2:endEvent>
<bpmn2:sequenceFlow id="SequenceFlow_3" name="" sourceRef="StartEvent_1" targetRef="ScriptTask_1"/>
<bpmn2:scriptTask id="ScriptTask_1" name="Script Task" scriptFormat="">
<bpmn2:incoming>SequenceFlow_3</bpmn2:incoming>
<bpmn2:outgoing>SequenceFlow_6</bpmn2:outgoing>
<bpmn2:script>System.out.println("hello world");</bpmn2:script>
</bpmn2:scriptTask>
<bpmn2:sequenceFlow id="SequenceFlow_6" name="" sourceRef="ScriptTask_1" targetRef="EndEvent_1"/>
</bpmn2:process>
<bpmndi:BPMNDiagram id="_L0Uu0DtuEeGfR6QZoDLdng">
<bpmndi:BPMNPlane id="_L0Uu0TtuEeGfR6QZoDLdng" bpmnElement="com.test.login">
<bpmndi:BPMNShape id="BPMNShape_StartEvent_1" bpmnElement="StartEvent_1">
<dc:Bounds height="51.0" width="36.0" x="90.0" y="170.0"/>
</bpmndi:BPMNShape>
<bpmndi:BPMNShape id="BPMNShape_EndEvent_1" bpmnElement="EndEvent_1">
<dc:Bounds height="51.0" width="36.0" x="450.0" y="170.0"/>
</bpmndi:BPMNShape>
<bpmndi:BPMNShape id="BPMNShape_ScriptTask_1" bpmnElement="ScriptTask_1">
<dc:Bounds height="50.0" width="110.0" x="230.0" y="163.0"/>
</bpmndi:BPMNShape>
<bpmndi:BPMNEdge id="BPMNEdge_SequenceFlow_3" bpmnElement="SequenceFlow_3" sourceElement="BPMNShape_StartEvent_1" targetElement="BPMNShape_ScriptTask_1">
<di:waypoint xsi:type="dc:Point" x="126.0" y="188.0"/>
<di:waypoint xsi:type="dc:Point" x="230.0" y="188.0"/>
</bpmndi:BPMNEdge>
<bpmndi:BPMNEdge id="BPMNEdge_SequenceFlow_4" bpmnElement="SequenceFlow_6" sourceElement="BPMNShape_ScriptTask_1" targetElement="BPMNShape_EndEvent_1">
<di:waypoint xsi:type="dc:Point" x="340.0" y="188.0"/>
<di:waypoint xsi:type="dc:Point" x="450.0" y="188.0"/>
</bpmndi:BPMNEdge>
</bpmndi:BPMNPlane>
</bpmndi:BPMNDiagram>
</bpmn2:definitions>
java source:
package com.test.workflow;
import org.drools.KnowledgeBase;
import org.drools.builder.KnowledgeBuilder;
import org.drools.builder.KnowledgeBuilderFactory;
import org.drools.builder.ResourceType;
import org.drools.io.ResourceFactory;
import org.drools.runtime.StatefulKnowledgeSession;
import org.drools.runtime.process.ProcessInstance;
public class BPMN2Test {
public static void main(String[] args) {
KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();
kbuilder.add(ResourceFactory.newClassPathResource("com/test/workflow/flow/loginProcess.bpmn"),
ResourceType.BPMN2);
KnowledgeBase kbase = kbuilder.newKnowledgeBase();
StatefulKnowledgeSession ksession = kbase.newStatefulKnowledgeSession();
ProcessInstance processInstance = ksession.startProcess("com.test.login");
}
}