I'm sorry but I've been dealing with this for more than two weeks now and I'm still couldn't get the WS invocation running 
I've looked at the examples and build my project the same way but calling an external WS. And there is no ItemDefinition.createInstance in the bpmn20.xml from the cxf-examples, with or without data flow definition. Attached is one of the examples I am trying to follow and my own process.
regards, Vero
I've looked at the examples and build my project the same way but calling an external WS. And there is no ItemDefinition.createInstance in the bpmn20.xml from the cxf-examples, with or without data flow definition. Attached is one of the examples I am trying to follow and my own process.regards, Vero
Hi, I was getting exactly the same exception. But I managed to resolve this.
The culprit was line no 3 in below code. The name field was not provided in my bpmn20.xml
I modified my process Id and the exception disappeared
So happy to see my process on the Activiti explorer.
<process id="ConsumeSpectrumWebservice" name="ConsumeWS">
I think Activiti code needs to be modified to add Null pointer checks
class org.activiti.explorer.ui.process.ProcessDefinitionListQuery
protected ProcessDefinitionListItem createItem(ProcessDefinition processDefinition) {
ProcessDefinitionListItem item = new ProcessDefinitionListItem();
item.addItemProperty("id", new ObjectProperty<String>(processDefinition.getId()));
item.addItemProperty("name", new ObjectProperty<String>(processDefinition.getName()));
item.addItemProperty("key", new ObjectProperty<String>(processDefinition.getKey()));
return item;
}
The culprit was line no 3 in below code. The name field was not provided in my bpmn20.xml
I modified my process Id and the exception disappeared
So happy to see my process on the Activiti explorer.
<process id="ConsumeSpectrumWebservice" name="ConsumeWS">
I think Activiti code needs to be modified to add Null pointer checks
class org.activiti.explorer.ui.process.ProcessDefinitionListQuery
protected ProcessDefinitionListItem createItem(ProcessDefinition processDefinition) {
ProcessDefinitionListItem item = new ProcessDefinitionListItem();
item.addItemProperty("id", new ObjectProperty<String>(processDefinition.getId()));
item.addItemProperty("name", new ObjectProperty<String>(processDefinition.getName()));
item.addItemProperty("key", new ObjectProperty<String>(processDefinition.getKey()));
return item;
}
hi, the error of the null pointer due to the no name of the process I was able to solve it, it is a ui checking problem, but now, I can deploy the process, I can see the model and I can start a process instance, and there is when I've got this other null pointer error.
This is the code of my bpmn20.xml, can anybody tell me what is wrong ? because I've read the user guide, and several posts about errors when defining and passing process variables from forms to WS, I've tried several ways defining the I/O and now with the simplistic approach, but no one seems to work.
<?xml version="1.0" encoding="UTF-8"?>
<definitions
id="definitions"
xmlns="http://www.omg.org/spec/BPMN/20100524/MODEL"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:activiti="http://activiti.org/bpmn"
xmlns:bpmndi="http://www.omg.org/spec/BPMN/20100524/DI"
xmlns
mgdc="http://www.omg.org/spec/DD/20100524/DC"
xmlnsmgdi="http://www.omg.org/spec/DD/20100524/DI"
typeLanguage="http://www.w3.org/2001/XMLSchema"
targetNamespace="org.activiti.engine.impl.webservice"
xmlns:tns = "org.activiti.engine.impl.webservice"
xmlns:echo = "http://echo/">
<import importType="http://schemas.xmlsoap.org/wsdl/"
location="http://localhost:8181/pruWS/Echo2Service?wsdl"
namespace="http://echo/" />
<process id="helloworld" name="helloworld">
<startEvent id="startevent1" name="Start"></startEvent>
<userTask id="usertaskInput" name="Get input message" activiti:assignee="kermit">
<extensionElements>
<activiti:formProperty id="input" name="Inputmessage" type="string" variable="input" required="true" readable="true" writable="true">
</activiti:formProperty>
</extensionElements>
</userTask>
<serviceTask id="webServiceTask" name="Call WS" implementation="##WebService" operationRef="tns:echoOperation">
<dataInputAssociation>
<sourceRef>input</sourceRef><!– name of an Activiti variable –>
<targetRef>arg0</targetRef><!– name of an element of the input message –>
</dataInputAssociation>
<dataOutputAssociation>
<sourceRef>return</sourceRef><!– name of an element of the output message –>
<targetRef>output</targetRef><!– name of an Activiti variable –>
</dataOutputAssociation>
</serviceTask>
<userTask id="usertask1" name="Show output message" activiti:assignee="kermit">
<extensionElements>
<activiti:formProperty id="output" name="Outputmessage" type="string" variable="output" required="false" readable="true" writable="false">
</activiti:formProperty>
</extensionElements>
</userTask>
<endEvent id="endevent1" name="End"></endEvent>
<sequenceFlow id="flow1" name="" sourceRef="startevent1" targetRef="usertaskInput"></sequenceFlow>
<sequenceFlow id="flow2" name="" sourceRef="usertaskInput" targetRef="webServiceTask"></sequenceFlow>
<sequenceFlow id="flow3" name="" sourceRef="webServiceTask" targetRef="usertask1"></sequenceFlow>
<sequenceFlow id="flow4" name="" sourceRef="usertask1" targetRef="endevent1"></sequenceFlow>
</process>
<itemDefinition id="input" structureRef="string" />
<itemDefinition id="arg0" structureRef="string" />
<itemDefinition id="return" structureRef="string" />
<itemDefinition id="output" structureRef="string" />
<!– Interface: implementationRef = QName of WSDL Port Type –>
<interface name="Echo Interface" implementationRef = "echo:Echo2" >
<!– Operation: implementationRef = QName of WSDL Operation –>
<operation id="echoOperation" name="Echo Operation" implementationRef="echo:echo">
<inMessageRef>tns:echo</inMessageRef>
<outMessageRef>tns:echoResponse</outMessageRef>
</operation>
</interface>
<message id="echo" itemRef="tns:echoItemRequest" />
<message id="echoResponse" itemRef="tns:echoItemResponse" />
<itemDefinition id="echoItemRequest" structureRef="tns:echo" /><!– QName of input element –>
<itemDefinition id="echoItemResponse" structureRef="tns:ecoResponse" /><!– QName of output element –>
<bpmndi:BPMNDiagram id="BPMNDiagram_helloworld">
<bpmndi:BPMNPlane bpmnElement="helloworld" id="BPMNPlane_helloworld">
<bpmndi:BPMNShape bpmnElement="startevent1" id="BPMNShape_startevent1">
<omgdc:Bounds height="35" width="35" x="50" y="90"></omgdc:Bounds>
</bpmndi:BPMNShape>
<bpmndi:BPMNShape bpmnElement="usertaskInput" id="BPMNShape_usertaskInput">
<omgdc:Bounds height="55" width="105" x="130" y="80"></omgdc:Bounds>
</bpmndi:BPMNShape>
<bpmndi:BPMNShape bpmnElement="webServiceTask" id="BPMNShape_webServiceTask">
<omgdc:Bounds height="55" width="105" x="280" y="80"></omgdc:Bounds>
</bpmndi:BPMNShape>
<bpmndi:BPMNShape bpmnElement="usertask1" id="BPMNShape_usertask1">
<omgdc:Bounds height="55" width="105" x="430" y="80"></omgdc:Bounds>
</bpmndi:BPMNShape>
<bpmndi:BPMNShape bpmnElement="endevent1" id="BPMNShape_endevent1">
<omgdc:Bounds height="35" width="35" x="570" y="90"></omgdc:Bounds>
</bpmndi:BPMNShape>
<bpmndi:BPMNEdge bpmnElement="flow1" id="BPMNEdge_flow1">
<omgdi:waypoint x="85" y="107"></omgdi:waypoint>
<omgdi:waypoint x="130" y="107"></omgdi:waypoint>
</bpmndi:BPMNEdge>
<bpmndi:BPMNEdge bpmnElement="flow2" id="BPMNEdge_flow2">
<omgdi:waypoint x="235" y="107"></omgdi:waypoint>
<omgdi:waypoint x="280" y="107"></omgdi:waypoint>
</bpmndi:BPMNEdge>
<bpmndi:BPMNEdge bpmnElement="flow3" id="BPMNEdge_flow3">
<omgdi:waypoint x="385" y="107"></omgdi:waypoint>
<omgdi:waypoint x="430" y="107"></omgdi:waypoint>
</bpmndi:BPMNEdge>
<bpmndi:BPMNEdge bpmnElement="flow4" id="BPMNEdge_flow4">
<omgdi:waypoint x="535" y="107"></omgdi:waypoint>
<omgdi:waypoint x="570" y="107"></omgdi:waypoint>
</bpmndi:BPMNEdge>
</bpmndi:BPMNPlane>
</bpmndi:BPMNDiagram>
</definitions>
and this is the WSDL:
<?xml version="1.0" encoding="UTF-8"?>
<!– Published by JAX-WS RI at http://jax-ws.dev.java.net. RI's version is JAX-WS RI 2.1.3.3-hudson-757-SNAPSHOT. –>
<!– Generated by JAX-WS RI at http://jax-ws.dev.java.net. RI's version is JAX-WS RI 2.1.3.3-hudson-757-SNAPSHOT. –>
<definitions xmlns:wsu="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd" xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/" xmlns:tns="http://echo/" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns="http://schemas.xmlsoap.org/wsdl/" targetNamespace="http://echo/" name="Echo2Service">
<types>
<xsd:schema>
<xs:schema xmlns:tns="http://echo/" xmlns:xs="http://www.w3.org/2001/XMLSchema" version="1.0" targetNamespace="http://echo/">
<xs:element name="echo" type="tns:echo" />
<xs:element name="echoResponse" type="tns:echoResponse" />
<xs:complexType name="echo">
<xs:sequence>
<xs:element name="arg0" type="xs:string" minOccurs="0" />
</xs:sequence>
</xs:complexType>
<xs:complexType name="echoResponse">
<xs:sequence>
<xs:element name="return" type="xs:string" minOccurs="0" />
</xs:sequence>
</xs:complexType>
</xs:schema>
</xsd:schema>
</types>
<message name="echo">
<part name="parameters" element="tns:echo"/>
</message>
<message name="echoResponse">
<part name="parameters" element="tns:echoResponse"/>
</message>
<portType name="Echo2">
<operation name="echo">
<input message="tns:echo"/>
<output message="tns:echoResponse"/>
</operation>
</portType>
<binding name="Echo2PortBinding" type="tns:Echo2">
<soap:binding transport="http://schemas.xmlsoap.org/soap/http" style="document"/>
<operation name="echo">
<soapperation soapAction=""/>
<input>
<soap:body use="literal"/>
</input>
<output>
<soap:body use="literal"/>
</output>
</operation>
</binding>
<service name="Echo2Service">
<port name="Echo2Port" binding="tns:Echo2PortBinding">
<soap:address location="http://localhost:8181/pruWS/Echo2Service'/>
</port>
</service>
</definitions>
and this is the error I get:
12-oct-2011 12:10:44 com.vaadin.Application terminalError
GRAVE: Terminal error:
com.vaadin.event.ListenerMethod$MethodException
Cause: com.vaadin.event.ListenerMethod$MethodException
Cause: java.lang.NullPointerException
at com.vaadin.event.ListenerMethod.receiveEvent(ListenerMethod.java:510)
at com.vaadin.event.EventRouter.fireEvent(EventRouter.java:164)
at com.vaadin.ui.AbstractComponent.fireEvent(AbstractComponent.java:1193)
at com.vaadin.ui.Button.fireClick(Button.java:539)
at com.vaadin.ui.Button.changeVariables(Button.java:206)
at com.vaadin.terminal.gwt.server.AbstractCommunicationManager.handleVar iableBurst(AbstractCommunicationManager.java:1299)
at com.vaadin.terminal.gwt.server.AbstractCommunicationManager.handleVar iables(AbstractCommunicationManager.java:1219)
at com.vaadin.terminal.gwt.server.AbstractCommunicationManager.doHandleU idlRequest(AbstractCommunicationManager.java:735)
at com.vaadin.terminal.gwt.server.CommunicationManager.handleUidlRequest(CommunicationManager.java:296)
at com.vaadin.terminal.gwt.server.AbstractApplicationServlet.service(AbstractApplicationServlet.java:501)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:859)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
at java.lang.Thread.run(Thread.java:619)
Caused by: com.vaadin.event.ListenerMethod$MethodException
Cause: java.lang.NullPointerException
at com.vaadin.event.ListenerMethod.receiveEvent(ListenerMethod.java:510)
at com.vaadin.event.EventRouter.fireEvent(EventRouter.java:164)
at com.vaadin.ui.AbstractComponent.fireEvent(AbstractComponent.java:1193)
at org.activiti.explorer.ui.form.FormPropertiesForm.access$000(FormPropertiesForm.java:45)
at org.activiti.explorer.ui.form.FormPropertiesForm$1.buttonClick(FormPropertiesForm.java:139)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at com.vaadin.event.ListenerMethod.receiveEvent(ListenerMethod.java:490)
… 22 more
Caused by: java.lang.NullPointerException
at org.activiti.engine.impl.bpmn.data.ItemDefinition.createInstance(ItemDefinition.java:44)
at org.activiti.engine.impl.bpmn.webservice.MessageDefinition.createInstance(MessageDefinition.java:35)
at org.activiti.engine.impl.bpmn.behavior.WebServiceActivityBehavior.execute(WebServiceActivityBehavior.java:69)
at org.activiti.engine.impl.pvm.runtime.AtomicOperationActivityExecute.execute(AtomicOperationActivityExecute.java:40)
at org.activiti.engine.impl.interceptor.CommandContext.performOperation(CommandContext.java:76)
at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:481)
at org.activiti.engine.impl.pvm.runtime.AtomicOperationTransitionNotifyL
istenerStart.eventNotificationsCompleted(AtomicOperationTransitionNotifyListenerStart.java:48)
at org.activiti.engine.impl.pvm.runtime.AbstractEventAtomicOperation.exe cute(AbstractEventAtomicOperation.java:52)
at org.activiti.engine.impl.interceptor.CommandContext.performOperation(CommandContext.java:76)
at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:481)
at org.activiti.engine.impl.pvm.runtime.AbstractEventAtomicOperation.exe
cute(AbstractEventAtomicOperation.java:45)
at org.activiti.engine.impl.interceptor.CommandContext.performOperation(CommandContext.java:76)
at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:481)
at org.activiti.engine.impl.pvm.runtime.AtomicOperationTransitionCreateS cope.execute(AtomicOperationTransitionCreateScope.java:44)
at org.activiti.engine.impl.interceptor.CommandContext.performOperation(CommandContext.java:76)
at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:481)
at org.activiti.engine.impl.pvm.runtime.AtomicOperationTransitionNotifyL
istenerTake.execute(AtomicOperationTransitionNotifyListenerTake.java:61)
at org.activiti.engine.impl.interceptor.CommandContext.performOperation(CommandContext.java:76)
at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:481)
at org.activiti.engine.impl.pvm.runtime.AtomicOperationTransitionDestroy
Scope.execute(AtomicOperationTransitionDestroyScope.java:111)
at org.activiti.engine.impl.interceptor.CommandContext.performOperation(CommandContext.java:76)
at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:481)
at org.activiti.engine.impl.pvm.runtime.AtomicOperationTransitionNotifyL
istenerEnd.eventNotificationsCompleted(AtomicOperationTransitionNotifyListenerEnd.java:36)
at org.activiti.engine.impl.pvm.runtime.AbstractEventAtomicOperation.exe
cute(AbstractEventAtomicOperation.java:52)
at org.activiti.engine.impl.interceptor.CommandContext.performOperation(CommandContext.java:76)
at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:481)
at org.activiti.engine.impl.pvm.runtime.AbstractEventAtomicOperation.exe
cute(AbstractEventAtomicOperation.java:45)
at org.activiti.engine.impl.interceptor.CommandContext.performOperation(CommandContext.java:76)
at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:481)
at org.activiti.engine.impl.persistence.entity.ExecutionEntity.take(ExecutionEntity.java:326)
at org.activiti.engine.impl.bpmn.behavior.BpmnActivityBehavior.performOu
tgoingBehavior(BpmnActivityBehavior.java:92)
at org.activiti.engine.impl.bpmn.behavior.BpmnActivityBehavior.performDe
faultOutgoingBehavior(BpmnActivityBehavior.java:49)
at org.activiti.engine.impl.bpmn.behavior.FlowNodeActivityBehavior.leave(FlowNodeActivityBehavior.java:44)
at org.activiti.engine.impl.bpmn.behavior.AbstractBpmnActivityBehavior.leave(AbstractBpmnActivityBehavior.java:37)
at org.activiti.engine.impl.bpmn.behavior.UserTaskActivityBehavior.signal(UserTaskActivityBehavior.java:74)
at org.activiti.engine.impl.persistence.entity.ExecutionEntity.signal(ExecutionEntity.java:309)
at org.activiti.engine.impl.persistence.entity.TaskEntity.complete(TaskEntity.java:149)
at org.activiti.engine.impl.cmd.SubmitTaskFormCmd.execute(SubmitTaskFormCmd.java:74)
at org.activiti.engine.impl.interceptor.CommandExecutorImpl.execute(CommandExecutorImpl.java:24)
at org.activiti.engine.impl.interceptor.CommandContextInterceptor.execute(CommandContextInterceptor.java:42)
at org.activiti.spring.SpringTransactionInterceptor$1.doInTransaction(SpringTransactionInterceptor.java:42)
at org.springframework.transaction.support.TransactionTemplate.execute(TransactionTemplate.java:130)
at org.activiti.spring.SpringTransactionInterceptor.execute(SpringTransactionInterceptor.java:40)
at org.activiti.engine.impl.interceptor.LogInterceptor.execute(LogInterceptor.java:33)
at org.activiti.engine.impl.FormServiceImpl.submitTaskFormData(FormServiceImpl.java:68)
at org.activiti.explorer.ui.task.TaskDetailPanel$4.handleFormSubmit(TaskDetailPanel.java:306)
at org.activiti.explorer.ui.form.FormPropertiesEventListener.componentEvent(FormPropertiesEventListener.java:39)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at com.vaadin.event.ListenerMethod.receiveEvent(ListenerMethod.java:490)
… 31 more
thanks.
regards, Vero
This is the code of my bpmn20.xml, can anybody tell me what is wrong ? because I've read the user guide, and several posts about errors when defining and passing process variables from forms to WS, I've tried several ways defining the I/O and now with the simplistic approach, but no one seems to work.
<?xml version="1.0" encoding="UTF-8"?>
<definitions
id="definitions"
xmlns="http://www.omg.org/spec/BPMN/20100524/MODEL"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:activiti="http://activiti.org/bpmn"
xmlns:bpmndi="http://www.omg.org/spec/BPMN/20100524/DI"
xmlns
mgdc="http://www.omg.org/spec/DD/20100524/DC" xmlns
mgdi="http://www.omg.org/spec/DD/20100524/DI" typeLanguage="http://www.w3.org/2001/XMLSchema"
targetNamespace="org.activiti.engine.impl.webservice"
xmlns:tns = "org.activiti.engine.impl.webservice"
xmlns:echo = "http://echo/">
<import importType="http://schemas.xmlsoap.org/wsdl/"
location="http://localhost:8181/pruWS/Echo2Service?wsdl"
namespace="http://echo/" />
<process id="helloworld" name="helloworld">
<startEvent id="startevent1" name="Start"></startEvent>
<userTask id="usertaskInput" name="Get input message" activiti:assignee="kermit">
<extensionElements>
<activiti:formProperty id="input" name="Inputmessage" type="string" variable="input" required="true" readable="true" writable="true">
</activiti:formProperty>
</extensionElements>
</userTask>
<serviceTask id="webServiceTask" name="Call WS" implementation="##WebService" operationRef="tns:echoOperation">
<dataInputAssociation>
<sourceRef>input</sourceRef><!– name of an Activiti variable –>
<targetRef>arg0</targetRef><!– name of an element of the input message –>
</dataInputAssociation>
<dataOutputAssociation>
<sourceRef>return</sourceRef><!– name of an element of the output message –>
<targetRef>output</targetRef><!– name of an Activiti variable –>
</dataOutputAssociation>
</serviceTask>
<userTask id="usertask1" name="Show output message" activiti:assignee="kermit">
<extensionElements>
<activiti:formProperty id="output" name="Outputmessage" type="string" variable="output" required="false" readable="true" writable="false">
</activiti:formProperty>
</extensionElements>
</userTask>
<endEvent id="endevent1" name="End"></endEvent>
<sequenceFlow id="flow1" name="" sourceRef="startevent1" targetRef="usertaskInput"></sequenceFlow>
<sequenceFlow id="flow2" name="" sourceRef="usertaskInput" targetRef="webServiceTask"></sequenceFlow>
<sequenceFlow id="flow3" name="" sourceRef="webServiceTask" targetRef="usertask1"></sequenceFlow>
<sequenceFlow id="flow4" name="" sourceRef="usertask1" targetRef="endevent1"></sequenceFlow>
</process>
<itemDefinition id="input" structureRef="string" />
<itemDefinition id="arg0" structureRef="string" />
<itemDefinition id="return" structureRef="string" />
<itemDefinition id="output" structureRef="string" />
<!– Interface: implementationRef = QName of WSDL Port Type –>
<interface name="Echo Interface" implementationRef = "echo:Echo2" >
<!– Operation: implementationRef = QName of WSDL Operation –>
<operation id="echoOperation" name="Echo Operation" implementationRef="echo:echo">
<inMessageRef>tns:echo</inMessageRef>
<outMessageRef>tns:echoResponse</outMessageRef>
</operation>
</interface>
<message id="echo" itemRef="tns:echoItemRequest" />
<message id="echoResponse" itemRef="tns:echoItemResponse" />
<itemDefinition id="echoItemRequest" structureRef="tns:echo" /><!– QName of input element –>
<itemDefinition id="echoItemResponse" structureRef="tns:ecoResponse" /><!– QName of output element –>
<bpmndi:BPMNDiagram id="BPMNDiagram_helloworld">
<bpmndi:BPMNPlane bpmnElement="helloworld" id="BPMNPlane_helloworld">
<bpmndi:BPMNShape bpmnElement="startevent1" id="BPMNShape_startevent1">
<omgdc:Bounds height="35" width="35" x="50" y="90"></omgdc:Bounds>
</bpmndi:BPMNShape>
<bpmndi:BPMNShape bpmnElement="usertaskInput" id="BPMNShape_usertaskInput">
<omgdc:Bounds height="55" width="105" x="130" y="80"></omgdc:Bounds>
</bpmndi:BPMNShape>
<bpmndi:BPMNShape bpmnElement="webServiceTask" id="BPMNShape_webServiceTask">
<omgdc:Bounds height="55" width="105" x="280" y="80"></omgdc:Bounds>
</bpmndi:BPMNShape>
<bpmndi:BPMNShape bpmnElement="usertask1" id="BPMNShape_usertask1">
<omgdc:Bounds height="55" width="105" x="430" y="80"></omgdc:Bounds>
</bpmndi:BPMNShape>
<bpmndi:BPMNShape bpmnElement="endevent1" id="BPMNShape_endevent1">
<omgdc:Bounds height="35" width="35" x="570" y="90"></omgdc:Bounds>
</bpmndi:BPMNShape>
<bpmndi:BPMNEdge bpmnElement="flow1" id="BPMNEdge_flow1">
<omgdi:waypoint x="85" y="107"></omgdi:waypoint>
<omgdi:waypoint x="130" y="107"></omgdi:waypoint>
</bpmndi:BPMNEdge>
<bpmndi:BPMNEdge bpmnElement="flow2" id="BPMNEdge_flow2">
<omgdi:waypoint x="235" y="107"></omgdi:waypoint>
<omgdi:waypoint x="280" y="107"></omgdi:waypoint>
</bpmndi:BPMNEdge>
<bpmndi:BPMNEdge bpmnElement="flow3" id="BPMNEdge_flow3">
<omgdi:waypoint x="385" y="107"></omgdi:waypoint>
<omgdi:waypoint x="430" y="107"></omgdi:waypoint>
</bpmndi:BPMNEdge>
<bpmndi:BPMNEdge bpmnElement="flow4" id="BPMNEdge_flow4">
<omgdi:waypoint x="535" y="107"></omgdi:waypoint>
<omgdi:waypoint x="570" y="107"></omgdi:waypoint>
</bpmndi:BPMNEdge>
</bpmndi:BPMNPlane>
</bpmndi:BPMNDiagram>
</definitions>
and this is the WSDL:
<?xml version="1.0" encoding="UTF-8"?>
<!– Published by JAX-WS RI at http://jax-ws.dev.java.net. RI's version is JAX-WS RI 2.1.3.3-hudson-757-SNAPSHOT. –>
<!– Generated by JAX-WS RI at http://jax-ws.dev.java.net. RI's version is JAX-WS RI 2.1.3.3-hudson-757-SNAPSHOT. –>
<definitions xmlns:wsu="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd" xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/" xmlns:tns="http://echo/" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns="http://schemas.xmlsoap.org/wsdl/" targetNamespace="http://echo/" name="Echo2Service">
<types>
<xsd:schema>
<xs:schema xmlns:tns="http://echo/" xmlns:xs="http://www.w3.org/2001/XMLSchema" version="1.0" targetNamespace="http://echo/">
<xs:element name="echo" type="tns:echo" />
<xs:element name="echoResponse" type="tns:echoResponse" />
<xs:complexType name="echo">
<xs:sequence>
<xs:element name="arg0" type="xs:string" minOccurs="0" />
</xs:sequence>
</xs:complexType>
<xs:complexType name="echoResponse">
<xs:sequence>
<xs:element name="return" type="xs:string" minOccurs="0" />
</xs:sequence>
</xs:complexType>
</xs:schema>
</xsd:schema>
</types>
<message name="echo">
<part name="parameters" element="tns:echo"/>
</message>
<message name="echoResponse">
<part name="parameters" element="tns:echoResponse"/>
</message>
<portType name="Echo2">
<operation name="echo">
<input message="tns:echo"/>
<output message="tns:echoResponse"/>
</operation>
</portType>
<binding name="Echo2PortBinding" type="tns:Echo2">
<soap:binding transport="http://schemas.xmlsoap.org/soap/http" style="document"/>
<operation name="echo">
<soap
peration soapAction=""/><input>
<soap:body use="literal"/>
</input>
<output>
<soap:body use="literal"/>
</output>
</operation>
</binding>
<service name="Echo2Service">
<port name="Echo2Port" binding="tns:Echo2PortBinding">
<soap:address location="http://localhost:8181/pruWS/Echo2Service'/>
</port>
</service>
</definitions>
and this is the error I get:
12-oct-2011 12:10:44 com.vaadin.Application terminalError
GRAVE: Terminal error:
com.vaadin.event.ListenerMethod$MethodException
Cause: com.vaadin.event.ListenerMethod$MethodException
Cause: java.lang.NullPointerException
at com.vaadin.event.ListenerMethod.receiveEvent(ListenerMethod.java:510)
at com.vaadin.event.EventRouter.fireEvent(EventRouter.java:164)
at com.vaadin.ui.AbstractComponent.fireEvent(AbstractComponent.java:1193)
at com.vaadin.ui.Button.fireClick(Button.java:539)
at com.vaadin.ui.Button.changeVariables(Button.java:206)
at com.vaadin.terminal.gwt.server.AbstractCommunicationManager.handleVar iableBurst(AbstractCommunicationManager.java:1299)
at com.vaadin.terminal.gwt.server.AbstractCommunicationManager.handleVar iables(AbstractCommunicationManager.java:1219)
at com.vaadin.terminal.gwt.server.AbstractCommunicationManager.doHandleU idlRequest(AbstractCommunicationManager.java:735)
at com.vaadin.terminal.gwt.server.CommunicationManager.handleUidlRequest(CommunicationManager.java:296)
at com.vaadin.terminal.gwt.server.AbstractApplicationServlet.service(AbstractApplicationServlet.java:501)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:859)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
at java.lang.Thread.run(Thread.java:619)
Caused by: com.vaadin.event.ListenerMethod$MethodException
Cause: java.lang.NullPointerException
at com.vaadin.event.ListenerMethod.receiveEvent(ListenerMethod.java:510)
at com.vaadin.event.EventRouter.fireEvent(EventRouter.java:164)
at com.vaadin.ui.AbstractComponent.fireEvent(AbstractComponent.java:1193)
at org.activiti.explorer.ui.form.FormPropertiesForm.access$000(FormPropertiesForm.java:45)
at org.activiti.explorer.ui.form.FormPropertiesForm$1.buttonClick(FormPropertiesForm.java:139)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at com.vaadin.event.ListenerMethod.receiveEvent(ListenerMethod.java:490)
… 22 more
Caused by: java.lang.NullPointerException
at org.activiti.engine.impl.bpmn.data.ItemDefinition.createInstance(ItemDefinition.java:44)
at org.activiti.engine.impl.bpmn.webservice.MessageDefinition.createInstance(MessageDefinition.java:35)
at org.activiti.engine.impl.bpmn.behavior.WebServiceActivityBehavior.execute(WebServiceActivityBehavior.java:69)
at org.activiti.engine.impl.pvm.runtime.AtomicOperationActivityExecute.execute(AtomicOperationActivityExecute.java:40)
at org.activiti.engine.impl.interceptor.CommandContext.performOperation(CommandContext.java:76)
at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:481)
at org.activiti.engine.impl.pvm.runtime.AtomicOperationTransitionNotifyL
istenerStart.eventNotificationsCompleted(AtomicOperationTransitionNotifyListenerStart.java:48)
at org.activiti.engine.impl.pvm.runtime.AbstractEventAtomicOperation.exe cute(AbstractEventAtomicOperation.java:52)
at org.activiti.engine.impl.interceptor.CommandContext.performOperation(CommandContext.java:76)
at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:481)
at org.activiti.engine.impl.pvm.runtime.AbstractEventAtomicOperation.exe
cute(AbstractEventAtomicOperation.java:45)
at org.activiti.engine.impl.interceptor.CommandContext.performOperation(CommandContext.java:76)
at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:481)
at org.activiti.engine.impl.pvm.runtime.AtomicOperationTransitionCreateS cope.execute(AtomicOperationTransitionCreateScope.java:44)
at org.activiti.engine.impl.interceptor.CommandContext.performOperation(CommandContext.java:76)
at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:481)
at org.activiti.engine.impl.pvm.runtime.AtomicOperationTransitionNotifyL
istenerTake.execute(AtomicOperationTransitionNotifyListenerTake.java:61)
at org.activiti.engine.impl.interceptor.CommandContext.performOperation(CommandContext.java:76)
at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:481)
at org.activiti.engine.impl.pvm.runtime.AtomicOperationTransitionDestroy
Scope.execute(AtomicOperationTransitionDestroyScope.java:111)
at org.activiti.engine.impl.interceptor.CommandContext.performOperation(CommandContext.java:76)
at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:481)
at org.activiti.engine.impl.pvm.runtime.AtomicOperationTransitionNotifyL
istenerEnd.eventNotificationsCompleted(AtomicOperationTransitionNotifyListenerEnd.java:36)
at org.activiti.engine.impl.pvm.runtime.AbstractEventAtomicOperation.exe
cute(AbstractEventAtomicOperation.java:52)
at org.activiti.engine.impl.interceptor.CommandContext.performOperation(CommandContext.java:76)
at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:481)
at org.activiti.engine.impl.pvm.runtime.AbstractEventAtomicOperation.exe
cute(AbstractEventAtomicOperation.java:45)
at org.activiti.engine.impl.interceptor.CommandContext.performOperation(CommandContext.java:76)
at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:481)
at org.activiti.engine.impl.persistence.entity.ExecutionEntity.take(ExecutionEntity.java:326)
at org.activiti.engine.impl.bpmn.behavior.BpmnActivityBehavior.performOu
tgoingBehavior(BpmnActivityBehavior.java:92)
at org.activiti.engine.impl.bpmn.behavior.BpmnActivityBehavior.performDe
faultOutgoingBehavior(BpmnActivityBehavior.java:49)
at org.activiti.engine.impl.bpmn.behavior.FlowNodeActivityBehavior.leave(FlowNodeActivityBehavior.java:44)
at org.activiti.engine.impl.bpmn.behavior.AbstractBpmnActivityBehavior.leave(AbstractBpmnActivityBehavior.java:37)
at org.activiti.engine.impl.bpmn.behavior.UserTaskActivityBehavior.signal(UserTaskActivityBehavior.java:74)
at org.activiti.engine.impl.persistence.entity.ExecutionEntity.signal(ExecutionEntity.java:309)
at org.activiti.engine.impl.persistence.entity.TaskEntity.complete(TaskEntity.java:149)
at org.activiti.engine.impl.cmd.SubmitTaskFormCmd.execute(SubmitTaskFormCmd.java:74)
at org.activiti.engine.impl.interceptor.CommandExecutorImpl.execute(CommandExecutorImpl.java:24)
at org.activiti.engine.impl.interceptor.CommandContextInterceptor.execute(CommandContextInterceptor.java:42)
at org.activiti.spring.SpringTransactionInterceptor$1.doInTransaction(SpringTransactionInterceptor.java:42)
at org.springframework.transaction.support.TransactionTemplate.execute(TransactionTemplate.java:130)
at org.activiti.spring.SpringTransactionInterceptor.execute(SpringTransactionInterceptor.java:40)
at org.activiti.engine.impl.interceptor.LogInterceptor.execute(LogInterceptor.java:33)
at org.activiti.engine.impl.FormServiceImpl.submitTaskFormData(FormServiceImpl.java:68)
at org.activiti.explorer.ui.task.TaskDetailPanel$4.handleFormSubmit(TaskDetailPanel.java:306)
at org.activiti.explorer.ui.form.FormPropertiesEventListener.componentEvent(FormPropertiesEventListener.java:39)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at com.vaadin.event.ListenerMethod.receiveEvent(ListenerMethod.java:490)
… 31 more
thanks.
regards, Vero
Hi, I've managed to get the WS calling work, but I am not able to display the WS response. This is the new code for my activiti process, can anybody tell me if I am missing something ?
the WS response variable is assigned to the output process variable and I want to display the output variable value.
I have not found in the examples a user task showing a response variable, only accesing objects created but I do not want to create any objects to hold the variables values but to access them directly in the process execution.
<?xml version="1.0" encoding="UTF-8"?>
<definitions
id="definitions"
xmlns="http://www.omg.org/spec/BPMN/20100524/MODEL"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:activiti="http://activiti.org/bpmn"
xmlns:bpmndi="http://www.omg.org/spec/BPMN/20100524/DI"
xmlnsmgdc="http://www.omg.org/spec/DD/20100524/DC"
xmlnsmgdi="http://www.omg.org/spec/DD/20100524/DI"
typeLanguage="http://www.w3.org/2001/XMLSchema"
targetNamespace="org.activiti.engine.impl.webservice"
xmlns:tns = "org.activiti.engine.impl.webservice"
xmlns:echo = "http://echo/">
<!–xmlns:tns = "org.activiti.enginge.impl.webservice"–>
<!– targetNamespace="org.activiti.enginge.impl.webservice" –>
<import importType="http://schemas.xmlsoap.org/wsdl/"
location="http://localhost:8181/pruWS/Echo2Service?wsdl"
namespace="http://echo/" />
<message id="echo" itemRef="tns:echoItemRequest" />
<message id="echoResponse" itemRef="tns:echoItemResponse" />
<itemDefinition id="echoItemRequest" structureRef="echo:echo" />
<itemDefinition id="echoItemResponse" structureRef="echo:echoResponse" />
<!– Interface: implementationRef = QName of WSDL Port Type –>
<interface name="Echo Interface" implementationRef = "echo:Echo2" >
<!– Operation: implementationRef = QName of WSDL Operation –>
<operation id="echoOperation" name="Echo Operation" implementationRef="echo:echo">
<inMessageRef>tns:echo</inMessageRef>
<outMessageRef>tns:echoResponse</outMessageRef>
</operation>
</interface>
<itemDefinition id="input" structureRef="string" />
<itemDefinition id="arg0" structureRef="string" />
<itemDefinition id="return" structureRef="string" />
<itemDefinition id="output" structureRef="string" />
<process id="helloworld" name="helloworld">
<startEvent id="startevent1" name="Start"></startEvent>
<userTask id="usertaskInput" name="Get input message" activiti:assignee="kermit">
<extensionElements>
<activiti:formProperty id="input" name="Input message" required="true" type="string"></activiti:formProperty>
</extensionElements>
</userTask>
<serviceTask id="webServiceTask" name="Call WS" implementation="##WebService" operationRef="tns:echoOperation">
<!– The BPMN 2.0 Meta Model requires an Input/Output Specification –>
<ioSpecification>
<dataInput itemSubjectRef="tns:echoItemRequest" id="dataInputOfServiceTask" />
<dataOutput itemSubjectRef="tns:echoItemResponse" id="dataOutputOfServiceTask" />
<inputSet>
<dataInputRefs>dataInputOfServiceTask</dataInputRefs>
</inputSet>
<outputSet>
<dataOutputRefs>dataOutputOfServiceTask</dataOutputRefs>
</outputSet>
</ioSpecification>
<dataInputAssociation>
<sourceRef>input</sourceRef>
<targetRef>arg0</targetRef>
</dataInputAssociation>
<dataOutputAssociation>
<sourceRef>return</sourceRef>
<targetRef>output</targetRef>
</dataOutputAssociation>
</serviceTask>
<!– Interface: implementationRef = QName of WSDL Port Type –>
<userTask id="usertask1" name="Show output message" activiti:assignee="kermit">
<documentation>
Response received from WS copied to output: ${output} yes or no ?
</documentation>
<extensionElements>
<activiti:formProperty id="output" name="Output message" type ="string" expression="${output}" writable="false"></activiti:formProperty>
</extensionElements>
</userTask>
<endEvent id="endevent1" name="End"></endEvent>
<sequenceFlow id="flow1" name="" sourceRef="startevent1" targetRef="usertaskInput"></sequenceFlow>
<sequenceFlow id="flow2" name="" sourceRef="usertaskInput" targetRef="webServiceTask"></sequenceFlow>
<sequenceFlow id="flow3" name="" sourceRef="webServiceTask" targetRef="usertask1"></sequenceFlow>
<sequenceFlow id="flow4" name="" sourceRef="usertask1" targetRef="endevent1"></sequenceFlow>
</process>
</definitions>
thank you,
regards, Vero
the WS response variable is assigned to the output process variable and I want to display the output variable value.
I have not found in the examples a user task showing a response variable, only accesing objects created but I do not want to create any objects to hold the variables values but to access them directly in the process execution.
<?xml version="1.0" encoding="UTF-8"?>
<definitions
id="definitions"
xmlns="http://www.omg.org/spec/BPMN/20100524/MODEL"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:activiti="http://activiti.org/bpmn"
xmlns:bpmndi="http://www.omg.org/spec/BPMN/20100524/DI"
xmlns
mgdc="http://www.omg.org/spec/DD/20100524/DC" xmlns
mgdi="http://www.omg.org/spec/DD/20100524/DI" typeLanguage="http://www.w3.org/2001/XMLSchema"
targetNamespace="org.activiti.engine.impl.webservice"
xmlns:tns = "org.activiti.engine.impl.webservice"
xmlns:echo = "http://echo/">
<!–xmlns:tns = "org.activiti.enginge.impl.webservice"–>
<!– targetNamespace="org.activiti.enginge.impl.webservice" –>
<import importType="http://schemas.xmlsoap.org/wsdl/"
location="http://localhost:8181/pruWS/Echo2Service?wsdl"
namespace="http://echo/" />
<message id="echo" itemRef="tns:echoItemRequest" />
<message id="echoResponse" itemRef="tns:echoItemResponse" />
<itemDefinition id="echoItemRequest" structureRef="echo:echo" />
<itemDefinition id="echoItemResponse" structureRef="echo:echoResponse" />
<!– Interface: implementationRef = QName of WSDL Port Type –>
<interface name="Echo Interface" implementationRef = "echo:Echo2" >
<!– Operation: implementationRef = QName of WSDL Operation –>
<operation id="echoOperation" name="Echo Operation" implementationRef="echo:echo">
<inMessageRef>tns:echo</inMessageRef>
<outMessageRef>tns:echoResponse</outMessageRef>
</operation>
</interface>
<itemDefinition id="input" structureRef="string" />
<itemDefinition id="arg0" structureRef="string" />
<itemDefinition id="return" structureRef="string" />
<itemDefinition id="output" structureRef="string" />
<process id="helloworld" name="helloworld">
<startEvent id="startevent1" name="Start"></startEvent>
<userTask id="usertaskInput" name="Get input message" activiti:assignee="kermit">
<extensionElements>
<activiti:formProperty id="input" name="Input message" required="true" type="string"></activiti:formProperty>
</extensionElements>
</userTask>
<serviceTask id="webServiceTask" name="Call WS" implementation="##WebService" operationRef="tns:echoOperation">
<!– The BPMN 2.0 Meta Model requires an Input/Output Specification –>
<ioSpecification>
<dataInput itemSubjectRef="tns:echoItemRequest" id="dataInputOfServiceTask" />
<dataOutput itemSubjectRef="tns:echoItemResponse" id="dataOutputOfServiceTask" />
<inputSet>
<dataInputRefs>dataInputOfServiceTask</dataInputRefs>
</inputSet>
<outputSet>
<dataOutputRefs>dataOutputOfServiceTask</dataOutputRefs>
</outputSet>
</ioSpecification>
<dataInputAssociation>
<sourceRef>input</sourceRef>
<targetRef>arg0</targetRef>
</dataInputAssociation>
<dataOutputAssociation>
<sourceRef>return</sourceRef>
<targetRef>output</targetRef>
</dataOutputAssociation>
</serviceTask>
<!– Interface: implementationRef = QName of WSDL Port Type –>
<userTask id="usertask1" name="Show output message" activiti:assignee="kermit">
<documentation>
Response received from WS copied to output: ${output} yes or no ?
</documentation>
<extensionElements>
<activiti:formProperty id="output" name="Output message" type ="string" expression="${output}" writable="false"></activiti:formProperty>
</extensionElements>
</userTask>
<endEvent id="endevent1" name="End"></endEvent>
<sequenceFlow id="flow1" name="" sourceRef="startevent1" targetRef="usertaskInput"></sequenceFlow>
<sequenceFlow id="flow2" name="" sourceRef="usertaskInput" targetRef="webServiceTask"></sequenceFlow>
<sequenceFlow id="flow3" name="" sourceRef="webServiceTask" targetRef="usertask1"></sequenceFlow>
<sequenceFlow id="flow4" name="" sourceRef="usertask1" targetRef="endevent1"></sequenceFlow>
</process>
</definitions>
thank you,
regards, Vero
