How to use the SOAP service addSequence from WSO2 ESB 4.7

Question

I'm trying to use the SOAP service addSequence from WSO2 ESB 4.7 I'm using the SequenceAdminService.wsdl file found at :

https://ip:9443/services/SequenceAdminService?wsdl

In this WSDL, the input parameter of the addSequence method has Object as type. I have a look to the server code, WSO2 ESB is attending a OMElement for the addSequence service.

So I added this dependency in my pom.xml :

<dependency>
  <groupId>org.apache.ws.commons.axiom.wso2</groupId>
  <artifactId>axiom</artifactId>
  <version>1.2.11.wso2v2</version>
</dependency>

And modified my code like this :

String sequenceXml = this.configTemplate.generateAuthentificationSequence(sequenceName, authorization);

OMElement sequenceElement = null;
try {
sequenceElement = AXIOMUtil.stringToOM(sequenceXml);

} catch (XMLStreamException e) {
    throw (new TechnicalException(e));             
}

try {               
    this.sequenceAdminStub.addSequence(sequenceElement);
} catch (SequenceAdminServiceSequenceEditorException e1) {
    throw (new TechnicalException(e1));
}

But at runtime, I get this Marshalling error :

javax.xml.ws.soap.SOAPFaultException: Marshalling Error: class org.apache.axiom.om.impl.llom.OMElementImpl nor any of its super class is known to this context.
   at com.sun.xml.bind.v2.runtime.JAXBContextImpl.getBeanInfo(JAXBContextImpl.java:594)
   at com.sun.xml.bind.v2.runtime.XMLSerializer.childAsXsiType(XMLSerializer.java:648)
   at com.sun.xml.bind.v2.runtime.property.SingleElementNodeProperty.serializeBody(SingleElementNodeProperty.java:152)
   at com.sun.xml.bind.v2.runtime.ElementBeanInfoImpl$1.serializeBody(ElementBeanInfoImpl.java:157)
   at com.sun.xml.bind.v2.runtime.ElementBeanInfoImpl$1.serializeBody(ElementBeanInfoImpl.java:189)
   at com.sun.xml.bind.v2.runtime.ElementBeanInfoImpl.serializeBody(ElementBeanInfoImpl.java:316)
   at com.sun.xml.bind.v2.runtime.ElementBeanInfoImpl.serializeRoot(ElementBeanInfoImpl.java:323)
   at com.sun.xml.bind.v2.runtime.ElementBeanInfoImpl.serializeRoot(ElementBeanInfoImpl.java:72)
   at com.sun.xml.bind.v2.runtime.property.SingleReferenceNodeProperty.serializeBody(SingleReferenceNodeProperty.java:111)
   at com.sun.xml.bind.v2.runtime.ClassBeanInfoImpl.serializeBody(ClassBeanInfoImpl.java:340)
   at com.sun.xml.bind.v2.runtime.XMLSerializer.childAsXsiType(XMLSerializer.java:696)
   at com.sun.xml.bind.v2.runtime.ElementBeanInfoImpl$1.serializeBody(ElementBeanInfoImpl.java:152)
   at com.sun.xml.bind.v2.runtime.ElementBeanInfoImpl$1.serializeBody(ElementBeanInfoImpl.java:189)
   at com.sun.xml.bind.v2.runtime.ElementBeanInfoImpl.serializeBody(ElementBeanInfoImpl.java:316)
   at com.sun.xml.bind.v2.runtime.ElementBeanInfoImpl.serializeRoot(ElementBeanInfoImpl.java:323)
   at com.sun.xml.bind.v2.runtime.ElementBeanInfoImpl.serializeRoot(ElementBeanInfoImpl.java:72)
   at com.sun.xml.bind.v2.runtime.XMLSerializer.childAsRoot(XMLSerializer.java:494)
   at com.sun.xml.bind.v2.runtime.MarshallerImpl.write(MarshallerImpl.java:315)
   at com.sun.xml.bind.v2.runtime.MarshallerImpl.marshal(MarshallerImpl.java:244)
   at javax.xml.bind.helpers.AbstractMarshallerImpl.marshal(AbstractMarshallerImpl.java:95)
   at org.apache.cxf.jaxb.JAXBEncoderDecoder.writeObject(JAXBEncoderDecoder.java:550)
   at org.apache.cxf.jaxb.JAXBEncoderDecoder.marshall(JAXBEncoderDecoder.java:232)
   at org.apache.cxf.jaxb.io.DataWriterImpl.write(DataWriterImpl.java:169)
   at org.apache.cxf.interceptor.AbstractOutDatabindingInterceptor.writeParts(AbstractOutDatabindingInterceptor.java:110)
   at org.apache.cxf.interceptor.BareOutInterceptor.handleMessage(BareOutInterceptor.java:68)
   at org.apache.cxf.phase.PhaseInterceptorChain.doIntercept(PhaseInterceptorChain.java:263)
   at org.apache.cxf.endpoint.ClientImpl.doInvoke(ClientImpl.java:531)
   at org.apache.cxf.endpoint.ClientImpl.invoke(ClientImpl.java:461)
   at org.apache.cxf.endpoint.ClientImpl.invoke(ClientImpl.java:364)
   at org.apache.cxf.endpoint.ClientImpl.invoke(ClientImpl.java:317)
   at org.apache.cxf.frontend.ClientProxy.invokeSync(ClientProxy.java:88)
   at org.apache.cxf.jaxws.JaxWsClientProxy.invoke(JaxWsClientProxy.java:134)
   at com.sun.proxy.$Proxy55.addSequence(Unknown Source)
   at com.francetelecom.clara.cloud.iaas.wso2esb.infrastructure.Wso2SequenceAdapterImpl.createHttpAuthentSequence(Wso2SequenceAdapterImpl.java:117)
   at com.francetelecom.clara.cloud.iaas.wso2esb.infrastructure.Wso2SequenceAdapterIT.shouldCreateDeleteSequenceAuthent(Wso2SequenceAdapterIT.java:36)

Any idea ? Thanks

Answer 1

You can look at ESB code and see how it handles this.

save_sequence.jsp contains the code used when adding a sequence.

SequenceAdminClient.java

public void addSequence(SequenceMediator sequence) throws SequenceEditorException {
    OMElement sequenceElem = sequence.serialize(null);
    try {
        sequenceAdminStub.addSequence(sequenceElem);
    } catch (Exception e) {
        handleException("Error in adding the sequence with the configuration '"
                + sequenceElem + "'", e);
    }
}

SequenceMediator.java

public OMElement serialize(OMElement parent) {
    OMElement sequence = fac.createOMElement("sequence", synNS);
    if (!anonymous) {
        if (key != null) {
            // Use KeySerializer to serialize Key
            ValueSerializer keySerializer = new ValueSerializer();
            keySerializer.serializeValue(key, XMLConfigConstants.KEY, sequence);
        } else if (name != null) {
            sequence.addAttribute(fac.createOMAttribute(
                    "name", nullNS, name));

            if (errorHandler != null) {
                sequence.addAttribute(fac.createOMAttribute(
                        "onError", nullNS, errorHandler));
            }
            saveTracingState(sequence, this);
            serializeChildren(sequence, getList());
        }

        if (parent != null) {
            parent.addChild(sequence);
        }
    } else {
        if (errorHandler != null) {
            sequence.addAttribute(fac.createOMAttribute(
                    "onError", nullNS, errorHandler));
        }
        saveTracingState(sequence, this);
        serializeChildren(sequence, getList());
        if (parent != null) {
            parent.addChild(sequence);
        }
    }

    if (description != null) {

        OMElement descriptionElem = sequence.getFirstChildWithName(new QName(XMLConfigConstants.SYNAPSE_NAMESPACE, "description"));

        if (descriptionElem != null) {
            descriptionElem.setText(description);
        } else {
            OMElement newDescriptionElem = fac.createOMElement("description", synNS);
            newDescriptionElem.setText(description);
            sequence.addChild(newDescriptionElem);
        }

    }

    return sequence;
}

All related files are at https://svn.wso2.org/repos/wso2/carbon/platform/branches/4.1.0/components/sequence-editor/