rpclitmethodmarshaller.java

来自「开源的axis2框架的源码。用于开发WEBSERVER」· Java 代码 · 共 543 行 · 第 1/2 页

            // Indicate the style and operation element name.  This triggers the message to
            // put the data blocks underneath the operation element
            m.setStyle(Style.RPC);


            QName rpcOpQName = getRPCOperationQName(operationDesc, false);
            String localPart = rpcOpQName.getLocalPart() + "Response";
            QName responseOp =
                    new QName(rpcOpQName.getNamespaceURI(), localPart, rpcOpQName.getPrefix());
            m.setOperationElement(responseOp);

            // Put the return object onto the message
            Class returnType = operationDesc.getResultActualType();
            String returnNS = null;
            String returnLocalPart = null;
            if (operationDesc.isResultHeader()) {
                returnNS = operationDesc.getResultTargetNamespace();
                returnLocalPart = operationDesc.getResultName();
            } else {
                returnNS = "";  // According to WSI BP the body part is unqualified
                returnLocalPart = operationDesc.getResultPartName();
            }

            if (returnType != void.class) {

                // TODO should we allow null if the return is a header?
                //Validate input parameters for operation and make sure no input parameters are null.
                //As per JAXWS Specification section 3.6.2.3 if a null value is passes as an argument 
                //to a method then an implementation MUST throw WebServiceException.
                if (returnObject == null) {
                    throw ExceptionFactory.makeWebServiceException(Messages.getMessage(
                            "NullParamErr1", "Return", operationDesc.getJavaMethodName(),
                            "rpc/lit"));

                }
                Element returnElement = null;
                QName returnQName = new QName(returnNS, returnLocalPart);
                if (marshalDesc.getAnnotationDesc(returnType).hasXmlRootElement()) {
                    returnElement = new Element(returnObject, returnQName);
                } else {
                    returnElement = new Element(returnObject, returnQName, returnType);
                }

                // Use marshalling by java type if necessary
                Class byJavaType = null;
                if (!operationDesc.isResultHeader() ||
                        MethodMarshallerUtils.isNotJAXBRootElement(returnType, marshalDesc)) {
                    byJavaType = returnType;
                }
                MethodMarshallerUtils.toMessage(returnElement,
                                                returnType,
                                                operationDesc.isListType(),
                                                marshalDesc,
                                                m,
                                                byJavaType,
                                                operationDesc.isResultHeader());
            }

            // Convert the holder objects into a list of JAXB objects for marshalling
            List<PDElement> pdeList =
                    MethodMarshallerUtils.getPDElements(marshalDesc,
                                                        pds,
                                                        signatureArgs,
                                                        false,  // output
                                                        false,
                                                        true);   // use partName since this is rpc/lit

            // We want to use "by Java Type" marshalling for 
            // all body elements and all non-JAXB objects
            for (PDElement pde : pdeList) {
                ParameterDescription pd = pde.getParam();
                Class type = pd.getParameterActualType();
                if (!pd.isHeader() ||
                        MethodMarshallerUtils.isNotJAXBRootElement(type, marshalDesc)) {
                    pde.setByJavaTypeClass(type);
                }
            }
            // TODO Should we check for null output body values?  Should we check for null output header values ?
            // Put values onto the message
            MethodMarshallerUtils.toMessage(pdeList, m, packages);

            return m;
        } catch (Exception e) {
            throw ExceptionFactory.makeWebServiceException(e);
        }
    }


    public Object demarshalResponse(Message message, Object[] signatureArgs,
                                    OperationDescription operationDesc)
            throws WebServiceException {

        EndpointInterfaceDescription ed = operationDesc.getEndpointInterfaceDescription();
        EndpointDescription endpointDesc = ed.getEndpointDescription();

        // Note all exceptions are caught and rethrown with a WebServiceException
        try {
            // Sample RPC message
            // ..
            // <soapenv:body>
            //    <m:opResponse xmlns:m="urn://api">
            //       <param xsi:type="data:foo" >...</param>
            //    </m:op>
            // </soapenv:body>
            //
            // Important points.
            //   1) RPC has an operation element under the body.  This is the name of the
            //      wsdl operation.
            //   2) The data blocks are located underneath the operation element.  (In doc/lit
            //      the data elements are underneath the body.
            //   3) The name of the data blocks (param) are defined by the wsdl:part not the
            //      schema.  Note that it is unqualified per WSI-BP
            //   4) The type of the data block (data:foo) is defined by schema (thus there is 
            //      JAXB type rendering.  
            //   5) We always send an xsi:type, but other vendor's may not.
            // Get the operation information
            ParameterDescription[] pds = operationDesc.getParameterDescriptions();
            MarshalServiceRuntimeDescription marshalDesc =
                    MethodMarshallerUtils.getMarshalDesc(endpointDesc);
            TreeSet<String> packages = marshalDesc.getPackages();

            // Indicate that the style is RPC.  This is important so that the message understands
            // that the data blocks are underneath the operation element
            message.setStyle(Style.RPC);

            // Get the return value.
            Class returnType = operationDesc.getResultActualType();
            Object returnValue = null;
            boolean hasReturnInBody = false;
            if (returnType != void.class) {
                // If the webresult is in the header, we need the name of the header so that we can find it.
                Element returnElement = null;
                // Use "byJavaType" unmarshalling if necessary
                Class byJavaType = null;
                if (!operationDesc.isResultHeader() ||
                        MethodMarshallerUtils.isNotJAXBRootElement(returnType, marshalDesc)) {
                    byJavaType = returnType;
                }
                if (operationDesc.isResultHeader()) {
                    returnElement = MethodMarshallerUtils
                            .getReturnElement(packages, message, byJavaType,  operationDesc.isListType(), true,
                                              operationDesc.getResultTargetNamespace(),
                                              operationDesc.getResultPartName(),
                                              MethodMarshallerUtils.numOutputBodyParams(pds) > 0);

                } else {
                    returnElement = MethodMarshallerUtils
                            .getReturnElement(packages, message, byJavaType,  operationDesc.isListType(), false, null, null,
                                    MethodMarshallerUtils.numOutputBodyParams(pds) > 0);
                    hasReturnInBody = true;
                }
                returnValue = returnElement.getTypeValue();
                // TODO should we allow null if the return is a header?
                //Validate input parameters for operation and make sure no input parameters are null.
                //As per JAXWS Specification section 3.6.2.3 if a null value is passes as an argument 
                //to a method then an implementation MUST throw WebServiceException.
                if (returnValue == null) {
                    throw ExceptionFactory.makeWebServiceException(Messages.getMessage(
                            "NullParamErr1", "Return", operationDesc.getJavaMethodName(),
                            "rpc/lit"));
                }
            }

            // We want to use "by Java Type" unmarshalling for 
            // all body elements and all non-JAXB objects
            Class[] javaTypes = new Class[pds.length];
            for (int i = 0; i < pds.length; i++) {
                ParameterDescription pd = pds[i];
                Class type = pd.getParameterActualType();
                if (!pd.isHeader() ||
                        MethodMarshallerUtils.isNotJAXBRootElement(type, marshalDesc)) {
                    javaTypes[i] = type;
                }
            }

            // Unmarshall the ParamValues from the Message
            List<PDElement> pvList = MethodMarshallerUtils.getPDElements(pds,
                                                                         message,
                                                                         packages,
                                                                         false, // output
                                                                         hasReturnInBody,
                                                                         javaTypes); // unmarshal by type

            // TODO Should we check for null output body values?  Should we check for null output header values ?

            // Populate the response Holders
            MethodMarshallerUtils.updateResponseSignatureArgs(pds, pvList, signatureArgs);

            return returnValue;
        } catch (Exception e) {
            throw ExceptionFactory.makeWebServiceException(e);
        }
    }

    public Message marshalFaultResponse(Throwable throwable,
                                        OperationDescription operationDesc, Protocol protocol)
            throws WebServiceException {

        EndpointInterfaceDescription ed = operationDesc.getEndpointInterfaceDescription();
        EndpointDescription endpointDesc = ed.getEndpointDescription();
        MarshalServiceRuntimeDescription marshalDesc =
                MethodMarshallerUtils.getMarshalDesc(endpointDesc);
        TreeSet<String> packages = marshalDesc.getPackages();

        // We want to respond with the same protocol as the request,
        // It the protocol is null, then use the Protocol defined by the binding
        if (protocol == null) {
            protocol = Protocol.getProtocolForBinding(endpointDesc.getBindingType());
        }

        // Note all exceptions are caught and rethrown with a WebServiceException
        try {
            // Create the message 
            MessageFactory mf = (MessageFactory)FactoryRegistry.getFactory(MessageFactory.class);
            Message m = mf.create(protocol);

            // Put the fault onto the message
            MethodMarshallerUtils.marshalFaultResponse(throwable,
                                                       marshalDesc,
                                                       operationDesc,
                                                       m);
            return m;
        } catch (Exception e) {
            throw ExceptionFactory.makeWebServiceException(e);
        }
    }

    public Throwable demarshalFaultResponse(Message message, OperationDescription operationDesc)
            throws WebServiceException {

        EndpointInterfaceDescription ed = operationDesc.getEndpointInterfaceDescription();
        EndpointDescription endpointDesc = ed.getEndpointDescription();
        MarshalServiceRuntimeDescription marshalDesc =
                MethodMarshallerUtils.getMarshalDesc(endpointDesc);

        // Note all exceptions are caught and rethrown with a WebServiceException
        try {
            Throwable t = MethodMarshallerUtils
                    .demarshalFaultResponse(operationDesc, marshalDesc, message);
            return t;
        } catch (Exception e) {
            throw ExceptionFactory.makeWebServiceException(e);
        }
    }

    /**
     * @param opDesc
     * @return qualified qname to use in the rpc message to represent the operation (per WSI BP)
     */
    private static QName getRPCOperationQName(OperationDescription opDesc, boolean isRequest) {
        QName qName = opDesc.getName();

        String localPart = qName.getLocalPart();
        String uri = null;
        
        if (isRequest) {
            uri = opDesc.getBindingInputNamespace();
        } else {
            uri = opDesc.getBindingOutputNamespace();
        }
        
        String prefix = "rpcOp";  // Prefer using an actual prefix


        qName = new QName(uri, localPart, prefix);
        return qName;
    }

}