10.6. RPC/Literal

With RPC there is a wrapper element that names the endpoint operation. Child elements of the RPC parent are the individual parameters. The SOAP body is constructed based on some simple rules:

The port type operation name defines the endpoint method name
Message parts are endpoint method parameters

RPC is defined by the style attribute on the SOAP binding.

<binding name='EndpointInterfaceBinding' type='tns:EndpointInterface'>
   <soap:binding style='rpc' transport='http://schemas.xmlsoap.org/soap/http'/>
   <operation name='echo'>
      <soap:operation soapAction=''/>
      <input>
         <soap:body namespace='http://org.jboss.ws/samples/jsr181pojo' use='literal'/>
      </input>
      <output>
         <soap:body namespace='http://org.jboss.ws/samples/jsr181pojo' use='literal'/>
      </output>
   </operation>
</binding>

<binding name='EndpointInterfaceBinding' type='tns:EndpointInterface'>
   <soap:binding style='rpc' transport='http://schemas.xmlsoap.org/soap/http'/>
   <operation name='echo'>
      <soap:operation soapAction=''/>
      <input>
         <soap:body namespace='http://org.jboss.ws/samples/jsr181pojo' use='literal'/>
      </input>
      <output>
         <soap:body namespace='http://org.jboss.ws/samples/jsr181pojo' use='literal'/>
      </output>
   </operation>
</binding>

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With RPC style web services the portType names the operation (i.e. the java method on the endpoint)

<portType name='EndpointInterface'>
   <operation name='echo' parameterOrder='String_1'>
      <input message='tns:EndpointInterface_echo'/>
      <output message='tns:EndpointInterface_echoResponse'/>
   </operation>
</portType>

<portType name='EndpointInterface'>
   <operation name='echo' parameterOrder='String_1'>
      <input message='tns:EndpointInterface_echo'/>
      <output message='tns:EndpointInterface_echoResponse'/>
   </operation>
</portType>

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Operation parameters are defined by individual message parts.

<message name='EndpointInterface_echo'>
   <part name='String_1' type='xsd:string'/>
</message>
<message name='EndpointInterface_echoResponse'>
   <part name='result' type='xsd:string'/>
</message>

<message name='EndpointInterface_echo'>
   <part name='String_1' type='xsd:string'/>
</message>
<message name='EndpointInterface_echoResponse'>
   <part name='result' type='xsd:string'/>
</message>

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Note

There is no complex type in XML schema that could validate the entire SOAP message payload.

@WebService
@SOAPBinding(style = SOAPBinding.Style.RPC)
public class JSEBean01
{
   @WebMethod
   @WebResult(name="result")
   public String echo(@WebParam(name="String_1") String input)
   {
   ...
   }
}

@WebService
@SOAPBinding(style = SOAPBinding.Style.RPC)
public class JSEBean01
{
   @WebMethod
   @WebResult(name="result")
   public String echo(@WebParam(name="String_1") String input)
   {
   ...
   }
}

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The element names of RPC parameters/return values may be defined using the JAX-WS Annotations#javax.jws.WebParam and JAX-WS Annotations#javax.jws.WebResult respectively.

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10.6. RPC/Literal

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