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Chapter 26. A Starting Point WSDL Contract

26.1. Sample WSDL Contract
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Example 26.1, “HelloWorld WSDL Contract” shows the HelloWorld WSDL contract. This contract defines a single interface, Greeter, in the wsdl:portType element. The contract also defines the endpoint which will implement the service in the wsdl:port element.

Example 26.1. HelloWorld WSDL Contract

<?xml version="1.0" encoding=";UTF-8"?>
<wsdl:definitions name="HelloWorld"
                  targetNamespace="http://apache.org/hello_world_soap_http"
                  xmlns="http://schemas.xmlsoap.org/wsdl/"
                  xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/"
                  xmlns:tns="http://apache.org/hello_world_soap_http"
                  xmlns:x1="http://apache.org/hello_world_soap_http/types"
                  xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/"
                  xmlns:xsd="http://www.w3.org/2001/XMLSchema">
  <wsdl:types>
    <schema targetNamespace="http://apache.org/hello_world_soap_http/types"
            xmlns="http://www.w3.org/2001/XMLSchema"
            elementFormDefault="qualified">
      <element name="sayHiResponse">
        <complexType>
          <sequence>
            <element name="responseType" type="string"/>
          </sequence>
        </complexType>
      </element>
      <element name="greetMe">
        <complexType>
          <sequence>
            <element name="requestType" type="string"/>
          </sequence>
        </complexType>
      </element>
      <element name="greetMeResponse">
        <complexType>
          <sequence>
            <element name="responseType" type="string"/>
          </sequence>
        </complexType>
      </element>
      <element name="greetMeOneWay">
        <complexType>
          <sequence>
            <element name="requestType" type="string"/>
          </sequence>
        </complexType>
      </element>
      <element name="pingMe">
        <complexType/>
      </element>
      <element name="pingMeResponse">
        <complexType/>
      </element>
      <element name="faultDetail">
        <complexType>
          <sequence>
            <element name="minor" type="short"/>
            <element name="major" type="short"/>
          </sequence>
        </complexType>
      </element>
    </schema>
  </wsdl:types>

  <wsdl:message name="sayHiRequest">
    <wsdl:part element="x1:sayHi" name="in"/>
  </wsdl:message>
  <wsdl:message name="sayHiResponse">
    <wsdl:part element="x1:sayHiResponse" name="out"/>
  </wsdl:message>
  <wsdl:message name="greetMeRequest">
    <wsdl:part element="x1:greetMe" name="in"/>
  </wsdl:message>
  <wsdl:message name="greetMeResponse">
    <wsdl:part element="x1:greetMeResponse" name="out"/>
  </wsdl:message>
  <wsdl:message name="greetMeOneWayRequest">
    <wsdl:part element="x1:greetMeOneWay" name="in"/>
  </wsdl:message>
  <wsdl:message name="pingMeRequest">
    <wsdl:part name="in" element="x1:pingMe"/>
  </wsdl:message>
  <wsdl:message name="pingMeResponse">
    <wsdl:part name="out" element="x1:pingMeResponse"/>
  </wsdl:message>
  <wsdl:message name="pingMeFault">
    <wsdl:part name="faultDetail" element="x1:faultDetail"/>
  </wsdl:message>

  <wsdl:portType name="Greeter">
    <wsdl:operation name="sayHi">
      <wsdl:input message="tns:sayHiRequest" name="sayHiRequest"/>
      <wsdl:output message="tns:sayHiResponse" name="sayHiResponse"/>
    </wsdl:operation>

    <wsdl:operation name="greetMe">
      <wsdl:input message="tns:greetMeRequest" name="greetMeRequest"/>
      <wsdl:output message="tns:greetMeResponse" name="greetMeResponse"/>
    </wsdl:operation>

    <wsdl:operation name="greetMeOneWay">
      <wsdl:input message="tns:greetMeOneWayRequest" name="greetMeOneWayRequest"/>
    </wsdl:operation>

    <wsdl:operation name="pingMe">
      <wsdl:input name="pingMeRequest" message="tns:pingMeRequest"/>
      <wsdl:output name="pingMeResponse" message="tns:pingMeResponse"/>
      <wsdl:fault name="pingMeFault" message="tns:pingMeFault"/>
    </wsdl:operation>
  </wsdl:portType>

  <wsdl:binding name="Greeter_SOAPBinding" type="tns:Greeter">
    ...
  </wsdl:binding>

  <wsdl:service name="SOAPService">
    <wsdl:port binding="tns:Greeter_SOAPBinding" name="SoapPort">
      <soap:address location="http://localhost:9000/SoapContext/SoapPort"/>
    </wsdl:port>
  </wsdl:service>
</wsdl:definitions>
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The Greeter interface defined in Example 26.1, “HelloWorld WSDL Contract” defines the following operations:

sayHi — Has a single output parameter, of xsd:string.

greetMe — Has an input parameter, of xsd:string, and an output parameter, of xsd:string.

greetMeOneWay — Has a single input parameter, of xsd:string. Because this operation has no output parameters, it is optimized to be a oneway invocation (that is, the consumer does not wait for a response from the server).

pingMe — Has no input parameters and no output parameters, but it can raise a fault exception.

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