Perform the following procedures to create composites that use MIME attachments.

1. Create a composite using a payload schema (for example, an inbound web service wired to an Oracle Mediator wired to an outbound web service).

2. Within the WSDL file of Oracle Mediator, perform the following steps:

   1. From the WSDL designer, open the Oracle Mediator WSDL file.

   2. Drag and drop bindings into the middle swimlane.

   3. Select the RPC binding.

   4. Enter a name.

   5. Go to Source view of the WSDL and modify the WSDL input and WSDL output with MIME multiparts.

      <wsdl:input>
            <mime:multipartRelated>
                <mime:part>
                    <soap:body parts="payload" use="literal"/>
                </mime:part>
                <mime:part>
                    <mime:content part="bin" type="application/octet-stream"/>
                </mime:part>
            </mime:multipartRelated>
      </wsdl:input>
      

   6. Add the MIME part in the request/response message.

      <wsdl:message name="BPELProcess1RequestMessage">
          <wsdl:part name="payload" element="ns1:purchaseOrder" />
          <!--add below part-->
          <wsdl:part name="bin" type="xsd:base64Binary"/>
      </wsdl:message>
      

   7. Add a namespace in the WSDL definitions.

      xmlns:xsd="http://www.w3.org/2001/XMLSchema"
      xmlns:mime="http://schemas.xmlsoap.org/wsdl/mime/">
      

When complete, the WSDL that references a MIME attachment is displayed.

<wsdl:definitions
  name="PhotoCatalogService"
  targetNamespace="http://examples.com/PhotoCatalog"
  xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/"
  xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/"
  xmlns:xsd="http://www.w3.org/2001/XMLSchema"
  xmlns:types="http://examples.com/PhotoCatalog/types"
  xmlns:mime="http://schemas.xmlsoap.org/wsdl/mime/"
  xmlns:tns="http://examples.com/PhotoCatalog">
  <wsdl:message name="addPhotoRequest">
    <wsdl:part name="photo" type="xsd:hexBinary"/>
  </wsdl:message>
  <wsdl:message name="addPhotoResponse">
    <wsdl:part name="status" type="xsd:string"/>
  </wsdl:message>
  <wsdl:message name="replacePhotoRequest">
    <wsdl:part name="oldPhoto" type="xsd:string"/>
    <wsdl:part name="newPhoto" type="xsd:hexBinary"/>
  </wsdl:message>
  <wsdl:message name="replacePhotoResponse">
    <wsdl:part name="status" type="xsd:string"/>
  </wsdl:message>
  <wsdl:portType name="PhotoCatalog">
    <wsdl:operation name="addPhoto">
      <wsdl:input message="tns:addPhotoRequest"/>
      <wsdl:output message="tns:addPhotoResponse"/>
    </wsdl:operation>
    <wsdl:operation name="replacePhoto">
      <wsdl:input message="tns:replacePhotoRequest"/>
      <wsdl:output message="tns:replacePhotoResponse"/>
    </wsdl:operation>
  </wsdl:portType>
  <wsdl:binding name="PhotoCatalogBinding" type="tns:PhotoCatalog">
    <soap:binding style="document"
transport="http://schemas.xmlsoap.org/soap/http"/>
    <wsdl:operation name="addPhoto">
      <wsdl:input>
        <mime:multipartRelated>
          <mime:part>
            <soap:body use="literal"/>
          </mime:part>
          <mime:part>
            <mime:content part="photo"
                          type="image/jpeg"/>
          </mime:part>
        </mime:multipartRelated>
      </wsdl:input>
      <wsdl:output>
        <mime:multipartRelated>
          <mime:part>
            <soap:body use="literal"/>
          </mime:part>
          <mime:part>
            <mime:content part="status" type="text/plain"/>
            <mime:content part="status" type="text/xml"/>
          </mime:part>
        </mime:multipartRelated>
      </wsdl:output>
    </wsdl:operation>
    <wsdl:operation name="replacePhoto">
      <wsdl:input>
        <mime:multipartRelated>
          <mime:part>
            <soap:body parts="oldPhoto" use="literal"/>
          </mime:part>
          <mime:part>
            <mime:content part="newPhoto"
                          type="image/jpeg"/>
          </mime:part>
        </mime:multipartRelated>
      </wsdl:input>
      <wsdl:output>
            <soap:body parts="status" use="literal"/>
      </wsdl:output>
    </wsdl:operation>
  </wsdl:binding>
</wsdl:definitions>