WS-Inspection

• UDDI has a lot of features. It might be overkill for a small (in-house) application.
• IBM and Microsoft got together and came up with the Web Services Inspection Language.
• It can be used to create a simple index of service descriptions.
• An example of two services. The first provides stock quotes with a HTTP-accessible WSDL file and UDDI-accessible. The second provides a calculator with an FTP-accessible WSDL file.

<?xml version="1.0"?>
<inspection xmlns="http://schemas.xmlsoap.org/ws/2001/10/inspection/"
            xmlns:wsiluddi="http://schemas.xmlsoap.org/ws/2001/10/inspection/uddi/">
  <service>
    <abstract>A stock quote service with two descriptions</abstract>
    <description referencedNamespace="http://schemas.xmlsoap.org/wsdl/"
                 location="http://example.com/stockquote.wsdl"/>
    <description referencedNamespace="urn:uddi-org:api">
      <wsiluddi:serviceDescription location="http://www.example.com/uddi/inquiryapi">
        <wsiluddi:serviceKey>4FA28580-5C39-11D5-9FCF-BB3200333F79</wsiluddi:serviceKey>
      </wsiluddi:serviceDescription>
    </description>
  </service>
  <service>
    <description referencedNamespace="http://schemas.xmlsoap.org/wsdl/"
                 location="ftp://anotherexample.com/tools/calculator.wsdl"/>
  </service>
  <link referencedNamespace="http://schemas.xmlsoap.org/ws/2001/10/inspection/"
        location="http://example.com/moreservices.wsil"/>
</inspection>

• These documents should be placed in a website which must also have a http://host/inspection.wsil file that lists the services.
• UDDI is useful when you don't know who provides the service you want. WS-Inspection can only be used if you know who you want to use.