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Caché Web Service Proxy Class Requirements

A class used by Caché as a proxy to an external Web Service must satisfy the following requirements:

  • The class must extend %SOAP.WebClientOpens in a new tab

  • The methods projected into the class by the Web Service producer must be instance methods and must be tagged with the WebMethod attribute.

Classes that extend %SOAP.WebClientOpens in a new tab automatically contain values for the following parameters. These parameters specify important characteristics of the Web Service:

Parameter Description and Values
LOCATION The value of this parameter is the URL that a client uses to access the Web Service. The URL is included in the WSDL document for the Web Service.
NAMESPACE The value of this parameter is a URI. It provides a namespace for the service, so that its name does not conflict with that of another service. By default, Caché assigns the value Developers traditionally use this value during Web Service development. It should be changed prior to deployment.
SERVICENAME The value of this parameter provides the client's name for the service. It should be a valid identifier. That is, it should start with a letter and contain only alphanumeric characters.

In most situations, you will use Caché to automatically generate the proxy classes using the Web Service producer's WSDL document. The proxy classes will fulfill all of these requirements.

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