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Specifying Functions and Variables

To configure service connectors, you may need to specify variables and functions to define bindings, output fields, and other properties.

You can reference these variables in a service connector using an XQuery expression:

Variable	Variable Type	Description
$VariableName	All connection properties	Properties, input and Other Parameters can be specified using this format.
$ResponseStatusCode	Output field mapping	HTTP response code.
$ResponseHeaders	Output field mapping	Contains the HTTP response header in an element list where each item is: <header name="Content-Type">text/plain</header> For example: $ResponseHeaders[@name = "Content-Type"]/text()
$RESTResponse	Output field mapping	Contains the RESTResponse XML data, including the headers and code. Visible in the Test Results for the Service Connector.

When you define bindings in the service connector, you can use many functions in the

Expression Editor

For information on all the available functions, see Using Functions and Using the Expression Editor.

The following table describes functions available for service connector output field mappings:

Function	Syntax	Description
responseHeaderExists	svc:responseHeaderExists($ResponseHeaders, headerName ) : boolean	Returns a Boolean value that indicates if a header parameter exists within the response.
getResponseHeader	svc:getResponseHeader( $ResponseHeaders, headerName, defaultValue ) : string svc:getResponseHeader( $ResponseHeaders, headerName ): string	Returns a response header value. If the header parameter is not defined, this function returns the optional default value.
getResponseHeaderNames	svc:getResponseHeaderNames( $ResponseHeaders ) : list of strings	Returns a list that contains the names of all the parameters within a response header.