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The Data Services Server defines special system variables that can be used as default values. At the moment, it only provides a variable for retreiving the username of the current user authenticated in a secured data service. This variable can be accessed using the following syntax:
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#{USERNAME}: This valueDynamically replaces the current input mapping value dynamically with the current user's username, when a data service request is processed in the server.
#{NULL}: This value setsSets the current input mapping value to null.
It's the same as providing "xsi:nil" in the incoming message's input parameter element.
#{TENANT_ID}: This value representsRepresents the current tenant ID, which.
This is meaningfuluseful when havingin a Stratos deployment where multiple tenants live in the same server.
#{USER_ROLES}: This value contains the list of user roles that the current calling user has.
If the parameter mapped is of type ARRAY, it will have the full list of user roles.
If it's a SCALAR, it will only contain the first user role of the user.
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