Something like: "'@CurrentUser'.Roles[Name='Administrators'].Count>0"
Proposed Solution:
This feature would be very similar to what is already provided by FunctionOperators and XAF's readonly parameters.
For example, I would have the capability to define a custom function that would access the currently logged user and his/her properties (e.g. Name, Roles, etc.) and that will be evaluated in the criteria:
bool IsUserInRole(string username, string roleName)
bool IsUserInRole(object userId, object roleId), etc.
Ticket
S35234
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Please check out the following blog posts for more information:
Data Layer – 11.1 Sneak Peek – Custom Functions Part 1
Data Layer – 11.1 Sneak Peek – Custom Functions Part 2