doubleIsIn Function Description

Description

Returns true if the value of the first parameter is in the bag of values of the second parameter. Attributes of type double are compared using the doubleEqual function.

doubleIsIn belongs to the ALFA function reference's Bag functions category. It maps to the XACML function identifier urn:oasis:names:tc:xacml:1.0:function:double-is-in, takes 2 arguments and returns a value of type boolean.

Property Value
Category Bag functions
# Arguments 2
Arguments
  • atomic (single) value of type double
  • bag (collection) of values of type double
Return Value boolean
Expressed As pre-fix
Representation ALFA short name
Allowed In Target true
ALFA Shorthand None
Commutative false

Example

/**
 * Permit if the double 17.5 is in the list of allowed numbers (double). Note here the
 * use of the function inside a target rather than a condition.
 */
rule doubleIsInExample{
    target clause doubleIsIn(17.5, double.luckyNumbers)
    permit
}

Permit if the value passed as the first parameter is in the bag of values passed as the second parameter

See Also

Related Functions

Other functions in the Bag functions category:

Browse the full ALFA function reference.