base64BinaryUnion Function Description
Description
This function takes two or more arguments that are both a bag of base64Binary values. It returns a bag of base64Binary such that it contains all elements of all the argument bags. The function gets rid of duplicates, as determined by the equality functions.
base64BinaryUnion belongs to the ALFA function reference's
Set functions category. It maps to the XACML function identifier
urn:oasis:names:tc:xacml:1.0:function:base64Binary-union, takes 2 or more arguments and returns a value of type A bag of values of type base64Binary with no duplicates..
| Property | Value |
|---|---|
| Category | Set functions |
| # Arguments | 2 or more |
| Arguments |
|
| Return Value | A bag of values of type base64Binary with no duplicates. |
| Expressed As | pre-fix |
| Representation | ALFA short name |
| Allowed In Target | false |
| ALFA Shorthand | None |
| Commutative | true |
Example
/**
* Deny access if the payload is either in the blockedPayloads or UnsafePayloads
*/
rule base64BinaryUnionExample{
deny
condition base64BinaryIsIn(base64BinaryOneAndOnly(encodedMessage),base64BinaryUnion(blockedPayloads,unsafePayloads))
}In this example, we use the base64BinaryUnion function in conjunction with base64BinaryIsIn to determine whether a single atomic value is in the union of 2 bags of values. This also shows how functions can be combined together in ALFA. The access will be denied if the encodedMessage is in either blockedPayloads or unsafePayloads.
Related Functions
Other functions in the Set functions category: