Class BuiltInFunctions

Namespace

RuleWright.Extensions.Functions

Assembly

RuleWright.Extensions.Functions.dll

A small, curated catalog of ready-made IRuleFunction predicates for the custom operator — the things the closed built-in operator vocabulary deliberately does not cover: case-insensitive comparison, emptiness/format checks, number parity and divisibility, and date relativity. Every predicate is total: given a value of an unexpected shape it returns false rather than throwing.

Reference one by Name in a rule leaf, e.g. { "operator": "custom", "name": "IsEven", "field": "Order.ItemCount" }, after registering the set with RegisterBuiltInFunctions(RuleWrightBuilder, Func<DateTime>?).

IsNullOrEmpty	field is null or an empty string
IsNullOrWhiteSpace	field is null, empty, or whitespace
EqualsIgnoreCase	field equals the value ignoring case (ordinal)
IsEmail	field looks like an email address
IsEven / IsOdd	field is an even / odd integer
IsPositive / IsNegative	field is a number > 0 / < 0
DivisibleBy	field is an integer divisible by the value
IsBetweenInclusive	field is within the [min, max] value array
IsWeekend / IsWeekday	field date falls on a weekend / weekday
IsInPast / IsInFuture	field date is before / after now

public static class BuiltInFunctions

Inheritance

object

BuiltInFunctions

Inherited Members

object.GetType()

object.MemberwiseClone()

object.ToString()

object.Equals(object)

object.Equals(object, object)

object.ReferenceEquals(object, object)

object.GetHashCode()

Properties

All

The built-in functions, using the system clock (UtcNow) for the date-relativity predicates.

Methods

Create(Func<DateTime>?)

Creates the built-in functions with a custom clock for the date-relativity predicates (IsInPast, IsInFuture) — useful for deterministic tests.