static void DelegateExample()
{
// Create EngineAttributes with Name
var engineOptions = new EngineAttributes {
Name = "MyEngine"
};
// Instantiate the RulesEngine with option
var myEngine = new RulesEngine(engineOptions);
// Now add Lambda rule
myEngine.AddRule(new Rule((c, o) => { Console.WriteLine("Hello, world"); return(true); }));
// Next, add a delegate method
myEngine.AddRule(new Rule(ruleDelegate));
myEngine.RunAllRules();
// Output:
// Hello, world
// ruleDelegate called
}
static void RuleClassExample()
{
/**
* Create the component to initialize the RulesEngine
* We don't HAVE to have a component, the rules can still run
*/
var bigB = new Customer
{
ID = 1,
Name = "Amitabh",
Birthdate = new DateTime(1942, 10, 11),
FirstPurchase = new DateTime(2005, 1, 2),
};
/**
* Create an output object for Rules Engine
* We don't HAVE to have an output object
*/
var discount = new CustomerDiscount();
// Create Engine Attributes
var engineAttributes = new EngineAttributes {
Component = bigB, Output = discount
};
// We can add individual rules or an array of rules
var rulesArray = new Rule[] { new Rule(seniorCitizenDiscount, ruleName: "Senior") };
// Start the engine with attributes and initial rules list
var engine = new RulesEngine(engineAttributes, rulesArray);
// We are adding multiple rules based on the same class, so we must name them explicitly
engine.AddRule(new Rule(new LoyaltyDiscount(1, 5), ruleName: "L1"));
engine.AddRule(new Rule(new LoyaltyDiscount(5, 8), ruleName: "L2"));
engine.AddRule(new Rule(new LoyaltyDiscount(10, 10), ruleName: "L3"));
Console.WriteLine(engine.RunAllRules());
}
