public void Invoke(IExecutionContext context, IContext actionContext, Tuple tuple, FactIndexMap tupleFactMap)
{
var args = new object[_compiledAction.ParameterCount];
args[0] = actionContext;
int index = tuple.Count - 1;
foreach (var fact in tuple.Facts)
{
var mappedIndex = _actionFactMap.Map(tupleFactMap.Map(index));
FactIndexMap.SetElementAt(ref args, mappedIndex, 1, fact.Object);
index--;
}
try
{
_compiledAction.Delegate.Invoke(args);
}
catch (Exception e)
{
bool isHandled;
context.EventAggregator.RaiseActionFailed(context.Session, e, _expression, tuple, out isHandled);
if (!isHandled)
{
throw new RuleActionEvaluationException("Failed to evaluate rule action", _expression.ToString(), e);
}
}
}
public void Deactivate(IExecutionContext context, Tuple tuple, FactIndexMap tupleFactMap)
{
var activation = new Activation(Rule, tuple, tupleFactMap);
context.Agenda.Deactivate(activation);
context.EventAggregator.RaiseActivationDeleted(context.Session, activation);
}
private ICompiledRule CompileRule(ReteBuilder reteBuilder, IRuleDefinition ruleDefinition)
{
var transformation = new RuleTransformation();
var transformedRule = transformation.Transform(ruleDefinition);
var ruleDeclarations = transformedRule.LeftHandSide.Declarations.ToList();
IEnumerable <ITerminalNode> terminals = reteBuilder.AddRule(transformedRule);
var rightHandSide = transformedRule.RightHandSide;
var actions = new List <IRuleAction>();
foreach (var action in rightHandSide.Actions)
{
var factIndexMap = FactIndexMap.CreateMap(action.References, ruleDeclarations);
var ruleAction = new RuleAction(action.Expression, factIndexMap);
actions.Add(ruleAction);
}
var rule = new CompiledRule(ruleDefinition, actions);
BuildRuleNode(rule, terminals);
return(rule);
}
public RuleAction(LambdaExpression expression, FactIndexMap actionFactMap)
{
_expression = expression;
_actionFactMap = actionFactMap;
_compiledAction = FastDelegate.Create <Action <object[]> >(expression);
}
public TerminalNode(ITupleSource source, FactIndexMap factIndexMap)
{
_factIndexMap = factIndexMap;
source.Attach(this);
}
