private TriState EvaluateSpecifications(RuleAgenda <T, V> agenda, bool execute)
{
var match = TriState.False;
foreach (T specification in agenda.Specifications)
{
RuleBase <T, V>[] rules;
var registered = _rules.TryGetValue(specification.RuleIndex, out rules);
var facts = (V)agenda.Facts;
if (!registered)
{
continue;
}
var evaluation = EvaluateRules(specification, facts, rules, execute, agenda.RuleChaining);
switch (agenda.SpecificationChaining)
{
case ChainType.All:
if (evaluation != TriState.False)
{
specification.Successful = evaluation;
match = evaluation;
}
else
{
return(TriState.False);
}
break;
case ChainType.Any:
if (evaluation != TriState.False)
{
specification.Successful = evaluation;
match = evaluation;
}
break;
case ChainType.First:
if (evaluation != TriState.False)
{
specification.Successful = evaluation;
return(evaluation);
}
break;
}
}
return(match);
}
public bool Resolve(RuleAgenda <T, V> agenda)
{
var resolved = false;
foreach (T specification in agenda.Specifications)
{
if (specification.Successful == TriState.True)
{
var modified = ResolveFor(specification, (V)agenda.Facts);
if (modified)
{
resolved = true;
}
}
}
return(resolved);
}
public bool Evaluate(RuleAgenda <T, V> agenda)
{
return(EvaluateSpecifications(agenda, false).ToBool());
}