/// <summary>
/// Solves a given identification problem
/// </summary>
public void Solve()
{
factsBase.Facts.Clear();
if (initialFactsBase != null)
{
factsBase.Facts = new List <IFact>(initialFactsBase.Facts);
}
// Copie de la base de règles pour pouvoir faire des manipulations dedans (suppression de règles)
RulesBase usableRules = new RulesBase();
usableRules.Rules = new List <Rule>(rulesBase.Rules);
bool moreRules = true;
while (moreRules)
{
Rule ruleToApply = FindUsableRule(usableRules);
if (ruleToApply != null)
{
// Une règle à appliquer a été trouvée
IFact newFact = ruleToApply.Conclusion;
newFact.Level = currentLevel + 1;
factsBase.Facts.Add(newFact);
usableRules.Rules.Remove(ruleToApply);
currentLevel = -1;
}
else
{
// Il n'y a plus de règle à appliquer
moreRules = false;
}
}
ihm.PrintFacts(factsBase.Facts);
}
/// <summary>
/// Creates an instance of the Engine class
/// </summary>
/// <param name="a_ihm">Reference to the application object instance that must implement the IUserInterface</param>
public Engine(IUserInterface a_ihm)
{
rulesBase = new RulesBase();
initialFactsBase = null;
factsBase = new FactsBase();
ihm = a_ihm;
}
/// <summary>
/// Loops the rules base to find all applicable rules
/// </summary>
/// <param name="a_rulesBase">RulesBase object of the given identification problem</param>
/// <returns></returns>
protected Rule FindUsableRule(RulesBase a_rulesBase)
{
foreach (Rule rule in a_rulesBase.Rules)
{
currentLevel = CanApply(rule);
if (currentLevel != -1)
{
return(rule);
}
}
return(null);
}
/// <summary>
/// Creates an instance of the Engine class
/// </summary>
/// <param name="a_ihm">Reference to the application object instance that must implement the IUserInterface</param>
/// <param name="a_rulesBase">RulesBase instance for the given identification problem</param>
public Engine(IUserInterface a_ihm, RulesBase a_rulesBase)
{
if (a_rulesBase != null)
{
rulesBase = a_rulesBase;
}
else
{
rulesBase = new RulesBase();
}
initialFactsBase = null;
factsBase = new FactsBase();
ihm = a_ihm;
}
/// <summary>
/// Creates an instance of the Engine class
/// </summary>
/// <param name="a_ihm">Reference to the application object instance that must implement the IUserInterface</param>
/// <param name="a_rulesBase">RulesBase instance for the given identification problem</param>
/// <param name="a_factsBase">FactsBase instance including already known facts for the given identification problem</param>
public Engine(IUserInterface a_ihm, RulesBase a_rulesBase, FactsBase a_factsBase)
{
if (a_rulesBase != null)
{
rulesBase = a_rulesBase;
}
else
{
rulesBase = new RulesBase();
}
if (a_factsBase != null && a_factsBase.Facts.Count != 0)
{
initialFactsBase = a_factsBase;
factsBase = new FactsBase();
factsBase.Facts = new List <IFact>(initialFactsBase.Facts);
}
else
{
initialFactsBase = null;
factsBase = new FactsBase();
}
ihm = a_ihm;
}