/// <summary>
/// SearchForAnswer
/// </summary>
/// <param name="element"></param>
/// <param name="question"></param>
/// <param name="value"></param>
/// <returns></returns>
private bool SearchForAnswer(Element element, Question question, bool value)
{
foreach (RuleArgument ruleArgument in question.Rule.Arguments)
{
Fact fact = Facts.Find(f => ruleArgument.Id == f.Id);
logger.CheckingForArgument(fact);
FactAboutElement factAboutElement = FindFactAboutElementWhichIsRuleArgument(element, ruleArgument);
if (factAboutElement == null)
{
Question answeringQuestion = FindQuestionForGivenFact(ruleArgument.Id);
if (answeringQuestion == null)
{
return false;
}
logger.SearchingForAnswer(element, answeringQuestion);
if (SearchForAnswer(element, answeringQuestion, ruleArgument.RequiredValue))
{
factAboutElement = FindFactAboutElementWhichIsRuleArgument(element, ruleArgument);
}
}
if (factAboutElement.Value != ruleArgument.RequiredValue)
{
logger.ArgumentDoesNotMatch(ruleArgument);
return false;
}
logger.ArgumentMatch(ruleArgument);
}
FactAboutElement factAboutElementNew = new FactAboutElement
{
Id = question.Rule.Target.Id,
Name = question.Rule.Target.Name,
Value = value
};
logger.AddingFact(factAboutElementNew);
element.Facts.Add(factAboutElementNew);
logger.EnfOfCheckingIfFactCanBeAdded();
return true;
}
/// <summary>
/// Check if element is good for a given answer to a question
/// </summary>
/// <param name="element"></param>
/// <param name="question"></param>
/// <param name="value"></param>
/// <returns></returns>
private bool Answer(Element element, Question question, bool value)
{
logger.LookingForFact(question);
var factAboutElement = FindFactAboutElementWhichIsQuestionSubject(element, question);
if (factAboutElement != default(FactAboutElement))
{
logger.ElementHasAnswer(element, question);
return value == factAboutElement.Value;
}
logger.ElementDoesnotHaveAnswer(element, question);
logger.CheckingIfElementCanBeCreated();
return SearchForAnswer(element, question, value);
}
/// <summary>
/// finds fact about element
/// </summary>
/// <param name="element"></param>
/// <param name="question"></param>
/// <returns></returns>
private FactAboutElement FindFactAboutElementWhichIsQuestionSubject(Element element, Question question)
{
return element.Facts.Find(f => f.Id == question.Rule.Target.Id);
}
public void SearchingForAnswer(Element element, Question question)
{
IncreaseIndent();
stringBuilder.AppendLine(Indent() + string.Format("Szukanie, czy element {0} posiada odpowiedź na pytanie {1}", element.Name, question.Rule.Name));
}
public void ElementHasAnswer(Element element, Question question)
{
stringBuilder.AppendLine(Indent() + string.Format("Element posiada fakt: {0}", question.Rule.Target.Name));
DecreaseIndent();
}
public void LookingForFact(Question question)
{
stringBuilder.AppendLine(Indent() + string.Format("Szukanie faktu: {0}", question.Rule.Target.Name));
IncreaseIndent();
}
public void LookingForFact(Question question)
{
}
public void ElementHasAnswer(Element element, Question question)
{
}
public void ElementDoesnotHaveAnswer(Element element, Question question)
{
}
public void SearchingForAnswer(Element element, Question question)
{
}