public void Evaluate()
{
if (!IsValid())
{
throw new Exception($"Evaluation of predicate has failed. Missing value {LeftTerm.Id}.");
}
if (Evaluated)
{
return;
}
try
{
var operatorType = Type.GetType($"Reasoning.Core.Models.Operators.{Enum.GetName(typeof(OperatorType), Operator)}, Reasoning.Core");
var operatorInstance = (IOperator)Activator.CreateInstance(operatorType);
Result = operatorInstance.Compare(LeftTerm.GetValue(), RightTerm.GetValue());
Evaluated = true;
}
catch (Exception ex)
{
throw new Exception($"Unknown operator instance of predicate", ex);
}
}
public bool IsValid()
{
return(!LeftTerm.IsEmpty() && !RightTerm.IsEmpty());
}
} // constructor
protected override bool BoolOperator()
{
return(LeftTerm.Calculate() || RightTerm.Calculate());
} // BoolOperator
