/// <summary>
/// Returns a new table that is the union of the input tables.
/// </summary>
/// <param name="parameters">The model's parameters</param>
/// <param name="first">First table</param>
/// <param name="second">Second table</param>
/// <param name="newState">Function to calculate state of merged value combinations</param>
/// <returns>The new table</returns>
public static ParameterInteraction Merge <T>(IList <ParameterBase> parameters, ParameterInteraction first, ParameterInteraction second, Func <ValueCombinationState, ValueCombinationState, ValueCombinationState> newState)
where T : new()
{
List <int> parameterIndices = first.Parameters.Union(second.Parameters).ToList();
parameterIndices.Sort();
var mergedInteraction = new ParameterInteraction(parameterIndices);
var valueTable = ParameterInteractionTable <T> .GenerateValueTable(parameters, mergedInteraction);
foreach (var value in valueTable)
{
mergedInteraction.Combinations.Add(new ValueCombination(value, mergedInteraction));
}
foreach (var combination in mergedInteraction.Combinations)
{
var firstMatch = first.Combinations.First((c) => ParameterInteractionTable <T> .MatchCombination(c, combination));
var secondMatch = second.Combinations.First((c) => ParameterInteractionTable <T> .MatchCombination(c, combination));
combination.State = newState(firstMatch.State, secondMatch.State);
}
return(mergedInteraction);
}
// helper to implement Constraint.SatisfiesConstraint
internal static ConstraintSatisfaction SatisfiesContraint <T>(Model <T> model, ValueCombination combination, ParameterInteraction interaction) where T : new()
{
Debug.Assert(model != null && combination != null && interaction != null);
var parameterMap = combination.ParameterToValueMap;
for (int i = 0; i < interaction.Parameters.Count; i++)
{
if (!parameterMap.ContainsKey(interaction.Parameters[i]))
{
return(ConstraintSatisfaction.InsufficientData);
}
}
for (int i = 0; i < interaction.Combinations.Count; i++)
{
if (ParameterInteractionTable <T> .MatchCombination(interaction.Combinations[i], combination))
{
if (interaction.Combinations[i].State == ValueCombinationState.Excluded)
{
return(ConstraintSatisfaction.Unsatisfied);
}
}
}
return(ConstraintSatisfaction.Satisfied);
}
// helper to implement Constraint.SatisfiesConstraint
internal static ConstraintSatisfaction SatisfiesContraint(Model model, ValueCombination combination, ParameterInteraction interaction)
{
Debug.Assert(model != null && combination != null && interaction != null);
if (!interaction.Parameters.All((i) => combination.ParameterToVaueMap.ContainsKey(i)))
{
return(ConstraintSatisfaction.InsufficientData);
}
var matches = interaction.Combinations.Where((c) => ParameterInteractionTable.MatchCombination(c, combination));
if (matches.Any((c) => c.State == ValueCombinationState.Excluded))
{
return(ConstraintSatisfaction.Unsatisfied);
}
return(ConstraintSatisfaction.Satisfied);
}