/// <summary>
/// Initializes a new instance of the <see cref="RuleEvaluatedEventArgs"/> class.
/// </summary>
/// <param name="ruleEvaluation">The rule evaluation.</param>
public RuleEvaluatedEventArgs(RuleEvaluation ruleEvaluation)
{
if (ruleEvaluation == null)
{
throw new ArgumentNullException(nameof(ruleEvaluation));
}
RuleEvaluation = ruleEvaluation;
}
public override string GetMessage(RuleEvaluation evaluation)
{
var successfulEvaluation = evaluation as SuccessfulEvaluation ?? new SuccessfulEvaluation();
var template = buildMessage(successfulEvaluation);
return(evaluation == null
? template
: MessageGenerator.Detokenize(template, successfulEvaluation.Parameters));
}
public override string GetMessage(RuleEvaluation evaluation)
{
var successfulEvaluation = evaluation as SuccessfulEvaluation ?? new SuccessfulEvaluation();
var template = buildMessage(successfulEvaluation,
successfulEvaluation.Target
.IfTypeIs <TTarget>()
.ElseDefault());
return(MessageGenerator.Detokenize(template, successfulEvaluation.Parameters));
}
public override string GetMessage(RuleEvaluation evaluation)
{
var failedEvaluation = evaluation as FailedEvaluation ?? new FailedEvaluation();
var template = buildMessage(failedEvaluation);
return(evaluation == null
? template
: MessageGenerator.Detokenize(template, failedEvaluation.Parameters));
}
internal virtual void AddEvaluation(RuleEvaluation evaluation)
{
if (disposed)
{
return;
}
evaluations.Add(evaluation);
NotifyRuleEvaluated(evaluation);
}
/// <summary>
/// Builds a message describing the <see cref="RuleEvaluation" /> .
/// </summary>
/// <param name="evaluation"> The rule evaluation for which to build a message. </param>
/// <returns> A message describing the evaluation. </returns>
private static string BuildMessage(RuleEvaluation evaluation)
{
MessageContext.SetCurrentRuleEvaluation(evaluation);
var parts = new List <string>();
if (evaluation.Target != null)
{
parts.Add($"Target: {evaluation.Target}");
}
if (evaluation.Parameters != null)
{
parts.AddRange(evaluation.Parameters.Select(parameter => $"{parameter.Key}: {parameter.Value}"));
}
// add details about any extensions
// reflecting out the field bypasses the requirement to know the rule's generic type
var extensionsField = evaluation.Rule?
.GetType()
.GetField("extensions",
BindingFlags.NonPublic |
BindingFlags.Instance);
if (extensionsField != null)
{
var extensions = extensionsField.GetValue(evaluation.Rule) as Dictionary <Type, object>;
if (extensions != null)
{
foreach (var extension in extensions)
{
// extension.Key is the Type
// the extension class should have a meaningful ToString override
if ((extension.Value is SuccessMessageTemplate) && evaluation is FailedEvaluation)
{
continue;
}
if ((extension.Value is FailureMessageTemplate) && evaluation is SuccessfulEvaluation)
{
continue;
}
parts.Add("Extension: " + extension.Key + ": " + extension.Value);
}
}
parts.Add("Rule: " + evaluation.Rule);
}
return(string.Join(" / ", parts.ToArray()));
}
/// <summary>
/// Gets the message for the specified <see cref="RuleEvaluation" /> .
/// </summary>
/// <param name="evaluation"> The <see cref="RuleEvaluation" /> . </param>
/// <returns> A validation message <see cref="string" /> . </returns>
public string GetMessage(RuleEvaluation evaluation)
{
if (evaluation.Rule != null)
{
var failure = evaluation as FailedEvaluation;
if (!string.IsNullOrEmpty(failure?.ErrorCode))
{
if (messages.ContainsKey(failure.ErrorCode))
{
return(messages[failure.ErrorCode]);
}
}
if (!string.IsNullOrEmpty(evaluation.MessageTemplate) && evaluation.Parameters != null)
{
return(MessageGenerator.Detokenize(evaluation.MessageTemplate, evaluation.Parameters));
}
}
return(BuildMessage(evaluation));
}
public virtual string GetMessage(RuleEvaluation evaluation) => value;
private void NotifyRuleEvaluated(RuleEvaluation evaluation)
{
RuleEvaluated?.Invoke(this, new RuleEvaluatedEventArgs(evaluation));
parent?.NotifyRuleEvaluated(evaluation);
}
internal static void SetCurrentRuleEvaluation(RuleEvaluation evaluation) => CallContext.LogicalSetData(RuleEvaluationKey, evaluation);
