/// <summary>
/// Recursively attaches the current condition to targets in the model.
/// </summary>
/// <param name="target"></param>
/// <param name="steps"></param>
void AddTarget(ModelInstance target, IEnumerable <ModelStep> steps)
{
// Get or create a condition target for the current instance
ConditionTarget conditionTarget = targets.FirstOrDefault(ct => ct.Target == target);
if (conditionTarget == null)
{
conditionTarget = new ConditionTarget(this, target);
targets.Add(conditionTarget);
}
// Process each step along the path
foreach (var step in steps)
{
// Add the property for the current step
conditionTarget.AddProperty(step.Property.Name);
// Stop processing if the current step is a leaf property
if (step.NextSteps.Count == 0)
{
continue;
}
// Recursively process child instances
foreach (var child in step.GetInstances(target))
{
AddTarget(child, step.NextSteps);
}
}
}
/// <summary>
/// Creates or removes an condition on the specified target based on the specified condition.
/// </summary>
/// <param name="target"></param>
/// <param name="condition"></param>
/// <param name="properties"></param>
public Condition When(string message, object target, Func <bool> condition, params string[] properties)
{
// Get the current condition if it exists
ConditionTarget conditionTarget = ModelInstance.GetModelInstance(target).GetExtension <RuleManager>().GetCondition(this);
// Add the condition on the target if it does not exist yet
if (condition())
{
// Create a new condition if one does not exist
if (conditionTarget == null)
{
return(new Condition(this, message, target, properties));
}
// Return the existing condition
else
{
// Update the message if a different message was passed in
if (!string.IsNullOrEmpty(message) && message != conditionTarget.Condition.Message)
{
conditionTarget.Condition.Message = message;
}
return(conditionTarget.Condition);
}
}
// Destroy the condition if it exists on the target and is no longer valid
if (conditionTarget != null)
{
conditionTarget.Condition.Destroy();
}
// Return null to indicate that no condition was created
return(null);
}
/// <summary>
/// Recursively attaches the current condition to targets in the model.
/// </summary>
/// <param name="target"></param>
/// <param name="steps"></param>
void AddTarget(ModelInstance target, IEnumerable<ModelStep> steps)
{
// Get or create a condition target for the current instance
ConditionTarget conditionTarget = targets.FirstOrDefault(ct => ct.Target == target);
if (conditionTarget == null)
{
conditionTarget = new ConditionTarget(this, target);
targets.Add(conditionTarget);
}
// Process each step along the path
foreach (var step in steps)
{
// Add the property for the current step
conditionTarget.AddProperty(step.Property.Name);
// Stop processing if the current step is a leaf property
if (step.NextSteps.Count == 0)
continue;
// Recursively process child instances
foreach (var child in step.GetInstances(target))
AddTarget(child, step.NextSteps);
}
}
internal void SetCondition(ConditionTarget conditionTarget)
{
conditions[conditionTarget.Condition.Type.Code] = conditionTarget;
}
internal void SetCondition(ConditionTarget conditionTarget)
{
conditions[conditionTarget.Condition.Type.Code] = conditionTarget;
}