private PropertyContextSurface ChangeProperty(INakedObject nakedObject, string propertyName, ArgumentContext argument) {
ValidateConcurrency(nakedObject, argument.Digest);
PropertyContext context = CanChangeProperty(nakedObject, propertyName, argument.Value);
if (string.IsNullOrEmpty(context.Reason)) {
var spec = context.Target.Spec as IObjectSpec;
Trace.Assert(spec != null);
IEnumerable<PropertyContext> existingValues = spec.Properties.Where(p => p.Id != context.Id).
Select(p => new {p, no = p.GetNakedObject(context.Target)}).
Select(ao => new PropertyContext {
Property = ao.p,
ProposedNakedObject = ao.no,
ProposedValue = ao.no == null ? null : ao.no.Object,
Target = context.Target
}
).Union(new[] {context});
var objectContext = new ObjectContext(context.Target) {VisibleProperties = existingValues.ToArray()};
if (ConsentHandler(CrossValidate(objectContext), objectContext, Cause.Other)) {
if (!argument.ValidateOnly) {
SetProperty(context);
}
}
else {
context.Reason = objectContext.Reason;
context.ErrorCause = objectContext.ErrorCause;
}
}
context.Mutated = true; // mark as changed even if property not actually changed to stop self rep
return context.ToPropertyContextSurface(this, framework);
}
