/// <summary>
/// Returns the title from the underlying business object. If the object has not yet been resolved the
/// specification will be asked for a unresolved title, which could of been persisted by the persistence
/// mechanism. If either of the above provides null as the title then this method will return a title
/// relating to the name of the object type, e.g. "A Customer", "A Product".
/// </summary>
public string TitleString()
{
try {
if (Spec.IsCollection && !Spec.IsParseable)
{
return(CollectionTitleString(Spec.GetFacet <ICollectionFacet>()));
}
return(Spec.GetTitle(this) ?? DefaultTitle);
}
catch (Exception e) {
throw new TitleException(Log.LogAndReturn("Exception on ToString POCO: " + (poco == null ? "unknown" : poco.GetType().FullName)), e);
}
}
private Tuple <INakedObjectAdapter, TypeOfDefaultValue> GetDefaultValueAndType(INakedObjectAdapter nakedObjectAdapter)
{
if (parentAction.IsContributedMethod && nakedObjectAdapter != null)
{
IActionParameterSpec[] matchingParms = parentAction.Parameters.Where(p => nakedObjectAdapter.Spec.IsOfType(p.Spec)).ToArray();
if (matchingParms.Any() && matchingParms.First() == this)
{
return(new Tuple <INakedObjectAdapter, TypeOfDefaultValue>(nakedObjectAdapter, TypeOfDefaultValue.Explicit));
}
}
Tuple <object, TypeOfDefaultValue> defaultValue = null;
// Check Facet on parm, then facet on type finally fall back on type;
var defaultsFacet = GetFacet <IActionDefaultsFacet>();
if (defaultsFacet != null && !defaultsFacet.IsNoOp)
{
defaultValue = defaultsFacet.GetDefault(parentAction.RealTarget(nakedObjectAdapter));
}
if (defaultValue == null)
{
var defaultFacet = Spec.GetFacet <IDefaultedFacet>();
if (defaultFacet != null && !defaultFacet.IsNoOp)
{
defaultValue = new Tuple <object, TypeOfDefaultValue>(defaultFacet.Default, TypeOfDefaultValue.Implicit);
}
}
if (defaultValue == null)
{
object rawValue = nakedObjectAdapter == null ? null : nakedObjectAdapter.Object.GetType().IsValueType ? (object)0 : null;
defaultValue = new Tuple <object, TypeOfDefaultValue>(rawValue, TypeOfDefaultValue.Implicit);
}
return(new Tuple <INakedObjectAdapter, TypeOfDefaultValue>(manager.CreateAdapter(defaultValue.Item1, null, null), defaultValue.Item2));
}
private object CallCallbackAndReturn <T>() where T : ICallbackFacet
{
return(Spec.GetFacet <T>()?.InvokeAndReturn(this, session, lifecycleManager, metamodel, persistor));
}
// todo - better to handle null facet or bind in noop facet ? private void CallCallback <T>() where T : ICallbackFacet => Spec.GetFacet <T>()?.Invoke(this, session, lifecycleManager, metamodel);