private ModelMetadataRegistryItem CheckMetadataAndApplyConvetions([NotNull] Type modelType, ModelMetadataRegistryItem item)
{
if (conventions.Count == 0 || NoNeedToApplyConvetionsFor(modelType, item))
{
return(item);
}
lock (this)
{
if (NoNeedToApplyConvetionsFor(modelType, item))
{
return(item);
}
ModelMetadataRegistryItem registeredItem;
// ensure that conventions were not appied by another thread
if (mappings.TryGetValue(modelType, out registeredItem) && registeredItem.IsConventionsApplied)
{
return(registeredItem);
}
var context = new AcceptorContext(modelType, item != null);
var canAcceptConventions = ConventionAcceptor.CanAcceptConventions(context);
if (!canAcceptConventions)
{
ProcessUnacceptedModelType(modelType, item);
return(item);
}
if (item == null)
{
// try get existing (item can be created by another thread) or create new
item = GetOrCreate(modelType);
}
// ensure convenstion is not applied yet
if (item.IsConventionsApplied)
{
return(item);
}
ApplyMetadataConvenstions(modelType, item);
}
return(item);
}
/// <summary>
/// Checks whether metadata for class can be accepted
/// </summary>
/// <param name="context"></param>
/// <returns></returns>
public virtual bool CanAcceptConventions([NotNull] AcceptorContext context)
{
return(context.HasMetadataConfiguration);
}
