/// <summary>
/// Gets an instance of the template using the cached compiled type, or compiles the template type
/// if it does not exist in the cache.
/// </summary>
/// <typeparam name="T">Type of the model</typeparam>
/// <param name="razorTemplate">The string template.</param>
/// <param name="model">The model instance or NULL if there is no model for this template.</param>
/// <param name="cacheName">The name of the template type in the cache.</param>
/// <returns>
/// An instance of <see cref="ITemplate{T}" />.
/// </returns>
private ITemplate GetTemplate <T>(string razorTemplate, object model, string cacheName)
{
if (razorTemplate == null)
{
throw new ArgumentNullException("razorTemplate");
}
var hashCode = razorTemplate.GetHashCode();
CachedTemplateItem item;
if (!(_cache.TryGetValue(cacheName, out item) && item.CachedHashCode == hashCode))
{
var type = CreateTemplateType(razorTemplate, (model == null) ? typeof(T) : model.GetType(), new NullLogger());
item = new CachedTemplateItem(hashCode, type);
_cache.AddOrUpdate(cacheName, item, (n, i) => item);
}
var instance = CreateTemplate(null, item.TemplateType, model, new NullLogger());
return(instance);
}
