public object CreateObject(
IScopedStateDescriptor <TKey> descriptor,
Func <object> serviceFactory)
{
if (descriptor == null)
{
throw new ArgumentNullException(nameof(descriptor));
}
if (serviceFactory == null)
{
throw new ArgumentNullException(nameof(serviceFactory));
}
if (!_instances.TryGetValue(descriptor.Key, out object instance))
{
lock (_sync)
{
if (!_instances.TryGetValue(descriptor.Key, out instance))
{
instance = serviceFactory();
_instances = _instances
.SetItem(descriptor.Key, instance);
}
}
}
return(instance);
}
public Func <object> CreateFactory(
IServiceProvider services,
IScopedStateDescriptor <TKey> descriptor)
{
if (descriptor.Factory != null)
{
return(() => descriptor.Factory(services));
}
var serviceFactory = new ServiceFactory();
serviceFactory.Services = services;
return(() => serviceFactory.CreateInstance(descriptor.Type));
}
public bool TryGetDescriptor(
TKey key,
out IScopedStateDescriptor <TKey> descriptor)
{
return(_descriptors.TryGetValue(key, out descriptor));
}