public static ElementSchemaLookup CreateLookup(Type type, PackageCache cache)
{
List <ElementInfo> lookup = null;
foreach (var child in GetChildTypes(type))
{
if (lookup == null)
{
lookup = new List <ElementInfo>();
}
var schema = child.GetTypeInfo().GetCustomAttribute <SchemaAttrAttribute>();
if (schema == null)
{
throw new InvalidOperationException($"{child} does not contain schema information");
}
var key = new ElementInfo(schema.NamespaceId, schema.Tag, cache.GetFactory <OpenXmlElement>(child));
lookup.Add(key);
}
if (lookup == null)
{
return(Empty);
}
lookup.Sort(ElementInfoComparer.Instance);
return(new ElementSchemaLookup(lookup));
}
public T Create()
{
if (_activator is null)
{
lock (this)
{
if (_activator is null)
{
_activator = _cache.GetFactory <T>(_property.PropertyType);
_cache = null;
CleanUp();
}
}
}
return(_activator());
}