public static bool IsValueEmptyCollection(this JsonProperty property, object target)
{
var value = property.ValueProvider.GetValue(target);
if (value == null)
{
return(true);
}
var collection = value as ICollection;
if (collection != null && collection.Count == 0)
{
return(true);
}
if (!_countAccessors.ContainsKey(property.PropertyType))
{
if (typeof(IEnumerable).IsAssignableFrom(property.PropertyType))
{
var countProperty = property.PropertyType.GetProperty("Count");
if (countProperty != null)
{
_countAccessors.AddOrUpdate(property.PropertyType, LateBinder.GetPropertyAccessor(countProperty));
}
else
{
_countAccessors.AddOrUpdate(property.PropertyType, null);
}
}
else
{
_countAccessors.AddOrUpdate(property.PropertyType, null);
}
}
var countAccessor = _countAccessors[property.PropertyType];
if (countAccessor == null)
{
return(false);
}
var count = (int)countAccessor.GetValue(value);
return(count == 0);
}
public DataObjectConverter(IEnumerable <KeyValuePair <string, Type> > knownDataTypes = null)
{
if (knownDataTypes != null)
{
_dataTypeRegistry.AddRange(knownDataTypes);
}
if (_propertyAccessors.Count != 0)
{
return;
}
foreach (var prop in typeof(T).GetProperties(BindingFlags.Instance | BindingFlags.FlattenHierarchy | BindingFlags.Public).Where(p => p.CanWrite))
{
_propertyAccessors.Add(prop.Name, LateBinder.GetPropertyAccessor(prop));
}
}