private static Dictionary<string, PropertyData> WriteExtendedProperties(PropertyChange propertyChange, EntityChangeType changeType)
{
var result = new Dictionary<string, PropertyData>();
var collectionName = propertyChange.PropertyName;
var oldColl = propertyChange.OldValue == null ? new Hashtable() : (IDictionary)propertyChange.OldValue;
var newColl = propertyChange.NewValue == null ? new Hashtable() : (IDictionary)propertyChange.NewValue;
// obtain unique set of keys over both items
var keys = CollectionUtils.Unique(CollectionUtils.Concat(oldColl.Keys, newColl.Keys));
// enumerate each key
foreach (var key in keys)
{
var oldValue = oldColl.Contains(key) ? oldColl[key] : null;
var newValue = newColl.Contains(key) ? newColl[key] : null;
// has this "property" changed?
if (!Equals(oldValue, newValue))
{
var propertyName = string.Concat(collectionName, ".", key);
var propertyData = WriteProperty(oldValue, newValue, changeType);
result.Add(propertyName, propertyData);
}
}
return result;
}
/// <summary>
/// Constructor
/// </summary>
public EntityChange(EntityRef entityRef, EntityChangeType changeType, PropertyChange[] propertyChanges)
{
_entityRef = entityRef;
_changeType = changeType;
_propertyChanges = propertyChanges;
}