public ChangeSet(ValueChange <TParentToken> parentToken, ValueChange <IEnumerable <TChildToken> > childTokens)
{
OldIds = Ids(childTokens.OldValue).ToArray();
NewIds = Ids(childTokens.NewValue).ToArray();
RemovedIds = Ids(ExceptIds(childTokens.OldValue, NewIds)).ToArray();
AddedIds = Ids(ExceptIds(childTokens.NewValue, OldIds)).ToArray();
PersistentIds = NewIds.Intersect(OldIds).ToArray();
var persistedOld = IntersectIds(childTokens.OldValue, PersistentIds).OrderBy(t => t.Id);
var persistedNew = IntersectIds(childTokens.NewValue, PersistentIds).OrderBy(t => t.Id);
var persistedPairs = persistedOld.Zip(persistedNew, ValueChange.Create);
Diffs = persistedPairs.Where(vc => vc.IsChanged()).ToArray();
AddedChanges = AddedIds.Select(id => Change.Added(parentToken.NewValue.Id, id)).ToArray();
RemovedChanges = RemovedIds.Select(id => Change.Removed(parentToken.NewValue.Id, id)).ToArray();
}
/// <summary>
/// Merges a <see cref="ModelValueChangeEvent"/> into the current event.
/// </summary>
/// <param name="e"></param>
/// <returns></returns>
protected override bool OnMerge(ModelEvent e)
{
// Ensure the events are for the same reference property
var listChange = (ModelListChangeEvent)e;
if (listChange.Property != Property)
{
return(false);
}
// Highly likely not to be right
var mergeAdded = Added.ToList();
mergeAdded.RemoveAll(i => listChange.Removed.Contains(i));
var mergeRemoved = Removed.ToList();
mergeRemoved.RemoveAll(i => listChange.Added.Contains(i));
mergeAdded = mergeAdded.Union(listChange.Added.Where(i => !Removed.Contains(i))).ToList();
mergeRemoved = mergeRemoved.Union(listChange.Removed.Where(i => !Added.Contains(i))).ToList();
Added = mergeAdded.ToArray();
Removed = mergeRemoved.ToArray();
var mergeAddedIds = AddedIds.ToList();
mergeAddedIds.RemoveAll(i => listChange.RemovedIds.Contains(i));
var mergeRemovedIds = RemovedIds.ToList();
mergeRemovedIds.RemoveAll(i => listChange.AddedIds.Contains(i));
mergeAddedIds = mergeAddedIds.Union(listChange.AddedIds.Where(i => !RemovedIds.Contains(i))).ToList();
mergeRemovedIds = mergeRemovedIds.Union(listChange.RemovedIds.Where(i => !AddedIds.Contains(i))).ToList();
AddedIds = mergeAddedIds.ToArray();
RemovedIds = mergeRemovedIds.ToArray();
return(true);
}
/// <summary>
/// Gets real record identifier matching specified phantom one.
/// </summary>
/// <param name="table">Table name.</param>
/// <param name="phantomId">Phantom identifier.</param>
/// <returns>Real record identifier.</returns>
public int?getIdByPhantom(String table, String phantomId)
{
if (!AddedIds.ContainsKey(table))
{
return(null);
}
IDictionary <String, int> map = AddedIds[table];
if (map == null)
{
return(null);
}
// get real task Id
if (phantomId != null && map.ContainsKey(phantomId))
{
return(map[phantomId]);
}
return(null);
}
public void AddChange(ChangeTableEvent dataRowToChangeTableEvent)
{
if (dataRowToChangeTableEvent.EventType == EventType.Add)
{
AddedIds.Add(dataRowToChangeTableEvent.PrimaryKeyId);
}
else if (dataRowToChangeTableEvent.EventType == EventType.Delete)
{
DeletedIds.Add(dataRowToChangeTableEvent.PrimaryKeyId);
}
else
{
throw new NotSupportedException(
$"Datachange of type {dataRowToChangeTableEvent.EventType} is not supported");
}
if (HighestVersionAdded < dataRowToChangeTableEvent.Version)
{
HighestVersionAdded = dataRowToChangeTableEvent.Version;
}
}
