public override void ChangeEdge(TEdge sinkEdge, TItem newItem, bool changeRoot)
{
Func <TItem> getItem = () => changeRoot ? sinkEdge.Root : sinkEdge.Leaf;
Action <TItem> setItem = item => { if (changeRoot)
{
sinkEdge.Root = item;
}
else
{
sinkEdge.Leaf = item;
} };
var itemBefore = getItem();
Source.ChangeEdge(sinkEdge, newItem, changeRoot);
var lockObj = (object)sinkEdge;
lock (lockObj) {
// revert the changes, otherwise edge is not removed from Sink.Edges(itemBefore)
setItem(itemBefore);
Sink.ChangeEdge(sinkEdge, newItem, changeRoot);
// ensure the changes are done
if (!object.Equals(getItem(), newItem))
{
setItem(newItem);
}
}
}
public override void ChangeEdge(TSinkEdge sinkEdge, TSinkItem newItem, bool changeRoot)
{
var source = Get(sinkEdge);
Sink.ChangeEdge(sinkEdge, newItem, changeRoot);
if (source != null)
{
var sourceEdge = (TSourceEdge)source;
var newSourceEdge = Mapper.TryGetCreate(newItem);
Source.ChangeEdge(sourceEdge, newSourceEdge, changeRoot);
}
}
