public void Add(TKey key, TValue value)
{
LookupValueCollection <TValue> values = null;
if (!dictionary.TryGetValue(key, out values))
{
values = new LookupValueCollection <TValue>();
dictionary.Add(key, values);
}
values.Add(value);
}
public LookupValueCollection <TValue> this[TKey key]
{
get
{
LookupValueCollection <TValue> values = null;
if (dictionary.TryGetValue(key, out values))
{
return(values);
}
return(null);
}
}
/// <summary>
/// Finds node that represents the same instance as given value.
/// </summary>
/// <param name="value">Valid value representing an instance.</param>
/// <returns></returns>
private ObjectGraphNode getExistingNodeForValue(Value value)
{
int objectHashCode = value.InvokeDefaultGetHashCode();
// are there any nodes with the same hash code?
LookupValueCollection <ObjectGraphNode> nodesWithSameHashCode = objectNodesForHashCode[objectHashCode];
if (nodesWithSameHashCode == null)
{
return(null);
}
else
{
// if there is a node with same hash code, check if it has also the same address
// (hash codes are not uniqe - http://stackoverflow.com/questions/750947/-net-unique-object-identifier)
ulong objectAddress = value.GetObjectAddress();
ObjectGraphNode nodeWithSameAddress = nodesWithSameHashCode.Find(
node => { return(node.PermanentReference.GetObjectAddress() == objectAddress); });
return(nodeWithSameAddress);
}
}