public virtual void RemoveEdge(Relation <T, P> relation)
{
if (relation == null)
{
Log.Error("Relation is null.");
return;
}
if (!Edges.Remove(relation))
{
Log.Error("Relation is not part of the graph: " + relation);
return;
}
VerticesData[relation.Source].OutEdges.Remove(relation);
VerticesData[relation.Target].InEdges.Remove(relation);
if (!relation.IsSelfRelation)
{
recalcIsTree = true;
if (!HasParents(relation.Target))
{
RootVertices.Add(relation.Target);
}
}
}
public virtual void AddVertex(T vertex)
{
if (vertex == null)
{
Log.Error("Vertex is null.");
return;
}
if (VerticesData.ContainsKey(vertex))
{
Log.Error("Vertex is already part of the graph: " + vertex);
return;
}
VerticesData[vertex] = new VertexData <T, P>(vertex);
recalcIsTree = true;
RootVertices.Add(vertex);
}