private static VFlibcs.Graph TransToVFGraph(Node node)
{
nodeDictionary.Clear();
_usedEdge.Clear();
VFlibcs.Graph result = new VFlibcs.Graph();
nodeDictionary.Add(node, result.InsertNode(node));
InsertGraph(result, node);
return(result);
}
// DFS Insert node.
private static void InsertGraph(VFlibcs.Graph graph, Node node)
{
foreach (Node child in node.Children)
{
if (child == null)
{
continue;
}
// If the node have not set then set it.
if (!nodeDictionary.ContainsKey(child))
{
nodeDictionary.Add(child, graph.InsertNode(child));
}
string stringEdge = nodeDictionary[node] + "+" + nodeDictionary[child];
if (_usedEdge.Exists(x => x == stringEdge))
{
continue;
}
// Set edge.
graph.InsertEdge(nodeDictionary[node], nodeDictionary[child]);
_usedEdge.Add(stringEdge);
InsertGraph(graph, child);
}
foreach (var parent in node.Parents)
{
if (parent == null)
{
continue;
}
// If the node have not set then set it.
if (!nodeDictionary.ContainsKey(parent))
{
nodeDictionary.Add(parent, graph.InsertNode(parent));
}
string stringEdge = nodeDictionary[parent] + "+" + nodeDictionary[node];
if (_usedEdge.Exists(x => x == stringEdge))
{
continue;
}
// Set edge.
graph.InsertEdge(nodeDictionary[parent], nodeDictionary[node]);
_usedEdge.Add(stringEdge);
InsertGraph(graph, parent);
}
}
// Step 1: Find matchs.
private static Rule FindMatchs(VFlibcs.Graph graphVF)
{
foreach (var rule in RandomOrderByWeight())
{
if (rule.QuantityLimitMax == 0)
{
continue;
}
// VfState: Calculate the result of subgraph isomorphic.
VFlibcs.VfState vfs = new VFlibcs.VfState(graphVF, _ruleVFgraphTable[rule], false, true);
if (vfs.FMatch())
{
// Reduce the quantity limit.
if (rule.QuantityLimitMin > 0)
{
rule.QuantityLimitMin -= 1;
}
if (rule.QuantityLimitMax > 0)
{
rule.QuantityLimitMax -= 1;
}
_relatedNodes.Clear();
for (int i = 0; i < vfs.Mapping2To1.Length; i++)
{
// Set Index.
Node node = graphVF.GetNodeAttr(vfs.Mapping2To1[i]) as Node;
// Record this one is used in this iterating.
node.Explored = true;
_exploredNodeStack.Push(node);
if (node.IsEdge)
{
continue;
}
node.Index = (_ruleVFgraphTable[rule].GetNodeAttr(i) as Node).Index;
_relatedNodes.Add(node);
}
return(rule);
}
}
return(null);
}
