private GraphStructure BuildCurrentGraphStructure(FactUnit currentFactUnit)
{
var tripleList = currentFactUnit.GetFactUnit;
int edgeCounter = Variable.VariableZero;
HashSet <string> nodeNameSet = new HashSet <string>();
List <GraphNode> graphNodeList = new List <GraphNode>();
foreach (var triple in tripleList)
{
var currentSubject = triple.SubjectValue;
var currentPredicate = triple.PredicateValue;
var currentObject = triple.ObjectValue;
int PredicateID = ++edgeCounter;
#region single single
if (!currentSubject.Contains(Variable.VariableAnd) && !currentObject.Contains(Variable.VariableOr))//single variable
{
GraphEdge outLinkEdge = new GraphEdge(currentPredicate, PredicateID, currentObject);
GraphEdge inLinkEdge = new GraphEdge(currentPredicate, PredicateID, currentSubject);
graphNodeList = UpdateSingleSubject(ref nodeNameSet, currentSubject, graphNodeList, outLinkEdge);
graphNodeList = UpdateSingleObject(ref nodeNameSet, currentObject, graphNodeList, inLinkEdge);
}
#endregion
else if (!currentSubject.Contains(Variable.VariableAnd) && currentObject.Contains(Variable.VariableOr))
{
if (currentObject.Contains(Variable.VariableAnd))
{
throw new Exception();
}
if (!currentObject.Contains(Variable.VariableOr))
{
throw new Exception();
}
var tempObject = currentObject.Replace(Variable.VariableOr + Variable.SpaceString, Variable.NullString);
string[] objectArray = tempObject.Split(new char[] { Variable.SpaceChar }, StringSplitOptions.RemoveEmptyEntries);
foreach (var ele in objectArray)
{
var outLinkEdge = new GraphEdge(currentPredicate, PredicateID, ele.Trim());
graphNodeList = UpdateSingleSubject(ref nodeNameSet, currentSubject, graphNodeList, outLinkEdge);
}
var inLinkEdge = new GraphEdge(currentPredicate, PredicateID, currentSubject);
foreach (var ele in objectArray)
{
graphNodeList = UpdateSingleObject(ref nodeNameSet, ele.Trim(), graphNodeList, inLinkEdge);
}
}
else if (currentSubject.Contains(Variable.VariableAnd) && !currentObject.Contains(Variable.VariableOr))
{
if (currentSubject.Contains(Variable.VariableOr))
{
throw new Exception();
}
if (!currentSubject.Contains(Variable.VariableAnd))
{
throw new Exception();
}
var tempSubject = currentSubject.Replace(Variable.VariableAnd + Variable.SpaceString, Variable.NullString);
string[] subjectArray = tempSubject.Split(new char[] { Variable.SpaceChar }, StringSplitOptions.RemoveEmptyEntries);
var outLinkEdge = new GraphEdge(currentPredicate, PredicateID, currentObject);
foreach (var ele in subjectArray)
{
graphNodeList = UpdateSingleSubject(ref nodeNameSet, ele.Trim(), graphNodeList, outLinkEdge);
}
foreach (var ele in subjectArray)
{
var inLinkEdge = new GraphEdge(currentPredicate, PredicateID, ele.Trim());
graphNodeList = UpdateSingleObject(ref nodeNameSet, currentObject, graphNodeList, inLinkEdge);
}
}
else if (currentSubject.Contains(Variable.VariableAnd) && currentObject.Contains(Variable.VariableOr))
{
throw new Exception();
}
}
return(new GraphStructure(nodeNameSet, edgeCounter, graphNodeList));
}
private List <GraphNode> UpdateSingleSubject(ref HashSet <string> nodeNameSet, string currentSubject, List <GraphNode> graphNodeList, GraphEdge outLinkEdge)
{
if (nodeNameSet.Contains(currentSubject))//update node
{
var index = GetGraphNodeIndex(currentSubject, graphNodeList);
var edgeList = graphNodeList[index].OutLinks;
var outLinkEdgeList = new List <GraphEdge>(edgeList);
outLinkEdgeList.Add(outLinkEdge);
graphNodeList[index] = new GraphNode(currentSubject, outLinkEdgeList, graphNodeList[index].InLinks);
return(graphNodeList);
}
else//add node
{
graphNodeList.Add(new GraphNode(currentSubject, new List <GraphEdge> {
outLinkEdge
}, new List <GraphEdge>()));
nodeNameSet.Add(currentSubject);
return(graphNodeList);
}
}
private List <GraphNode> UpdateSingleObject(ref HashSet <string> nodeNameSet, string currentObject, List <GraphNode> graphNodeList, GraphEdge inLinkEdge)
{
if (nodeNameSet.Contains(currentObject))//update
{
var index = GetGraphNodeIndex(currentObject, graphNodeList);
var edgeList = graphNodeList[index].InLinks;
var inLinkEdgeList = new List <GraphEdge>(edgeList);
inLinkEdgeList.Add(inLinkEdge);
graphNodeList[index] = new GraphNode(currentObject, graphNodeList[index].OutLinks, inLinkEdgeList);
return(graphNodeList);
}
else//add
{
graphNodeList.Add(new GraphNode(currentObject, new List <GraphEdge>(), new List <GraphEdge> {
inLinkEdge
}));
nodeNameSet.Add(currentObject);
return(graphNodeList);
}
}