public (bool, List <VisulizedVertex>, List <VisulizedEdge>) GetFirstLevelRelationships(string vId)
{
if (this.kgDF == null)
{
return(false, null, null);
}
Vertex vertex = this.kgDF.GetVertexById(vId);
if (vertex == null)
{
return(true, null, null);
}
List <VisulizedVertex> rVVs = new List <VisulizedVertex>();
List <VisulizedEdge> rVEs = new List <VisulizedEdge>();
if (vertex.properties != null && vertex.properties.Count > 0)
{
foreach (VertexProperty property in vertex.properties)
{
VisulizedVertex vP = KGUtility.GeneratePropertyVVertex(vertex.label, property.name, property.value);
rVVs.Add(vP);
VisulizedEdge vEdge = new VisulizedEdge();
vEdge.value = vP.displayName;
vEdge.sourceId = vertex.id;
vEdge.targetId = vP.id;
rVEs.Add(vEdge);
}
}
List <VisulizedVertex> tmpRVVs;
List <VisulizedEdge> tmpRVEs;
Dictionary <RelationLink, List <string> > childrenLinkDict = this.kgDF.GetChildrenLinkDict(vId);
HashSet <string> addedIDs = new HashSet <string>();
if (childrenLinkDict != null)
{
(tmpRVVs, tmpRVEs) = GetConnectedVertexesAndEdges(addedIDs, vId, childrenLinkDict, true);
rVVs.AddRange(tmpRVVs);
rVEs.AddRange(tmpRVEs);
}
Dictionary <RelationLink, List <string> > parentLinkDict = this.kgDF.GetParentLinkDict(vId);
if (parentLinkDict != null)
{
(tmpRVVs, tmpRVEs) = GetConnectedVertexesAndEdges(addedIDs, vId, parentLinkDict, false);
rVVs.AddRange(tmpRVVs);
rVEs.AddRange(tmpRVEs);
}
return(true, rVVs, rVEs);
}
public async Task <ActionResult <IResult> > Filter(string datastoreName, string name, string value)
{
RelationResult filterResult;
if (string.IsNullOrWhiteSpace(datastoreName) || string.IsNullOrWhiteSpace(name) || string.IsNullOrWhiteSpace(value))
{
filterResult = new RelationResult(false, "datastoreName, 属性名和属性值都不能为空");
}
else
{
name = name.ToLower();
value = value.ToLower();
GraphExecutor executor = new GraphExecutor(datastoreName);
(bool isDSExist, List <VisulizedVertex> vvs) = executor.FilterVertexesByProperty(name, value);
if (!isDSExist)
{
filterResult = new RelationResult(false, "Datastore " + datastoreName + "不存在，或没有数据导入。");
}
else
{
if (vvs == null || vvs.Count == 0)
{
filterResult = new RelationResult(true, "根据\"" + name + " = " + value + ",\"未能找到任何符合条件的节点。");
}
else
{
VisulizedVertex propertyVV = KGUtility.GeneratePropertyVVertex("", name, value);
filterResult = new RelationResult(true, "根据\"" + name + " = " + value + ",\"为您搜索到以下节点：");
List <VisulizedEdge> ves = new List <VisulizedEdge>();
foreach (VisulizedVertex vv in vvs)
{
VisulizedEdge ve = new VisulizedEdge();
ve.value = name;
ve.sourceId = propertyVV.id;
ve.targetId = vv.id;
ves.Add(ve);
}
vvs.Insert(0, propertyVV);
filterResult.nodes = vvs;
filterResult.relations = ves;
}
}
}
log.Here().Information("[Response]: " + JsonConvert.SerializeObject(filterResult));
return(Ok(filterResult));
}
private (List <VisulizedVertex>, List <VisulizedEdge>) GetConnectedVertexesAndEdges(HashSet <string> addedIDs, string vId, Dictionary <RelationLink, List <string> > relationDict, bool vIsSrc)
{
List <VisulizedVertex> rVVs = new List <VisulizedVertex>();
List <VisulizedEdge> rVEs = new List <VisulizedEdge>();
HashSet <string> cIdSet = new HashSet <string>();
if (relationDict != null && relationDict.Count > 0)
{
foreach (RelationLink link in relationDict.Keys)
{
string relationType = link.relationType;
foreach (string cId in relationDict[link])
{
if (cIdSet.Contains(cId))
{
continue;
}
cIdSet.Add(cId);
VisulizedVertex vRV = ConvertVertex(this.kgDF.GetVertexById(cId));
VisulizedEdge vRE = new VisulizedEdge();
vRE.value = relationType;
if (vIsSrc)
{
vRE.sourceId = vId;
vRE.targetId = vRV.id;
}
else
{
vRE.targetId = vId;
vRE.sourceId = vRV.id;
}
if (!addedIDs.Contains(vRV.id))
{
rVVs.Add(vRV);
addedIDs.Add(vRV.id);
}
rVEs.Add(vRE);
}
}
}
return(rVVs, rVEs);
}
private VisulizedVertex ConvertVertex(Vertex vertex)
{
if (vertex == null)
{
return(null);
}
VisulizedVertex vv = new VisulizedVertex();
vv.id = vertex.id;
vv.name = vertex.name;
vv.displayName = vertex.name;
vv.label = vertex.label;
return(vv);
}
public static VisulizedVertex GeneratePropertyVVertex(string vertexLabel, string pName, string pValue)
{
if (string.IsNullOrWhiteSpace(vertexLabel))
{
vertexLabel = "";
}
else
{
vertexLabel = "_" + vertexLabel;
}
VisulizedVertex propertyVV = new VisulizedVertex();
propertyVV.name = pValue;
propertyVV.displayName = pName;
propertyVV.label = vertexLabel + "属性";
propertyVV.id = GenerateIdForProperty(pName, pValue);
return(propertyVV);
}
public async Task <ActionResult <IResult> > GetRelations(string id)
{
RelationResult relationResult;
if (string.IsNullOrWhiteSpace(id))
{
relationResult = new RelationResult(false, "id不能为空");
}
else
{
GraphExecutor executor = new GraphExecutor();
VisulizedVertex theVVertex = executor.GetVertexById(id);
if (theVVertex == null)
{
relationResult = new RelationResult(true, "无法找到节点 " + id + "。");
}
else
{
(List <VisulizedVertex> vvs, List <VisulizedEdge> ves) = executor.GetFirstLevelRelationships(id);
relationResult = new RelationResult(true, "节点 id =" + id + " 的一阶关系如下：");
relationResult.nodes = vvs;
if (relationResult.nodes == null)
{
relationResult.nodes = new List <VisulizedVertex> {
theVVertex
};
}
else
{
relationResult.nodes.Add(theVVertex);
}
relationResult.relations = ves;
}
}
log.Here().Information("[Response]: " + JsonConvert.SerializeObject(relationResult));
return(Ok(relationResult));
}