public GraphContainer <TNodeId, TNodeData, TEdgeId, TEdgeData> GetNodeExpansions(
TNodeId nodeId,
bool isSource = true,
bool isTarget = true,
string[] nodeFilter = null,
string[] edgeFilter = null,
Pagination nodePagination = null,
Pagination edgePagination = null
)
{
HashSet <Edge <TEdgeData, TEdgeId, TNodeId> > edges;
if (!isSource && !isTarget)
{
throw new BadExpansionRequest("Either parameters \"isSource\" or \"isTarget\" must be true");
}
else if (isSource && isTarget)
{
edges = _edgeService.GetEdgesBySideId(nodeId, edgeFilter).ToHashSet();
}
else if (isSource)
{
edges = _edgeService.GetEdgesBySourceId(nodeId, edgeFilter).ToHashSet();
}
else
{
edges = _edgeService.GetEdgesByTargetId(nodeId, edgeFilter).ToHashSet();
}
var filteredNodes = _nodeService.GetNodesByFilter(nodeFilter, nodePagination);
var filteredNodesIds = filteredNodes.Select(fn => fn.Id);
var sourceTargetNodeIds = edges.SelectMany(edge => new TNodeId[] { edge.Source, edge.Target }).ToHashSet();
var sourceTargetNodes = _nodeService.GetNodesById(sourceTargetNodeIds.ToArray());
var allNodeIds = filteredNodesIds.Intersect(sourceTargetNodeIds).ToHashSet();
var allNodes = filteredNodes.Intersect(sourceTargetNodes).ToHashSet();
edges = edges.Where(
e => allNodeIds.Contains(e.Source) && allNodeIds.Contains(e.Target))
.ToHashSet();
return(new GraphContainer <TNodeId, TNodeData, TEdgeId, TEdgeData>(
allNodes.ToList(),
edges.ToList()
));
}
public IActionResult GetEdgeBySideId(string sideNodeId)
{
return(Ok(_edgeService.GetEdgesBySideId(sideNodeId)));
}