internal static void AssertGraphsEqual(PropertyGraphModel expected, PropertyGraphModel actual)
{
var left = (JObject)JsonConvert.DeserializeObject(JsonConvention.SerializeObject(SortGraph(expected)));
var right = (JObject)JsonConvert.DeserializeObject(JsonConvention.SerializeObject(SortGraph(actual)));
Sort(left); Sort(right);
Assert.AreEqual(left.ToString(Formatting.None), right.ToString(Formatting.None));
//Assert.AreEqual(JsonConvention.SerializeObject(SortGraph(expected)), JsonConvention.SerializeObject(SortGraph(actual)));
}
public async override Task Execute(SaveVertexCommand cmd)
{
var vertexProps = await UnitOfWork.Db.VertexProperties.Where(
p => p.VertexId == cmd.VertexId && p.Deleted == null).ToListAsync();
foreach (var propModel in cmd.Props)
{
// close old value if present
var prop = vertexProps.FirstOrDefault(p => p.SchemaUri == propModel.SchemaUri);
// serialize value to json
var jsonValue = JsonConvention.SerializeObject(propModel.Value);
if (prop != null)
{
if (prop.JsonValue == jsonValue)
{
// nothing to update
continue;
}
else
{
// different value - close old property and continue
prop.Deleted = _clock.TimeStamp;
}
}
// if value is null do not add anything
if (propModel.Value == null)
{
continue;
}
// create property
var newProp = new VertexProperty()
{
Id = Guid.NewGuid(),
VertexId = cmd.VertexId,
SchemaUri = propModel.SchemaUri,
Created = _clock.TimeStamp,
JsonValue = jsonValue
};
UnitOfWork.Db.VertexProperties.Add(newProp);
// prevent inserting duplicates
vertexProps.Add(newProp);
}
await Events.OnNext(new SaveVertexCompletedEvent()
{
Command = cmd
});
}
public static HashSet <object> AsSet(this object value)
{
var str = value.ToString();
if (str.StartsWith("[") && str.EndsWith("]"))
{
return(JsonConvention.DeserializeObject <HashSet <object> >(str));
}
return(new HashSet <object>()
{
value
});
}
/// <summary>
/// Assumes layout has been already applied
/// Note: method mutates graph and graphLayout
/// </summary>
public void ImproveAppliedLayout(SigmaGraphModel graph, GraphLayout graphLayout, LayoutSettings layoutSettings, TimeSpan duration)
{
using (var engine = new V8ScriptEngine())
{
try
{
var v8Graph = new V8GraphModel();
v8Graph.LoadSigma(graph);
engine.AddHostObject("log", _log);
engine.Execute("var graph = " + JsonConvention.SerializeObject(v8Graph) + ";");
engine.Execute("var settings = " + JsonConvention.SerializeObject(layoutSettings) + ";");
engine.Execute("var duration = " + JsonConvention.SerializeObject(duration.TotalMilliseconds) + ";");
var baseDirectory = AppDomain.CurrentDomain.BaseDirectory;
var forceAtlas2 = engine.Compile(File.ReadAllText($@"{baseDirectory}\App\Graph\Layout\ForceAtlas2.js"));
var serviceScript = engine.Compile(File.ReadAllText($@"{baseDirectory}\App\Graph\Layout\GraphLayoutService.js"));
engine.Execute(forceAtlas2);
engine.Execute(serviceScript);
var nodesJson = engine.Evaluate("JSON.stringify(nodes)").ToString();
var nodes = JsonConvention.DeserializeObject <V8NodeModel[]>(nodesJson);
for (int i = 0; i < nodes.Length; i++)
{
var node = graph.Nodes[i];
node.X = nodes[i].x;
node.Y = nodes[i].y;
var id = node.Entity;
if (id.HasValue)
{
graphLayout[id.Value] = new GraphLayout.Coords()
{
X = nodes[i].x,
Y = nodes[i].y
};
}
}
}
catch (ScriptEngineException e)
{
_log.Error("V8 exception: " + e.ErrorDetails);
throw;
}
}
}
public async override Task Execute(CreateVertexCommand cmd)
{
UnitOfWork.Db.Vertices.Add(new Vertex()
{
Id = cmd.VertexId,
NetworkId = cmd.NetworkId,
Created = _clock.TimeStamp
});
if (cmd.Props != null)
{
foreach (var propModel in cmd.Props)
{
// serialize value to json
var jsonValue = JsonConvention.SerializeObject(propModel.Value);
// if value is null do not add anything
if (propModel.Value == null)
{
continue;
}
// create property
var newProp = new VertexProperty()
{
Id = Guid.NewGuid(),
VertexId = cmd.VertexId,
SchemaUri = propModel.SchemaUri,
Created = _clock.TimeStamp,
JsonValue = jsonValue
};
UnitOfWork.Db.VertexProperties.Add(newProp);
}
}
await Events.OnNext(new SaveVertexCompletedEvent()
{
Command = new SaveVertexCommand()
{
VertexId = cmd.VertexId,
Props = cmd.Props
}
});
}
internal static void AssertGraphsEqual(string expected, string actual)
{
AssertGraphsEqual(JsonConvention.DeserializeObject <PropertyGraphModel>(expected), JsonConvention.DeserializeObject <PropertyGraphModel>(actual));
}
public async override Task Execute(SaveEdgeCommand cmd)
{
// is the relationship already there?
var edge = await UnitOfWork.Db.Edges.Where(
e => e.SourceVertexId == cmd.SourceVertexId && e.TargetVertexId == cmd.TargetVertexId &&
e.SchemaUri == cmd.SchemaUri &&
e.Deleted == null).FirstOrDefaultAsync();
var edgeExists = (edge != null);
if (!edgeExists)
{
// relationship not found - create edge
edge = new Entities.Edge()
{
Id = Guid.NewGuid(),
SourceVertexId = cmd.SourceVertexId,
TargetVertexId = cmd.TargetVertexId,
SchemaUri = cmd.SchemaUri,
Created = _clock.TimeStamp,
};
UnitOfWork.Db.Edges.Add(edge);
}
if (cmd.Props != null)
{
var edgeProps = await UnitOfWork.Db.EdgeProperties.Where(
p => p.EdgeId == edge.Id && p.Deleted == null)
.ToListAsync();
foreach (var propModel in cmd.Props)
{
var jsonValue = JsonConvention.SerializeObject(propModel.Value);
if (edgeExists)
{
// relationship found - find if the proeprty isn't already there
var prop = edgeProps.SingleOrDefault(p => p.SchemaUri == propModel.SchemaUri);
if (prop != null)
{
if (prop.JsonValue == jsonValue)
{
// nothing to update
continue;
}
else
{
// different value - close old property and continue
prop.Deleted = _clock.TimeStamp;
}
}
}
// if value is null do not add anything
if (propModel.Value == null)
{
continue;
}
// create property
var newProp = new EdgeProperty()
{
Id = Guid.NewGuid(),
EdgeId = edge.Id,
SchemaUri = propModel.SchemaUri,
Created = _clock.TimeStamp,
JsonValue = jsonValue
};
UnitOfWork.Db.EdgeProperties.Add(newProp);
// prevent inserting duplicate props
edgeProps.Add(newProp);
}
}
await Events.OnNext(new SaveEdgeCompletedEvent()
{
Command = cmd
});
}
public override async Task <List <DuplicateResult> > Execute(DuplicatesQuery query)
{
var graph = (await _queryService.Execute(new InternalGraphQuery()
{
NetworkId = query.NetworkId
}, this))
.Snapshot();
var settings = await _queryService.Execute(new NetworkSettingsQuery()
{
NetworkId = query.NetworkId
}, this);
var requiredProps = settings.Invitations.RequiredProps;
var duplicatesByRequiredProps =
graph.Vertices.Select(
v => new {
Key = string.Join("::", requiredProps.Select(prop => v.Props.ContainsKey(prop) ? JsonConvention.SerializeObject(v.Props[prop]) : "")),
Vertex = v
})
.GroupBy(g => g.Key)
.Where(g => g.Count(v => true) > 1)
.Select(g => new Duplicate()
{
Score = 1,
Key = g.Select(a => a.Vertex.Id).OrderBy(id => id).ToArray(),
Vertices = g.Select(a => a.Vertex)
});
var labelProp = settings.ProfileCard.LabelProp;
var duplicatesByLabel =
graph.Vertices.Select(
v => new {
Label = v.Props.ContainsKey(labelProp) ? v.Props[labelProp].ToString().ToLowerInvariant().Trim() : "",
Vertex = v
})
.GroupBy(g => g.Label)
.Where(g => g.Count(v => true) > 1)
.Select(g => new Duplicate()
{
Score = 0.5,
Key = g.Select(a => a.Vertex.Id).OrderBy(id => id).ToArray(),
Vertices = g.Select(a => a.Vertex)
});
var duplicates = duplicatesByRequiredProps.ToDictionary(d => d.Key, d => d, new ArrayEqualityComparer());
foreach (var duplicate in duplicatesByLabel)
{
if (!duplicates.ContainsKey(duplicate.Key))
{
duplicates[duplicate.Key] = duplicate;
}
}
var accounts = await
(from account in _repo.Db.Accounts
join user in _repo.Db.Users on account.ApplicationUserId equals user.Id
join vertex in _repo.Db.Vertices on account.VertexId equals vertex.Id
where vertex.NetworkId == query.NetworkId
group new { user.Email, account.InvitationDate } by vertex.Id into g
select new
{
VertexId = g.Key,
Accounts = g.ToList()
}
).ToDictionaryAsync(g => g.VertexId, g => g.Accounts.OrderBy(a => a.InvitationDate));
var result = new List <DuplicateResult>();
foreach (var duplicate in duplicates.Values.OrderByDescending(d => d.Score))
{
foreach (var vertex in duplicate.Vertices)
{
vertex.Props = vertex.Props.ToProfileCardProps(settings.ProfileCard);
if (accounts.ContainsKey(vertex.Id))
{
vertex.Props["Account email"] = accounts[vertex.Id].First().Email;
}
}
var firstAccountVertex = duplicate.Vertices.Select(v => new
{
Vertex = v,
InvitationDate =
accounts.ContainsKey(v.Id) ? accounts[v.Id].First().InvitationDate : DateTime.MaxValue
}).OrderBy(a => a.InvitationDate).First();
result.Add(new DuplicateResult()
{
Vertex = firstAccountVertex.Vertex,
Duplicates = duplicate.Vertices.Where(v => v != firstAccountVertex.Vertex).ToList()
});
}
return(result);
}
public Dictionary <Tuple <Guid, Guid, string>, ConcurrentEdgeModel> GenerateConcurrentEdgeModel(GraphSchemaModel schema, InternalGraphEdgesResult edges)
{
//
var uriNameDictionary = schema.EdgeSchema.ToDictionary(e => e.Uri, e => e.Name);
// source, target, edgeName, propName => timestamp
var propTimestamps = new Dictionary <Tuple <Guid, Guid, string, string>, DateTime>();
// edges
var edgesResult = new Dictionary <Tuple <Guid, Guid, string>, ConcurrentEdgeModel>();
foreach (var relationshipSchema in schema.EdgeSchema)
{
// możliwe jest wiele relacji do różnych węzłów (a każda może mieć wiele propsów)
Dictionary <Tuple <Guid, Guid>, InternalGraphEdgesResult.InternalEdgeModel> edgeBucket;
if (!edges.Edges.TryGetValue(relationshipSchema.Uri, out edgeBucket))
{
continue;
}
foreach (var edge in edgeBucket)
{
var edgeKey = new Tuple <Guid, Guid, string>(edge.Key.Item1, edge.Key.Item2, uriNameDictionary[relationshipSchema.Uri]);
// find model
ConcurrentEdgeModel edgeModel;
if (!edgesResult.TryGetValue(edgeKey, out edgeModel))
{
edgeModel = new ConcurrentEdgeModel()
{
Id = edge.Value.Id,
SourceVertexId = edge.Value.SourceId,
TargetVertexId = edge.Value.TargetId,
Name = relationshipSchema.Name,
Props = new ConcurrentDictionary <string, object>(StringComparer.OrdinalIgnoreCase)
};
edgesResult.Add(edgeKey, edgeModel);
}
if (relationshipSchema.PropsSchema != null)
{
foreach (var propSchema in relationshipSchema.PropsSchema)
{
if (!edge.Value.PropsJson.ContainsKey(propSchema.Uri))
{
continue;
}
if (edgeModel.Props.ContainsKey(propSchema.Name))
{
continue;
}
var prop = edge.Value.PropsJson[propSchema.Uri];
if (!edgeModel.Props.ContainsKey(propSchema.Name))
{
var value = JsonConvention.DeserializeObject(prop.JsonValue);
edgeModel.Props.TryAdd(propSchema.Name, value);
}
else
{
// check timestamp for update (newer props override older)
var timestampKey = new Tuple <Guid, Guid, string, string>(edgeModel.SourceVertexId,
edgeModel.TargetVertexId, edgeModel.Name, propSchema.Name);
var timestamp = propTimestamps[timestampKey];
if (timestamp < prop.TimeStamp)
{
var value = JsonConvention.DeserializeObject(prop.JsonValue);
edgeModel.Props.TryAdd(propSchema.Name, value);
}
}
}
}
}
}
return(edgesResult);
}
public Dictionary <Guid, ConcurrentVertexModel> GenerateConcurrentVertexModel(GraphSchemaModel schema, InternalGraphVerticesResult vertices)
{
var vertexIdPropNameTimeStamp = new Dictionary <Tuple <Guid, String>, DateTime>(new TupeGuidStringComparer());
var verticesResult = new Dictionary <Guid, ConcurrentVertexModel>();
var processedPropUris = new HashSet <string>();
foreach (var sectionSchema in schema.VertexSchema)
{
if (sectionSchema.PropsSchema != null)
{
foreach (var propSchema in sectionSchema.PropsSchema)
{
List <InternalGraphVerticesResult.InternalVertexPropModel> propsBucket;
if (!vertices.WithProps.TryGetValue(propSchema.Uri, out propsBucket))
{
continue;
}
processedPropUris.Add(propSchema.Uri);
foreach (var prop in propsBucket)
{
ConcurrentVertexModel vertex;
if (!verticesResult.TryGetValue(prop.VertexId, out vertex))
{
vertex = new ConcurrentVertexModel()
{
Id = prop.VertexId,
Props = new ConcurrentDictionary <string, object>(StringComparer.OrdinalIgnoreCase)
};
verticesResult.Add(prop.VertexId, vertex);
}
if (!vertex.Props.ContainsKey(propSchema.Name))
{
var value = JsonConvention.DeserializeObject(prop.JsonValue);
vertex.Props.TryAdd(propSchema.Name, value);
vertexIdPropNameTimeStamp.Add(new Tuple <Guid, string>(vertex.Id, propSchema.Name),
prop.TimeStamp);
}
else
{
// should we override the value?
DateTime lastTimeStamp =
vertexIdPropNameTimeStamp[new Tuple <Guid, string>(vertex.Id, propSchema.Name)];
if (lastTimeStamp < prop.TimeStamp)
{
var value = JsonConvention.DeserializeObject(prop.JsonValue);
vertex.Props[propSchema.Name] = value;
}
}
}
}
}
}
// handle props outside schema
var outsideSchema = vertices.WithProps.Where(v => !processedPropUris.Contains(v.Key));
foreach (var propsBucket in outsideSchema)
{
var name = propsBucket.Key.Split('/').Last();
foreach (var prop in propsBucket.Value)
{
ConcurrentVertexModel vertex;
if (!verticesResult.TryGetValue(prop.VertexId, out vertex))
{
vertex = new ConcurrentVertexModel()
{
Id = prop.VertexId,
Props = new ConcurrentDictionary <string, object>(StringComparer.OrdinalIgnoreCase)
};
verticesResult.Add(prop.VertexId, vertex);
}
if (!vertex.Props.ContainsKey(name))
{
var value = JsonConvention.DeserializeObject(prop.JsonValue);
vertex.Props.TryAdd(name, value);
vertexIdPropNameTimeStamp.Add(new Tuple <Guid, string>(vertex.Id, name),
prop.TimeStamp);
}
else
{
// should we override the value?
DateTime lastTimeStamp =
vertexIdPropNameTimeStamp[new Tuple <Guid, string>(vertex.Id, name)];
if (lastTimeStamp < prop.TimeStamp)
{
var value = JsonConvention.DeserializeObject(prop.JsonValue);
vertex.Props[name] = value;
}
}
}
}
// vertices witour props
foreach (var withoutProp in vertices.WithoutProps)
{
verticesResult.Add(withoutProp, new ConcurrentVertexModel()
{
Id = withoutProp,
Props = new ConcurrentDictionary <string, object>(StringComparer.OrdinalIgnoreCase)
});
}
return(verticesResult);
}