public void Traversal_should_travel_loops_once1()
{
using (var storage = new GraphStorage())
{
long id1, id2;
using (var tx = storage.WriteTransaction())
{
id1 = storage.AddVertex(tx, new byte[] { 1, 2, 3 });
id2 = storage.AddVertex(tx, new byte[] { 3, 2, 1 });
storage.AddEdge(tx, id1, id2);
storage.AddEdge(tx, id2, id1);
tx.Commit();
}
using (var tx = storage.ReadTransaction())
{
var results = storage.Traverse()
.Execute(id1);
results.Should()
.HaveCount(2)
.And
.ContainInOrder(id1, id2);
results = storage.Traverse()
.Execute(id2);
results.Should()
.HaveCount(2)
.And
.ContainInOrder(id2, id1);
}
}
}
/// <summary> Save the current app state as a project </summary>
public static void Save()
{
Project prj = new Project();
prj.data = DataStorage.Create();
prj.graphSettings = GraphStorage.Create();
string path = StandaloneFileBrowser.SaveFilePanel("Save your project", "", "", FileExtension);
if (path == "")
{
return;
}
string jsonString = JsonUtility.ToJson(prj);
try
{
File.WriteAllText(path, jsonString);
}
catch (Exception e)
{
string msg = "Error saving project to file " + path + "\n\n" + e.Message;
UIManager.I.ShowMessageDialog(msg);
return;
}
UIManager.I.ShowMessageDialog("Project Saved");
}
public unsafe void Simple_edge_read_write_without_data_should_work()
{
using (var storage = new GraphStorage())
{
long vertexId1, vertexId2, edgeId;
using (var tx = storage.WriteTransaction())
{
vertexId1 = storage.AddVertex(tx, new byte[] { 1, 2, 3 });
vertexId2 = storage.AddVertex(tx, new byte[] { 3, 2, 1 });
edgeId = storage.AddEdge(tx, vertexId1, vertexId2);
tx.Commit();
}
using (var tx = storage.ReadTransaction())
{
Assert.Empty(storage.ReadEdgeData(tx, edgeId));
int size;
var data = storage.ReadEdgeData(tx, edgeId, out size);
Assert.Equal(0, size);
//will return valid ptr, but the size of data chunk is zero
Assert.False(null == data);
}
}
}
public void Simple_edge_delete_should_work()
{
using (var storage = new GraphStorage())
{
long vertexId1, vertexId2, edgeId;
using (var tx = storage.WriteTransaction())
{
vertexId1 = storage.AddVertex(tx, new byte[] { 1, 2, 3 });
vertexId2 = storage.AddVertex(tx, new byte[] { 3, 2, 1 });
edgeId = storage.AddEdge(tx, vertexId1, vertexId2, new byte[] { 5, 6, 7, 8 });
tx.Commit();
}
using (var tx = storage.ReadTransaction())
{
var data = storage.ReadEdgeData(tx, edgeId);
Assert.NotNull(data);
}
using (var tx = storage.WriteTransaction())
{
storage.RemoveEdge(tx, edgeId);
tx.Commit();
}
using (var tx = storage.ReadTransaction())
{
var data = storage.ReadEdgeData(tx, edgeId);
Assert.Null(data);
}
}
}
public void Traversal_with_DFS_should_handle_loops_properly1()
{
using (var storage = new GraphStorage())
{
long id1, id2, id3;
using (var tx = storage.WriteTransaction())
{
id1 = storage.AddVertex(tx, new byte[] { 1, 2, 3 });
id2 = storage.AddVertex(tx, new byte[] { 3, 2, 1 });
id3 = storage.AddVertex(tx, new byte[] { 1, 1, 1 });
storage.AddEdge(tx, id1, id2);
storage.AddEdge(tx, id2, id3);
storage.AddEdge(tx, id3, id1);
tx.Commit();
}
using (var tx = storage.ReadTransaction())
{
var results = storage.Traverse()
.WithStrategy(Traversal.Strategy.Dfs)
.Execute(id1);
results.Should()
.HaveCount(3)
.And
.Contain(new[] { id1, id2, id3 });
}
}
}
public void Traversal_without_limits_should_traverse_all_edges1()
{
using (var storage = new GraphStorage())
{
long id1, id2;
using (var tx = storage.WriteTransaction())
{
id1 = storage.AddVertex(tx, new byte[] { 1, 2, 3 });
id2 = storage.AddVertex(tx, new byte[] { 3, 2, 1 });
storage.AddEdge(tx, id1, id2);
tx.Commit();
}
using (var tx = storage.ReadTransaction())
{
var results = storage.Traverse()
.Execute(id1);
results.Should()
.HaveCount(2)
.And
.Contain(id1).And.Contain(id2);
results = storage.Traverse()
.Execute(id2);
results.Should()
.HaveCount(1)
.And
.OnlyContain(r => r == id2);
}
}
}
public async Task BFS_FindOne_with_disconnected_root_should_return_null()
{
var graph = new GraphStorage("TestGraph", Env);
Node node2;
using (var tx = graph.NewTransaction(TransactionFlags.ReadWrite))
{
var node1 = graph.Commands.CreateNode(tx, JsonFromValue("test1"));
node2 = graph.Commands.CreateNode(tx, JsonFromValue("test2"));
var node3 = graph.Commands.CreateNode(tx, JsonFromValue("test3"));
graph.Commands.CreateEdgeBetween(tx, node3, node1);
graph.Commands.CreateEdgeBetween(tx, node3, node2);
//note: root node is selected by using a first node that was added
//since Voron.Graph is a directed graph - no node leads from the root node means nothing
//can be found
tx.Commit();
}
using (var tx = graph.NewTransaction(TransactionFlags.Read))
{
var bfs = new BreadthFirstSearch(graph, CancelTokenSource.Token);
var node = await bfs.FindOne(tx, data => ValueFromJson<string>(data).Equals("test2"));
node.Should().BeNull();
}
}
public async Task BFS_FindOne_with_connected_root_should_return_correct_results()
{
var graph = new GraphStorage("TestGraph", Env);
Node node2;
using (var tx = graph.NewTransaction(TransactionFlags.ReadWrite))
{
var node1 = graph.Commands.CreateNode(tx, JsonFromValue("test1"));
node2 = graph.Commands.CreateNode(tx, JsonFromValue("test2"));
var node3 = graph.Commands.CreateNode(tx, JsonFromValue("test3"));
graph.Commands.CreateEdgeBetween(tx, node3, node1);
graph.Commands.CreateEdgeBetween(tx, node3, node2);
graph.Commands.CreateEdgeBetween(tx, node2, node2);
graph.Commands.CreateEdgeBetween(tx, node1, node3);
tx.Commit();
}
using (var tx = graph.NewTransaction(TransactionFlags.Read))
{
var bfs = new BreadthFirstSearch(graph, CancelTokenSource.Token);
var node = await bfs.FindOne(tx, data => ValueFromJson<string>(data).Equals("test2"));
node.Should().NotBeNull();
node.Key.Should().Be(node2.Key);
}
}
public void Simple_shortest_path_with_equal_weights_and_alternative_path ()
{
var graph = new GraphStorage("TestGraph", Env);
Node node1, node2, node3,node4,node5;
using (var tx = graph.NewTransaction(TransactionFlags.ReadWrite))
{
node1 = graph.Commands.CreateNode(tx, JsonFromValue(1));
node2 = graph.Commands.CreateNode(tx, JsonFromValue(1));
node3 = graph.Commands.CreateNode(tx, JsonFromValue(1));
node4 = graph.Commands.CreateNode(tx, JsonFromValue(1));
node5 = graph.Commands.CreateNode(tx, JsonFromValue(1));
node1.ConnectWith(tx, node2, graph);
node1.ConnectWith(tx, node3, graph);
node2.ConnectWith(tx, node4, graph);
node4.ConnectWith(tx, node5, graph);
node5.ConnectWith(tx, node3, graph);
tx.Commit();
}
using (var tx = graph.NewTransaction(TransactionFlags.Read))
{
var shortestPathsData = GetAlgorithm(tx, graph, node1).Execute();
var shortestNodePath = shortestPathsData.GetShortestPathToNode(node3).ToList();
shortestNodePath.Should().ContainInOrder(node1.Key, node3.Key);
}
}
public void Put_edge_between_nodes_in_different_session_should_work()
{
var graph = new GraphStorage("TestGraph", Env);
Node node1, node2, node3;
using (var tx = graph.NewTransaction(TransactionFlags.ReadWrite))
{
node1 = graph.Commands.CreateNode(tx, JsonFromValue("test1"));
node2 = graph.Commands.CreateNode(tx, JsonFromValue("test2"));
node3 = graph.Commands.CreateNode(tx, JsonFromValue("test3"));
tx.Commit();
}
using (var tx = graph.NewTransaction(TransactionFlags.ReadWrite))
{
graph.Commands.CreateEdgeBetween(tx, node2, node3);
graph.Commands.CreateEdgeBetween(tx, node2, node1);
//looping edge also ok!
//adding multiple loops will overwrite each other
//TODO: add support for multiple edges that have the same keyFrom and keyTo
graph.Commands.CreateEdgeBetween(tx, node2, node2);
tx.Commit();
}
using (var tx = graph.NewTransaction(TransactionFlags.Read))
{
var adjacentNodes = graph.Queries.GetAdjacentOf(tx, node2);
adjacentNodes.Select(x => x.Key).Should().Contain(new []{ node1.Key, node2.Key, node3.Key});
}
}
internal AStarShortestPath(GraphStorage parent,
Func <long, long, TableValueReader, double> g,
Func <long, TableValueReader, double> h)
{
_parent = parent;
_g = g;
_h = h;
}
public unsafe void GetAdjacent_should_work()
{
using (var storage = new GraphStorage())
{
long vertexId1, vertexId2, vertexId3, vertexId4, vertexId5;
using (var tx = storage.WriteTransaction())
{
vertexId1 = storage.AddVertex(tx, new byte[] { 1, 2, 3 });
vertexId2 = storage.AddVertex(tx, new byte[] { 3, 2, 1 });
vertexId3 = storage.AddVertex(tx, new byte[] { 4, 5, 6 });
vertexId4 = storage.AddVertex(tx, new byte[] { 7 });
vertexId5 = storage.AddVertex(tx, new byte[] { 8 });
storage.AddEdge(tx, vertexId1, vertexId2);
storage.AddEdge(tx, vertexId1, vertexId3);
storage.AddEdge(tx, vertexId1, vertexId5);
storage.AddEdge(tx, vertexId4, vertexId2);
storage.AddEdge(tx, vertexId4, vertexId4);
storage.AddEdge(tx, vertexId4, vertexId1);
storage.AddEdge(tx, vertexId2, vertexId3);
tx.Commit();
}
using (var tx = storage.ReadTransaction())
{
var adjacentVertices = storage.GetAdjacent(tx, vertexId1).ToList();
adjacentVertices.Should()
.HaveCount(3)
.And.Contain(new[]
{
vertexId2,
vertexId3,
vertexId5
});
adjacentVertices = storage.GetAdjacent(tx, vertexId2).ToList();
adjacentVertices.Should()
.HaveCount(1)
.And.Contain(new[]
{
vertexId3
});
adjacentVertices = storage.GetAdjacent(tx, vertexId4).ToList();
adjacentVertices.Should()
.HaveCount(3)
.And.Contain(new[]
{
vertexId1,
vertexId2,
vertexId4
});
}
}
}
void Update()
{
if (Input.GetKeyDown("space"))
{
Debug.Log("pressed space");
GraphStorage storage = gameObject.AddComponent(typeof(GraphStorage)) as GraphStorage;
int startTime = Environment.TickCount;
mapgrid = storage.Load();
int endTime = Environment.TickCount;
Debug.Log(string.Format("Time to load: {0}", endTime - startTime));
Debug.Log(mapgrid);
startTime = Environment.TickCount;
Cell[,,] graph = mapgrid.createGraph();
endTime = Environment.TickCount;
Debug.Log(string.Format("Time to create grid: {0}", endTime - startTime));
Astar astar = new Astar(mapgrid);
float[] floatorigin = new float[] { origin[0], origin[1], origin[2] };
float[] floattarget = new float[] { target[0], target[1], target[2] };
startTime = Environment.TickCount;
var answer = astar.search(floatorigin, floattarget);
endTime = Environment.TickCount;
Debug.Log(string.Format("Time to search: {0}", endTime - startTime));
List <Vector3> vectorPath;
if (answer == null)
{
Debug.Log("ASTAR: No valid path");
vectorPath = null;
}
else
{
startTime = Environment.TickCount;
vectorPath = astar.PathToVectors();
endTime = Environment.TickCount;
Debug.Log(string.Format("Time to convert to vector: {0}", endTime - startTime));
}
foreach (Vector3 vec in vectorPath)
{
// Debug.Log(vec.ToString());
GameObject cube = GameObject.CreatePrimitive(PrimitiveType.Cube);
cube.transform.localScale = new Vector3(.5f, .5f, .5f);
cube.transform.position = vec;
cube.GetComponent <Renderer>().material.color = Color.green;
}
Debug.Log(string.Format("StraightLineRatio: {0}", astar.StraightLineRatio()));
}
}
public void Traversal_with_min_depth_should_traverse_relevant_edges1_with_DFS()
{
using (var storage = new GraphStorage())
{
long id1, id2, id3, id4, id5;
using (var tx = storage.WriteTransaction())
{
id1 = storage.AddVertex(tx, new byte[] { 1, 2, 3 });
id2 = storage.AddVertex(tx, new byte[] { 3, 2, 1 });
id3 = storage.AddVertex(tx, new byte[] { 3, 2, 1 });
id4 = storage.AddVertex(tx, new byte[] { 3, 2, 1 });
id5 = storage.AddVertex(tx, new byte[] { 3, 2, 1 });
storage.AddEdge(tx, id1, id2);
storage.AddEdge(tx, id2, id3);
storage.AddEdge(tx, id2, id4);
storage.AddEdge(tx, id4, id5);
tx.Commit();
}
using (var tx = storage.ReadTransaction())
{
var results = storage.Traverse()
.WithStrategy(Traversal.Strategy.Dfs)
.WithMinDepth(1)
.Execute(id1);
results.Should()
.HaveCount(4)
.And
.Contain(new[] { id2, id3, id4, id5 });
results = storage.Traverse()
.WithStrategy(Traversal.Strategy.Dfs)
.WithMinDepth(2)
.Execute(id1);
results.Should()
.HaveCount(3)
.And
.Contain(new[] { id3, id4, id5 });
results = storage.Traverse()
//zero-based depth,
//4 levels in total
.WithStrategy(Traversal.Strategy.Dfs)
.WithMinDepth(3)
.Execute(id1);
results.Should()
.HaveCount(1)
.And
.Contain(id5);
}
}
}
public DijkstraMultiDestinationShortestPath(Transaction tx, GraphStorage graphStorage, Node root, CancellationToken cancelToken)
{
_rootNode = root;
_shortestPathVisitor = new DijkstraMultiDestinationShortestPathVisitor(root,
(nodeFrom, nodeTo) => 0,
(traversalInfo, adjacentNode) => adjacentNode.EdgeTo.Weight + traversalInfo.TotalEdgeWeightUpToNow);
_bfs = new TraversalAlgorithm(tx, graphStorage, root, TraversalType.BFS, cancelToken)
{
Visitor = _shortestPathVisitor
};
}
// Start is called before the first frame update
void Start()
{
numSamples = numBoxes * numBoxes * numBoxes;
sample = 0;
int percent = numSamples / 100;
Debug.Log(percent);
int startTime = Environment.TickCount;
// bool[,,] collisionMask = new bool[(int)numBoxes, (int)numBoxes, (int)numBoxes];
MapGrid grid = new MapGrid();
float[] startpos = new float[] { startPosition[0], startPosition[1], startPosition[2] };
int[] initsize = new int[] { (int)numBoxes, (int)numBoxes, (int)numBoxes, };
grid.initialize(startpos, initsize, boxSize);
for (int x = 0; x < numBoxes; x++)
{
for (int y = 0; y < numBoxes; y++)
{
for (int z = 0; z < numBoxes; z++)
{
Collider[] hitColliders = Physics.OverlapBox(new Vector3(x * boxSize + startPosition[0], y * boxSize + startPosition[1], z * boxSize + startPosition[2]), new Vector3(objectRadius, objectRadius, objectRadius), Quaternion.identity, m_LayerMask);
if (hitColliders.Length > 0)
{
GameObject cube = GameObject.CreatePrimitive(PrimitiveType.Cube);
cube.transform.localScale = new Vector3(boxSize, boxSize, boxSize);
cube.transform.position = new Vector3(x * boxSize + startPosition[0], y * boxSize + startPosition[1], z * boxSize + startPosition[2]);
cube.GetComponent <Renderer>().material.color = Color.red;
grid.setMaskItem(x, y, z, false);
}
else
{
grid.setMaskItem(x, y, z, true);
}
sample++;
}
}
}
int endTime = Environment.TickCount;
Debug.Log(endTime - startTime);
GraphStorage storage = gameObject.AddComponent(typeof(GraphStorage)) as GraphStorage;
storage.Save(grid);
Debug.Log(Application.persistentDataPath);
}
public void Traversal_without_edges_should_return_first_vertex()
{
using (var storage = new GraphStorage())
{
long id1, id2;
using (var tx = storage.WriteTransaction())
{
id1 = storage.AddVertex(tx, new byte[] { 1, 2, 3 });
id2 = storage.AddVertex(tx, new byte[] { 3, 2, 1 });
tx.Commit();
}
//test both dfs and bfs
using (var tx = storage.ReadTransaction())
{
var results = storage.Traverse()
.WithStrategy(Traversal.Strategy.Bfs)
.Execute(id1);
results.Should()
.HaveCount(1)
.And
.OnlyContain(r => r == id1);
results = storage.Traverse()
.Execute(id2);
results.Should()
.HaveCount(1)
.And
.OnlyContain(r => r == id2);
results = storage.Traverse()
.WithStrategy(Traversal.Strategy.Dfs)
.Execute(id1);
results.Should()
.HaveCount(1)
.And
.OnlyContain(r => r == id1);
results = storage.Traverse()
.Execute(id2);
results.Should()
.HaveCount(1)
.And
.OnlyContain(r => r == id2);
}
}
}
protected BaseSingleDestinationShortestPath(Transaction tx,
GraphStorage graphStorage,
Node root,
Node targetNode,
SingleDestinationShortestPathVisitor shortestPathVisitor,
TraversalAlgorithm traversal,
CancellationToken cancelToken)
{
_rootNode = root;
_targetNode = targetNode;
_shortestPathVisitor = shortestPathVisitor;
_traversal = traversal;
_traversal.Visitor = shortestPathVisitor;
}
public EdmondsKarpMaximumFlow(Transaction tx,
GraphStorage graphStorage,
Node sourceNode,
Node targetNode,
Func<Edge, long> capacity,
CancellationToken? cancelToken = null)
: base(capacity)
{
_sourceNode = sourceNode;
_targetNode = targetNode;
_storage = graphStorage;
_cancelToken = cancelToken;
_flow = new Dictionary<Tuple<long, long>, long>();
_tx = tx;
}
public void Traversal_with_DFS_and_with_vertex_visitor_should_visit_vertices_once()
{
using (var storage = new GraphStorage())
{
long id1, id2, id3, id4;
using (var tx = storage.WriteTransaction())
{
id1 = storage.AddVertex(tx, new byte[] { 1, 2, 3 });
id2 = storage.AddVertex(tx, new byte[] { 3, 2, 1 });
id3 = storage.AddVertex(tx, new byte[] { 1, 1, 1 });
id4 = storage.AddVertex(tx, new byte[] { 1, 0, 1 });
//create well connected graph
storage.AddEdge(tx, id1, id2);
storage.AddEdge(tx, id2, id3);
storage.AddEdge(tx, id3, id1);
storage.AddEdge(tx, id2, id4);
storage.AddEdge(tx, id1, id4);
storage.AddEdge(tx, id3, id4);
storage.AddEdge(tx, id4, id3);
tx.Commit();
}
using (var tx = storage.ReadTransaction())
{
var fetchedData = new List <byte[]>();
var expectedData = new[]
{
new byte[] { 1, 2, 3 },
new byte[] { 3, 2, 1 },
new byte[] { 1, 1, 1 },
new byte[] { 1, 0, 1 }
};
var results = storage.Traverse()
.WithStrategy(Traversal.Strategy.Dfs)
.Execute(id1,
vertexVisitor: reader =>
{
var data = reader.ReadData((int)VertexTableFields.Data);
fetchedData.Add(data);
});
//DFS has reverse traversal order
Assert.Equal(expectedData.Reverse(), fetchedData);
}
}
}
public void Construct()
{
_graph = new GraphStorage<string, Variable>();
foreach (Variable variable in _storage.Variables)
{
_graph.AddNode(VariableKey(variable), variable);
}
foreach (Connection connection in _storage.Connections.Where(conn => conn.Type == ConnectionType.Data))
{
string nodeKey = GetConnectionNodeKey(connection.Source, connection.FBType);
string connectedNodeKey = GetConnectionNodeKey(connection.Destination, connection.FBType);
_graph.AddConnection(nodeKey, connectedNodeKey, k => k == connectedNodeKey);
_graph.AddConnection(connectedNodeKey, nodeKey, k => k == nodeKey);
}
}
public static GraphStorage SetGraphStorage(BlockGraph graph, int walletIdentifier, GraphStateEnum stateGraph)
{
string hash = GraphCompression.GetUniqueGraphHash(walletIdentifier, graph.CompressedRaw);
var storage = new GraphStorage()
{
StoredHash = hash,
CompressedBytes = graph.CompressedRaw,
WalletIdentifierOwner = walletIdentifier,
StateGraph = stateGraph
};
var conn = muxer.GetDatabase(0);
conn.StringSet(string.Format("graphs/{0}", hash), JsonConvert.SerializeObject(storage));
return(storage);
}
public async Task BFS_FindOne_with_only_root_node_in_graph_returns_correct_results()
{
var graph = new GraphStorage("TestGraph", Env);
using (var tx = graph.NewTransaction(TransactionFlags.ReadWrite))
{
graph.Commands.CreateNode(tx, JsonFromValue("test1"));
tx.Commit();
}
using (var tx = graph.NewTransaction(TransactionFlags.Read))
{
var bfs = new BreadthFirstSearch(graph, CancelTokenSource.Token);
var node = await bfs.FindOne(tx, data => ValueFromJson<string>(data).Equals("test1"));
node.Should().NotBeNull();
}
}
public DijkstraShortestPath(Transaction tx,
GraphStorage graphStorage,
Node root,
Node targetNode,
CancellationToken cancelToken)
: base(tx,graphStorage,root,targetNode,
new SingleDestinationShortestPathVisitor(root, targetNode,
(nodeFrom, nodeTo) => 0,
(traversalInfo, adjacentNode) => adjacentNode.EdgeTo.Weight + traversalInfo.TotalEdgeWeightUpToNow),
new TraversalAlgorithm(tx,
graphStorage,
root,
TraversalType.BFS,
cancelToken),
cancelToken
)
{
_shortestPathVisitor.IsProcessingQueueEmpty = () => _traversal.ProcessingQueueCount == 0;
}
public AStarShortestPath(Transaction tx,
GraphStorage graphStorage,
Node root,
Node targetNode,
Func<Node,Node,double> heuristic,
CancellationToken cancelToken)
:base(tx,graphStorage,root,targetNode,
new AStarShortestPathVisitor(root, targetNode,
heuristic,
(traversalInfo, adjacentNode) => adjacentNode.EdgeTo.Weight + traversalInfo.TotalEdgeWeightUpToNow),
new TraversalAlgorithm(tx,
graphStorage,
root,
new PriorityQueueTraversalStore(new TraversalNodeInfoComparer(root, heuristic)),
cancelToken),
cancelToken)
{
_shortestPathVisitor.IsProcessingQueueEmpty = () => _traversal.ProcessingQueueCount == 0;
}
public void Initialization_should_work()
{
//create in-memory
using (var storage = new GraphStorage())
{ }
//create persisted
var tempPath = Path.GetTempPath() + Path.DirectorySeparatorChar + Guid.NewGuid();
try
{
using (var storage = new GraphStorage(tempPath))
{
}
}
finally
{
Directory.Delete(tempPath, true);
}
}
public void Simple_vertex_delete_should_work()
{
using (var storage = new GraphStorage())
{
long id;
using (var tx = storage.WriteTransaction())
{
id = storage.AddVertex(tx, new byte[] { 1, 2, 3 });
tx.Commit();
}
using (var tx = storage.WriteTransaction())
{
storage.RemoveVertex(tx, id);
tx.Commit();
}
using (var tx = storage.ReadTransaction())
Assert.Null(storage.ReadVertexData(tx, id));
}
}
public void Traversal_with_DFS_and_with_edges_visitor_should_visit_vertices_once()
{
using (var storage = new GraphStorage())
{
long id1, id2, id3;
using (var tx = storage.WriteTransaction())
{
id1 = storage.AddVertex(tx, new byte[] { 1, 2, 3 });
id2 = storage.AddVertex(tx, new byte[] { 3, 2, 1 });
id3 = storage.AddVertex(tx, new byte[] { 1, 1, 1 });
storage.AddEdge(tx, id1, id2, new byte[] { 12 });
storage.AddEdge(tx, id2, id3, new byte[] { 23 });
storage.AddEdge(tx, id3, id1, new byte[] { 31 });
tx.Commit();
}
using (var tx = storage.ReadTransaction())
{
var fetchedData = new List <byte[]>();
var expectedData = new[]
{
new byte[] { 12 },
new byte[] { 23 },
new byte[] { 31 }
};
var results = storage.Traverse()
.WithStrategy(Traversal.Strategy.Dfs)
.Execute(id1,
edgeVisitor: reader =>
{
var data = reader.ReadData((int)EdgeTableFields.Data);
fetchedData.Add(data);
});
//DFS visits edges in the same manner as BFS, but vertices it visits in reverse
Assert.Equal(expectedData, fetchedData);
}
}
}
public void Traversal_with_max_results_should_return_proper_number_of_results()
{
using (var storage = new GraphStorage())
{
long id1, id2, id3;
using (var tx = storage.WriteTransaction())
{
id1 = storage.AddVertex(tx, new byte[] { 1, 2, 3 });
id2 = storage.AddVertex(tx, new byte[] { 3, 2, 1 });
id3 = storage.AddVertex(tx, new byte[] { 1, 1, 1 });
storage.AddEdge(tx, id1, id2);
storage.AddEdge(tx, id2, id3);
storage.AddEdge(tx, id3, id1);
tx.Commit();
}
using (var tx = storage.ReadTransaction())
{
var results = storage.Traverse()
.WithMaxResults(2)
.Execute(id1);
results.Should()
.HaveCount(2)
.And
.Contain(new[] { id1, id2 });
results = storage.Traverse()
.WithMaxResults(2)
.Execute(id2);
results.Should()
.HaveCount(2)
.And
.Contain(new[] { id2, id3 });
}
}
}
public void Simple_vertex_read_write_should_work()
{
using (var storage = new GraphStorage())
{
long id1, id2;
using (var tx = storage.WriteTransaction())
{
id1 = storage.AddVertex(tx, new byte[] { 1, 2, 3 });
id2 = storage.AddVertex(tx, new byte[] { 3, 2, 1 });
tx.Commit();
}
using (var tx = storage.ReadTransaction())
{
var data1 = storage.ReadVertexData(tx, id1);
Assert.NotNull(data1);
Assert.Equal(new byte[] { 1, 2, 3 }, data1);
var data2 = storage.ReadVertexData(tx, id2);
Assert.NotNull(data2);
Assert.Equal(new byte[] { 3, 2, 1 }, data2);
}
}
}
public void Traversal_with_max_results_lower_than_actual_results_should_have_no_effect()
{
using (var storage = new GraphStorage())
{
long id1, id2, id3;
using (var tx = storage.WriteTransaction())
{
id1 = storage.AddVertex(tx, new byte[] { 1, 2, 3 });
id2 = storage.AddVertex(tx, new byte[] { 3, 2, 1 });
id3 = storage.AddVertex(tx, new byte[] { 1, 1, 1 });
storage.AddEdge(tx, id1, id2);
storage.AddEdge(tx, id2, id3);
storage.AddEdge(tx, id3, id1);
tx.Commit();
}
using (var tx = storage.ReadTransaction())
{
var results = storage.Traverse()
.WithMaxResults(50)
.Execute(id1);
results.Should()
.HaveCount(3)
.And
.ContainInOrder(id1, id2, id3);
results = storage.Traverse()
.Execute(id2);
results.Should()
.HaveCount(3)
.And
.ContainInOrder(id2, id3, id1);
}
}
}
private long Create2DepthHierarchy(GraphStorage graph)
{
long centerNodeKey = 0;
using (var tx = graph.NewTransaction(TransactionFlags.ReadWrite))
{
var centerNode = graph.Commands.CreateNode(tx, JsonFromValue("centerNode"));
centerNodeKey = centerNode.Key;
for (var i = 1; i < 6; i++)
{
var curChild = graph.Commands.CreateNode(tx,JsonFromValue("childNode" + i.ToString()));
graph.Commands.CreateEdgeBetween(tx, centerNode, curChild, JsonFromValue(i.ToString()));
for (var j = 1; j < 6; j++)
{
var curGrandChild = graph.Commands.CreateNode(tx, JsonFromValue(string.Concat("grandchild", i.ToString(), "child", i.ToString())));
graph.Commands.CreateEdgeBetween(tx, curChild, curGrandChild,JsonFromValue((i * 10 + j).ToString()));
}
}
tx.Commit();
}
return centerNodeKey;
}
public BreadthFirstSearch(GraphStorage graphStorage, CancellationToken cancelToken)
: base(cancelToken)
{
_graphStorage = graphStorage;
}
public void Edge_predicate_should_filter_edge_types_correctly()
{
var graph = new GraphStorage("TestGraph", Env);
Node node1, node2, node3, node4, node5;
using (var tx = graph.NewTransaction(TransactionFlags.ReadWrite))
{
node1 = graph.Commands.CreateNode(tx, JsonFromValue("test1"));
node2 = graph.Commands.CreateNode(tx, JsonFromValue("test2"));
node3 = graph.Commands.CreateNode(tx, JsonFromValue("test3"));
node4 = graph.Commands.CreateNode(tx, JsonFromValue("test4"));
node5 = graph.Commands.CreateNode(tx, JsonFromValue("test5"));
tx.Commit();
}
using (var tx = graph.NewTransaction(TransactionFlags.ReadWrite))
{
graph.Commands.CreateEdgeBetween(tx, node1, node2,type: 1);
graph.Commands.CreateEdgeBetween(tx, node1, node3, type: 2);
graph.Commands.CreateEdgeBetween(tx, node1, node4, type: 3);
graph.Commands.CreateEdgeBetween(tx, node1, node5, type: 2);
tx.Commit();
}
using (var tx = graph.NewTransaction(TransactionFlags.Read))
{
var adjacentNodes = graph.Queries.GetAdjacentOf(tx, node1, type => type == 2);
adjacentNodes.Select(x => x.Node.Key).Should().Contain(new[] { node3.Key, node5.Key });
}
}
public void Between_two_equivalent_paths_first_created_should_be_chosen()
{
var graph = new GraphStorage("TestGraph", Env);
Node node1, node2, node3, node4;
using (var tx = graph.NewTransaction(TransactionFlags.ReadWrite))
{
node1 = graph.Commands.CreateNode(tx, JsonFromValue(1));
node2 = graph.Commands.CreateNode(tx, JsonFromValue(2));
node3 = graph.Commands.CreateNode(tx, JsonFromValue(3));
node4 = graph.Commands.CreateNode(tx, JsonFromValue(4));
node1.ConnectWith(tx, node2, graph, 2);
node2.ConnectWith(tx, node4, graph, 1);
node1.ConnectWith(tx, node3, graph, 1);
node3.ConnectWith(tx, node4, graph, 2);
tx.Commit();
}
using (var tx = graph.NewTransaction(TransactionFlags.Read))
{
var shortestPathsData = GetAlgorithm(tx, graph, node1).Execute();
var shortestNodePath = shortestPathsData.GetShortestPathToNode(node4).ToList();
shortestNodePath.Should().ContainInOrder(node1.Key, node2.Key, node4.Key);
}
}
public void Simple_shortest_path_with_varying_edge_weight_should_work()
{
var graph = new GraphStorage("TestGraph", Env);
Node node1, node2, node3;
using (var tx = graph.NewTransaction(TransactionFlags.ReadWrite))
{
node1 = graph.Commands.CreateNode(tx, JsonFromValue(1));
node2 = graph.Commands.CreateNode(tx, JsonFromValue(2));
node3 = graph.Commands.CreateNode(tx, JsonFromValue(3));
node1.ConnectWith(tx, node2, graph, 2);
node1.ConnectWith(tx, node3, graph, 10);
node2.ConnectWith(tx, node3, graph, 2);
tx.Commit();
}
using (var tx = graph.NewTransaction(TransactionFlags.Read))
{
var shortestPathsData = GetAlgorithm(tx, graph, node1).Execute();
var shortestNodePath = shortestPathsData.GetShortestPathToNode(node3).ToList();
shortestNodePath.Should().ContainInOrder(node1.Key, node2.Key, node3.Key);
}
}
public void Read_and_writing_system_metadata_should_work()
{
var graph = new GraphStorage("TestGraph", Env);
using (var tx = graph.NewTransaction(TransactionFlags.ReadWrite))
{
graph.Commands.PutToSystemMetadata(tx, "Foo", "Bar");
graph.Commands.PutToSystemMetadata(tx, "FooNum", 123);
graph.Commands.PutToSystemMetadata(tx, "FooBoolean", false);
tx.Commit();
}
using (var tx = graph.NewTransaction(TransactionFlags.Read))
{
var bar = graph.Queries.GetFromSystemMetadata<string>(tx, "Foo");
var fooNum = graph.Queries.GetFromSystemMetadata<int>(tx, "FooNum");
var fooBoolean = graph.Queries.GetFromSystemMetadata<bool>(tx, "FooBoolean");
Assert.AreEqual("Bar", bar);
Assert.AreEqual(123, fooNum);
Assert.AreEqual(false, fooBoolean);
}
}
public static Task<List<Edge>> GetEdges(this Node node, Transaction tx, GraphStorage storage, CancellationToken token)
{
return storage.AdminQueries.GetEdgesOfNode(tx, node, token);
}
public static Edge ConnectWith(this Node node,Transaction tx,Node otherNode, GraphStorage storage,short weight = 1)
{
return storage.Commands.CreateEdgeBetween(tx,node,otherNode,edgeWeight:weight);
}
public void Can_Iterate_On_Nearest_Nodes()
{
var graph = new GraphStorage("TestGraph", Env);
long centerNodeKey = 0;
centerNodeKey = Create2DepthHierarchy(graph);
using (var tx = graph.NewTransaction(TransactionFlags.Read))
{
var centerNode = graph.Queries.LoadNode(tx, centerNodeKey);
var nodeValues = new Dictionary<string, string>();
string curEdgeVal;
string curNodeVal;
foreach (var curNode in graph.Queries.GetAdjacentOf(tx, centerNode))
{
var curEdge = graph.Queries.GetEdgesBetween(tx, centerNode, curNode).FirstOrDefault();
Assert.IsNotNull(curEdge);
curEdgeVal = curEdge.Data.Value<string>("Value");
curNodeVal = curNode.Data.Value<string>("Value");
nodeValues.Add(curNodeVal, curEdgeVal);
}
nodeValues.Values.Should().NotContain("grandchild");
Assert.AreEqual(nodeValues.Count, 5);
}
}
public void No_path_between_nodes_should_result_in_null()
{
var graph = new GraphStorage("TestGraph", Env);
Node node1, node2;
using (var tx = graph.NewTransaction(TransactionFlags.ReadWrite))
{
node1 = graph.Commands.CreateNode(tx, JsonFromValue(1));
node2 = graph.Commands.CreateNode(tx, JsonFromValue(2));
tx.Commit();
}
using (var tx = graph.NewTransaction(TransactionFlags.Read))
{
var shortestPathsData = GetAlgorithm(tx, graph, node1).Execute();
var shortestNodePath = shortestPathsData.GetShortestPathToNode(node2);
shortestNodePath.Should().BeNull();
}
}
public void Get_edges_between_two_nonexisting_nodes_should_return_empty_collection()
{
var graph = new GraphStorage("TestGraph", Env);
using (var tx = graph.NewTransaction(TransactionFlags.ReadWrite))
{
var node1 = new Node(-1,JsonFromValue("node1"));
var node2 = new Node(-2,JsonFromValue("node2"));
var edgesList = graph.Queries.GetEdgesBetween(tx, node1, node2);
edgesList.Should().BeEmpty();
}
}
protected abstract IMultiDestinationShortestPath GetAlgorithm(Transaction tx, GraphStorage graph, Node rootNode);
public async Task BFS_FindMany_with_connected_root_returns_correct_results()
{
var graph = new GraphStorage("TestGraph", Env);
using (var tx = graph.NewTransaction(TransactionFlags.ReadWrite))
{
var node1 = graph.Commands.CreateNode(tx, JsonFromValue("test1"));
var node2 = graph.Commands.CreateNode(tx, JsonFromValue("test2"));
var node3 = graph.Commands.CreateNode(tx, JsonFromValue("test3"));
var node4 = graph.Commands.CreateNode(tx, JsonFromValue("test4"));
graph.Commands.CreateEdgeBetween(tx, node3, node1);
graph.Commands.CreateEdgeBetween(tx, node3, node2);
graph.Commands.CreateEdgeBetween(tx, node3, node4);
graph.Commands.CreateEdgeBetween(tx, node2, node2);
graph.Commands.CreateEdgeBetween(tx, node2, node4);
graph.Commands.CreateEdgeBetween(tx, node1, node3);
tx.Commit();
}
using (var tx = graph.NewTransaction(TransactionFlags.Read))
{
var bfs = new BreadthFirstSearch(graph, CancelTokenSource.Token);
var nodes = await bfs.FindMany(tx, data => ValueFromJson<string>(data).Contains("2") ||
ValueFromJson<string>(data).Contains("4"));
nodes.Select(x => ValueFromJson<string>(x.Data)).Should().Contain("test2", "test4");
}
}
public void Cheap_long_path_over_short_expensive_path_should_be_chosen()
{
var graph = new GraphStorage("TestGraph", Env);
Node node1, node2, node3, node4;
using (var tx = graph.NewTransaction(TransactionFlags.ReadWrite))
{
node1 = graph.Commands.CreateNode(tx, JsonFromValue(1));
node2 = graph.Commands.CreateNode(tx, JsonFromValue(2));
node3 = graph.Commands.CreateNode(tx, JsonFromValue(3));
node4 = graph.Commands.CreateNode(tx, JsonFromValue(4));
node1.ConnectWith(tx, node2, graph, 1);
node2.ConnectWith(tx, node3, graph, 1);
node3.ConnectWith(tx, node4, graph, 1);
node1.ConnectWith(tx, node4, graph, 10);
tx.Commit();
}
using (var tx = graph.NewTransaction(TransactionFlags.Read))
{
var shortestPathsData = GetAlgorithm(tx, graph, node1).Execute();
var shortestNodePath = shortestPathsData.GetShortestPathToNode(node4);
shortestNodePath.Should().ContainInOrder(node1.Key, node2.Key, node3.Key, node4.Key);
}
}
public async Task Can_Avoid_Duplicate_Nodes_InParallel_Adds()
{
var graph = new GraphStorage("TestGraph",Env);
Parallel.For(0, 100, i =>
{
using (var tx = graph.NewTransaction(TransactionFlags.ReadWrite))
{
graph.Commands.CreateNode(tx, JsonFromValue("newNode" + i));
tx.Commit();
}
});
var fetchedKeys = new List<long>();
using (var tx = graph.NewTransaction(TransactionFlags.Read))
{
var nodesList = await graph.AdminQueries.GetAllNodes(tx, CancelTokenSource.Token);
nodesList.Select(node => node.Key).Should().OnlyHaveUniqueItems();
}
}
public void Get_edges_between_existing_and_nonexisting_node_should_return_empty_collection()
{
var graph = new GraphStorage("TestGraph", Env);
long node1Id = 0;
using (var tx = graph.NewTransaction(TransactionFlags.ReadWrite))
{
var node1 = graph.Commands.CreateNode(tx, JsonFromValue("node1"));
Assert.IsNotNull(node1);
node1Id = node1.Key;
tx.Commit();
}
using (var tx = graph.NewTransaction(TransactionFlags.ReadWrite))
{
Node node1 = graph.Queries.LoadNode(tx, node1Id);
Node node2 = new Node(-2, JsonFromValue("node2"));
var edgesList = graph.Queries.GetEdgesBetween(tx, node1, node2);
edgesList.Should().BeEmpty();
}
}
protected override Algorithms.ShortestPath.ISingleDestinationShortestPath GetAlgorithm(Transaction tx, GraphStorage graph, Node rootNode, Node targetNode)
{
return new DijkstraShortestPath(tx, graph, rootNode, targetNode, cancelTokenSource.Token);
}
public void Load_nonexisting_node_should_return_null() {
var graph = new GraphStorage("TestGraph", Env);
using (var tx = graph.NewTransaction(TransactionFlags.ReadWrite))
{
var illegalNode = graph.Commands.CreateNode(tx,JsonFromValue("onlyNode"));
illegalNode.Should().NotBeNull();
}
using (var tx = graph.NewTransaction(TransactionFlags.Read)) {
var noneExistingNode = graph.Queries.LoadNode(tx, 1);
noneExistingNode.Should().BeNull();
}
}
Project()
{
data = null;
graphSettings = null;
name = DateTime.Now.ToString();
}
