/// <summary>
/// Calculates all routes between all sources and all targets.
/// </summary>
/// <returns></returns>
public sealed override Result <EdgePath <T>[][]> TryCalculateRaw <T>(IProfileInstance profileInstance, WeightHandler <T> weightHandler, RouterPoint[] sources, RouterPoint[] targets,
RoutingSettings <T> settings)
{
try
{
if (!_db.Supports(profileInstance.Profile))
{
return(new Result <EdgePath <T>[][]>("Routing profile is not supported.", (message) =>
{
return new Exception(message);
}));
}
var maxSearch = weightHandler.Infinite;
if (settings != null)
{
if (!settings.TryGetMaxSearch(profileInstance.Profile.FullName, out maxSearch))
{
maxSearch = weightHandler.Infinite;
}
}
ContractedDb contracted;
EdgePath <T>[][] paths = null;
bool useContracted = false;
if (_db.TryGetContracted(profileInstance.Profile, out contracted))
{ // contracted calculation.
useContracted = true;
if (_db.HasComplexRestrictions(profileInstance.Profile) && !contracted.HasEdgeBasedGraph)
{ // there is no edge-based graph for this profile but the db has complex restrictions, don't use the contracted graph.
Logging.Logger.Log("Router", Logging.TraceEventType.Warning,
"There is a vertex-based contracted graph but also complex restrictions. Not using the contracted graph, add an edge-based contracted graph.");
useContracted = false;
}
if (!weightHandler.CanUse(contracted))
{ // there is a contracted graph but it is not equipped to handle this weight-type.
Logging.Logger.Log("Router", Logging.TraceEventType.Warning,
"There is a contracted graph but it's not built for the given weight calculations, using the default but slow implementation.");
useContracted = false;
}
}
if (useContracted)
{
if (!contracted.HasEdgeBasedGraph)
{ // use node-based routing.
var algorithm = new Itinero.Algorithms.Contracted.ManyToManyBidirectionalDykstra <T>(_db, profileInstance.Profile, weightHandler,
sources, targets, maxSearch);
algorithm.Run();
if (!algorithm.HasSucceeded)
{
return(new Result <EdgePath <T>[][]>(algorithm.ErrorMessage, (message) =>
{
return new RouteNotFoundException(message);
}));
}
// build all routes.
paths = new EdgePath <T> [sources.Length][];
for (var s = 0; s < sources.Length; s++)
{
paths[s] = new EdgePath <T> [targets.Length];
for (var t = 0; t < targets.Length; t++)
{
paths[s][t] = algorithm.GetPath(s, t);
}
}
}
else
{ // use edge-based routing.
var algorithm = new Itinero.Algorithms.Contracted.EdgeBased.ManyToManyBidirectionalDykstra <T>(_db, profileInstance.Profile, weightHandler,
sources, targets, maxSearch);
algorithm.Run();
if (!algorithm.HasSucceeded)
{
return(new Result <EdgePath <T>[][]>(algorithm.ErrorMessage, (message) =>
{
return new RouteNotFoundException(message);
}));
}
// build all routes.
paths = new EdgePath <T> [sources.Length][];
for (var s = 0; s < sources.Length; s++)
{
paths[s] = new EdgePath <T> [targets.Length];
for (var t = 0; t < targets.Length; t++)
{
paths[s][t] = algorithm.GetPath(s, t);
}
}
}
}
if (paths == null)
{
// use non-contracted calculation.
var algorithm = new Itinero.Algorithms.Default.ManyToMany <T>(_db, weightHandler, sources, targets, maxSearch);
algorithm.Run();
if (!algorithm.HasSucceeded)
{
return(new Result <EdgePath <T>[][]>(algorithm.ErrorMessage, (message) =>
{
return new RouteNotFoundException(message);
}));
}
// build all routes.
paths = new EdgePath <T> [sources.Length][];
for (var s = 0; s < sources.Length; s++)
{
paths[s] = new EdgePath <T> [targets.Length];
for (var t = 0; t < targets.Length; t++)
{
paths[s][t] = algorithm.GetPath(s, t);
}
}
}
return(new Result <EdgePath <T>[][]>(paths));
}
catch (Exception ex)
{
return(new Result <EdgePath <T>[][]>(ex.Message, (m) => ex));
}
}
/// <summary>
/// Calculates all routes between all sources and all targets.
/// </summary>
/// <returns></returns>
public sealed override Result <T[][]> TryCalculateWeight <T>(Profile profile, WeightHandler <T> weightHandler, RouterPoint[] sources, RouterPoint[] targets,
ISet <int> invalidSources, ISet <int> invalidTargets, RoutingSettings <T> settings)
{
if (!_db.Supports(profile))
{
return(new Result <T[][]>("Routing profile is not supported.", (message) =>
{
return new Exception(message);
}));
}
var maxSearch = weightHandler.Infinite;
if (settings != null)
{
if (!settings.TryGetMaxSearch(profile.Name, out maxSearch))
{
maxSearch = weightHandler.Infinite;
}
}
ContractedDb contracted;
T[][] weights = null;
bool useContracted = false;
if (_db.TryGetContracted(profile, out contracted))
{ // contracted calculation.
useContracted = true;
if (_db.HasComplexRestrictions(profile) && !contracted.HasEdgeBasedGraph)
{ // there is no edge-based graph for this profile but the db has complex restrictions, don't use the contracted graph.
Logging.Logger.Log("Router", Logging.TraceEventType.Warning,
"There is a vertex-based contracted graph but also complex restrictions. Not using the contracted graph, add an edge-based contracted graph.");
useContracted = false;
}
if (!weightHandler.CanUse(contracted))
{ // there is a contracted graph but it is not equipped to handle this weight-type.
Logging.Logger.Log("Router", Logging.TraceEventType.Warning,
"There is a contracted graph but it's not built for the given weight calculations, using the default but slow implementation.");
useContracted = false;
}
}
if (useContracted)
{
if (!contracted.HasEdgeBasedGraph)
{ // use node-based routing.
var algorithm = new Itinero.Algorithms.Contracted.ManyToManyBidirectionalDykstra <T>(_db, profile, weightHandler,
sources, targets, maxSearch);
algorithm.Run();
if (!algorithm.HasSucceeded)
{
return(new Result <T[][]>(algorithm.ErrorMessage, (message) =>
{
return new RouteNotFoundException(message);
}));
}
weights = algorithm.Weights;
}
else
{ // use edge-based routing.
var algorithm = new Itinero.Algorithms.Contracted.EdgeBased.ManyToManyBidirectionalDykstra <T>(_db, profile, weightHandler,
sources, targets, maxSearch);
algorithm.Run();
if (!algorithm.HasSucceeded)
{
return(new Result <T[][]>(algorithm.ErrorMessage, (message) =>
{
return new RouteNotFoundException(message);
}));
}
weights = algorithm.Weights;
}
}
else
{ // use regular graph.
if (_db.HasComplexRestrictions(profile))
{
var algorithm = new Itinero.Algorithms.Default.EdgeBased.ManyToMany <T>(this, weightHandler, _db.GetGetRestrictions(profile, true), sources, targets, maxSearch);
algorithm.Run();
if (!algorithm.HasSucceeded)
{
return(new Result <T[][]>(algorithm.ErrorMessage, (message) =>
{
return new RouteNotFoundException(message);
}));
}
weights = algorithm.Weights;
}
else
{
var algorithm = new Itinero.Algorithms.Default.ManyToMany <T>(_db, weightHandler, sources, targets, maxSearch);
algorithm.Run();
if (!algorithm.HasSucceeded)
{
return(new Result <T[][]>(algorithm.ErrorMessage, (message) =>
{
return new RouteNotFoundException(message);
}));
}
weights = algorithm.Weights;
}
}
// check for invalids.
var invalidTargetCounts = new int[targets.Length];
for (var s = 0; s < weights.Length; s++)
{
var invalids = 0;
for (var t = 0; t < weights[s].Length; t++)
{
if (t != s)
{
if (weightHandler.GetMetric(weights[s][t]) == float.MaxValue)
{
invalids++;
invalidTargetCounts[t]++;
if (invalidTargetCounts[t] > (sources.Length - 1) / 2)
{
invalidTargets.Add(t);
}
}
}
}
if (invalids > (targets.Length - 1) / 2)
{
invalidSources.Add(s);
}
}
return(new Result <T[][]>(weights));
}
