/// <summary>
/// Decodes the given line and augments all covered edges with the given attributes.
/// </summary>
/// <returns>True if the line is decoded properly and edges have been augmented with new data.</returns>
public static bool DecodeLine(this Coder coder, string encodedLine, IAttributeCollection attributes,
Func <IAttributeCollection, IAttributeCollection> reverse = null)
{
// check if routerdb is readonly or not.
if (coder.Router.Db.EdgeProfiles.IsReadonly)
{
//throw new ArgumentException("Cannot augment routerdb, EdgeProfiles are readonly.");
}
if (coder.Router.Db.EdgeMeta.IsReadonly)
{
//throw new ArgumentException("Cannot augment routerdb, EdgeMeta is readonly.");
}
var vehicle = coder.Profile.Profile.Parent;
var success = false;
// decode line.
var decoded = coder.Decode(encodedLine);
var line = decoded as ReferencedLine;
if (line == null)
{
return(false);
}
// loop over all covered edges.
var coveredEdges = line.GetCoveredEdges(coder.Router.Db);
foreach (var directedEdgeId in coveredEdges)
{
// get the edge id and set forward flag.
uint edgeId = (uint)(directedEdgeId - 1);
var forward = true;
if (directedEdgeId < 0)
{
edgeId = (uint)((-directedEdgeId) - 1);
forward = false;
}
// reverse if needed and possible.
var attributesToApply = attributes;
if (!forward && reverse != null)
{
attributesToApply = reverse(attributes);
}
// get edge details.
var edge = coder.Router.Db.Network.GetEdge(edgeId);
var profile = coder.Router.Db.EdgeProfiles.Get(edge.Data.Profile);
var meta = coder.Router.Db.EdgeMeta.Get(edge.Data.MetaId);
var existingAttributes = new AttributeCollection(meta);
existingAttributes.AddOrReplace(profile);
// add new attributes
existingAttributes.AddOrReplace(attributesToApply);
// update edge.
var newProfile = new AttributeCollection();
var newMeta = new AttributeCollection();
foreach (var a in existingAttributes)
{
if (vehicle.ProfileWhiteList.Contains(a.Key))
{
newProfile.AddOrReplace(a.Key, a.Value);
}
else
{
newMeta.AddOrReplace(a.Key, a.Value);
}
}
// add data to routerdb.
var profileId = edge.Data.Profile;
if (!newProfile.ContainsSame(profile))
{
profileId = (ushort)coder.Router.Db.EdgeProfiles.Add(newProfile);
}
var metaId = edge.Data.MetaId;
if (!newMeta.ContainsSame(meta))
{
metaId = coder.Router.Db.EdgeMeta.Add(newMeta);
}
// update edge in place.
coder.Router.Db.Network.UpdateEdgeData(edgeId, new Itinero.Data.Network.Edges.EdgeData()
{
Distance = edge.Data.Distance,
MetaId = metaId,
Profile = profileId
});
success = true;
}
return(success);
}