/// <summary>
/// Deserializes a database from the given stream.
/// </summary>
public static RouterDb Deserialize(Stream stream, RouterDbProfile profile)
{
// deserialize all basic data.
// version1: OsmSharp.Routing state of layout.
// version2: Added ShortcutsDbs.
// version3: Add advanced profile serialization.
// version4: Added missing restriction dbs.
var version = stream.ReadByte();
if (version != 1 && version != 2 && version != 3 && version != 4)
{
throw new Exception(string.Format("Cannot deserialize routing db: Invalid version #: {0}.", version));
}
var guidBytes = new byte[16];
stream.Read(guidBytes, 0, 16);
var guid = new Guid(guidBytes);
var supportedVehicleInstances = new List <Vehicle>();
if (version <= 2)
{ // just contains vehicle names.
var supportedVehicles = stream.ReadWithSizeStringArray();
foreach (var vehicleName in supportedVehicles)
{
Profile vehicleProfile;
if (Profile.TryGet(vehicleName, out vehicleProfile))
{
supportedVehicleInstances.Add(vehicleProfile.Parent);
}
else
{
Itinero.Logging.Logger.Log("RouterDb", Logging.TraceEventType.Warning, "Vehicle with name {0} was not found, register all vehicle profiles before deserializing the router db.",
vehicleName);
}
}
}
else
{ // contains the full vehicles.
var lengthBytes = new byte[4];
stream.Read(lengthBytes, 0, 4);
var size = BitConverter.ToInt32(lengthBytes, 0);
for (var i = 0; i < size; i++)
{
var vehicle = Vehicle.Deserialize(stream);
supportedVehicleInstances.Add(vehicle);
vehicle.Register();
}
}
var metaDb = stream.ReadWithSizeAttributesCollection();
var shorcutsCount = (int)0;
if (version >= 2)
{ // when version < 1 there are no shortcuts and thus no shortcut count.
shorcutsCount = stream.ReadByte();
}
var contractedCount = stream.ReadByte();
var restrictionDbCount = 0;
if (version >= 4)
{
restrictionDbCount = stream.ReadByte();
}
var profiles = AttributesIndex.Deserialize(new LimitedStream(stream), true);
var meta = AttributesIndex.Deserialize(new LimitedStream(stream), true);
var network = RoutingNetwork.Deserialize(stream, profile == null ? null : profile.RoutingNetworkProfile);
// create router db.
var routerDb = new RouterDb(guid, network, profiles, meta, metaDb, supportedVehicleInstances.ToArray());
// read all shortcut dbs.
for (var i = 0; i < shorcutsCount; i++)
{
var shortcutsName = stream.ReadWithSizeString();
var shorcutsDb = ShortcutsDb.Deserialize(stream);
routerDb._shortcutsDbs[shortcutsName] = shorcutsDb;
}
// read all contracted versions.
for (var i = 0; i < contractedCount; i++)
{
var profileName = stream.ReadWithSizeString();
var contracted = ContractedDb.Deserialize(stream, profile == null ? null : profile.ContractedDbProfile);
routerDb._contracted[profileName] = contracted;
}
// read all restriction dbs.
for (var i = 0; i < restrictionDbCount; i++)
{
var restrictionDbName = stream.ReadWithSizeString();
var restrictionDb = RestrictionsDb.Deserialize(stream, profile == null ? null : profile.RestrictionDbProfile);
routerDb._restrictionDbs[restrictionDbName] = restrictionDb;
}
return(routerDb);
}
public void TestSerializeDeserializeNoCacheProfile()
{
var db = new RestrictionsDb(1024);
db.Add(1, 2, 3);
db.Add(10, 11, 12);
db.Add(10, 111, 222);
db.Add(12, 2, 3);
var stream = new MemoryStream();
var size = db.Serialize(stream);
Assert.AreEqual(stream.Position, size);
stream.Seek(0, SeekOrigin.Begin);
db = RestrictionsDb.Deserialize(stream, RestrictionsDbProfile.NoCache);
var enumerator = db.GetEnumerator();
Assert.IsTrue(enumerator.MoveTo(12));
Assert.IsTrue(enumerator.MoveNext());
Assert.AreEqual(3, enumerator.Count);
Assert.AreEqual(10, enumerator[0]);
Assert.AreEqual(11, enumerator[1]);
Assert.AreEqual(12, enumerator[2]);
Assert.IsTrue(enumerator.MoveNext());
Assert.AreEqual(3, enumerator.Count);
Assert.AreEqual(12, enumerator[0]);
Assert.AreEqual(2, enumerator[1]);
Assert.AreEqual(3, enumerator[2]);
enumerator = db.GetEnumerator();
Assert.IsTrue(enumerator.MoveTo(3));
Assert.IsTrue(enumerator.MoveNext());
Assert.AreEqual(3, enumerator.Count);
Assert.AreEqual(1, enumerator[0]);
Assert.AreEqual(2, enumerator[1]);
Assert.AreEqual(3, enumerator[2]);
Assert.IsTrue(enumerator.MoveNext());
Assert.AreEqual(3, enumerator.Count);
Assert.AreEqual(12, enumerator[0]);
Assert.AreEqual(2, enumerator[1]);
Assert.AreEqual(3, enumerator[2]);
db = new RestrictionsDb(1024);
db.Add(1, 2, 3);
db.Add(1, 2, 3, 4);
stream.Dispose();
stream = new MemoryStream();
size = db.Serialize(stream);
Assert.AreEqual(stream.Position, size);
stream.Seek(0, SeekOrigin.Begin);
db = RestrictionsDb.Deserialize(stream, RestrictionsDbProfile.NoCache);
enumerator = db.GetEnumerator();
Assert.IsTrue(enumerator.MoveTo(1));
Assert.IsTrue(enumerator.MoveNext());
Assert.AreEqual(3, enumerator.Count);
Assert.AreEqual(1, enumerator[0]);
Assert.AreEqual(2, enumerator[1]);
Assert.AreEqual(3, enumerator[2]);
Assert.IsTrue(enumerator.MoveNext());
Assert.AreEqual(4, enumerator.Count);
Assert.AreEqual(1, enumerator[0]);
Assert.AreEqual(2, enumerator[1]);
Assert.AreEqual(3, enumerator[2]);
Assert.AreEqual(4, enumerator[3]);
Assert.IsFalse(enumerator.MoveNext());
}
