private static List <Tile> BuildInitial(OsmStreamSource source, string path, uint maxZoom, Tile tile, bool compressed = false)
{
// split nodes and return nodes index and non-empty tiles.
var nodeIndex = NodeProcessor.Process(source, path, maxZoom, tile, out var nonEmptyTiles, out var hasNext, compressed);
// split ways using the node index and return the way index.
Index wayIndex = null;
if (hasNext)
{
wayIndex = WayProcessor.Process(source, path, maxZoom, tile, nodeIndex, compressed);
}
// split relations using the node and way index and return the relation index.
var relationIndex = RelationProcessor.Process(source, path, maxZoom, tile, nodeIndex, wayIndex, compressed);
// write the indices to disk.
// var actions = new List<Action>
// {
// () => nodeIndex.Write(FileSystemFacade.FileSystem.Combine(path, tile.Zoom.ToString(),
// tile.X.ToString(), tile.Y.ToString() + ".nodes.idx")),
// () => wayIndex?.Write(FileSystemFacade.FileSystem.Combine(path, tile.Zoom.ToString(),
// tile.X.ToString(), tile.Y.ToString() + ".ways.idx")),
// () => relationIndex?.Write(FileSystemFacade.FileSystem.Combine(path, tile.Zoom.ToString(),
// tile.X.ToString(), tile.Y.ToString() + ".relations.idx"))
// };
// System.Threading.Tasks.Parallel.ForEach(actions, (a) => a());
nodeIndex.Write(FileSystemFacade.FileSystem.Combine(path, tile.Zoom.ToString(),
tile.X.ToString(), tile.Y.ToString() + ".nodes.idx"));
wayIndex?.Write(FileSystemFacade.FileSystem.Combine(path, tile.Zoom.ToString(),
tile.X.ToString(), tile.Y.ToString() + ".ways.idx"));
relationIndex?.Write(FileSystemFacade.FileSystem.Combine(path, tile.Zoom.ToString(),
tile.X.ToString(), tile.Y.ToString() + ".relations.idx"));
return(nonEmptyTiles);
}
/// <summary>
/// Builds the database and writes the structure to the given by by splitting the given zoom level.
/// </summary>
private static List <Tile> Build(string path, uint maxZoom, Tile tile, bool compressed = false)
{
// split nodes and return index and non-empty tiles.
List <Tile> nonEmptyTiles = null;
Index nodeIndex = null;
var nodeFile = DatabaseCommon.BuildPathToTile(path, OsmGeoType.Node, tile, compressed);
if (!FileSystemFacade.FileSystem.Exists(nodeFile))
{
Log.Logger.Warning("Tile {0}/{1}/{2} not found: {3}", tile.Zoom, tile.X, tile.Y,
nodeFile);
return(new List <Tile>());
}
using (var nodeStream = DatabaseCommon.LoadTile(path, OsmGeoType.Node, tile, compressed))
{
var nodeSource = new OsmSharp.Streams.BinaryOsmStreamSource(nodeStream);
// split nodes and return nodes index and non-empty tiles.
nodeIndex = NodeProcessor.Process(nodeSource, path, maxZoom, tile, out nonEmptyTiles,
out _, compressed);
}
// build the ways index.
Index wayIndex = null;
var wayFile = DatabaseCommon.BuildPathToTile(path, OsmGeoType.Way, tile, compressed);
if (FileSystemFacade.FileSystem.Exists(wayFile))
{
using (var wayStream = DatabaseCommon.LoadTile(path, OsmGeoType.Way, tile, compressed))
{
var waySource = new OsmSharp.Streams.BinaryOsmStreamSource(wayStream);
if (waySource.MoveNext())
{
wayIndex = WayProcessor.Process(waySource, path, maxZoom, tile, nodeIndex, compressed);
}
}
}
// build the relations index.
Index relationIndex = null;
var relationFile = DatabaseCommon.BuildPathToTile(path, OsmGeoType.Relation, tile, compressed);
if (FileSystemFacade.FileSystem.Exists(relationFile))
{
using (var relationStream = DatabaseCommon.LoadTile(path, OsmGeoType.Relation, tile, compressed))
{
var relationSource = new OsmSharp.Streams.BinaryOsmStreamSource(relationStream);
if (relationSource.MoveNext())
{
relationIndex = RelationProcessor.Process(relationSource, path, maxZoom, tile, nodeIndex, wayIndex, compressed);
}
}
}
// write the indexes to disk.
nodeIndex.Write(FileSystemFacade.FileSystem.Combine(path, tile.Zoom.ToString(),
tile.X.ToString(), tile.Y.ToString() + ".nodes.idx"));
wayIndex?.Write(FileSystemFacade.FileSystem.Combine(path, tile.Zoom.ToString(),
tile.X.ToString(), tile.Y.ToString() + ".ways.idx"));
relationIndex?.Write(FileSystemFacade.FileSystem.Combine(path, tile.Zoom.ToString(),
tile.X.ToString(), tile.Y.ToString() + ".relations.idx"));
// var actions = new List<Action>
// {
// () => nodeIndex.Write(FileSystemFacade.FileSystem.Combine(path, tile.Zoom.ToString(),
// tile.X.ToString(), tile.Y.ToString() + ".nodes.idx")),
// () => wayIndex?.Write(FileSystemFacade.FileSystem.Combine(path, tile.Zoom.ToString(),
// tile.X.ToString(), tile.Y.ToString() + ".ways.idx")),
// () => relationIndex?.Write(FileSystemFacade.FileSystem.Combine(path, tile.Zoom.ToString(),
// tile.X.ToString(), tile.Y.ToString() + ".relations.idx"))
// };
// System.Threading.Tasks.Parallel.ForEach(actions, (a) => a());
if (FileSystemFacade.FileSystem.Exists(nodeFile))
{
FileSystemFacade.FileSystem.Delete(nodeFile);
}
if (FileSystemFacade.FileSystem.Exists(wayFile))
{
FileSystemFacade.FileSystem.Delete(wayFile);
}
if (FileSystemFacade.FileSystem.Exists(relationFile))
{
FileSystemFacade.FileSystem.Delete(relationFile);
}
return(nonEmptyTiles);
}