/// <summary> Builds persistent index from given parameters. </summary>
/// <param name="filePath">Path to map data file.</param>
/// <param name="outputDirectory">Output directory for index files.</param>
public void BuildIndex(string filePath, string outputDirectory)
{
if (!outputDirectory.StartsWith(_indexRootFolder))
{
Trace.Warn("index.mngr", Strings.MapIndexBuildOutputDirectoryMismatch);
}
// create directory for output files
_fileSystemService.CreateDirectory(outputDirectory);
// read settings
var jsonContent = _fileSystemService.ReadText(_indexSettingsPath);
var node = JSON.Parse(jsonContent);
var settings = new IndexSettings();
settings.ReadFromJson(node);
// create builder from given parameters
var builder = new PersistentIndexBuilder(filePath, outputDirectory,
_fileSystemService, settings, _objectPool, Trace);
// build
builder.Build();
}
private void ReadMapIndexHeader(string headerPath)
{
var boundingBox = PersistentIndexBuilder.ReadBoundingBox(_fileSystemService.ReadStream(headerPath));
var node = new TreeNode()
{
Path = Path.GetDirectoryName(headerPath)
};
_tree.Insert(node, boundingBox);
}
/// <summary> Creates instance of <see cref="ElementSource" /> from persistent storage. </summary>
/// <param name="directory">Already resolved directory which contains all indecies.</param>
/// <param name="fileService">File system service.</param>
/// <param name="objectPool">ObjectPool.</param>
internal ElementSource(string directory, IFileSystemService fileService, IObjectPool objectPool)
{
// load map data from streams
BoundingBox = PersistentIndexBuilder.ReadBoundingBox(fileService.ReadStream(string.Format(MapConsts.HeaderPathFormat, directory)));
KvUsage = new KeyValueUsage(fileService.ReadStream(string.Format(MapConsts.KeyValueUsagePathFormat, directory)));
KvIndex = KeyValueIndex.Load(fileService.ReadStream(string.Format(MapConsts.KeyValueIndexPathFormat, directory)));
KvStore = new KeyValueStore(KvIndex, KvUsage, fileService.ReadStream(string.Format(MapConsts.KeyValueStorePathFormat, directory)));
ElementStore = new ElementStore(KvStore, fileService.ReadStream(string.Format(MapConsts.ElementStorePathFormat, directory)), objectPool);
SpatialIndexTree = SpatialIndex.Load(fileService.ReadStream(string.Format(MapConsts.SpatialIndexPathFormat, directory)));
IsReadOnly = true;
}
