private void OnFileSystemObjectCreated(object sender, FileSystemEventArgs e)
{
if (_monitoredFiles.ContainsKey(e.FullPath))
{
_monitoredFiles[e.FullPath] = CreateFileDataObject(e.FullPath);
}
else if (_deletedFiles.Count > 0)
{
FileInfoCache created = new FileInfoCache(e.FullPath);
foreach (FileInfoCache deleted in _deletedFiles)
{
if (deleted.CreationTime == created.CreationTime || deleted.Name == created.Name || deleted.Length == created.Length)
{
// We assume that a recently deleted file with the same size
// and creation time of a monitored one is being moved.
UpdateFileDataObject(deleted.FullName, created.FullName);
_deletedFiles.Remove(deleted);
break;
}
}
}
}
private FileInfoCache CreateFileDataObject(string path)
{
FileInfoCache file = new FileInfoCache(path);
string queryString = @"
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX nfo: <http://www.semanticdesktop.org/ontologies/2007/03/22/nfo#>
SELECT ?uri WHERE
{
?uri a nfo:FileDataObject .
?uri nfo:fileUrl """ + file.Url.AbsoluteUri + @""" .
}
LIMIT 1";
SparqlQuery query = new SparqlQuery(queryString);
ISparqlQueryResult result = _model.ExecuteQuery(query);
BindingSet bindings = result.GetBindings().FirstOrDefault();
if (bindings == null)
{
FileDataObject f = _model.CreateResource <FileDataObject>();
f.CreationTime = file.CreationTime;
f.LastAccessTime = file.LastAccessTime;
f.LastModificationTime = file.LastWriteTime;
f.Url = file.Url.AbsoluteUri;
f.Commit();
_monitoredFileUris[file.Url] = f.Uri;
Logger.LogInfo("Created {0}", file.FullName);
}
else
{
_monitoredFileUris[file.Url] = new Uri(bindings["uri"].ToString());
Logger.LogInfo("Updating {0}", file.FullName);
}
return(file);
}
public void AddFile(string path)
{
_monitoredFiles[path] = new FileInfoCache(path);
}
