public File GetFile(string path)
{
var relativeToTaxonomyRootPath = PathExt.GetRelativePath(RootPath, Path.GetFullPath(path));
using (var transaction = connection.BeginTransaction())
{
File file;
using (
var command = connection.CreateCommand())
{
command.CommandText = @"SELECT * FROM files WHERE path = @path";
command.Parameters.Add(facade.Parameter("@path", DbType.String));
command.Parameters["@path"].Value = relativeToTaxonomyRootPath;
file = LookupFiles(command).FirstOrDefault();
}
if (file != null)
{
return(file);
}
long id;
var tagCollection = new Lazy <ICollection <Tag> >(() => new ObservableSet <Tag>());
file = new File(0, RootPath, relativeToTaxonomyRootPath, tagCollection);
using (
var command = connection.CreateCommand())
{
command.CommandText = @"INSERT INTO files (path, hash) VALUES (@path, @hash)";
command.Parameters.Add(facade.Parameter("@path", DbType.String));
command.Parameters.Add(facade.Parameter("@hash", DbType.Binary));
command.Parameters["@path"].Value = file.RelativePath;
command.Parameters["@hash"].Value = file.Hash;
command.ExecuteNonQuery();
id = facade.LastInsertRowId(connection);
}
file.Id = id;
transaction.Commit();
ObserveTagCollectionForFile(file.Id, (ObservableSet <Tag>)tagCollection.Value);
fileCache.Add(file.Id, new WeakReference <File>(file));
return(file);
}
}
// set a path: can be relative or absolute
private void SetPath(string newPath)
{
relativePath = Path.IsPathRooted(newPath)
? PathExt.GetRelativePath(RootPath, newPath)
: PathExt.GetRelativePath(RootPath, Path.Combine(Directory.GetCurrentDirectory(), newPath));
}