/// <summary>
/// Delete a file inside datafile and all metadata related
/// </summary>
public bool Delete(string id)
{
if (string.IsNullOrEmpty(id))
{
throw new ArgumentNullException("id");
}
// remove file reference in _files
var d = _engine.Delete(FILES, Query.EQ("_id", id));
// if not found, just return false
if (d == 0)
{
return(false);
}
var index = 0;
while (true)
{
var del = _engine.Delete(CHUNKS, Query.EQ("_id", LiteFileInfo.GetChunckId(id, index++)));
if (del == 0)
{
break;
}
}
return(true);
}
private byte[] GetChunkData(int index)
{
// check if there is no more chunks in this file
var chunk = _engine
.Find(LiteFileStorage.CHUNKS, Query.EQ("_id", LiteFileInfo.GetChunckId(FileInfo.Id, index)))
.FirstOrDefault();
// if chunk is null there is no more chunks
return(chunk == null ? null : chunk["data"].AsBinary);
}
private byte[] GetChunkData(int index)
{
// avoid too many extend pages on memory
_db.Cache.RemoveExtendPages();
// check if there is no more chunks in this file
var chunks = _db.GetCollection("_chunks");
var chunk = chunks.FindById(LiteFileInfo.GetChunckId(_file.Id, index));
// if chunk is null there is no more chunks
return(chunk == null ? null : chunk["data"].AsBinary);
}
/// <summary>
/// Delete a file inside datafile and all metadata related
/// </summary>
public bool Delete(string id)
{
if (string.IsNullOrEmpty(id))
{
throw new ArgumentNullException("id");
}
if (this.Database.Transaction.IsInTransaction)
{
throw LiteException.InvalidTransaction();
}
// remove file reference in _files
var d = this.Files.Delete(id);
// if not found, just return false
if (d == false)
{
return(false);
}
var index = 0;
while (true)
{
var del = Chunks.Delete(LiteFileInfo.GetChunckId(id, index++));
this.Database.Cache.RemoveExtendPages();
if (del == false)
{
break;
}
}
return(true);
}