public int Insert(ImmutableObject obj)
{
ImmutableObject previousObject = LastObject();
// If the object is new then we need to set the id to the next unique id available
if (obj.Version == -1)
{
obj.Id = _latestVersionIndex.Last() + 1;
}
obj.InsertOp(previousObject.Index + 1, previousObject.Hash);
WriteObject(obj);
return(obj.Id);
}
public Chain(string dbName)
{
_index = new Index <long>(Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments), $"{dbName}.index"));
_latestVersionIndex = new LinkedIndex <int>(Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments), $"{dbName}.latestVersion");
_chainStream = new FileStream(Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments), $"{dbName}.data"), FileMode.OpenOrCreate, FileAccess.ReadWrite);
if (!Any)
{
var genesis = new ImmutableObject()
{
Json = string.Empty
};
genesis.InsertOp(0, string.Empty);
WriteObject(genesis);
}
}