/// <summary>
/// Concept of the objects storage (read docu from 20170321)
/// Get object from a datablock with a fixed address,
/// having that the pointer to the object (16 byte) is saved from the startIndex inside of a row's value.
/// Returns null if object is not found.
/// </summary>
/// <typeparam name="TVal"></typeparam>
/// <returns></returns>
public DBriize.Objects.DBriizeObject <TVal> ObjectGet <TVal>()
{
var ret = new Objects.DBriizeObject <TVal>();
byte[] dataBlockId = null;
int startIndex = 0;
if (_exists)
{
if (_row.ValueIsReadOut)
{
if (_row.Value == null)
{
return(null);
}
dataBlockId = _row.Value.Substring(startIndex, 16);
}
else
{
long valueStartPointer = 0;
uint valueFullLength = 0;
dataBlockId = this._row.Root.Tree.Cache.ReadValuePartially(this._row.LinkToValue, (uint)startIndex, 16, this._useCache, out valueStartPointer, out valueFullLength);
}
}
else
{
return(null);
}
if (dataBlockId == null)
{
return(null);
}
ret.ptrToExisingEntity = dataBlockId;
dataBlockId = this._row.Root.Tree.Cache.ReadDynamicDataBlock(ref dataBlockId, this._useCache);
Dictionary <uint, byte[]> d = new Dictionary <uint, byte[]>();
ret.ExisingEntity = this._row.Root.Tree.Cache.ReadDynamicDataBlock(ref dataBlockId, this._useCache);
Biser.Decode_DICT_PROTO_UINT_BYTEARRAY(ret.ExisingEntity, d);
if (d == null || d.Count < 1)
{
return(null);
}
ret.Entity = DataTypesConvertor.ConvertBack <TVal>(d[0]);
return(ret);
}
//byte[] btKey = null;
public Row(LTrieRow row, LTrie masterTrie, bool useCache)
{
if (row == null)
{
_exists = false;
}
else
{
_row = row;
//_root = row._root;
//_ptrToValue = row.LinkToValue;
_exists = row.Exists;
}
_useCache = useCache;
_masterTrie = masterTrie;
if (_exists)
{
_key = DataTypesConvertor.ConvertBack <TKey>(row.Key);
}
}
/// <summary>
/// Returns datablock which fixed address, which identifier is stored in this row from specified index.
/// </summary>
/// <typeparam name="TVal"></typeparam>
/// <param name="startIndex"></param>
/// <returns></returns>
public TVal GetDataBlockWithFixedAddress <TVal>(uint startIndex = 0)
{
byte[] dataBlockId = null;
if (_exists)
{
if (_row.ValueIsReadOut)
{
if (_row.Value == null)
{
return(default(TVal));
}
dataBlockId = _row.Value.Substring((int)startIndex, 16);
//dataBlockId=this._row.Root.Tree.Cache.ReadDynamicDataBlock(ref dataBlockId, this._useCache);
//return DataTypesConvertor.ConvertBack<TValue>(this._row.Root.Tree.Cache.ReadDynamicDataBlock(ref dataBlockId, this._useCache));
//return this._row.Root.Tree.Cache.ReadDynamicDataBlock(ref dataBlockId, this._useCache);
}
long valueStartPointer = 0;
uint valueFullLength = 0;
dataBlockId = this._row.Root.Tree.Cache.ReadValuePartially(this._row.LinkToValue, startIndex, 16, this._useCache, out valueStartPointer, out valueFullLength);
//return this._row.Root.Tree.Cache.ReadDynamicDataBlock(ref dataBlockId, this._useCache);
//dataBlockId = this._row.Root.Tree.Cache.ReadDynamicDataBlock(ref dataBlockId, this._useCache);
//return DataTypesConvertor.ConvertBack<TValue>(this._row.Root.Tree.Cache.ReadDynamicDataBlock(ref dataBlockId, this._useCache));
}
if (dataBlockId == null)
{
return(default(TVal));
}
dataBlockId = this._row.Root.Tree.Cache.ReadDynamicDataBlock(ref dataBlockId, this._useCache);
return(DataTypesConvertor.ConvertBack <TVal>(this._row.Root.Tree.Cache.ReadDynamicDataBlock(ref dataBlockId, this._useCache)));
}