| static private BuildKeyForTableVersions ( uint tableId, uint tableVersion ) : byte[] | ||
| tableId | uint | |
| tableVersion | uint | |
| return | byte[] | |
void PersistTableInfo(TableInfo tableInfo)
{
_keyValueTrProtector.Start();
if (tableInfo.LastPersistedVersion != tableInfo.ClientTypeVersion)
{
if (tableInfo.LastPersistedVersion <= 0)
{
_keyValueTr.SetKeyPrefix(ObjectDB.TableNamesPrefix);
if (_keyValueTr.CreateKey(BuildKeyFromOid(tableInfo.Id)))
{
using (var writer = new KeyValueDBValueWriter(_keyValueTr))
{
writer.WriteString(tableInfo.Name);
}
}
}
_keyValueTr.SetKeyPrefix(ObjectDB.TableVersionsPrefix);
if (_keyValueTr.CreateKey(TableInfo.BuildKeyForTableVersions(tableInfo.Id, tableInfo.ClientTypeVersion)))
{
var tableVersionInfo = tableInfo.ClientTableVersionInfo;
using (var writer = new KeyValueDBValueWriter(_keyValueTr))
{
tableVersionInfo.Save(writer);
}
}
}
if (tableInfo.NeedStoreSingletonOid)
{
_keyValueTr.SetKeyPrefix(ObjectDB.TableSingletonsPrefix);
_keyValueTr.CreateOrUpdateKeyValue(BuildKeyFromOid(tableInfo.Id), BuildKeyFromOid((ulong)tableInfo.SingletonOid));
}
}
TableVersionInfo ITableInfoResolver.LoadTableVersionInfo(uint id, uint version, string tableName)
{
using (var tr = _keyValueDB.StartTransaction())
{
tr.SetKeyPrefix(TableVersionsPrefix);
var key = TableInfo.BuildKeyForTableVersions(id, version);
if (!tr.FindExactKey(key))
{
throw new BTDBException($"Missing TableVersionInfo Id:{id} Version:{version}");
}
return(TableVersionInfo.Load(new KeyValueDBValueReader(tr), _objectDB.FieldHandlerFactory, tableName));
}
}
uint ITableInfoResolver.GetLastPersistedVersion(uint id)
{
using (var tr = _keyValueDB.StartTransaction())
{
tr.SetKeyPrefix(TableVersionsPrefix);
var key = TableInfo.BuildKeyForTableVersions(id, uint.MaxValue);
if (tr.Find(ByteBuffer.NewSync(key)) == FindResult.NotFound)
{
return(0);
}
var key2 = tr.GetKeyAsByteArray();
var ofs = PackUnpack.LengthVUInt(id);
if (key2.Length < ofs)
{
return(0);
}
if (BitArrayManipulation.CompareByteArray(key, ofs, key2, ofs) != 0)
{
return(0);
}
return(checked ((uint)PackUnpack.UnpackVUInt(key2, ref ofs)));
}
}
