object ReadObjFinish(ulong oid, TableInfo tableInfo, KeyValueDBValueReader reader)
{
var tableVersion = reader.ReadVUInt32();
var obj = tableInfo.GetLoader(tableVersion)(this, oid, reader);
_objCache.TryAdd(oid, new WeakReference(obj));
return(obj);
}
void IterateOid(ulong oid)
{
if (!_visitedOids.Add(oid))
{
return;
}
_tr.TransactionProtector.Start();
_trkv.SetKeyPrefix(ObjectDB.AllObjectsPrefix);
if (_trkv.Find(Vuint2ByteBuffer(oid)) != FindResult.Exact)
{
return; // Object oid was deleted
}
_fastVisitor.MarkCurrentKeyAsUsed(_trkv);
var reader = new KeyValueDBValueReader(_trkv);
var tableId = reader.ReadVUInt32();
var version = reader.ReadVUInt32();
MarkTableIdVersionFieldInfo(tableId, version);
string tableName;
if (_visitor != null && !_visitor.StartObject(oid, tableId, _tableId2Name.TryGetValue(tableId, out tableName) ? tableName : null,
version))
{
return;
}
var tvi = GetTableVersionInfo(tableId, version);
var knownInlineId = new HashSet <int>();
for (var i = 0; i < tvi.FieldCount; i++)
{
var fi = tvi[i];
if (_visitor == null || _visitor.StartField(fi.Name))
{
IterateHandler(reader, fi.Handler, false, knownInlineId);
_visitor?.EndField();
}
else
{
IterateHandler(reader, fi.Handler, true, knownInlineId);
}
}
_visitor?.EndObject();
}
internal static IEnumerable <KeyValuePair <uint, string> > LoadRelationNamesEnum(IKeyValueDBTransaction tr)
{
tr.SetKeyPrefixUnsafe(RelationNamesPrefix);
var keyReader = new KeyValueDBKeyReader(tr);
var valueReader = new KeyValueDBValueReader(tr);
while (tr.FindNextKey())
{
keyReader.Restart();
valueReader.Restart();
yield return(new KeyValuePair <uint, string>(valueReader.ReadVUInt32(), keyReader.ReadString()));
}
}
KeyValueDBValueReader ReadObjStart(ulong oid, out TableInfo tableInfo)
{
var reader = new KeyValueDBValueReader(_keyValueTr);
var tableId = reader.ReadVUInt32();
tableInfo = _owner.TablesInfo.FindById(tableId);
if (tableInfo == null)
{
throw new BTDBException(string.Format("Unknown TypeId {0} of Oid {1}", tableId, oid));
}
EnsureClientTypeNotNull(tableInfo);
return(reader);
}
public IEnumerable <UnseenKey> UnseenKeys()
{
using (var trkv = _keyValueDb.StartReadOnlyTransaction())
{
foreach (var prefix in SupportedKeySpaces())
{
trkv.SetKeyPrefixUnsafe(prefix);
if (!trkv.FindFirstKey())
{
continue;
}
var reader = new KeyValueDBValueReader(trkv);
do
{
reader.Restart();
yield return(new UnseenKey
{
Key = Merge(prefix, trkv.GetKeyAsByteArray()),
ValueSize = reader.ReadVUInt32()
});
} while (trkv.FindNextKey());
}
}
}
void IterateRelation(uint relationIndex, string name)
{
var relationVersions = new Dictionary <uint, RelationVersionInfo>();
var lastPersistedVersion = ReadRelationVersions(relationIndex, name, relationVersions);
_tr.TransactionProtector.Start();
var o = ObjectDB.AllRelationsPKPrefix.Length;
var prefix = new byte[o + PackUnpack.LengthVUInt(relationIndex)];
Array.Copy(ObjectDB.AllRelationsPKPrefix, prefix, o);
PackUnpack.PackVUInt(prefix, ref o, relationIndex);
var protector = _tr.TransactionProtector;
long prevProtectionCounter = 0;
long pos = 0;
while (true)
{
protector.Start();
if (pos == 0)
{
_trkv.SetKeyPrefix(prefix);
if (!_trkv.FindFirstKey())
{
break;
}
}
else
{
if (protector.WasInterupted(prevProtectionCounter))
{
_trkv.SetKeyPrefix(prefix);
if (!_trkv.SetKeyIndex(pos))
{
break;
}
}
else
{
if (!_trkv.FindNextKey())
{
break;
}
}
}
_fastVisitor.MarkCurrentKeyAsUsed(_trkv);
prevProtectionCounter = protector.ProtectionCounter;
if (_visitor == null || _visitor.StartRelationKey())
{
var keyReader = new KeyValueDBKeyReader(_trkv);
var relationInfo = relationVersions[lastPersistedVersion];
IterateFields(keyReader, relationInfo.GetPrimaryKeyFields(), null);
_visitor?.EndRelationKey();
}
if (protector.WasInterupted(prevProtectionCounter))
{
_trkv.SetKeyPrefix(prefix);
if (!_trkv.SetKeyIndex(pos))
{
break;
}
}
if (_visitor == null || _visitor.StartRelationValue())
{
var valueReader = new KeyValueDBValueReader(_trkv);
var version = valueReader.ReadVUInt32();
var relationInfo = relationVersions[version];
IterateFields(valueReader, relationInfo.GetValueFields(), new HashSet <int>());
_visitor?.EndRelationValue();
}
pos++;
}
}
