uint ReadRelationVersions(uint relationIndex, string name, Dictionary <uint, RelationVersionInfo> relationVersions)
{
uint lastPersistedVersion = 0;
var relationInfoResolver = new RelationInfoResolver((ObjectDB)_tr.Owner);
var writer = new ByteBufferWriter();
writer.WriteByteArrayRaw(ObjectDB.RelationVersionsPrefix);
writer.WriteVUInt32(relationIndex);
_trkv.SetKeyPrefix(writer.Data);
if (!_trkv.FindFirstKey())
{
return(lastPersistedVersion);
}
var keyReader = new KeyValueDBKeyReader(_trkv);
var valueReader = new KeyValueDBValueReader(_trkv);
do
{
keyReader.Restart();
valueReader.Restart();
lastPersistedVersion = keyReader.ReadVUInt32();
var relationVersionInfo = RelationVersionInfo.LoadUnresolved(valueReader, name);
relationVersionInfo.ResolveFieldHandlers(relationInfoResolver.FieldHandlerFactory);
relationVersions[lastPersistedVersion] = relationVersionInfo;
} while (_trkv.FindNextKey());
return(lastPersistedVersion);
}
void LoadVersionInfos(IKeyValueDBTransaction tr)
{
LastPersistedVersion = 0;
var writer = new ByteBufferWriter();
writer.WriteByteArrayRaw(ObjectDB.RelationVersionsPrefix);
writer.WriteVUInt32(_id);
tr.SetKeyPrefix(writer.Data);
if (!tr.FindFirstKey())
{
return;
}
var keyReader = new KeyValueDBKeyReader(tr);
var valueReader = new KeyValueDBValueReader(tr);
do
{
keyReader.Restart();
valueReader.Restart();
LastPersistedVersion = keyReader.ReadVUInt32();
var relationVersionInfo = RelationVersionInfo.Load(valueReader,
_relationInfoResolver.FieldHandlerFactory, _name);
_relationVersions[LastPersistedVersion] = relationVersionInfo;
} while (tr.FindNextKey());
}
public void Iterate(bool sortTableByNameAsc = false)
{
LoadTableNamesDict();
LoadRelationNamesDict();
MarkLastDictId();
_trkv.SetKeyPrefixUnsafe(ObjectDB.TableSingletonsPrefix);
var keyReader = new KeyValueDBKeyReader(_trkv);
var valueReader = new KeyValueDBValueReader(_trkv);
_singletons = new Dictionary <uint, ulong>();
while (_trkv.FindNextKey())
{
keyReader.Restart();
valueReader.Restart();
_singletons.Add(keyReader.ReadVUInt32(), valueReader.ReadVUInt64());
}
if (sortTableByNameAsc)
{
_singletons = _singletons.OrderBy(item =>
{
string name;
return(_tableId2Name.TryGetValue(item.Key, out name) ? name : string.Empty);
}).ToDictionary(item => item.Key, item => item.Value);
}
foreach (var singleton in _singletons)
{
string name;
if (_visitor != null &&
!_visitor.VisitSingleton(singleton.Key,
_tableId2Name.TryGetValue(singleton.Key, out name) ? name : null, singleton.Value))
{
continue;
}
MarkTableName(singleton.Key);
_trkv.SetKeyPrefixUnsafe(ObjectDB.TableSingletonsPrefix);
if (_trkv.Find(Vuint2ByteBuffer(singleton.Key)) == FindResult.Exact)
{
_fastVisitor.MarkCurrentKeyAsUsed(_trkv);
}
IterateOid(singleton.Value);
}
foreach (var relation in _relationId2Name)
{
if (_visitor != null && !_visitor.StartRelation(relation.Value))
{
continue;
}
MarkRelationName(relation.Key);
IterateRelation(relation.Key, relation.Value);
if (_visitor != null)
{
_visitor.EndRelation();
}
}
}
static IEnumerable <string> LoadTablesEnum(IKeyValueDBTransaction tr)
{
tr.SetKeyPrefix(TableNamesPrefix);
var valueReader = new KeyValueDBValueReader(tr);
while (tr.Enumerate())
{
valueReader.Restart();
yield return(valueReader.ReadString());
}
}
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()));
}
}
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());
}
}
}
static IEnumerable<string> LoadTablesEnum(IKeyValueDBTransaction tr)
{
tr.SetKeyPrefix(TableNamesPrefix);
var valueReader = new KeyValueDBValueReader(tr);
while (tr.Enumerate())
{
valueReader.Restart();
yield return valueReader.ReadString();
}
}