void Seek()
{
if (_ascending)
{
_keyValueTr.SetKeyIndex(_owner._prefix, _startPos + _pos);
}
else
{
_keyValueTr.SetKeyIndex(_owner._prefix, _startPos - _pos);
}
_seekState = SeekState.Ready;
}
void Seek()
{
if (_ascending)
{
_keyValueTr.SetKeyIndex(_startPos + _pos);
}
else
{
_keyValueTr.SetKeyIndex(_startPos - _pos);
}
_seekNeeded = false;
}
public void IterateRelationRow(ODBIteratorRelationInfo relation, long pos)
{
var prefix = BuildRelationPrefix(relation.Id);
if (!_trkv.SetKeyIndex(prefix, pos))
{
return;
}
var prevProtectionCounter = _trkv.CursorMovedCounter;
if (_visitor == null || _visitor.StartRelationKey())
{
var keyReader = new SpanReader(_trkv.GetKey().Slice(prefix.Length));
var relationInfo = relation.VersionInfos[relation.LastPersistedVersion];
IterateFields(ref keyReader, relationInfo.PrimaryKeyFields.Span, null);
_visitor?.EndRelationKey();
}
if (_trkv.CursorMovedCounter != prevProtectionCounter)
{
if (!_trkv.SetKeyIndex(prefix, pos))
{
return;
}
}
if (_visitor == null || _visitor.StartRelationValue())
{
var valueReader = new SpanReader(_trkv.GetValue());
var version = valueReader.ReadVUInt32();
var relationInfo = relation.VersionInfos[version];
IterateFields(ref valueReader, relationInfo.Fields.Span, new HashSet <int>());
_visitor?.EndRelationValue();
}
}
public IEnumerator <TKey> GetEnumerator()
{
long prevProtectionCounter = 0;
var prevModificationCounter = 0;
long pos = 0;
while (true)
{
_keyValueTrProtector.Start();
if (pos == 0)
{
prevModificationCounter = _modificationCounter;
_keyValueTr.SetKeyPrefix(_prefix);
if (!_keyValueTr.FindFirstKey())
{
break;
}
}
else
{
if (_keyValueTrProtector.WasInterupted(prevProtectionCounter))
{
if (prevModificationCounter != _modificationCounter)
{
ThrowModifiedDuringEnum();
}
_keyValueTr.SetKeyPrefix(_prefix);
if (!_keyValueTr.SetKeyIndex(pos))
{
break;
}
}
else
{
if (!_keyValueTr.FindNextKey())
{
break;
}
}
}
prevProtectionCounter = _keyValueTrProtector.ProtectionCounter;
var keyBytes = _keyValueTr.GetKey();
var key = ByteArrayToKey(keyBytes);
yield return(key);
pos++;
}
}
public IEnumerator <TKey> GetEnumerator()
{
long prevProtectionCounter = 0;
var prevModificationCounter = 0;
long pos = 0;
while (true)
{
if (pos == 0)
{
prevModificationCounter = _modificationCounter;
if (!_keyValueTr.FindFirstKey(_prefix))
{
break;
}
}
else
{
if (_keyValueTr.CursorMovedCounter != prevProtectionCounter)
{
if (prevModificationCounter != _modificationCounter)
{
ThrowModifiedDuringEnum();
}
if (!_keyValueTr.SetKeyIndex(_prefix, pos))
{
break;
}
}
else
{
if (!_keyValueTr.FindNextKey(_prefix))
{
break;
}
}
}
prevProtectionCounter = _keyValueTr.CursorMovedCounter;
var key = CurrentToKey();
yield return(key);
pos++;
}
}
bool Seek()
{
if (!_keyValueTr.SetKeyIndex(_pos))
{
return(false);
}
_seekNeeded = false;
return(true);
}
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++;
}
}
void FreeContent(IReaderCtx readerCtx, int cfgId)
{
var config = ODBDictionaryConfiguration.Get(cfgId);
var ctx = (DBReaderWithFreeInfoCtx)readerCtx;
if (config.FreeContent == null)
{
var method = ILBuilder.Instance.NewMethod <FreeContentFun>($"IDictFinder_Cfg_{cfgId}");
var ilGenerator = method.Generator;
var readerLoc = ilGenerator.DeclareLocal(typeof(IReaderCtx));
ilGenerator
.Ldarg(0)
.Ldarg(2)
// ReSharper disable once ObjectCreationAsStatement
.Newobj(() => new DBReaderWithFreeInfoCtx(null, null))
.Stloc(readerLoc);
var readerOrCtx = _valueHandler.NeedsCtx() ? (Action <IILGen>?)(il => il.Ldloc(readerLoc)) : null;
_valueHandler.FreeContent(ilGenerator, il => il.Ldarg(1), readerOrCtx);
ilGenerator.Ret();
config.FreeContent = method.Create();
}
var findIDictAction = (FreeContentFun)config.FreeContent;
long prevProtectionCounter = 0;
long pos = 0;
while (true)
{
if (pos == 0)
{
if (!_keyValueTr.FindFirstKey(_prefix))
{
break;
}
}
else
{
if (_keyValueTr.CursorMovedCounter != prevProtectionCounter)
{
if (!_keyValueTr.SetKeyIndex(_prefix, pos))
{
break;
}
}
else
{
if (!_keyValueTr.FindNextKey(_prefix))
{
break;
}
}
}
prevProtectionCounter = _keyValueTr.CursorMovedCounter;
var valueBytes = _keyValueTr.GetValue();
var valueReader = new SpanReader(valueBytes);
findIDictAction(ctx.GetTransaction(), ref valueReader, ctx.DictIds);
pos++;
}
}
public bool SetKeyIndex(long index)
{
return(_keyValueDBTransaction.SetKeyIndex(index));
}
void FreeContent(IReaderCtx readerCtx, int cfgId)
{
var config = (ODBDictionaryConfiguration)((IInstanceRegistry)readerCtx).FindInstance(cfgId);
var ctx = (DBReaderWithFreeInfoCtx)readerCtx;
if (config.FreeContent == null)
{
var method = ILBuilder.Instance
.NewMethod <Action <IInternalObjectDBTransaction, AbstractBufferedReader, IList <ulong> > >(
$"IDictFinder_Cfg_{cfgId}");
var ilGenerator = method.Generator;
var readerLoc = ilGenerator.DeclareLocal(typeof(IReaderCtx));
ilGenerator
.Ldarg(0)
.Ldarg(1)
.Ldarg(2)
.Newobj(() => new DBReaderWithFreeInfoCtx(null, null, null))
.Stloc(readerLoc);
Action <IILGen> readerOrCtx;
if (_valueHandler.NeedsCtx())
{
readerOrCtx = il => il.Ldloc(readerLoc);
}
else
{
readerOrCtx = il => il.Ldarg(1);
}
_valueHandler.FreeContent(ilGenerator, readerOrCtx);
ilGenerator.Ret();
config.FreeContent = method.Create();
}
var findIDictAction = (Action <IInternalObjectDBTransaction, AbstractBufferedReader, IList <ulong> >)config.FreeContent;
long prevProtectionCounter = 0;
long pos = 0;
while (true)
{
_keyValueTrProtector.Start();
if (pos == 0)
{
_keyValueTr.SetKeyPrefix(_prefix);
if (!_keyValueTr.FindFirstKey())
{
break;
}
}
else
{
if (_keyValueTrProtector.WasInterupted(prevProtectionCounter))
{
_keyValueTr.SetKeyPrefix(_prefix);
if (!_keyValueTr.SetKeyIndex(pos))
{
break;
}
}
else
{
if (!_keyValueTr.FindNextKey())
{
break;
}
}
}
prevProtectionCounter = _keyValueTrProtector.ProtectionCounter;
var valueBytes = _keyValueTr.GetValueAsByteArray();
var valueReader = new ByteArrayReader(valueBytes);
findIDictAction(ctx.GetTransaction(), valueReader, ctx.DictIds);
pos++;
}
}
