public override ByteBuffer GetKeyBytes()
{
var keyWriter = new ByteBufferWriter();
keyWriter.WriteBlock(KeyBytes.Buffer, KeyBytes.Offset + ObjectDB.AllRelationsPKPrefix.Length, KeyBytes.Length - ObjectDB.AllRelationsPKPrefix.Length);
keyWriter.WriteBlock(base.GetKeyBytes());
return(keyWriter.Data);
}
protected virtual TValue CreateInstance(ByteBuffer prefixKeyBytes, ByteBuffer keyBytes)
{
var writer = new ByteBufferWriter();
writer.WriteBlock(_keyBytes.Buffer, _keyBytes.Offset + _lengthOfNonDataPrefix, _keyBytes.Length - _lengthOfNonDataPrefix);
writer.WriteBlock(keyBytes);
return((TValue)_manipulator.RelationInfo.CreateInstance(_tr, writer.Data, _keyValueTr.GetValue(), false));
}
protected override T CreateInstance(ByteBuffer keyBytes, ByteBuffer valueBytes)
{
var keyWriter = new ByteBufferWriter();
keyWriter.WriteBlock(KeyBytes.Buffer, KeyBytes.Offset + _skipBytes, KeyBytes.Length - _skipBytes);
keyWriter.WriteBlock(keyBytes);
return((T)RelationInfo.CreateInstance(Transaction, keyWriter.Data, valueBytes, false));
}
public IEnumerator <T> FindBySecondaryKey(uint secondaryKeyIndex, uint prefixFieldCount, ByteBuffer secKeyBytes)
{
var keyWriter = new ByteBufferWriter();
keyWriter.WriteBlock(secKeyBytes);
return(new RelationSecondaryKeyEnumerator <T>(_transaction, _relationInfo, keyWriter.Data.ToAsyncSafe(),
secondaryKeyIndex, prefixFieldCount, this));
}
void DeleteSecondaryKey(IKeyValueDBTransaction keyValueTr, uint prevIdx)
{
var writer = new ByteBufferWriter();
writer.WriteBlock(ObjectDB.AllRelationsSKPrefix);
writer.WriteVUInt32(Id);
writer.WriteVUInt32(prevIdx);
keyValueTr.SetKeyPrefix(writer.Data);
keyValueTr.EraseAll();
}
public int RemoveByKeyPrefixWithoutIterate(ByteBuffer keyBytesPrefix)
{
if (_hasSecondaryIndexes)
{
//keyBytePrefix contains [Index Relation, Primary key prefix] we need
// [Index Relation, Secondary Key Index, Primary key prefix]
int idBytesLength = ObjectDB.AllRelationsPKPrefix.Length + PackUnpack.LengthVUInt(_relationInfo.Id);
var writer = new ByteBufferWriter();
foreach (var secKey in _relationInfo.ClientRelationVersionInfo.SecondaryKeys)
{
writer.WriteBlock(ObjectDB.AllRelationsSKPrefix);
writer.WriteVUInt32(_relationInfo.Id);
writer.WriteVUInt32(secKey.Key);
writer.WriteBlock(keyBytesPrefix.Buffer, idBytesLength, keyBytesPrefix.Length - idBytesLength);
_transaction.KeyValueDBTransaction.SetKeyPrefix(writer.Data);
_transaction.KeyValueDBTransaction.EraseAll();
writer.Reset();
}
}
return(RemovePrimaryKeysByPrefix(keyBytesPrefix));
}
void SerializeIntoBuffer(object metadata, IReadOnlyList <object> events, out int startOffset,
out IDescriptorSerializerContext serializerContext, out BlockType blockType,
out int lenWithoutEndPadding, out ByteBuffer block)
{
startOffset = (int)EndBufferLen + HeaderSize;
var writer = new ByteBufferWriter();
writer.WriteBlock(_zeroes.AsSpan(0, startOffset));
serializerContext = Mapping;
if (metadata != null)
{
serializerContext = serializerContext.StoreNewDescriptors(writer, metadata);
}
if (events != null)
{
foreach (var o in events)
{
serializerContext = serializerContext.StoreNewDescriptors(writer, o);
}
if (events.Count == 0)
{
events = null;
}
}
serializerContext.FinishNewDescriptors(writer);
blockType = BlockType.FirstBlock;
if (serializerContext.SomeTypeStored)
{
blockType |= BlockType.HasTypeDeclaration;
}
if (metadata != null)
{
serializerContext.StoreObject(writer, metadata);
blockType |= BlockType.HasMetadata;
}
if (events != null)
{
if (events.Count == 1)
{
serializerContext.StoreObject(writer, events[0]);
blockType |= BlockType.HasOneEvent;
}
else
{
writer.WriteVUInt32((uint)events.Count);
foreach (var o in events)
{
serializerContext.StoreObject(writer, o);
}
blockType |= BlockType.HasMoreEvents;
}
}
lenWithoutEndPadding = (int)writer.GetCurrentPosition();
writer.WriteBlock(_zeroes.AsSpan(0, (int)(SectorSize - 1)));
block = writer.Data;
if (CompressionStrategy.ShouldTryToCompress(lenWithoutEndPadding - startOffset))
{
var compressedBlock = ByteBuffer.NewSync(block.Buffer, startOffset, lenWithoutEndPadding - startOffset);
if (CompressionStrategy.Compress(ref compressedBlock))
{
blockType |= BlockType.Compressed;
Array.Copy(compressedBlock.Buffer, compressedBlock.Offset, block.Buffer, startOffset, compressedBlock.Length);
lenWithoutEndPadding = startOffset + compressedBlock.Length;
Array.Copy(_zeroes, 0, block.Buffer, lenWithoutEndPadding, (int)SectorSize - 1);
}
}
}
