public unsafe void Execute(uint stage, SharpMedia.Database.Physical.Journalling.IService service)
{
Debug.Assert(stage == 0);
// 1) We first write object to stream.
BlockStream stream = service.AllocationContext.CreateBlockStream((ulong)objectData.LongLength);
stream.Write(objectData);
// 2) We may need to delete object from B+ stream.
Block block = service.Read(BlockType.TypedStreamHeader, typedStreamHeader);
fixed(byte *p = block.Data)
{
TypedStreamHeader *header = (TypedStreamHeader *)p;
// We may need to delete link.
if (header->ObjectsAddress != 0)
{
BlockStream objToDelete = BlockStream.FromBase(header->ObjectsAddress, service);
objToDelete.Deallocate();
}
// 3) We must relink it to out block.
header->ObjectsAddress = stream.BaseAddress;
header->ObjectSize = (ulong)objectData.LongLength;
}
service.Write(BlockType.TypedStreamHeader, typedStreamHeader, block);
}
public unsafe void Execute(uint stage, SharpMedia.Database.Physical.Journalling.IService service)
{
// 1) We first delete header node entry.
Block versionNodeBlock = service.Read(BlockType.NodeHeaderBlock, nodeVersionAddress);
ulong tsHeaderAddress = NodeVersionHelper.RemoveTypedStream(tsToDeleteIndex, versionNodeBlock);
// 2) We delete all objects.
Block tsHeader = service.Read(BlockType.TypedStreamHeader, tsHeaderAddress);
fixed(byte *p = tsHeader.Data)
{
TypedStreamHeader *header = (TypedStreamHeader *)p;
if ((header->Options & StreamOptions.SingleObject) != 0)
{
BlockStream stream = BlockStream.FromBase(header->ObjectsAddress, service);
stream.Deallocate();
}
else
{
// We have to delete whole link.
BPlusTree tree = new BPlusTree(header->ObjectsAddress);
List <ObjectInfo> all = tree.ListAll(service);
foreach (ObjectInfo info in all)
{
BlockStream stream = BlockStream.FromBase(info.Address, service);
stream.Deallocate();
}
// Make sure we get rid of tree.
tree.DeallocateTree(service);
}
}
// 3) We delete typed stream.
service.DeAllocate(tsHeaderAddress);
}