/// <summary>
/// RegisterAdd will be called whenever a "new" block is allocated.
/// Don't save block at this point as changes not saved yet.
/// </summary>
/// <param name="collection"></param>
/// <param name="blockAddress"></param>
/// <param name="blockSize"></param>
protected internal override void RegisterAdd(CollectionOnDisk collection, long blockAddress, int blockSize)
{
if (IsTransactionStore(collection))
{
((TransactionBase)collection.ParentTransactionLogger).RegisterAdd(collection, blockAddress, blockSize);
return;
}
if (LogCollection == null)
{
return;
}
RecordKey key = CreateKey(collection, blockAddress);
//** Check if Block is in Growth Segments
if (RegionLogic.IsSegmentInStore(_fileGrowthStore, key, blockSize) ||
RegionLogic.IsSegmentInStore(_recycledSegmentsStore, key, blockSize))
{
if (_inCommit == 0)
{
TrackModification(collection.GetTopParent());
}
return;
}
RegisterAdd(_addBlocksStore, _fileGrowthStore, _recycledSegmentsStore, collection, blockAddress,
blockSize, false);
if (_inCommit == 0)
{
TrackModification(collection.GetTopParent());
}
}
/// <summary>
/// Check whether a block is a newly added block or is in new segment or recycle store.
/// </summary>
/// <param name="addStore"></param>
/// <param name="fileGrowthStore"></param>
/// <param name="recycledCollectionStore"></param>
/// <param name="key"></param>
/// <param name="blockSize"></param>
/// <param name="checkIfInGrowthSegments"></param>
/// <returns>true if block is either new, in new segment or in recycle store, false otherwise</returns>
internal static void RegisterAdd(
Collections.Generic.ISortedDictionary <RecordKey, long> addStore,
Collections.Generic.ISortedDictionary <RecordKey, long> fileGrowthStore,
Collections.Generic.ISortedDictionary <RecordKey, long> recycledCollectionStore,
RecordKey key, int blockSize, bool checkIfInGrowthSegments)
{
//** Check if Block is in Growth Segments
if (checkIfInGrowthSegments &&
(RegionLogic.IsSegmentInStore(fileGrowthStore, key, blockSize) ||
RegionLogic.IsSegmentInStore(recycledCollectionStore, key, blockSize)))
{
return;
}
//** Add Block to AddStore for use on Rollback...
if (!addStore.ContainsKey(key))
{
short passCount = 0;
//** Detect and merge contiguous blocks
if (!addStore.MovePrevious())
{
addStore.MoveFirst();
}
while (!addStore.EndOfTree())
{
var de = addStore.CurrentEntry;
RecordKey k2 = de.Value.Key;
long i = de.Value.Value;
if (k2.ServerSystemFilename == key.ServerSystemFilename &&
k2.Filename == key.Filename &&
k2.CollectionName == key.CollectionName)
{
if (key.Address + blockSize == k2.Address)
{
long newSize = i + blockSize;
addStore.Remove(de.Value.Key);
k2.Address = key.Address;
addStore.Add(k2, newSize);
return;
}
if (k2.Address + i == key.Address)
{
addStore.CurrentValue = i + blockSize;
return;
}
if (key.Address >= k2.Address && key.Address + blockSize <= k2.Address + i)
{
//** if block is inclusive, don't do anything...
return;
}
}
else if (++passCount >= 2)
{
break;
}
addStore.MoveNext();
}
addStore.Add(key, blockSize);
}
}
protected internal override void RegisterRemove(CollectionOnDisk collection, long blockAddress, int blockSize)
{
if (IsTransactionStore(collection))
{
((TransactionBase)collection.ParentTransactionLogger).RegisterRemove(collection, blockAddress, blockSize);
return;
}
if (LogCollection == null)
{
return;
}
if (_inCommit == 0)
{
TrackModification(collection.GetTopParent());
}
// object o = 90; // todo: remove return when ready...
return;
// Check if Block is in Growth, RecycledCollection, Add, Recycled blocks segments...
RecordKey key = CreateKey(collection, blockAddress);
if (RegionLogic.IsSegmentInStore(_fileGrowthStore, key, blockSize) ||
RegionLogic.IsSegmentInStore(_recycledSegmentsStore, key, blockSize) ||
RegionLogic.IsSegmentInStore(_addBlocksStore, key, blockSize))
{
return;
}
// check if block is in updated blocks...
if (IsInUpdatedBlocks(collection, blockAddress, blockSize))
{
return;
}
AddMerge(_recycledBlocksStore, key, blockSize);
if (_inCommit == 0)
{
TrackModification(collection.GetTopParent());
}
}
/// <summary>
/// Check whether a block is:
/// - a newly added block
/// - in new segment
/// - in recycled store
/// - in updated blocks
/// </summary>
/// <param name="addStore"></param>
/// <param name="fileGrowthStore"></param>
/// <param name="recycledCollectionStore"></param>
/// <param name="key"></param>
/// <param name="blockSize"></param>
/// <param name="checkIfInGrowthSegments"></param>
/// <returns>true if block is either new, in new segment or in recycle store, false otherwise</returns>
internal static void RegisterAdd(
Collections.Generic.ISortedDictionary <RecordKey, long> addStore,
Collections.Generic.ISortedDictionary <RecordKey, long> fileGrowthStore,
Collections.Generic.ISortedDictionary <RecordKey, long> recycledCollectionStore,
RecordKey key, int blockSize, bool checkIfInGrowthSegments)
{
/* todo: complete the story for: RegisterAdd, ...Save, ...Remove, ...Recycle, ...FileGrowth
* Logic table:
* Add Save (Update)/Remove Recycle FileGrowth
* - FileGrowth blocks can be deleted, then re-allocated for Add
* - Block can be allocated for Add, Deleted(will create Updated blocks) if item is deleted, then re-Allocated for Add.*/
// Check if Block is in Growth, RecycledCollection, Recycled blocks segments...
if (checkIfInGrowthSegments)
{
if (RegionLogic.IsSegmentInStore(fileGrowthStore, key, blockSize) ||
RegionLogic.IsSegmentInStore(recycledCollectionStore, key, blockSize))
{
return;
}
}
AddMerge(addStore, key, blockSize);
}
