public void DeleteFromIndexRecord(BTreeOnHeapIndex index, HeapID heapID)
{
int recordIndex = index.GetIndexOfRecord(heapID);
index.Records.RemoveAt(recordIndex);
if (index.Records.Count > 0)
{
// will always replace in place (smaller size)
ReplaceHeapItem(index.HeapID, index.GetBytes());
}
else
{
if (index.ParentIndex == null)
{
// this is the root node
BTreeHeader.hidRoot = HeapID.EmptyHeapID;
BTreeHeader.bIdxLevels = 0;
UpdateBTreeHeader();
}
else
{
DeleteFromIndexRecord(index.ParentIndex, index.HeapID);
}
}
}
public void UpdateIndexRecord(BTreeOnHeapIndex index, HeapID oldHeapID, HeapID newHeapID, byte[] newKey)
{
int recordIndex = index.GetIndexOfRecord(oldHeapID);
index.Records[recordIndex].hidNextLevel = newHeapID;
index.Records[recordIndex].key = newKey;
// will always replace in place (same size)
ReplaceHeapItem(index.HeapID, index.GetBytes());
if (recordIndex == 0 && index.ParentIndex != null)
{
UpdateIndexRecord(index.ParentIndex, index.HeapID, index.HeapID, index.NodeKey);
}
}