// Commented by Olivier 05/11/2007
// persister.flush();
/// <summary>
/// <pre>1 take median element
/// 2 insert the median in the parent (shifting necessary elements)
/// 3 create a new node with right part elements (moving keys and values and children)
/// 4 set this new node as a child of parent</pre>
/// </summary>
public virtual void Split(IBTreeNode parent, IBTreeNode node2Split, int childIndex)
{
// BTreeValidator.validateNode(parent, parent == root);
// BTreeValidator.validateNode(node2Split, false);
// 1
var medianValue = node2Split.GetMedian();
// 2
parent.SetKeyAndValueAt(medianValue, childIndex, true, true);
// 3
var rightPartTreeNode = node2Split.ExtractRightPart();
// 4
parent.SetChildAt(rightPartTreeNode, childIndex + 1);
parent.SetChildAt(node2Split, childIndex);
parent.IncrementNbChildren();
_persister.SaveNode(parent);
_persister.SaveNode(rightPartTreeNode);
_persister.SaveNode(node2Split);
if (!OdbConfiguration.IsBTreeValidationEnabled())
{
return;
}
BTreeValidator.ValidateNode(parent, parent == _root);
BTreeValidator.ValidateNode(rightPartTreeNode, false);
BTreeValidator.ValidateNode(node2Split, false);
}