/// <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(NeoDatis.Btree.IBTreeNode parent, NeoDatis.Btree.IBTreeNode
node2Split, int childIndex)
{
// BTreeValidator.validateNode(parent, parent == root);
// BTreeValidator.validateNode(node2Split, false);
// 1
NeoDatis.Btree.IKeyAndValue median = node2Split.GetMedian();
// 2
parent.SetKeyAndValueAt(median, childIndex, true, true);
// 3
NeoDatis.Btree.IBTreeNode rightPart = node2Split.ExtractRightPart();
// 4
parent.SetChildAt(rightPart, childIndex + 1);
parent.SetChildAt(node2Split, childIndex);
parent.IncrementNbChildren();
persister.SaveNode(parent);
persister.SaveNode(rightPart);
persister.SaveNode(node2Split);
if (NeoDatis.Btree.Tool.BTreeValidator.IsOn())
{
NeoDatis.Btree.Tool.BTreeValidator.ValidateNode(parent, parent == root);
NeoDatis.Btree.Tool.BTreeValidator.ValidateNode(rightPart, false);
NeoDatis.Btree.Tool.BTreeValidator.ValidateNode(node2Split, false);
}
}