void LeafNode::mergeNode(FatherNode* parentNode, FatherNode* childNode, int keyIndex) {
for (int i = 0; i < childNode->getKeyNum(); ++i) {
insert(childNode->getKeyValue(i), ((LeafNode*)childNode)->getData(i));
}
setRightSibling(((LeafNode*)childNode)->getRightSibling());
parentNode->removeKey(keyIndex, keyIndex + 1);
}
void CLeafNode::mergeChild(CNode* parentNode, CNode* childNode, int keyIndex)
{
// 合并数据
for (int i=0; i<childNode->getKeyNum(); ++i)
{
insert(childNode->getKeyValue(i), ((CLeafNode*)childNode)->getData(i));
}
setRightSibling(((CLeafNode*)childNode)->getRightSibling());
//父节点删除index的key，
parentNode->removeKey(keyIndex, keyIndex+1);
}
void LeafNode::splitNode(FatherNode* parentNode, int childIndex) {
LeafNode* newNode = new LeafNode();
setKeyNum(MIN_LEAF);
newNode->setKeyNum(MIN_LEAF + 1);
newNode->setRightSibling(getRightSibling());
setRightSibling(newNode);
newNode->setLeftSibling(this);
int i;
for (i = 0; i < MIN_LEAF + 1; ++i) {
newNode->setKeyValue(i, m_KeyValues[i + MIN_LEAF]);
}
for (i = 0; i < MIN_LEAF + 1; ++i) {
newNode->setData(i, m_Datas[i + MIN_LEAF]);
}
((InternalNode*)parentNode)->insert(childIndex, childIndex + 1, m_KeyValues[MIN_LEAF], newNode);
}
void CLeafNode::split(CNode* parentNode, int childIndex)
{
CLeafNode* newNode = new CLeafNode();//分裂后的右节点
setKeyNum(MINNUM_LEAF);
newNode->setKeyNum(MINNUM_LEAF+1);
newNode->setRightSibling(getRightSibling());
setRightSibling(newNode);
newNode->setLeftSibling(this);
int i;
for (i=0; i<MINNUM_LEAF+1; ++i)// 拷贝关键字的值
{
newNode->setKeyValue(i, m_KeyValues[i+MINNUM_LEAF]);
}
for (i=0; i<MINNUM_LEAF+1; ++i)// 拷贝数据
{
newNode->setData(i, m_Datas[i+MINNUM_LEAF]);
}
((CInternalNode*)parentNode)->insert(childIndex, childIndex+1, m_KeyValues[MINNUM_LEAF], newNode);
}
/*叶子节点*/
LeafNode::LeafNode() :FatherNode() {
setType(LEAF);
setLeftSibling(NULL);
setRightSibling(NULL);
}
// CLeafNode
CLeafNode::CLeafNode():CNode() {
setType(LEAF);
setLeftSibling(NULL);
setRightSibling(NULL);
}
