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IndexManager.cpp
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#include"IndexManager.h"
extern int count1;
void Branch::insert(IndexBranch node) {
recordNum++;
list<IndexBranch>::iterator i = nodelist.begin();
if (this->IntorString == 0) {
if (this->StringorFloat == 1) {
if (nodelist.size() == 0)
nodelist.insert(i, node);
else {
for (i = nodelist.begin(); i != nodelist.end(); i++)
if ((*i).key > node.key) break;
nodelist.insert(i, node);
}
}
else if (this->StringorFloat == 0) {
if (nodelist.size() == 0)
nodelist.insert(i, node);
else {
for (i = nodelist.begin(); i != nodelist.end(); i++)
if (StringtoFloat((*i).key) > StringtoFloat(node.key)) break;
nodelist.insert(i, node);
}
}
}
if (this->IntorString == 1) {
if (nodelist.size() == 0)
nodelist.insert(i, node);
else {
for (i = nodelist.begin(); i != nodelist.end(); i++)
if (StringtoInt((*i).key) > StringtoInt(node.key)) break;
nodelist.insert(i, node);
}
}
}
void IndexManager::changefather(Index indexinfor, Branch Tbranch) {
int blockoffset;
int blocknum;
Branch getb;
Leaf getl;
Branch cb;
Leaf cl;
cb.createBranch(0, indexinfor.columnLength, indexinfor.type);
cl.createLeaf(indexinfor.columnLength, indexinfor.type);
getb.createBranch(0, indexinfor.columnLength, indexinfor.type);
getl.createLeaf(indexinfor.columnLength, indexinfor.type);
list<IndexBranch>::iterator i;
int j = Tbranch.nodelist.size();
int k;
i = Tbranch.nodelist.begin();
for (k = 1; k <= j; k++, i++) {
getb = cb;
getl = cl;
blocknum = Buffer.malloc_block(indexinfor.fileoffset, (*i).ptrChild);
Buffer.b[blocknum].isWritten = 1;
//Buffer.b[blocknum].block[0] = 1;
if (Buffer.b[blocknum].block[4091] == 'B') {
MemorytoBranch(Buffer.b[blocknum].block, getb);
getb.ptrFather = Tbranch.blockNum;
translateBranch(Buffer.b[blocknum].block, getb);
}
else if (Buffer.b[blocknum].block[4091] == 'L') {
MemorytoLeaf(Buffer.b[blocknum].block, getl);
getl.ptrFather = Tbranch.blockNum;
translateLeaf(Buffer.b[blocknum].block, getl);
}
}
blocknum = Buffer.malloc_block(indexinfor.fileoffset, Tbranch.lastChild);
Buffer.b[blocknum].isWritten = 1;
getb = cb;
getl = cl;
if (Buffer.b[blocknum].block[4091] == 'B') {
MemorytoBranch(Buffer.b[blocknum].block, getb);
getb.ptrFather = Tbranch.blockNum;
translateBranch(Buffer.b[blocknum].block, getb);
}
else if (Buffer.b[blocknum].block[4091] == 'L') {
MemorytoLeaf(Buffer.b[blocknum].block, getl);
getl.ptrFather = Tbranch.blockNum;
translateLeaf(Buffer.b[blocknum].block, getl);
}
}
IndexBranch Branch::pop() {
recordNum--;
IndexBranch tmpt = nodelist.back();
nodelist.pop_back();
return tmpt;
}
IndexBranch Branch::getfront() {
return nodelist.front();
}
void Branch::clearall() {
while (nodelist.size() != 0)
nodelist.pop_back();
}
Branch::Branch(char memory[], int lengthOFcolumn, int type) {
//this->isRoot = IsRoot;
if (type == 11)
this->StringorFloat = 0;
else if (type == 12)
this->StringorFloat = 1;
this->columnLength = lengthOFcolumn;
MemorytoBranch(memory, *this);
int totallength = LENGTHOFPOINTER;
totallength += this->columnLength;
this->Max = 4081 / totallength;
}
void Leaf::insert(IndexLeaf node) {
recordNum++;
list<IndexLeaf>::iterator i = nodelist.begin();
if (this->IntorString == 0) {
if (this->StringorFloat == 1) {
if (nodelist.size() == 0)
nodelist.insert(i, node);
else {
for (i = nodelist.begin(); i != nodelist.end(); i++)
if ((*i).key > node.key) break;
nodelist.insert(i, node);
}
}
else if (this->StringorFloat == 0) {
if (nodelist.size() == 0)
nodelist.insert(i, node);
else {
for (i = nodelist.begin(); i != nodelist.end(); i++)
if (StringtoFloat((*i).key) > StringtoFloat(node.key)) break;
nodelist.insert(i, node);
}
}
}
if (this->IntorString == 1) {
if (nodelist.size() == 0) {
nodelist.insert(i, node);
}
else {
for (i = nodelist.begin(); i != nodelist.end(); i++)
if (StringtoInt((*i).key) > StringtoInt(node.key)) break;
nodelist.insert(i, node);
}
}
}
IndexLeaf Leaf::pop() {
recordNum--;
IndexLeaf tmpt = nodelist.back();
nodelist.pop_back();
return tmpt;
}
IndexLeaf Leaf::getfront() {//this is the smallest of all the keys of the list
return nodelist.front();
}
void Leaf::clearall() {
while (nodelist.size() != 0)
nodelist.pop_back();
}
Leaf::Leaf(char memory[], int lengthOFcolumn, int type) {
if (type == 11)
this->StringorFloat = 0;
else if (type == 12)
this->StringorFloat = 1;
int length = LENGTHOFPOINTER;
this->columnLength = lengthOFcolumn;
MemorytoLeaf(memory, *this);
int totallength = this->columnLength + length;
this->Max = 4078 / totallength;
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
void IndexManager::createIndex(Index& indexinfor, IndexColumn DataofIndex) {
Branch root;
root.createBranch(1, indexinfor.columnLength, indexinfor.type);
/*string Data;
int Nint = INT;
int Nfloat = FLOAT;
int Nchar = CHAR;
int length = LENGTHOFPOINTER;*/
int blocknum;
int i;
/*root.columnLength = indexinfor.columnLength;
root.lastChild = Buffer.create_newblock_index(indexinfor.fileoffset);
blocknum = Buffer.malloc_block(indexinfor.fileoffset, root.lastChild);
InttoChar(indexinfor.fileoffset, 0, length, Buffer.b[blocknum]->block);
InttoChar(0, 4, length, Buffer.b[blocknum]->block);
InttoChar(0, 4087, length, Buffer.b[blocknum]->block);
InttoChar(0, 4092, length, Buffer.b[blocknum]->block);
if (tableinfor.attriNum == Nint)
root.IntorString = 1;
else if (tableinfor.attriNum == Nfloat || tableinfor.attriNum == Nchar)
root.isRoot = 'R';
root.recordNum = 0;
blocknum = Buffer.malloc_block(indexinfor.fileoffset, indexinfor.blockoffset);
translateBranch(Buffer.b[blocknum]->block, root);*/
root.blockNum = indexinfor.blockoffset;
for (i = 0; i < DataofIndex.rows.size(); i++)
insertValue(root, DataofIndex.rows[i], indexinfor);
blocknum = Buffer.malloc_block(indexinfor.fileoffset, indexinfor.blockoffset);
Buffer.b[blocknum].isWritten = 1;
translateBranch(Buffer.b[blocknum].block, root);
}
void IndexManager::translateLeaf(char neicun[], Leaf needt) {
int i, length, totallength, k, j, keynumber, intlength;
length = LENGTHOFPOINTER;
//intlength = INT;
totallength = 2 * length + needt.columnLength;
InttoChar(needt.ptrFather, 0, length, neicun);
InttoChar(needt.recordNum, 4, length, neicun);
if (needt.IntorString == 1) {
neicun[2 * length] = 'I';
for (i = 0; i < needt.recordNum; i++) {
InttoChar(needt.getfront().offsetinBlock, 2 * length + 1 + i*totallength, length, neicun);
InttoChar(StringtoInt(needt.getfront().key), 2 * length + 1 + i*totallength + length, needt.columnLength, neicun);
InttoChar(needt.getfront().offsetinFile, 2 * length + 1 + i*totallength + 2 * length, length, neicun);
needt.writeclear();
}
}
else {
neicun[2 * length] = 'S';
for (i = 0; i < needt.recordNum; i++) {
InttoChar(needt.getfront().offsetinBlock, 2 * length + 1 + i*totallength, length, neicun);
for (j = 2 * length + 1 + i*totallength + length, k = 0; k < needt.columnLength; k++, j++) {
neicun[j] = needt.getfront().key[k];
}
InttoChar(needt.getfront().offsetinFile, 2 * length + 1 + i*totallength + length + needt.columnLength, length, neicun);
needt.writeclear();
}
}
InttoChar(needt.lastSibling, 4087, length, neicun);
InttoChar(needt.nextSibling, 4092, length, neicun);
neicun[4091] = 'L';
}
void IndexManager::translateBranch(char neicun[], Branch needt) {
int i, length, totallength, k, j, keynumber, intlength;
length = LENGTHOFPOINTER;
//intlength = INT;
if (needt.isRoot == 1)
neicun[4090] = 'R';
else
neicun[4090] = 'N';
totallength = length + needt.columnLength;
InttoChar(needt.ptrFather, 0, length, neicun);
InttoChar(needt.recordNum, 4, length, neicun);
if (needt.IntorString == 1) {
neicun[2 * length] = 'I';
for (i = 0; i < needt.recordNum; i++) {
InttoChar(needt.getfront().ptrChild, 2 * length + 1 + i*totallength, length, neicun);
InttoChar(StringtoInt(needt.getfront().key), 2 * length + 1 + i*totallength + length, needt.columnLength, neicun);
needt.writeclear();
}
}
else {
neicun[2 * length] = 'S';
for (i = 0; i < needt.recordNum; i++) {
InttoChar(needt.getfront().ptrChild, 2 * length + 1 + i*totallength, length, neicun);
for (j = 2 * length + 1 + i*totallength + length, k = 0; k < needt.columnLength; k++, j++) {
neicun[j] = needt.getfront().key[k];
//needt.writeclear();
}
needt.writeclear();
}
}
InttoChar(needt.lastChild, 4092, length, neicun);
neicun[4091] = 'B';
}
void IndexManager::InttoChar(int number, int startpos, int length, char neicun[]) {
int i, flag, str;
str = startpos;
if (number < 0) {
number = -number;
flag = -1;
}
else
flag = 1;
for (i = 0; i < length; i++) {
startpos--;
neicun[startpos + length] = number % 256;
number /= 256;
}
if (flag == -1)
neicun[str] = neicun[str] + 128;
}
int IndexManager::StringtoInt(string key) {
int i, number;
i = 0;
number = 0;
int flag = -1;
if (key[0] == '-') {
i++;
flag = -1;
}
else
flag = 1;
for (; i < key.length(); i++) {
number = number * 10 + key.at(i) - '0';
}
return number * flag;
}
string IndexManager::minkey(Index indexinfor, Branch Tbranch) {
int next;
int block;
Branch tbranch;
Branch cbranch;
Leaf tleaf;
tbranch.createBranch(0, indexinfor.columnLength, indexinfor.type);
cbranch = tbranch;
tleaf.createLeaf(indexinfor.columnLength, indexinfor.type);
next = (*Tbranch.nodelist.begin()).ptrChild;
block = Buffer.malloc_block(indexinfor.fileoffset, next);
while (Buffer.b[block].block[4091] != 'L') {
tbranch = cbranch;
MemorytoBranch(Buffer.b[block].block, tbranch);
next = (*tbranch.nodelist.begin()).ptrChild;
block = Buffer.malloc_block(indexinfor.fileoffset, next);
}
MemorytoLeaf(Buffer.b[block].block, tleaf);
return (*tleaf.nodelist.begin()).key;
}
void IndexManager::index_insertValue(Index indexinfor, IndexColumn data){
IndexRow insertdata;
int block, fileoffset;
insertdata = data.rows[0];
Branch root;
root.createBranch(1, indexinfor.columnLength, indexinfor.type);
fileoffset = indexinfor.blockoffset / 1000000;
block = Buffer.malloc_block(fileoffset, indexinfor.blockoffset);
MemorytoBranch(Buffer.b[block].block, root);
insertValue(root, insertdata, indexinfor);
translateBranch(Buffer.b[block].block, root);
Buffer.b[block].isWritten = 1;
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~//注意检查最后一个lastchild！！转移，因为每个都要有才行
void IndexManager::insertValue(Branch& Searchnode, IndexRow dataRecord, Index& indexinfor) {
//Branch root(1);
bool *valid;
valid = new bool;
*valid = 0;
int *ptrChild;
ptrChild = new int;
*ptrChild = 0;
int Fp = indexinfor.blockoffset;
IndexBranch tbranch1, tbranch2;
Branch Tbranch1, Tbranch2;
Tbranch1.createBranch(0, indexinfor.columnLength, indexinfor.type);
Tbranch2.createBranch(0, indexinfor.columnLength, indexinfor.type);
string formal;
int i, block1, blockoffset1, block2, blockoffset2;
list<IndexBranch>::iterator j;
IndexLeaf readyinsert(dataRecord.key, dataRecord.fileoffset, dataRecord.blockoffset);
insertvalue(Searchnode, readyinsert, indexinfor, Fp, valid, ptrChild, formal);
if (*valid) {
tbranch1.key = formal;
tbranch1.ptrChild = *ptrChild;
if (Searchnode.Max > Searchnode.recordNum) {
Searchnode.insert(tbranch1);
}
else if (Searchnode.Max == Searchnode.recordNum) {//lastchild可能有变动，维护好lastchild
j = Searchnode.nodelist.begin();
block1 = Buffer.create_newblock_index(indexinfor);
blockoffset1 = Buffer.malloc_block(indexinfor.fileoffset, block1);
block2 = Buffer.create_newblock_index(indexinfor);
blockoffset2 = Buffer.malloc_block(indexinfor.fileoffset, block2);
Buffer.b[blockoffset1].isWritten = 1;
Buffer.b[blockoffset2].isWritten = 1;
for (i = 1; i <= Searchnode.Max / 2 + 1; i++, j++) {
Tbranch1.insert((*j));
}
for (; i <= Searchnode.Max; i++, j++) {
Tbranch2.insert((*j));
}
if (comparefi(indexinfor.type, (*Tbranch2.nodelist.begin()).key, tbranch1.key) > 0) {
Tbranch1.insert(tbranch1);
}
else
Tbranch2.insert(tbranch1);
Tbranch1.lastChild = Tbranch1.pop().ptrChild;//维护lastchild
Tbranch2.lastChild = Searchnode.lastChild;
j = Tbranch2.nodelist.begin();
tbranch2.key = minkey(indexinfor, Tbranch2);
tbranch2.ptrChild = block1;
Searchnode.clearall();
Searchnode.insert(tbranch2);
Searchnode.lastChild = block2;
Tbranch1.ptrFather = indexinfor.blockoffset;
Tbranch2.ptrFather = indexinfor.blockoffset;
translateBranch(Buffer.b[blockoffset1].block, Tbranch1);
translateBranch(Buffer.b[blockoffset2].block, Tbranch2);
Tbranch1.blockNum = block1;
Tbranch2.blockNum = block2;
//接下来每个孩子的ptrchild都要改成当前的值
/*for (int w = 1000001; w <= 1000030; w++) {
int xy = 1;
Leaf Tleaf;
Tleaf.createLeaf(indexinfor.columnLength, indexinfor.type);
int d = Buffer.malloc_block(xy, w);
MemorytoLeaf(Buffer.b[d].block, Tleaf);
}*/
changefather(indexinfor, Tbranch1);
changefather(indexinfor, Tbranch2);
Searchnode.recordNum = 1;
}
}
//int block;
//block = Buffer.malloc_block(indexinfor.fileoffset, indexinfor.blockoffset);
//MemorytoBranch(Buffer.b[block]->block, root);
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
void IndexManager::insertvalue(Branch& Searchnode, IndexLeaf& data, Index& indexinfor, int Fp, bool* valid, int* ptrChild, string& ckey) {//这个valid是说我现在返回的多的这个节点是否是有效的
int block1, block2, blockoffset1, blockoffset2, blockoffsetnext, i;
int *nextptrch;
nextptrch = new int;
*nextptrch = 0;
int Rmax = Searchnode.Max / 2;
int fp;
string nkey;
bool *last;
bool *next;
last = new bool;
next = new bool;
*last = 1;
*next = 0;
Leaf Tleaf1, Tleaf2;
IndexBranch tbranch1, tbranch2;
Branch Tbranch1, Tbranch2, Tbranch3;
Tbranch1.createBranch(0, indexinfor.columnLength, indexinfor.type);
Tbranch2.createBranch(0, indexinfor.columnLength, indexinfor.type);
Tbranch3.createBranch(0, indexinfor.columnLength, indexinfor.type);
list<IndexBranch>::iterator j;
list<IndexBranch>::iterator location;
//int typeint, typechar, typefloat;
//typeint = INT;
//typechar = CHAR;
//typefloat = FLOAT;
if (Searchnode.isRoot == 1 && Searchnode.lastChild == 0) {
block1 = Buffer.create_newblock_index(indexinfor);
//tbranch1.key = data.key;
//tbranch1.ptrChild = block1;
indexinfor.fileoffset = block1 / MAX_NUMBER_BLOCK;
blockoffset1 = Buffer.malloc_block(indexinfor.fileoffset, block1);
Tleaf1.createLeaf(indexinfor.columnLength, indexinfor.type);
Tleaf1.insert(data);
Tleaf1.ptrFather = indexinfor.blockoffset;
Buffer.b[blockoffset1].isWritten = 1;
translateLeaf(Buffer.b[blockoffset1].block, Tleaf1);
//blockoffset1 = Buffer.malloc_block(indexinfor.fileoffset, indexinfor.blockoffset);
Searchnode.lastChild = block1;
//translateBranch(Buffer.b[blockoffset1].block, Searchnode);
}
else {
location = SearchlocaB(Searchnode, data, next);
if (*next)
blockoffset1 = (*location).ptrChild;
else
blockoffset1 = Searchnode.lastChild;
indexinfor.fileoffset = blockoffset1 / 1000000;
block1 = Buffer.malloc_block(indexinfor.fileoffset, blockoffset1);
Buffer.b[block1].isWritten = 1;
if (Buffer.b[block1].block[4091] == 'B') {
Tbranch1.createBranch(0, indexinfor.columnLength, indexinfor.type);
MemorytoBranch(Buffer.b[block1].block, Tbranch1);
Tbranch1.blockNum = blockoffset1;
fp = Tbranch1.blockNum;
insertvalue(Tbranch1, data, indexinfor, fp, next, nextptrch, nkey);
if (*(next)) {
tbranch1.key = nkey;
tbranch1.ptrChild = *nextptrch;
if (Tbranch1.Max > Tbranch1.recordNum) {
*valid = 0;
Tbranch1.insert(tbranch1);
translateBranch(Buffer.b[block1].block, Tbranch1);
}
else if (Tbranch1.Max == Tbranch1.recordNum) {
/*if (Searchnode.isRoot == 1) {
*valid = 1;
*ptrChild = *next;
ckey = nkey;*/
/*j = Searchnode.nodelist.begin();
block1 = Buffer.create_newblock_index(indexinfor);
blockoffset1 = Buffer.malloc_block(indexinfor.fileoffset, block1);
block2 = Buffer.create_newblock_index(indexinfor);
blockoffset2 = Buffer.malloc_block(indexinfor.fileoffset, block2);
for (i = 1; i <= Searchnode.Max / 2 + 1; i++, j++) {
Tbranch1.insert((*j));
}
for (; i <= Searchnode.Max; i++, j++) {
Tbranch2.insert((*j));
}
Tbranch2.insert(tbranch1);
j = Tbranch2.nodelist.begin();
tbranch2.key = (*j).key;
tbranch2.ptrChild = (*j).ptrChild;
Searchnode.clearall();
Searchnode.insert(tbranch2);
Searchnode.lastChild = block2;*/
/*}
else {
*valid = 1;
for (int k = 1; k <= Rmax; k++) {
tbranch2 = Searchnode.pop();
Tbranch1.insert(tbranch2);
}
Tbranch1.insert(tbranch1);
j = Tbranch1.nodelist.begin();
*ptrChild = (*j).ptrChild;
ckey = (*j).key;
}*/
j = Tbranch1.nodelist.begin();
block2 = Buffer.create_newblock_index(indexinfor);
blockoffset2 = Buffer.malloc_block(indexinfor.fileoffset, block2);
Buffer.b[blockoffset2].isWritten = 1;
for (i = 1; i <= Tbranch1.Max / 2 + 1; i++) {
j = Tbranch1.nodelist.begin();
Tbranch2.insert((*j));
Tbranch1.nodelist.pop_front();
Tbranch1.recordNum--;
}
if (comparefi(indexinfor.type, (*Tbranch2.nodelist.begin()).key, tbranch1.key) > 0) {
Tbranch1.insert(tbranch1);
}
else
Tbranch2.insert(tbranch1);
//Tbranch1.lastChild = Tbranch1.pop().ptrChild;//维护lastchild
Tbranch2.lastChild = Tbranch2.pop().ptrChild;
j = Tbranch2.nodelist.begin();
*valid = 1;
*ptrChild = block2;
ckey = minkey(indexinfor, Tbranch1);
Tbranch2.ptrFather = Tbranch1.ptrFather;//给父亲赋值
translateBranch(Buffer.b[block1].block, Tbranch1);
translateBranch(Buffer.b[blockoffset2].block, Tbranch2);
Tbranch2.blockNum = block2;
//接下来每个孩子的ptrchild都要改成当前的值
//changefather(indexinfor, Tbranch1);
changefather(indexinfor, Tbranch2);
}
}
else
*valid = 0;
}
else if (Buffer.b[block1].block[4091] == 'L') {
Tleaf1.createLeaf(indexinfor.columnLength, indexinfor.type);
MemorytoLeaf(Buffer.b[block1].block, Tleaf1);
Tleaf1.blockNum = blockoffset1;
insertvalueL(Tleaf1, data, indexinfor, next, nextptrch, nkey);
translateLeaf(Buffer.b[block1].block, Tleaf1);
Buffer.b[block1].isWritten = 1;
if (*(next)) {
*valid = 1;
*ptrChild = *nextptrch;
ckey = nkey;
}
else
*valid = 0;
}
}
/*else if (Searchnode.Max == Searchnode.recordNum) {
if (Searchnode.isRoot == 1) {
j = Searchnode.nodelist.begin();
block1 = Buffer.create_newblock_index(indexinfor.fileoffset);
blockoffset1 = Buffer.malloc_block(indexinfor.fileoffset, block1);
block2 = Buffer.create_newblock_index(indexinfor.fileoffset);
blockoffset2 = Buffer.malloc_block(indexinfor.fileoffset, block2);
for (i = 1; i < Searchnode.Max / 2; i++, j++) {
Tbranch1.insert((*j));
}
tbranch1.key = (*j).key;
tbranch1.ptrChild = block1;
if (comparefi(indexinfor.type, (*j).key, data.key) > 0) {
//insertvalue()
}
for (; i <= Searchnode.Max; i++, j++) {
Tbranch2.insert((*j));
}
Searchnode.clearall();
Searchnode.insert(tbranch1);
Searchnode.lastChild = block2;
}
else {
*valid = 1;
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
}
}
else {
*valid = 0;
list<IndexBranch>::iterator i = SearchlocaB(Searchnode, data, last);
if (*last)
blockoffsetnext = Searchnode.lastChild;
else blockoffsetnext = (*i).ptrChild;
block1 = Buffer.malloc_block(indexinfor.fileoffset, blockoffsetnext);
if (Buffer.b[block1]->block[4091] == 'B') {
MemorytoBranch(Buffer.b[block1]->block, Tbranch1);
}
else if (Buffer.b[block1]->block[4091] == 'L') {
MemorytoLeaf(Buffer.b[block1]->block, Tleaf1);
if (Tleaf1.Max == Tleaf1.recordNum) {
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
}
else {
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
}
}
(*i).ptrChild;
}*/
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
void IndexManager::insertvalueL(Leaf& SearchnodeL, IndexLeaf& data, Index& indexinfor, bool* valid, int* prrChild, string& ckey) {//有分裂的话valid变成1返回地址
int blockoffset;
int blocknum, blocknum1;
Leaf tleaf, ztleaf;
Leaf tranleaf;
IndexLeaf get;
int trans = SearchnodeL.Max / 2;
if (SearchnodeL.Max == SearchnodeL.recordNum) {
*valid = 1;
tleaf.columnLength = indexinfor.columnLength;
tleaf.IntorString = SearchnodeL.IntorString;
tleaf.StringorFloat = SearchnodeL.StringorFloat;
tleaf.ptrFather = SearchnodeL.ptrFather;
blockoffset = Buffer.create_newblock_index(indexinfor);
blocknum = Buffer.malloc_block(indexinfor.fileoffset, blockoffset);
tleaf.nextSibling = SearchnodeL.nextSibling;
tleaf.lastSibling = blockoffset;
SearchnodeL.nextSibling = SearchnodeL.blockNum;
SearchnodeL.lastSibling = SearchnodeL.lastSibling;
for (int i = 0; i < trans; i++) {
get = SearchnodeL.pop();
tleaf.insert(get);
}
//tleaf.insert(data);
if (comparefi(indexinfor.type, (*tleaf.nodelist.begin()).key, data.key)>0)
SearchnodeL.insert(data);
else
tleaf.insert(data);
ckey = (*(tleaf.nodelist.begin())).key;
*prrChild = blockoffset;
Buffer.b[blocknum].isWritten = 1;
tranleaf = tleaf;
tleaf = SearchnodeL;
SearchnodeL = tranleaf;
SearchnodeL.recordNum = SearchnodeL.nodelist.size();//注意维护recordnum!!
if (tleaf.lastSibling != 0) {
blocknum1 = Buffer.malloc_block(indexinfor.fileoffset, tleaf.lastSibling);
Buffer.b[blocknum1].isWritten = 1;
ztleaf.createLeaf(indexinfor.columnLength, indexinfor.type);
MemorytoLeaf(Buffer.b[blocknum1].block, ztleaf);
ztleaf.nextSibling = blockoffset;
translateLeaf(Buffer.b[blocknum1].block, ztleaf);
}
translateLeaf(Buffer.b[blocknum].block, tleaf);
Buffer.b[blocknum].isWritten = 1;
}
else {
*valid = 0;
SearchnodeL.insert(data);
}
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
IndexColumn IndexManager::selectEqual(Index indexinfor, string key/*, int blockoffset*/) {
IndexColumn Result;
IndexRow result;
int tempblockoffset, nextblock;
bool *valid;
valid = new bool;
*valid = 1;
list<IndexBranch>::iterator i;
list<IndexLeaf>::iterator j;
Branch tbranch, ctbranch;
Leaf tleaf;
tbranch.createBranch(0, indexinfor.columnLength, indexinfor.type);
ctbranch = tbranch;
tleaf.createLeaf(indexinfor.columnLength, indexinfor.type);
IndexLeaf get;
get.key = key;
tempblockoffset = Buffer.malloc_block(indexinfor.fileoffset, indexinfor.blockoffset);
//MemorytoBranch(Buffer.b[tempblockoffset]->block, tbranch);
while (Buffer.b[tempblockoffset].block[4091] != 'L') {
tbranch = ctbranch;
MemorytoBranch(Buffer.b[tempblockoffset].block, tbranch);
i = SearchlocaB(tbranch, get, valid);
if (*valid)
nextblock = (*i).ptrChild;
else
nextblock = tbranch.lastChild;
tempblockoffset = Buffer.malloc_block(indexinfor.fileoffset, nextblock);
}
MemorytoLeaf(Buffer.b[tempblockoffset].block, tleaf);
j = SearchlocaL(tleaf, get, valid);
if (*valid) {
result.blockoffset = (*j).offsetinBlock;
result.fileoffset = (*j).offsetinFile;
result.key = (*j).key;
}
else
result.key = "";
Result.rows.push_back(result);
return Result;
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
IndexColumn IndexManager::selectBetween(Index indexinfor, string keyFrom, string keyTo/*, int& blockoffset*/) {//如果一个结果也没有返回值无效那么把blockoffset置为-1！！！
IndexColumn Result;
IndexRow resultR;
int blockoffsetR;
int tempblockoffset, nextblock;
bool *valid;
valid = new bool;
*valid = 1;
list<IndexBranch>::iterator i;
list<IndexLeaf>::iterator j;
Branch tbranch, ctbranch;
Leaf tleaf, ctleaf;
tbranch.createBranch(0, indexinfor.columnLength, indexinfor.type);
ctbranch = tbranch;
tleaf.createLeaf(indexinfor.columnLength, indexinfor.type);
ctleaf.createLeaf(indexinfor.columnLength, indexinfor.type);
IndexLeaf get;
get.key = keyFrom;
tempblockoffset = Buffer.malloc_block(indexinfor.fileoffset, indexinfor.blockoffset);
//MemorytoBranch(Buffer.b[tempblockoffset]->block, tbranch);
while (Buffer.b[tempblockoffset].block[4091] != 'L') {
tbranch = ctbranch;
MemorytoBranch(Buffer.b[tempblockoffset].block, tbranch);
i = SearchlocaB(tbranch, get, valid);
if (*valid)
nextblock = (*i).ptrChild;
else
nextblock = tbranch.lastChild;
tempblockoffset = Buffer.malloc_block(nextblock, nextblock);
}
MemorytoLeaf(Buffer.b[tempblockoffset].block, tleaf);
j = SearchlocaLM(tleaf, get, valid);
if (!(*valid)) {
blockoffsetR = (*i).ptrChild;
tempblockoffset = Buffer.malloc_block(indexinfor.blockoffset, tleaf.nextSibling);
MemorytoLeaf(Buffer.b[tempblockoffset].block, tleaf);
j = tleaf.nodelist.begin();
}
while (comparefi(indexinfor.type, keyTo, (*j).key) > 0) {
if (comparefi(indexinfor.type, keyFrom, (*j).key) < 0) {
resultR.blockoffset = (*j).offsetinBlock;
resultR.fileoffset = (*j).offsetinFile;
resultR.key = (*j).key;
Result.rows.push_back(resultR);
}
j++;
if (j == tleaf.nodelist.end()) {
if (tleaf.nextSibling == 0)
break;
tempblockoffset = Buffer.malloc_block(indexinfor.blockoffset, tleaf.nextSibling);
tleaf = ctleaf;
MemorytoLeaf(Buffer.b[tempblockoffset].block, tleaf);
j = tleaf.nodelist.begin();
}
}
return Result;
}
list<IndexLeaf> IndexManager::whichDelete(Index indexinfor, string keyFrom, string keyTo, int& blockoffset) {//如果一个结果也没有返回值无效那么把blockoffset置为-1！！！
list<IndexLeaf> fi;
int blockoffsetR;
int tempblockoffset, nextblock;
bool *valid;
valid = new bool;
*valid = 1;
list<IndexBranch>::iterator i;
list<IndexLeaf>::iterator j;
Branch tbranch;
Leaf tleaf;
IndexLeaf get;
get.key = keyFrom;
tempblockoffset = Buffer.malloc_block(indexinfor.fileoffset, indexinfor.blockoffset);
//MemorytoBranch(Buffer.b[tempblockoffset]->block, tbranch);
while (Buffer.b[tempblockoffset].block[4091] != 'L') {
MemorytoBranch(Buffer.b[tempblockoffset].block, tbranch);
i = SearchlocaB(tbranch, get, valid);
if (*valid)
nextblock = (*i).ptrChild;
else
nextblock = tbranch.lastChild;
tempblockoffset = Buffer.malloc_block(nextblock, indexinfor.blockoffset);
}
MemorytoLeaf(Buffer.b[tempblockoffset].block, tleaf);
j = SearchlocaLM(tleaf, get, valid);
if (!(*valid)) {
blockoffsetR = (*i).ptrChild;
tempblockoffset = Buffer.malloc_block(indexinfor.blockoffset, tleaf.nextSibling);
MemorytoLeaf(Buffer.b[tempblockoffset].block, tleaf);
j = tleaf.nodelist.begin();
}
while (comparefi(indexinfor.type, keyTo, (*j).key) >= 0) {
if (comparefi(indexinfor.type, keyFrom, (*j).key) < 0)
fi.push_back((*j));
if (j == tleaf.nodelist.end()) {
tempblockoffset = Buffer.malloc_block(indexinfor.blockoffset, tleaf.nextSibling);
MemorytoLeaf(Buffer.b[tempblockoffset].block, tleaf);
j = tleaf.nodelist.begin();
}
else
j++;
}
return fi;
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
void IndexManager::deleteValue(Index indexinfor, IndexColumn dc/*, int& blockOffset*/) {
list<IndexLeaf> deletevalues;
int blockoffset;
IndexLeaf temp;
for (int i = 0; i < dc.rows.size(); i++) {
temp.key = dc.rows[i].key;
deletevalues.push_back(temp);
}
//deletevalues = whichDelete(indexinfor, keyFrom, keyTo, blockoffset);
//if (blockoffset != -1) {
while (deletevalues.size() != 0) {
temp = *(deletevalues.begin());
deletevalues.pop_front();
deletevalueL(indexinfor, temp);
}
//}
}
int IndexManager::indextoleaf(Index indexinfor, IndexLeaf data, Leaf& getleaf, list<IndexLeaf>::iterator &location) {
int blockoffsetR;
int tempblockoffset, nextblock;
bool *valid;
valid = new bool;
//*valid = 1;
list<IndexBranch>::iterator i;
//list<IndexLeaf>::iterator j;
Branch tbranch, cbranch;
tbranch.createBranch(0, indexinfor.columnLength, indexinfor.type);
cbranch = tbranch;
//IndexLeaf get;
//get.key = key;
tempblockoffset = Buffer.malloc_block(indexinfor.fileoffset, indexinfor.blockoffset);
//MemorytoBranch(Buffer.b[tempblockoffset]->block, tbranch);
while (Buffer.b[tempblockoffset].block[4091] != 'L') {
tbranch = cbranch;
MemorytoBranch(Buffer.b[tempblockoffset].block, tbranch);
i = SearchlocaB(tbranch, data, valid);
if (*valid)
nextblock = (*i).ptrChild;
else
nextblock = tbranch.lastChild;
tempblockoffset = Buffer.malloc_block(nextblock, nextblock);
}
MemorytoLeaf(Buffer.b[tempblockoffset].block, getleaf);
location = SearchlocaL(getleaf, data, valid);
//return blockoffsetR;
return tempblockoffset;
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
void IndexManager::deletevalueL(Index indexinfor, IndexLeaf &data) {
int blockoffset;
int blockoffsetofleaf;
int blocknum;
bool*valid;
valid = new bool;
//IndexLeaf temp;
Branch Father, Root;
Branch cb;
cb.createBranch(0, indexinfor.columnLength, indexinfor.type);
IndexLeaf rin;
IndexRow total;
Leaf Dnode;
list<IndexLeaf>::iterator location;
Dnode.createLeaf(indexinfor.columnLength, indexinfor.type);
Father.createBranch(0, indexinfor.columnLength, indexinfor.type);
Root.createBranch(1, indexinfor.columnLength, indexinfor.type);
blockoffsetofleaf = indextoleaf(indexinfor, data, Dnode, location);
list<IndexBranch>::iterator i;
if (Dnode.recordNum <= Dnode.Max / 2) {
Dnode.nodelist.erase(location);
blocknum = Buffer.malloc_block(indexinfor.fileoffset, Dnode.ptrFather);
MemorytoBranch(Buffer.b[blocknum].block, Father);
i = SearchlocaB(Father, data, valid);
if (*valid) {
Father.nodelist.erase(i);
}
else {
Father.lastChild = (*i).ptrChild;
Father.nodelist.erase(i);
}
Father.recordNum = Father.nodelist.size();
translateBranch(Buffer.b[blocknum].block, Father);
Buffer.b[blocknum].isWritten = 1;
blocknum = Buffer.malloc_block(indexinfor.fileoffset, indexinfor.blockoffset);
MemorytoBranch(Buffer.b[blocknum].block, Root);
Buffer.b[blocknum].isWritten = 1;
while (Dnode.nodelist.size() > 0) {
rin = Dnode.pop();
total.fileoffset = rin.offsetinBlock;
total.blockoffset = rin.offsetinBlock;
total.key = rin.key;
insertValue(Root, total, indexinfor);
}
blocknum = Buffer.malloc_block(indexinfor.fileoffset, Dnode.ptrFather);
Father = cb;
MemorytoBranch(Buffer.b[blocknum].block, Father);
if (Father.recordNum < Father.Max / 2) {
Father.blockNum = Dnode.ptrFather;
deletevalueB(indexinfor, Father, data);
translateBranch(Buffer.b[blocknum].block, Father);
}
}
else {
Dnode.nodelist.erase(location);
Dnode.recordNum--;
Buffer.b[blockoffsetofleaf].isWritten = 1;
translateLeaf(Buffer.b[blockoffsetofleaf].block, Dnode);
}
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
void IndexManager::deletevalueB(Index indexinfor, Branch& Dnode, IndexLeaf &data) {
bool*valid;
int ayi;
int zuihougaibianb;
Branch zuihouB;
zuihouB.createBranch(0, indexinfor.columnLength, indexinfor.type);
valid = new bool;
int blocknum, Ablocknum;
int blockoffset;
Branch Father, Brother;
Father.createBranch(0, indexinfor.columnLength, indexinfor.type);
Brother = Father;
IndexBranch temp;
list<IndexBranch>::iterator i, j;
if (!(Dnode.isRoot)) {
blocknum = Buffer.malloc_block(indexinfor.fileoffset, Dnode.ptrFather);
Buffer.b[blocknum].isWritten = 1;
MemorytoBranch(Buffer.b[blocknum].block, Father);
Father.blockNum = Dnode.ptrFather;
i = SearchlocaB(Father, data, valid);//找到这个位置，如果旁边的孩子有空位删掉之后插进去，如果没有，借一个然后插入就不需要删掉了。最后如果是删了的情况就检查现在这个Father符合情况不，不符合就递归进行。
j = i;
if (*valid) {//不是lastchild的情况
i++;
Ablocknum = Buffer.malloc_block(indexinfor.fileoffset, (*i).ptrChild);
Buffer.b[Ablocknum].isWritten = 1;
MemorytoBranch(Buffer.b[Ablocknum].block, Brother);
if (Brother.recordNum + Dnode.nodelist.size() <= Brother.Max) {
temp.ptrChild = Dnode.lastChild;
temp.key = minkey(indexinfor, Brother);
Brother.insert(temp);
while (Dnode.nodelist.size() != 0) {
temp = Dnode.pop();
Brother.insert(temp);
}
translateBranch(Buffer.b[Ablocknum].block, Brother);
Brother.blockNum = (*i).ptrChild;
changefather(indexinfor, Brother);
Father.nodelist.erase(j);
Father.recordNum--;
deletevalueB(indexinfor, Father, data);
translateBranch(Buffer.b[blocknum].block, Father);
}
else {
temp = Brother.getfront();
Brother.nodelist.pop_front();
Brother.recordNum--;
ayi = Dnode.lastChild;
Dnode.lastChild = temp.ptrChild;
temp.ptrChild = ayi;
Dnode.insert(temp);
temp = Brother.getfront();
(*i).key = minkey(indexinfor, Brother);
//改变转移的那一个节点的father
changefather(indexinfor, Dnode);
translateBranch(Buffer.b[Ablocknum].block, Brother);
translateBranch(Buffer.b[blocknum].block, Father);
//translateBranch(Buffer.b[Ablocknum]->block, Brother);
}
}
else {
i = Father.nodelist.end()--;