X-Git-Url: https://git.llucax.com/z.facultad/75.52/treemulator.git/blobdiff_plain/84209ceb44d38eb658f19d38c393cf809a84bf8b..59b7476481f01388fcfd13492adbba7ef841755c:/src/btree.cpp diff --git a/src/btree.cpp b/src/btree.cpp index a88aae3..81af642 100644 --- a/src/btree.cpp +++ b/src/btree.cpp @@ -1,9 +1,10 @@ #include "btree.h" -BTree::BTree (const std::string &name, unsigned int block_size, int kt, bool create_new_file) +BTree::BTree (const std::string &name, unsigned int block_size, int tt, int kt, bool create_new_file) { key_type = kt; + tree_type = tt; uchar *node; BTreeNodeHeader nh; @@ -53,7 +54,13 @@ void BTree::WriteBlock (uchar *block, uint num) void BTree::AddKey (const Clave &k) { uint left, right; - Clave *kout = AddKeyR (&k, 0, left, right); + Clave *kout; + + try { + kout = AddKeyR (k.Clone (), 0, left, right); + } catch (Exception *e) { + throw e; + } if (kout) { unsigned short level; @@ -102,10 +109,19 @@ Clave* BTree::AddKeyR (const Clave *k, uint node_num, uint &left_child, uint &ri ReadNodoHeader (node, &node_header); delete [] node; - if (node_header.level == 0) - return AddKeyLeafR (k, node_num, left_child, right_child); + if (node_header.level == 0) { + try { + return AddKeyLeafR (k, node_num, left_child, right_child); + } catch (Exception *e) { + throw e; + } + } - return AddKeyOtherR (k, node_num, left_child, right_child); + try { + return AddKeyOtherR (k, node_num, left_child, right_child); + } catch (Exception *e) { + throw e; + } } Clave* BTree::AddKeyLeafR (const Clave *k, uint node_num, uint &left_child, uint &right_child) @@ -127,6 +143,14 @@ Clave* BTree::AddKeyLeafR (const Clave *k, uint node_num, uint &left_child, uint while (it != node_keys.end ()) { datait = (*it); + if (tree_type == TYPE_IDENTIFICACION) { + /* Verifico que la clave no existea ya en el arbol */ + if ((*data) == (*datait)) { + throw new AddException (); + return NULL; + } + } + if ((*data) < (*datait)) /* Me pase, lo agrego aca! */ break; @@ -160,6 +184,13 @@ Clave* BTree::AddKeyLeafR (const Clave *k, uint node_num, uint &left_child, uint while (it != node_keys.end ()) { BTreeData *datait; datait = (*it); + if (tree_type == TYPE_IDENTIFICACION) { + /* Verifico que la clave no existea ya en el arbol */ + if ((*data) == (*datait)) { + throw new AddException (); + return NULL; + } + } if ((*data) < (*datait)) /* Me pase, lo agrego aca! */ break; @@ -199,7 +230,7 @@ Clave* BTree::AddKeyLeafR (const Clave *k, uint node_num, uint &left_child, uint used += d->Size (); it++; } - kout = (*it++)->getClave (); // Esta se retorna al "padre" para que se la agregue + kout = (*it++)->GetKey (); // Esta se retorna al "padre" para que se la agregue while (it != node_keys.end ()) { BTreeData *d = (*it); @@ -253,6 +284,13 @@ Clave* BTree::AddKeyOtherR (const Clave *k, uint node_num, uint &left_child, uin posterior = it; while (it != node_keys.end ()) { + if (tree_type == TYPE_IDENTIFICACION) { + /* Verifico que la clave no existea ya en el arbol */ + if ((*data) == (*(*it))) { + throw new AddException (); + return NULL; + } + } if ((*data) < (*(*it))) break; ultima = it; @@ -260,9 +298,9 @@ Clave* BTree::AddKeyOtherR (const Clave *k, uint node_num, uint &left_child, uin } if (it == posterior) { - k = AddKeyR (k, lchild->getChild (), left_child, right_child); + k = AddKeyR (k, lchild->GetChild (), left_child, right_child); } else { - k = AddKeyR (k, (*ultima)->getChild (), left_child, right_child); + k = AddKeyR (k, (*ultima)->GetChild (), left_child, right_child); } DeleteKeys (node_keys); @@ -282,6 +320,13 @@ Clave* BTree::AddKeyOtherR (const Clave *k, uint node_num, uint &left_child, uin while (it != node_keys.end ()) { datait = (*it); + if (tree_type == TYPE_IDENTIFICACION) { + /* Verifico que la clave no existea ya en el arbol */ + if ((*data) == (*datait)) { + throw new AddException (); + return NULL; + } + } if ((*data) < (*datait)) /* Me pase, lo agrego aca! */ break; @@ -317,6 +362,13 @@ Clave* BTree::AddKeyOtherR (const Clave *k, uint node_num, uint &left_child, uin while (it != node_keys.end ()) { BTreeData *datait; datait = (*it); + if (tree_type == TYPE_IDENTIFICACION) { + /* Verifico que la clave no existea ya en el arbol */ + if ((*data) == (*datait)) { + throw new AddException (); + return NULL; + } + } if ((*data) < (*datait)) /* Me pase, lo agrego aca! */ break; @@ -356,9 +408,9 @@ Clave* BTree::AddKeyOtherR (const Clave *k, uint node_num, uint &left_child, uin used += d->Size (); it++; } - kout = (*it)->getClave (); // Esta se retorna al "padre" para que se la agregue + kout = (*it)->GetKey (); // Esta se retorna al "padre" para que se la agregue - new_node_keys.push_back ( new BTreeChildData ((*it)->getChild ())); + new_node_keys.push_back ( new BTreeChildData ((*it)->GetChild ())); it++; while (it != node_keys.end ()) { BTreeData *d = (*it); @@ -422,18 +474,18 @@ void BTree::DelKeyR (BTreeData *k, uint node_num, uint padre) if ((*k) == (*(*it))) { /* La encontre!, retorno */ if (node_header.level == 0) { - DelKeyFromLeaf (k->getClave (), node_num, padre); + DelKeyFromLeaf (k->GetKey (), node_num, padre); } else { uint left, right; if (it == posterior) { - left = lchild->getChild (); - right = (*it)->getChild (); + left = lchild->GetChild (); + right = (*it)->GetChild (); } else { - left = (*ultima)->getChild (); - right = (*it)->getChild (); + left = (*ultima)->GetChild (); + right = (*it)->GetChild (); } std::cout << "Eliminar de Nodo con hijos : " << left << " y " << right << std::endl; - DelKeyFromNode (k->getClave (), node_num, padre, left, right); + DelKeyFromNode (k->GetKey (), node_num, padre, left, right); } DeleteKeys (node_keys); delete [] node; @@ -456,9 +508,9 @@ void BTree::DelKeyR (BTreeData *k, uint node_num, uint padre) /* TODO: Aca faltaria liberar memoria */ if (it == posterior) { - DelKeyR (k, lchild->getChild (), node_num); + DelKeyR (k, lchild->GetChild (), node_num); } else { - DelKeyR (k, (*ultima)->getChild (), node_num); + DelKeyR (k, (*ultima)->GetChild (), node_num); } } @@ -602,22 +654,22 @@ void BTree::JoinNodes (uint node1, uint node2, uint padre, int tipohermano) Clave *cpadre; BTreeData *lchild = (*it++); - if (lchild->getChild () == node1) { - cpadre = (*it)->getClave (); + if (lchild->GetChild () == node1) { + cpadre = (*it)->GetKey (); borrar_padre = it; } else { while (it != nkpadre.end ()) { if (tipohermano == 0) { - if ((*it)->getChild () == node2) + if ((*it)->GetChild () == node2) break; } else { - if ((*it)->getChild () == node1) + if ((*it)->GetChild () == node1) break; } anterior = it; it++; } - cpadre = (*it)->getClave (); + cpadre = (*it)->GetKey (); borrar_padre = it; } if (it == nkpadre.end ()) { @@ -632,14 +684,14 @@ void BTree::JoinNodes (uint node1, uint node2, uint padre, int tipohermano) i = nk1.begin (); while (i != nk1.end ()) { - newkeys.push_back ( new BTreeLeafData ((*i)->getClave ()->Clone ())); + newkeys.push_back ( new BTreeLeafData ((*i)->GetKey ()->Clone ())); i++; } //if (tipohermano == 0) newkeys.push_back ( new BTreeLeafData (cpadre->Clone ())); i = nk2.begin (); while (i != nk2.end ()) { - newkeys.push_back ( new BTreeLeafData ((*i)->getClave ()->Clone ())); + newkeys.push_back ( new BTreeLeafData ((*i)->GetKey ()->Clone ())); i++; } @@ -662,15 +714,17 @@ void BTree::JoinNodes (uint node1, uint node2, uint padre, int tipohermano) WriteNodoHeader (npadre, &nhp); WriteBlock (npadre, padre); - /* TODO: Recuperar nodo1 y nodo2 */ + deleted_nodes.push_back (node1); + deleted_nodes.push_back (node2); } else { WriteKeys (n1, nh1, newkeys); WriteNodoHeader (n1, &nh1); WriteBlock (n1, node1); - /* TODO : Recuperar node2 */ + deleted_nodes.push_back (node2); + /* Actualizo punero al padre */ - (*anterior)->setChild (node1); + (*anterior)->SetChild (node1); nkpadre.erase (borrar_padre); WriteKeys (npadre, nhp, nkpadre); @@ -729,12 +783,12 @@ Clave *BTree::GetKey (uint node_num, char maxmin) } if (maxmin == 0) { - k = (*it)->getClave ()->Clone (); + k = (*it)->GetKey ()->Clone (); node_keys.erase (it); } else { it = node_keys.end (); it--; - k = (*it)->getClave ()->Clone (); + k = (*it)->GetKey ()->Clone (); node_keys.erase (it); } @@ -764,28 +818,28 @@ void BTree::FindBrothers (uint node_num, uint padre, uint &left, uint &right) BTreeData *lchild = (*it++); - if (lchild->getChild () == node_num) { + if (lchild->GetChild () == node_num) { /* Solo tengo hermano derecho */ std::cout << "Hermano Izquierdo : NO TENGO" << std::endl; left = 0; - std::cout << "Hermano Derecho : " << (*it)->getChild () << std::endl; - right = (*it)->getChild (); + std::cout << "Hermano Derecho : " << (*it)->GetChild () << std::endl; + right = (*it)->GetChild (); return; } while (it != node_keys.end ()) { - if ((*it)->getChild () == node_num) + if ((*it)->GetChild () == node_num) break; anterior = it; it++; } siguiente = it++; - std::cout << "Hermano Izquierdo : " << (*anterior)->getChild () << std::endl; - left = (*anterior)->getChild (); + std::cout << "Hermano Izquierdo : " << (*anterior)->GetChild () << std::endl; + left = (*anterior)->GetChild (); if (siguiente != node_keys.end ()) { - right = (*siguiente)->getChild (); - std::cout << "Hermano Derecho : " << (*siguiente)->getChild () << std::endl; + right = (*siguiente)->GetChild (); + std::cout << "Hermano Derecho : " << (*siguiente)->GetChild () << std::endl; } else { right = 0; std::cout << "Hermano Derecho : NO TENGO" << std::endl; @@ -808,9 +862,9 @@ Clave *BTree::ReplaceKeyInFather (uint node_num, uint padre, Clave *k) BTreeData *lchild = (*it++); - if (lchild->getChild () == node_num) { - Clave *ret = (*it)->getClave (); - (*it)->setClave (k); + if (lchild->GetChild () == node_num) { + Clave *ret = (*it)->GetKey (); + (*it)->SetKey (k); WriteKeys (node, node_header, node_keys); WriteNodoHeader (node, &node_header); @@ -822,14 +876,14 @@ Clave *BTree::ReplaceKeyInFather (uint node_num, uint padre, Clave *k) } while (it != node_keys.end ()) { - if ((*it)->getChild () == node_num) + if ((*it)->GetChild () == node_num) break; anterior = it; it++; } - Clave *ret = (*it)->getClave (); - (*it)->setClave (k); + Clave *ret = (*it)->GetKey (); + (*it)->SetKey (k); WriteKeys (node, node_header, node_keys); WriteNodoHeader (node, &node_header); @@ -867,7 +921,7 @@ void BTree::DelKeyFromNode (Clave *k, uint node_num, uint padre, uint left, uint node_keyr = ReadKeys (node_r, node_hr); data_r = *(node_keyr.begin ()); padre_hijo = right; - right = data_r->getChild (); + right = data_r->GetChild (); DeleteKeys (node_keyr); delete [] node_r; @@ -903,8 +957,8 @@ void BTree::DelKeyFromNode (Clave *k, uint node_num, uint padre, uint left, uint PrintNode (node_num); exit (1); } - (*it)->setClave (reemplazar->getClave ()); - reemplazar->setClave (k->Clone ()); + (*it)->SetKey (reemplazar->GetKey ()); + reemplazar->SetKey (k->Clone ()); std::cout << "Tengo todo reemplazado ...\n"; @@ -1083,11 +1137,18 @@ uchar *BTree::NewBlock (uint &num) uchar *node; BTreeNodeHeader nh; - fseek (fp, 0, SEEK_END); - filelen = ftell (fp); + std::list::iterator it; + it = deleted_nodes.begin (); - num = filelen/header.block_size - 1; + if (it != deleted_nodes.end ()) { + num = *it; + deleted_nodes.erase (it); + } else { + fseek (fp, 0, SEEK_END); + filelen = ftell (fp); + num = filelen/header.block_size - 1; + } node = new uchar[header.block_size]; ReadNodoHeader (node, &nh); nh.level = 0; @@ -1164,9 +1225,9 @@ BTreeFindResult *BTree::FindKeyR (const Clave *k, uint node_num) /* TODO: Aca faltaria liberar memoria */ BTreeFindResult *ret; if (it == posterior) - ret = FindKeyR (k, lchild->getChild ()); + ret = FindKeyR (k, lchild->GetChild ()); else - ret = FindKeyR (k, (*ultima)->getChild ()); + ret = FindKeyR (k, (*ultima)->GetChild ()); DeleteKeys (node_keys); delete [] node; @@ -1183,3 +1244,8 @@ void BTree::DeleteKeys (std::list &keys) it++; } } + +int BTree::type () const +{ + return key_type; +}