65 lines
1.7 KiB
C
65 lines
1.7 KiB
C
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/*
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----
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This file is part of SECONDO.
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Copyright (C) 2004, University in Hagen, Department of Computer Science,
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Database Systems for New Applications.
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SECONDO is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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SECONDO is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with SECONDO; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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----
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*/
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#include "GraphAlgebra.h"
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#include "cmath"
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/*
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This class contains the nodes for the AVL Tree BinTree for the shortestpath
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operator. It have the same operators like the BinTree. To be able to balance
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the tree it uses 5 private methods to balance the tree and a method to keep
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the depth of the nodes actual. At final destruction a method delNode runs
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throw the tree and deletes the nodes from the leaves up to the root.
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*/
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class BinNode {
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public:
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BinNode();
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~BinNode();
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BinNode(BinNode* left, BinNode* right, Edge elem);
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bool insertElem(Edge elem);
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float getCostOfEdge(int at);
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Edge getElemAt(int at);
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void delNode();
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private:
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BinNode* right;
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BinNode* left;
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Edge elem;
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int depth;
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void deepen();
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void balance();
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void balanceRight();
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void balanceInnerRight();
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void balanceLeft();
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void balanceInnerLeft();
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};
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