1 | // $Id: CbcCompareUser.hpp 1574 2011-01-05 01:13:55Z forrest $ |
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2 | // Copyright (C) 2002, International Business Machines |
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3 | // Corporation and others. All Rights Reserved. |
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4 | // This code is licensed under the terms of the Eclipse Public License (EPL). |
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5 | |
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6 | #ifndef CbcCompareUser_H |
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7 | #define CbcCompareUser_H |
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8 | |
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9 | #include "CbcNode.hpp" |
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10 | #include "CbcCompareBase.hpp" |
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11 | class CbcModel; |
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12 | /* This is an example of a more complex rule with data |
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13 | It is default after first solution |
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14 | If weight is 0.0 then it is computed to hit first solution |
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15 | less 2% |
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16 | */ |
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17 | class CbcCompareUser : public CbcCompareBase { |
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18 | public: |
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19 | // Default Constructor |
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20 | CbcCompareUser () ; |
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21 | // Constructor with weight |
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22 | CbcCompareUser (double weight); |
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23 | |
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24 | // Copy constructor |
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25 | CbcCompareUser ( const CbcCompareUser &rhs); |
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26 | |
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27 | // Assignment operator |
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28 | CbcCompareUser & operator=( const CbcCompareUser& rhs); |
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29 | |
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30 | /// Clone |
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31 | virtual CbcCompareBase * clone() const; |
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32 | |
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33 | ~CbcCompareUser() ; |
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34 | /* This returns true if weighted value of node y is less than |
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35 | weighted value of node x */ |
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36 | virtual bool test (CbcNode * x, CbcNode * y) ; |
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37 | /// This is alternate test function |
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38 | virtual bool alternateTest (CbcNode * x, CbcNode * y); |
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39 | // This allows method to change behavior as it is called |
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40 | // after each solution |
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41 | virtual bool newSolution(CbcModel * model, |
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42 | double objectiveAtContinuous, |
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43 | int numberInfeasibilitiesAtContinuous) ; |
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44 | /// Returns true if wants code to do scan with alternate criterion |
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45 | virtual bool fullScan() const; |
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46 | // This allows method to change behavior |
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47 | // Return true if want tree re-sorted |
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48 | virtual bool every1000Nodes(CbcModel * model,int numberNodes); |
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49 | |
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50 | /* if weight == -1.0 then depth first (before solution) |
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51 | if -2.0 then do breadth first just for first 1000 nodes |
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52 | */ |
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53 | inline double getWeight() const |
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54 | { return weight_;} |
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55 | inline void setWeight(double weight) |
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56 | { weight_ = weight;} |
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57 | protected: |
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58 | // Weight for each infeasibility |
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59 | double weight_; |
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60 | // Weight for each infeasibility - computed from solution |
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61 | double saveWeight_; |
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62 | // Number of solutions |
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63 | int numberSolutions_; |
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64 | // count |
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65 | mutable int count_; |
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66 | // Tree size (at last check) |
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67 | int treeSize_; |
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68 | }; |
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69 | #endif |
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