| Clover coverage report - |
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| Source file | Conditionals | Statements | Methods | TOTAL | |||||||||||||||
| ASolverFactory.java | 100% | 85,7% | 100% | 90% |
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| 1 | /** | |
| 2 | * | |
| 3 | */ | |
| 4 | package org.sat4j.core; | |
| 5 | ||
| 6 | import java.lang.reflect.Method; | |
| 7 | import java.util.ArrayList; | |
| 8 | import java.util.List; | |
| 9 | ||
| 10 | import org.sat4j.specs.ISolver; | |
| 11 | ||
| 12 | /** | |
| 13 | * A solver factory is responsible to provide prebuilt solvers | |
| 14 | * to the end user. | |
| 15 | * | |
| 16 | * @author bourgeois | |
| 17 | */ | |
| 18 | public abstract class ASolverFactory { | |
| 19 | ||
| 20 | /** | |
| 21 | * This methods returns names of solvers to be used with the method | |
| 22 | * getSolverByName(). | |
| 23 | * | |
| 24 | * @return an array containing the names of all the solvers available in the | |
| 25 | * library. | |
| 26 | * @see #createSolverByName(String) | |
| 27 | */ | |
| 28 | 1 | public String[] solverNames() { |
| 29 | 1 | List<String> l = new ArrayList<String>(); |
| 30 | 1 | Method[] solvers = this.getClass().getDeclaredMethods(); |
| 31 | 1 | for (int i = 0; i < solvers.length; i++) { |
| 32 | 40 | if (solvers[i].getParameterTypes().length == 0 |
| 33 | && solvers[i].getName().startsWith("new")) { | |
| 34 | 30 | l.add(solvers[i].getName().substring(3)); |
| 35 | } | |
| 36 | } | |
| 37 | 1 | String[] names = new String[l.size()]; |
| 38 | 1 | l.toArray(names); |
| 39 | 1 | return names; |
| 40 | } | |
| 41 | ||
| 42 | /** | |
| 43 | * create a solver from its String name. the solvername Xxxx must map one of | |
| 44 | * the newXxxx methods. | |
| 45 | * | |
| 46 | * @param solvername | |
| 47 | * the name of the solver | |
| 48 | * @return an ISolver built using newSolvername. <code>null</code> if the | |
| 49 | * solvername doesn't map one of the method of the factory. | |
| 50 | */ | |
| 51 | 30 | public ISolver createSolverByName(String solvername) { |
| 52 | 30 | Class[] paramtypes = {}; |
| 53 | 30 | try { |
| 54 | 30 | Method m = this.getClass() |
| 55 | .getMethod("new" + solvername, paramtypes); | |
| 56 | 30 | return (ISolver) m.invoke(null, (Object[]) null); |
| 57 | } catch (Exception e) { | |
| 58 | 0 | e.printStackTrace(); |
| 59 | } | |
| 60 | 0 | return null; |
| 61 | } | |
| 62 | ||
| 63 | /** | |
| 64 | * To obtain the default solver of the library. | |
| 65 | * The solver is suitable to solve huge SAT benchmarks. | |
| 66 | * It should reflect state-of-the-art SAT technologies. | |
| 67 | * | |
| 68 | * For solving small/easy SAT benchmarks, use lightSolver() instead. | |
| 69 | * | |
| 70 | * @return a solver from the factory | |
| 71 | * @see #lightSolver() | |
| 72 | */ | |
| 73 | public abstract ISolver defaultSolver(); | |
| 74 | ||
| 75 | /** | |
| 76 | * To obtain a solver that is suitable for solving | |
| 77 | * many small instances of SAT problems. | |
| 78 | * | |
| 79 | * The solver is not using sophisticated but costly | |
| 80 | * reasoning and avoids to allocate too much memory. | |
| 81 | * | |
| 82 | * For solving bigger SAT benchmarks, use defaultSolver() instead. | |
| 83 | * | |
| 84 | * @return a solver from the factory | |
| 85 | * @see #defaultSolver() | |
| 86 | */ | |
| 87 | public abstract ISolver lightSolver(); | |
| 88 | } |
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