Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
LPModelSolverAsFixedDoubleEdgeMap |
|
| 1.0;1 |
1 | /* | |
2 | This file is part of Combean. | |
3 | ||
4 | Combean is free software; you can redistribute it and/or modify | |
5 | it under the terms of the GNU General Public License as published by | |
6 | the Free Software Foundation; either version 2 of the License, or | |
7 | (at your option) any later version. | |
8 | ||
9 | Combean is distributed in the hope that it will be useful, | |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | GNU General Public License for more details. | |
13 | ||
14 | You should have received a copy of the GNU General Public License | |
15 | along with Combean; if not, write to the Free Software | |
16 | Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
17 | */ | |
18 | /* | |
19 | * Created on 30.08.2005 | |
20 | * | |
21 | */ | |
22 | package net.sourceforge.combean.graph.alg.lp; | |
23 | ||
24 | import net.sourceforge.combean.interfaces.graph.Edge; | |
25 | import net.sourceforge.combean.interfaces.graph.containers.doubleval.FixedDoubleEdgeMap; | |
26 | import net.sourceforge.combean.interfaces.graph.prop.GlobalNumberedEdgesGraphProp; | |
27 | import net.sourceforge.combean.interfaces.mathprog.lp.model.LPModelSolver; | |
28 | import net.sourceforge.combean.mathprog.lp.model.LPModelIndexImpl; | |
29 | ||
30 | /** | |
31 | * Wrap a LP model modelSolver as fixed double edge map, which returns the primal | |
32 | * solution value for each edge. | |
33 | * | |
34 | * This is useful for LPs where a part of the variables correspond to settings | |
35 | * for the edges in a graph. | |
36 | * | |
37 | * @author schickin | |
38 | * | |
39 | */ | |
40 | public class LPModelSolverAsFixedDoubleEdgeMap implements FixedDoubleEdgeMap { | |
41 | ||
42 | 9 | private LPModelSolver modelSolver = null; |
43 | ||
44 | 9 | private GlobalNumberedEdgesGraphProp numberedEdges = null; |
45 | 9 | private String offsetId = null; |
46 | ||
47 | /** | |
48 | * Constructor | |
49 | * | |
50 | * @param solver the LP model modelSolver to be wrapped. The LP model must | |
51 | * contain the edges of the graph for which the edge map is accessed. | |
52 | * @param numberedEdges the graph to which the edge map refers. | |
53 | * @param offsetId the offset identifier for the columns in the LP model | |
54 | * which correspond to the edges in the given graph. | |
55 | */ | |
56 | public LPModelSolverAsFixedDoubleEdgeMap(LPModelSolver solver, | |
57 | GlobalNumberedEdgesGraphProp numberedEdges, | |
58 | String offsetId) { | |
59 | 9 | super(); |
60 | ||
61 | 9 | this.modelSolver = solver; |
62 | 9 | this.numberedEdges = numberedEdges; |
63 | 9 | this.offsetId = offsetId; |
64 | 9 | } |
65 | ||
66 | /* (non-Javadoc) | |
67 | * @see net.sourceforge.combean.interfaces.graph.containers.doubleval.FixedDoubleEdgeMap#getDouble(net.sourceforge.combean.interfaces.graph.Edge) | |
68 | */ | |
69 | public double getDouble(Edge e) { | |
70 | 45 | return this.modelSolver.getSolution( |
71 | new LPModelIndexImpl( | |
72 | this.numberedEdges.getEdgeNumber(e), this.offsetId)); | |
73 | } | |
74 | ||
75 | } |