pstlab /
PLATINUm
| Total Complexity | 9 |
| Total Lines | 67 |
| Duplicated Lines | 0 % |
| Changes | 0 | ||
| 1 | package it.cnr.istc.pst.platinum.ai.framework.microkernel.resolver.timeline.scheduling; |
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| 10 | public class PrecedenceConstraint implements Comparable<PrecedenceConstraint> |
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| 11 | { |
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| 12 | private Decision reference; // reference decision of the precedence constraint |
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| 13 | private Decision target; // target decision of the precedence constraint |
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| 14 | private double preserved; // value computed by means of heuristics introduced in [Laborie 2005] |
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| 15 | |||
| 16 | /** |
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| 17 | * |
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| 18 | * @param reference |
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| 19 | * @param target |
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| 20 | */ |
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| 21 | protected PrecedenceConstraint(Decision reference, Decision target) { |
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| 22 | this.reference = reference; |
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| 23 | this.target = target; |
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| 24 | } |
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| 25 | |||
| 26 | /** |
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| 27 | * |
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| 28 | * @param preserved |
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| 29 | */ |
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| 30 | public void setPreservedSpace(double preserved) { |
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| 31 | this.preserved = preserved; |
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| 32 | } |
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| 33 | |||
| 34 | /** |
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| 35 | * |
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| 36 | * @return |
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| 37 | */ |
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| 38 | public double getPreservedValue() { |
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| 39 | return this.preserved; |
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| 40 | } |
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| 41 | |||
| 42 | /** |
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| 43 | * |
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| 44 | * @return |
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| 45 | */ |
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| 46 | public Decision getReference() { |
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| 47 | return reference; |
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| 48 | } |
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| 49 | |||
| 50 | /** |
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| 51 | * |
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| 52 | * @return |
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| 53 | */ |
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| 54 | public Decision getTarget() { |
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| 55 | return target; |
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| 56 | } |
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| 57 | |||
| 58 | /** |
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| 59 | * |
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| 60 | */ |
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| 61 | @Override |
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| 62 | public String toString() { |
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| 63 | // JSON style object description |
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| 64 | return "{ \"type\": \"PRECEDENCE_CONSTRAINT\", " |
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| 65 | + "\"reference\": " + this.reference + ", " |
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| 66 | + "\"target\": " + this.target + ", " |
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| 67 | + "\"preserved-space-heuristic\": " + this.preserved + " }"; |
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| 68 | } |
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| 69 | |||
| 70 | /** |
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| 71 | * |
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| 72 | */ |
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| 73 | @Override |
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| 74 | public int compareTo(PrecedenceConstraint pc) { |
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| 75 | // compare preserved space heuristic |
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| 76 | return this.preserved < pc.preserved ? -1 : this.preserved > pc.preserved ? 1 : 0; |
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| 77 | } |
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| 79 |
compareTo()andequals()must provide the same behaviour so that if, and only if,compareTo()returns 0,equals()returns true.