Java Reference

Java Reference

CumulativeConstraint.java
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1// Copyright 2010-2021 Google LLC
2// Licensed under the Apache License, Version 2.0 (the "License");
3// you may not use this file except in compliance with the License.
4// You may obtain a copy of the License at
5//
6// http://www.apache.org/licenses/LICENSE-2.0
7//
8// Unless required by applicable law or agreed to in writing, software
9// distributed under the License is distributed on an "AS IS" BASIS,
10// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
11// See the License for the specific language governing permissions and
12// limitations under the License.
13
14package com.google.ortools.sat;
15
16import com.google.ortools.sat.CumulativeConstraintProto;
17
24public class CumulativeConstraint extends Constraint {
26 super(model.getBuilder());
27 this.model = model;
28 }
29
32 CumulativeConstraintProto.Builder cumul = getBuilder().getCumulativeBuilder();
33 cumul.addIntervals(interval.getIndex());
34 cumul.addDemands(model.getLinearExpressionProtoBuilderFromLinearArgument(demand, false));
35 return this;
36 }
37
39 public CumulativeConstraint addDemand(IntervalVar interval, long demand) {
40 CumulativeConstraintProto.Builder cumul = getBuilder().getCumulativeBuilder();
41 cumul.addIntervals(interval.getIndex());
42 cumul.addDemands(model.getLinearExpressionProtoBuilderFromLong(demand));
43 return this;
44 }
45
55 if (intervals.length != demands.length) {
57 "CumulativeConstraint.addDemands", "intervals", "demands");
58 }
59 for (int i = 0; i < intervals.length; i++) {
60 addDemand(intervals[i], demands[i]);
61 }
62 return this;
63 }
64
73 public CumulativeConstraint addDemands(IntervalVar[] intervals, long[] demands) {
74 if (intervals.length != demands.length) {
76 "CumulativeConstraint.addDemands", "intervals", "demands");
77 }
78 for (int i = 0; i < intervals.length; i++) {
79 addDemand(intervals[i], demands[i]);
80 }
81 return this;
82 }
83
92 public CumulativeConstraint addDemands(IntervalVar[] intervals, int[] demands) {
93 if (intervals.length != demands.length) {
95 "CumulativeConstraint.addDemands", "intervals", "demands");
96 }
97 for (int i = 0; i < intervals.length; i++) {
98 addDemand(intervals[i], demands[i]);
99 }
100 return this;
101 }
102
103 private final CpModel model;
104}
Wrapper around a ConstraintProto.
Definition: Constraint.java:25
ConstraintProto.Builder getBuilder()
Returns the constraint builder.
Definition: Constraint.java:49
Exception thrown when parallel arrays have mismatched lengths.
Definition: CpModel.java:52
Main modeling class.
Definition: CpModel.java:43
CpModelProto.Builder getBuilder()
Returns the model builder.
Definition: CpModel.java:1025
CumulativeConstraint addDemands(IntervalVar[] intervals, long[] demands)
Adds all pairs (intervals[i], demands[i]) to the constraint.
CumulativeConstraint addDemands(IntervalVar[] intervals, LinearArgument[] demands)
Adds all pairs (intervals[i], demands[i]) to the constraint.
CumulativeConstraint addDemand(IntervalVar interval, LinearArgument demand)
Adds a pair (interval, demand) to the constraint.
CumulativeConstraint addDemands(IntervalVar[] intervals, int[] demands)
Adds all pairs (intervals[i], demands[i]) to the constraint.
CumulativeConstraint addDemand(IntervalVar interval, long demand)
Adds a pair (interval, demand) to the constraint.
int getIndex()
Returns the index of the interval constraint in the model.
A object that can build a LinearExpr object.