Java Reference

Java Reference

JavaDecisionBuilder.java
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1 // Copyright 2010-2018 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
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11 // See the License for the specific language governing permissions and
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13 
14 package com.google.ortools.constraintsolver;
15 
23 public class JavaDecisionBuilder extends DecisionBuilder {
27  public final Decision nextWrap(Solver solver) {
28  try {
29  return next(solver);
30  } catch (Solver.FailException e) {
31  return solver.makeFailDecision();
32  }
33  }
37  public Decision next(Solver solver) throws Solver.FailException {
38  return null;
39  }
40 }
Decision next(Solver solver)
This is the new method to subclass when defining a java decision builder.
final Decision nextWrap(Solver solver)
This methods wraps the calls to next() and catches fail exceptions.
Decision makeFailDecision()
Definition: Solver.java:2476
A DecisionBuilder is responsible for creating the search tree.
This exceptions signal that a failure has been raised in the C++ world.
Definition: Solver.java:88
A Decision represents a choice point in the search tree.
Definition: Decision.java:14
This class acts as a intermediate step between a c++ decision builder and a java one.
Solver Class A solver represents the main computation engine.
Definition: Solver.java:57