CpSolverSolutionCallback.java

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// Copyright 2010-2021 Google LLC
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package com.google.ortools.sat;

public class CpSolverSolutionCallback extends SolutionCallback {
  public long value(LinearArgument expr) {
    final LinearExpr e = expr.build();
    long result = e.getOffset();
    for (int i = 0; i < e.numElements(); ++i) {
      result += solutionIntegerValue(e.getVariableIndex(i)) * e.getCoefficient(i);
    }
    return result;
  }

  public Boolean booleanValue(Literal literal) {
    return solutionBooleanValue(literal.getIndex());
  }

  @Override
  public void onSolutionCallback() {}
}