/*
* Copyright 2015 Red Hat, Inc. and/or its affiliates.
*
* 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 org.optaplanner.examples.investment.solver.solution.initializer;
import org.optaplanner.core.impl.phase.custom.AbstractCustomPhaseCommand;
import org.optaplanner.core.impl.score.director.ScoreDirector;
import org.optaplanner.examples.investment.domain.AssetClassAllocation;
import org.optaplanner.examples.investment.domain.InvestmentSolution;
import org.optaplanner.examples.investment.domain.util.InvestmentNumericUtil;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class InvestmentAllocationSolutionInitializer extends AbstractCustomPhaseCommand<InvestmentSolution> {
protected final transient Logger logger = LoggerFactory.getLogger(getClass());
@Override
public void changeWorkingSolution(ScoreDirector<InvestmentSolution> scoreDirector) {
InvestmentSolution solution = scoreDirector.getWorkingSolution();
distributeQuantityEvenly(scoreDirector, solution);
}
private void distributeQuantityEvenly(ScoreDirector<InvestmentSolution> scoreDirector, InvestmentSolution solution) {
long budget = InvestmentNumericUtil.MAXIMUM_QUANTITY_MILLIS;
int size = solution.getAssetClassAllocationList().size();
long budgetPerAllocation = budget / size;
long remainder = budget % size;
for (AssetClassAllocation allocation : solution.getAssetClassAllocationList()) {
long quantityMillis = budgetPerAllocation;
if (remainder > 0L) {
remainder--;
quantityMillis++;
}
scoreDirector.beforeVariableChanged(allocation, "quantityMillis");
allocation.setQuantityMillis(quantityMillis);
scoreDirector.afterVariableChanged(allocation, "quantityMillis");
scoreDirector.triggerVariableListeners();
}
}
}