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OptaPlanner solves planning problems. This lightweight, embeddable planning engine implements powerful and scalable algorithms to optimize business resource scheduling and planning. This module contains the examples which demonstrate how to use it in a normal Java application.

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package org.optaplanner.examples.nqueens.optional;

import java.util.ArrayList;
import java.util.List;

import org.optaplanner.core.api.domain.solution.cloner.SolutionCloner;
import org.optaplanner.examples.nqueens.domain.NQueens;
import org.optaplanner.examples.nqueens.domain.Queen;

public class NQueensSolutionCloner implements SolutionCloner {

    @Override
    public NQueens cloneSolution(NQueens original) {
        NQueens clone = new NQueens(original.getId());
        clone.setN(original.getN());
        clone.setColumnList(original.getColumnList());
        clone.setRowList(original.getRowList());
        List queenList = original.getQueenList();
        List clonedQueenList = new ArrayList(queenList.size());
        for (Queen originalQueen : queenList) {
            Queen cloneQueen = new Queen(originalQueen.getId());
            cloneQueen.setColumn(originalQueen.getColumn());
            cloneQueen.setRow(originalQueen.getRow());
            clonedQueenList.add(cloneQueen);
        }
        clone.setQueenList(clonedQueenList);
        clone.setScore(original.getScore());
        return clone;
    }

}