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Drools Planner optimizes automated planning by combining metaheuristic search algorithms with rule engine powered score calculation. This is the drools-planner-examples module which contains examples on how to use Drools Planner.

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/*
 * Copyright 2010 JBoss Inc
 *
 * 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.drools.planner.examples.nurserostering.domain;

import java.util.EnumSet;

public enum WeekendDefinition {
    SATURDAY_SUNDAY("SaturdaySunday",
            DayOfWeek.SATURDAY, DayOfWeek.SUNDAY),
    FRIDAY_SATURDAY_SUNDAY("FridaySaturdaySunday",
            DayOfWeek.FRIDAY, DayOfWeek.SATURDAY, DayOfWeek.SUNDAY),
    FRIDAY_SATURDAY_SUNDAY_MONDAY("FridaySaturdaySundayMonday",
            DayOfWeek.FRIDAY, DayOfWeek.SATURDAY, DayOfWeek.SUNDAY, DayOfWeek.MONDAY),
    SATURDAY_SUNDAY_MONDAY("SaturdaySundayMonday",
            DayOfWeek.SATURDAY, DayOfWeek.SUNDAY, DayOfWeek.MONDAY);

    private EnumSet dayOfWeekSet;
    private DayOfWeek firstDayOfWeekend;
    private DayOfWeek lastDayOfWeekend;

    public static WeekendDefinition valueOfCode(String code) {
        for (WeekendDefinition weekendDefinition : values()) {
            if (code.equalsIgnoreCase(weekendDefinition.getCode())) {
                return weekendDefinition;
            }
        }
        return null;
    }

    private String code;

    private WeekendDefinition(String code, DayOfWeek dayOfWeekend1, DayOfWeek dayOfWeekend2) {
        this.code = code;
        this.dayOfWeekSet = EnumSet.of(dayOfWeekend1, dayOfWeekend2);
        this.firstDayOfWeekend = dayOfWeekend1;
        this.lastDayOfWeekend = dayOfWeekend2;
    }

    private WeekendDefinition(String code, DayOfWeek dayOfWeekend1, DayOfWeek dayOfWeekend2, DayOfWeek dayOfWeekend3) {
        this.code = code;
        this.dayOfWeekSet = EnumSet.of(dayOfWeekend1, dayOfWeekend2, dayOfWeekend3);
        this.firstDayOfWeekend = dayOfWeekend1;
        this.lastDayOfWeekend = dayOfWeekend3;
    }

    private WeekendDefinition(String code, DayOfWeek dayOfWeekend1, DayOfWeek dayOfWeekend2, DayOfWeek dayOfWeekend3,
            DayOfWeek dayOfWeekend4) {
        this.code = code;
        this.dayOfWeekSet = EnumSet.of(dayOfWeekend1, dayOfWeekend2, dayOfWeekend3, dayOfWeekend4);
        this.firstDayOfWeekend = dayOfWeekend1;
        this.lastDayOfWeekend = dayOfWeekend4;
    }

    public String getCode() {
        return code;
    }

    public DayOfWeek getFirstDayOfWeekend() {
        return firstDayOfWeekend;
    }

    public DayOfWeek getLastDayOfWeekend() {
        return lastDayOfWeekend;
    }

    public String toString() {
        return code;
    }

    public boolean isWeekend(DayOfWeek dayOfWeek) {
        return dayOfWeekSet.contains(dayOfWeek);
    }

    public int getWeekendLength() {
        return dayOfWeekSet.size();
    }

}