package source.enums;

import java.util.HashMap;
import java.util.Map;

public class ComplexEnumsWithInterface {
    private final static Map<Integer, DayOfWeek> ORDINAL_MAP = new HashMap<>();

    public static DayOfWeek fromPersistenceValue(Integer value) {
        return ORDINAL_MAP.get(value);
    }    
    public static void main(String[] args) {
	DayOfWeek day = DayOfWeek.Wednesday;
	assert day.persistenceValue == 3;
        for (DayOfWeek c : DayOfWeek.values()) {
            ORDINAL_MAP.put(c.persistenceValue, c);
        }
        assert ORDINAL_MAP.get(1) == DayOfWeek.Monday;
    }
}

enum DayOfWeek implements SomeInterface {
    Sunday(0), Monday(1), Tuesday(2), Wednesday(3), Thursday(4), Friday(5), Saturday(6);

    public final int persistenceValue;

    DayOfWeek(int persistenceValue) {
	this.persistenceValue = persistenceValue;
    }
}

interface SomeInterface {

}