package data;
/*
Created for when words are sorted by multiple keys, i.e. not just lemmas but lemmas and msd simultaneously.
*/
final class MultipleHMKeys {
    private final String key1, key2, key3;

    public MultipleHMKeys(String key1) {
        this.key1 = key1;
        this.key2 = null;
        this.key3 = null;
    }

    public MultipleHMKeys(String key1, String key2) {
        this.key1 = key1;
        this.key2 = key2;
        this.key3 = null;
    }

    public MultipleHMKeys(String key1, String key2, String key3) {
        this.key1 = key1;
        this.key2 = key2;
        this.key3 = key3;
    }

    public String getKey1() {
        return key1;
    }

    public String getKey2() {
        return key2;
    }

    public String getKey3() {
        return key3;
    }

    @Override
    public int hashCode() {
        return key1.hashCode() ^ key2.hashCode() ^ key3.hashCode();
    }

    @Override
    public boolean equals(Object obj) {
        return (obj instanceof MultipleHMKeys) && ((MultipleHMKeys) obj).key1.equals(key1)
                && ((MultipleHMKeys) obj).key2.equals(key2)
                && ((MultipleHMKeys) obj).key3.equals(key3);
    }
}