Method compare

src/org/apache/pig/data/SchemaTuple.java:1006–1015

(boolean usNull, int usVal, boolean themNull, int themVal)

    }

    protected int compare(boolean usNull, int usVal, boolean themNull, int themVal) {
        if (usNull && themNull) {
            return 0;
        } else if (themNull) {
            return 1;
        } else if (usNull) {
            return -1;
        }
        return compare(usVal, themVal);
    }

    protected int compare(int val, int themVal) {
        return val == themVal ? 0 : (val > themVal ? 1 : -1);