[TAJO-414] Fix bug of bit operations in decode() method of DateDatum class

• Type: Bug
• Status: Resolved
• Priority: Trivial
• Resolution: Fixed
• Assignee: Keuntae Park
• Reporter: Keuntae Park
• Created: 13/Dec/13 04:27
• Updated: 13/Dec/13 05:45
• Resolved: 13/Dec/13 05:41

Description

data structure for date is 32 bits and consists of

meaning	Year	Month	Day
bit offset	31-16	15-8	7 - 0

However, current code does not correctly decode the structure as

  private static LocalDate decode(int val) {
    int year = (val >> 16);
    int monthOfYear = (0x0FFF & val) >> 8;
    int dayOfMonth = (0xF0FF & val);
    return new LocalDate(year, monthOfYear, dayOfMonth);
  }

Bit operations should be changed to

    int monthOfYear = (0xFFFF & val) >> 8;
    int dayOfMonth = (0x00FF & val);