Keuntae Park created TAJO-414:
---------------------------------
Summary: Fix bug of bit operations in decode() method of DateDatum
class
Key: TAJO-414
URL: https://issues.apache.org/jira/browse/TAJO-414
Project: Tajo
Issue Type: Bug
Reporter: Keuntae Park
Assignee: Keuntae Park
Priority: Trivial
data structure for date is 32 bits and consists of
{| class="wikitable"
|-
! meaning
| Year
| Month
| Day
|-
! bit offset
| 31-16
| 15-8
| 7 - 0
|}
However, current code does not correctly decode the structure as
{noformat}
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);
}
{noformat}
Bit operations should be changed to
{noformat}
int monthOfYear = (0xFFFF & val) >> 8;
int dayOfMonth = (0x00FF & val);
{noformat}
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