Class DateTimeValue

java.lang.Object
org.apache.derby.client.am.DateTimeValue
public class DateTimeValue extends Object
This class represents a date or time value as it is represented in the database. In contrast to java.sql.Date, java.sql.Time and java.sql.Timestamp, which are based on java.util.Date, this class does not represent the time as an offset from midnight, January 1, 1970 GMT. Instead, it holds each component (year, month, day, hour, minute, second, nanosecond) as it would have been represented in a given calendar. Since it does not hold information about the time zone for the time it represents, it does not point to a well-defined point in time without being used together with a java.util.Calendar object.

  • Field Details

    • year

      private final int year

    • month

      private final int month

    • day

      private final int day

    • hours

      private final int hours

    • minutes

      private final int minutes

    • seconds

      private final int seconds

    • nanos

      private final int nanos

  • Constructor Details

    • DateTimeValue

      private DateTimeValue(Calendar cal, int nanoFraction)
      Construct a DateTimeValue from a java.util.Calendar.
      Parameters:
      cal - the calendar from which to get the values of the fields
      nanoFraction - the nano second fraction of a second (the milliseconds will be taken from cal, so only the six least significant digits of this value are used)

    • DateTimeValue

      DateTimeValue(Date date, Calendar cal)
      Create an instance from a java.sql.Timestamp using the specified java.util.Calendar.

    • DateTimeValue

      DateTimeValue(Time time, Calendar cal)
      Create an instance from a java.sql.Time using the specified java.util.Calendar.

    • DateTimeValue

      DateTimeValue(Timestamp ts, Calendar cal)
      Create an instance from a java.sql.Timestamp using the specified java.util.Calendar.

    • DateTimeValue

      public DateTimeValue(Date date)
      Create an instance from a java.sql.Date using the default calendar.

    • DateTimeValue

      public DateTimeValue(Time time)
      Create an instance from a java.sql.Time using the default calendar.

    • DateTimeValue

      public DateTimeValue(Timestamp ts)
      Create an instance from a java.sql.Timestamp using the default calendar.

  • Method Details

    • initCalendar

      private static Calendar initCalendar(Calendar cal, Date date)
      Set the time of a calendar.
      Parameters:
      cal - the calendar
      date - an object representing the new time of the calendar
      Returns:
      the calendar (same as cal)

    • getYear

      public int getYear()
      Get the year component.

    • getMonth

      public int getMonth()
      Get the month component. First month is 0 (Calendar.JANUARY).

    • getDayOfMonth

      public int getDayOfMonth()
      Get day of month component. First day of the month is 1.

    • getHours

      public int getHours()
      Get hour of day component (24 hour clock).

    • getMinutes

      public int getMinutes()
      Get minute component.

    • getSeconds

      public int getSeconds()
      Get second component.

    • getNanos

      public int getNanos()
      Get nanosecond component.