getDate(TimeZone tz)
{
String str = getString().Trim();
return((tz == null) ? SqlDates.parseDate(str, false)
: SqlDates.parseDate(str, tz));
} // getDate
getDate(TimeZone tz)
{
/*
** Strip time component by re-formatting as date value.
*/
return(SqlDates.parseDate(SqlDates.formatDate(get(tz), false), false));
} // getDate
get(TimeZone tz)
{
/*
** Dates should be independent of TZ, but JDBC date values
** are stored in UTC. Use the TZ provided to ensure the
** resulting UTC value represents the date in the desired
** TZ. Otherwise, the local default TZ is used.
*/
return((tz != null) ? SqlDates.parseDate(value, tz)
: SqlDates.parseDate(value, false));
} // get
getTimestamp(TimeZone tz)
{
/*
** Ingres dates are overloaded with 'empty' date,
** date only, timestamp and interval values. The
** first three types are handled explicitly below.
** Intervals will either cause an exception while
** attempting to parse the value or as the default
** action for an unrecognized format.
*/
try
{
if (value.Length == 0) // Empty date
{
/*
** Create a timstamp EPOCH value. If no timezone is
** provided, we can return the local epoch constant.
** Otherwise, the epoch value for the requested
** timezone must be generated.
*/
return((tz == null) ? SqlDates.getEpochTimestamp()
: SqlDates.parseTimestamp(SqlDates.TS_EPOCH, tz));
}
else if (value.Length == SqlDates.D_FMT.Length) // Date only
{
/*
** There is no time component, so convert to timestamp with
** a 0 time component for the requested/local timezone.
*/
DateTime date = (tz == null)
? SqlDates.parseDate(value, false)
: SqlDates.parseDate(value, tz);
return(date);
}
else if (value.Length == SqlDates.TS_FMT.Length) // Timestamp
{
/*
** Convert to GMT timestamp using TZ for current connection.
*/
DateTime ts = SqlDates.parseTimestamp(value, use_gmt);
if (osql_dates && tz != null)
{
/*
** Effectively, we need to apply time difference
** between local and requested timezones. First,
** apply local TZ to get local timestamp. Then
** apply requested TZ to get desired GMT value.
*/
String str = SqlDates.formatTimestamp(ts, false);
ts = SqlDates.parseTimestamp(str, tz);
}
return(ts);
}
else // Interval
{
/*
** Can't support intervals with Timestamp objects.
*/
throw SqlEx.get(ERR_GC401B_INVALID_DATE);
}
}
catch (SqlEx ex)
{
/*
** Any parsing error is assumed to be caused by an interval.
*/
interval = true;
throw ex;
}
} // getTimestamp
getDate(TimeZone tz)
{
/*
** Ingres dates are overloaded with 'empty' date,
** date only, timestamp and interval values. The
** first three types are handled explicitly below.
** Intervals will either cause an exception while
** attempting to parse the value or as the default
** action for an unrecognized format.
*/
try
{
if (value.Length == 0) // Empty date
{
/*
** Ingres permits zero length date literals or 'empty'
** dates. Since does not have any corresponding
** date/time concept, we use the date epoch. If
** no timezone is provided, we can return the local
** epoch constant. Otherwise, the epoch value for the
** requested timezone must be generated.
*/
return((tz == null) ? SqlDates.getEpochDate()
: SqlDates.parseDate(SqlDates.D_EPOCH, tz));
}
else if (value.Length == SqlDates.D_FMT.Length) // Date only
{
/*
** The date is stored in GMT such as to have a 0 time for
** the target TZ (requested/local).
*/
return((tz == null) ? SqlDates.parseDate(value, false)
: SqlDates.parseDate(value, tz));
}
else if (value.Length == SqlDates.TS_FMT.Length) // Timestamp
{
/*
** Remove the time component but retain correct date:
**
** 1. Convert to GMT Timestamp using TZ for current connection.
** 2. Format as date only using local TZ to get local date.
** 3. Generate Date value using requested/local timezone.
*/
DateTime date = SqlDates.parseTimestamp(value, use_gmt);
String str = SqlDates.formatDate(date, false);
return((osql_dates && tz != null)
? SqlDates.parseDate(str, tz)
: SqlDates.parseDate(str, false));
}
else // Interval
{
/*
** Can't support intervals with Date objects.
*/
throw SqlEx.get(ERR_GC401B_INVALID_DATE);
}
}
catch (SqlEx ex)
{
/*
** Any parsing error is assumed to be caused by an interval.
*/
interval = true;
throw ex;
}
} // getDate
getString()
{
String str;
/*
** Ingres dates are overloaded with 'empty' date,
** date only, timestamp and interval values. The
** raw data string is returned for empty dates and
** intervals. Date only values and timestamps are
** parsed/formatted to validate and set timezone.
** Intervals will cause an exception if an attempt
** is made to parse the value or will be detected
** by a mis-match in expected string lengths.
*/
try
{
if (value.Length == 0) // Empty date
{
/*
** Return the empty date string.
*/
str = value;
}
else if (value.Length == SqlDates.D_FMT.Length) // Date only
{
/*
** Do conversion to check for valid format (in
** case this is an interval). Ingres dates are
** indepedent of timezone, so use local TZ.
*/
DateTime dt = SqlDates.parseDate(value, false);
str = SqlDates.formatDate(dt, false);
}
else if (value.Length == SqlDates.TS_FMT.Length) // Timestamp
{
/*
** Convert to GMT using TZ for current connection
** and then to local time using local TZ.
*/
DateTime ts = SqlDates.parseTimestamp(value, use_gmt);
str = SqlDates.formatTimestamp(ts, false);
}
else // Interval
{
/*
** Return the interval string and produce a warning.
*/
interval = true;
str = value;
}
}
catch (SqlEx)
{
/*
** Any parsing error is assumed to be caused by an interval.
*/
interval = true;
str = value;
}
return(str);
} // getString
getDate(TimeZone tz)
{
return((tz == null) ? SqlDates.parseDate(value.Trim(), false)
: SqlDates.parseDate(value.Trim(), tz));
} // getDate
