set(DateTime value, TimeZone tz) { //DateTime does not have a null state //if (value == null) //{ // setNull(); // return; //} setNotNull(); nanos = 0; if (value.Kind == DateTimeKind.Utc) // if UTC, normalize to LOCAL { value = value.ToLocalTime(); } switch (dbms_type) { case DBMS_TYPE_TS: /* ** DAS parses local time using GMT. */ this.value = SqlDates.formatTimestamp(value, true); break; case DBMS_TYPE_TSWO: /* ** Format as local time using requested or default timezone. */ this.value = (tz != null) ? SqlDates.formatTimestamp(value, tz) : SqlDates.formatTimestamp(value, false); break; case DBMS_TYPE_TSTZ: /* ** Format as local time using requested or default timezone. */ this.value = (tz != null) ? SqlDates.formatTimestamp(value, tz) : SqlDates.formatTimestamp(value, false); /* ** Get the TZ offset of the target value in the requested ** or default timezone. */ timezone = (tz != null) ? SqlDates.formatTZ(tz, value) : SqlDates.formatTZ(value); break; } return; } // set
setTime(DateTime value, TimeZone tz) { // DateTime is never null //if ( value == null ) //setNull(); //else { /* ** The time is stored in GMT. Timezones are not applied to ** Ingres times since they are also stored in GMT. OpenSQL ** times are assumed to be in the client TZ, so timezones ** can be applied to store values for specific timezones. */ if (osql_dates && tz != null) { /* ** First retrieve the time in the desired TZ. */ String str = SqlDates.formatTime(value, tz); /* ** The local TZ will be applied, either by the driver or ** the gateway, during subsequent processing. We use the ** local TZ to save the desired value so as to cancel the ** future application of the local TZ. */ value = SqlDates.parseTime(str, false); } /* ** Produce the correct time value for the current connection. ** ** Ingres only partially supports time only values and adds ** the current date to such values. JDBC specifies that the ** date portion for time values should be set to the date ** epoch 1970-01-01. When the current date has a different ** daylight savings offset than the epoch, a one hour offset ** can occur because of the different GMT offsets applied by ** Java and Ingres. Due to these problems, format the time ** as a timestamp to ensure consistent processing. Note that ** formatTimestamp() takes a java.util.Date parameter of which ** java.sql.Time is a sub-class. */ setNotNull(); this.value = SqlDates.formatTimestamp(value, use_gmt); interval = false; } return; } // setTime
setTimestamp(DateTime value, TimeZone tz) { // DateTime is never null //if (value == null) // setNull(); //else if (tz != null) { setString(SqlDates.formatTimestamp(value, tz)); } else { setString(SqlDates.formatTimestamp(value, false)); } return; } // setTimestamp
getString() { /* ** Do conversion to validate format. ** Format using local default TZ for local time. ** Nano-seconds must be manually formatted. */ String str = SqlDates.formatTimestamp(get(null), false); if (nanos > 0) { str += SqlDates.formatFrac(nanos); } return(str); } // getString
setTimestamp(DateTime value, TimeZone tz) { // DateTime is never null //if ( value == null ) //setNull(); //else { /* ** The timestamp is stored in GMT. Timezones are not applied to ** Ingres timestamps since they are also stored in GMT. OpenSQL ** timestamps are assumed to be in the client TZ, so timezones ** can be applied to store values for specific timezones. */ if (osql_dates && tz != null) { /* ** First retrieve the timestamp for the desired TZ. */ String str = SqlDates.formatTimestamp(value, tz); /* ** The local TZ will be applied, either by the driver or ** the gateway, during subsequent processing. We use the ** local TZ to save the desired value to cancel the future ** application. */ value = SqlDates.parseTimestamp(str, false); } setNotNull(); this.value = SqlDates.formatTimestamp(value, use_gmt); interval = false; } return; } // setTimestamp
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
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