Package org.apache.xmlbeans

## Class GDateBuilder

- java.lang.Object
- - org.apache.xmlbeans.GDateBuilder

- All Implemented Interfaces:
    `Serializable`, `GDateSpecification`

      public final class GDateBuilder
      extends Object
      implements GDateSpecification, Serializable

  Used to build `GDates`.

  Like GDate, a GDateBuilder represents an Gregorian Date, Time, and Timezone, or subset of information (Year, Month, Day, Time, Timezone, or some combination). Wherever it provides guidance, the XML Schema 1.0 specification (plus published errata) is followed.

  Instances may separately set or clear the year, month, day-of-month, and time-of-day. Not all operations are meaningful on all combinations. In particular, timezone normalization is only possible if there is a time, or a time together with a full date.

  See Also:
    Serialized Form

- - ### Field Summary

    - ### Fields inherited from interface org.apache.xmlbeans.GDateSpecification

      `HAS_DAY, HAS_MONTH, HAS_TIME, HAS_TIMEZONE, HAS_YEAR`

  - ### Constructor Summary

    Constructors
    Constructor | Description
    --- | ---
    `GDateBuilder()` | Constructs a GDateBuilder specifying no date or time
    `GDateBuilder​(int year, int month, int day, int hour, int minute, int second, BigDecimal fraction)` | Constructs a GDateBuilder with the specified year, month, day, hours, minutes, seconds, and optional fractional seconds, in an unspecified timezone.
    `GDateBuilder​(int year, int month, int day, int hour, int minute, int second, BigDecimal fraction, int tzSign, int tzHour, int tzMinute)` | Constructs an absolute GDateBuilder with the specified year, month, day, hours, minutes, seconds, and optional fractional seconds, and in the timezone specified.
    `GDateBuilder​(CharSequence string)` | Constructs a GDateBuilder from a lexical representation.
    `GDateBuilder​(Calendar calendar)` |
    `GDateBuilder​(Date date)` | Constructs a GDateBuilder based on a java.util.Date.
    `GDateBuilder​(GDateSpecification gdate)` | Constructs a GDateBuilder by copying another GDateSpecification.

  - ### Method Summary

    All Methods Instance Methods Concrete Methods
    Modifier and Type | Method | Description
    --- | --- | ---
    `void` | `addDuration​(int sign, int year, int month, int day, int hour, int minute, int second, BigDecimal fraction)` | Adds a given duration to the date/time.
    `void` | `addGDuration​(GDurationSpecification duration)` | Adds a given duration to the date/time.
    `String` | `canonicalString()` | The canonical string representation.
    `void` | `clearDay()` | Clears the day-of-month.
    `void` | `clearMonth()` | Clears the month-of-year.
    `void` | `clearTime()` | Clears the time-of-day.
    `void` | `clearTimeZone()` | Clears the timezone.
    `void` | `clearYear()` | Clears the year.
    `Object` | `clone()` | Builds another GDateBuilder with the same value as this one.
    `int` | `compareToGDate​(GDateSpecification datespec)` | Comparison to another GDate.
    `int` | `getBuiltinTypeCode()` | Returns the builtin type code for the shape of the information contained in this instance, or 0 if the instance doesn't contain information corresponding to a Schema type.
    `XmlCalendar` | `getCalendar()` | Retrieves the value of the current time as an `XmlCalendar`.
    `Date` | `getDate()` | Retrieves the value of the current time as a java.util.Date instance.
    `int` | `getDay()` | Gets the day-of-month.
    `int` | `getFlags()` | Returns a combination of flags indicating the information contained by this GDate.
    `BigDecimal` | `getFraction()` | Gets the fraction-of-second.
    `int` | `getHour()` | Gets the hour-of-day.
    `int` | `getJulianDate()` | Returns the Julian date corresponding to this Gregorian date.
    `int` | `getMillisecond()` | Gets the rounded millisecond value.
    `int` | `getMinute()` | Gets the minute-of-hour.
    `int` | `getMonth()` | Gets the month-of-year.
    `int` | `getSecond()` | Gets the second-of-minute.
    `int` | `getTimeZoneHour()` | Gets the time zone hour.
    `int` | `getTimeZoneMinute()` | Gets the time zone minutes.
    `int` | `getTimeZoneSign()` | Gets the time zone sign.
    `int` | `getYear()` | Gets the year.
    `boolean` | `hasDate()` | True if this date/time specification specifies a full date (year, month, day)
    `boolean` | `hasDay()` | True if this date/time specification specifies a day-of-month.
    `boolean` | `hasMonth()` | True if this date/time specification specifies a month-of-year.
    `boolean` | `hasTime()` | True if this date/time specification specifies a time-of-day.
    `boolean` | `hasTimeZone()` | True if this date/time specification specifies a timezone.
    `boolean` | `hasYear()` | True if this date/time specification specifies a year.
    `boolean` | `isImmutable()` | True if the instance is immutable.
    `boolean` | `isValid()` | True if all date fields lie within their legal ranges.
    `void` | `normalize()` | Normalizes the instance, ensuring date and time fields are within their normal ranges.
    `void` | `normalizeToTimeZone​(int tzTotalMinutes)` | Normalizes to a time zone specified by a number of offset minutes rather than sign/hour/minute; for example, normalizeToTimeZone(-60) is the same as normalizeToTimeZone(-1, 1, 0).
    `void` | `normalizeToTimeZone​(int tzSign, int tzHour, int tzMinute)` | If the time and timezone are known, this method changes the timezone to the specified UTC offset, altering minutes, hours, day, month, and year as necessary to ensure that the actual described moment in time is the same.
    `void` | `setBuiltinTypeCode​(int typeCode)` | Clears the fields in this GDateBuilder that are not applicable for the given SchemaType date code.
    `void` | `setDate​(Date date)` | Sets the current time and date based on a java.util.Date instance.
    `void` | `setDay​(int day)` | Sets the day-of-month.
    `void` | `setGDate​(GDateSpecification gdate)` | Copies a GDateSpecification, completely replacing the current information in this GDateBuilder.
    `void` | `setJulianDate​(int julianday)` | Sets the Gregorian date based on the given Julian date.
    `void` | `setMonth​(int month)` | Sets the month-of-year.
    `void` | `setTime​(int hour, int minute, int second, BigDecimal fraction)` | Sets the time.
    `void` | `setTimeZone​(int tzTotalMinutes)` | Sets the time zone based on a number of offset minutes rather than sign/hour/minute; for example, setTimeZone(-60) is the same as setTimeZone(-1, 1, 0).
    `void` | `setTimeZone​(int tzSign, int tzHour, int tzMinute)` | Sets the time zone without changing the other time fields.
    `void` | `setYear​(int year)` | Sets the year.
    `void` | `subtractGDuration​(GDurationSpecification duration)` | Subtracts a given duration from the date/time.
    `GDate` | `toGDate()` | Builds a GDate from this GDateBuilder.
    `String` | `toString()` | The natural string representation.

    - ### Methods inherited from class java.lang.Object

      `equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait`

- - ### Constructor Detail

    - #### GDateBuilder

          public GDateBuilder()

      Constructs a GDateBuilder specifying no date or time

    - #### GDateBuilder

          public GDateBuilder​(GDateSpecification gdate)

      Constructs a GDateBuilder by copying another GDateSpecification.

    - #### GDateBuilder

          public GDateBuilder​(CharSequence string)

      Constructs a GDateBuilder from a lexical representation. The lexical space contains the union of the lexical spaces of all the schema date/time types (except for duration).

    - #### GDateBuilder

          public GDateBuilder​(Calendar calendar)

    - #### GDateBuilder

          public GDateBuilder​(int year,
                              int month,
                              int day,
                              int hour,
                              int minute,
                              int second,
                              BigDecimal fraction)

      Constructs a GDateBuilder with the specified year, month, day, hours, minutes, seconds, and optional fractional seconds, in an unspecified timezone.

      Note that by not specifying the timezone the GDateBuilder becomes partially unordered with respect to timesthat do have a specified timezone.

      Parameters:
        `year` - The year
        `month` - The month, from 1-12
        `day` - The day of month, from 1-31
        `hour` - The hour of day, from 0-23
        `minute` - The minute of hour, from 0-59
        `second` - The second of minute, from 0-59
        `fraction` - The fraction of second, 0.0 to 0.999... (may be null)

    - #### GDateBuilder

          public GDateBuilder​(int year,
                              int month,
                              int day,
                              int hour,
                              int minute,
                              int second,
                              BigDecimal fraction,
                              int tzSign,
                              int tzHour,
                              int tzMinute)

      Constructs an absolute GDateBuilder with the specified year, month, day, hours, minutes, seconds, and optional fractional seconds, and in the timezone specified.

      Note that you can reexpress the GDateBuilder in any timezone using normalizeToTimeZone(). The normalize() method normalizes to UTC.

      If you wish to have a time or date that isn't in a specified timezone, then use the constructor that does not include the timezone arguments.

      Parameters:
        `year` - the year
        `month` - the month, from 1-12
        `day` - the day of month, from 1-31
        `hour` - the hour of day, from 0-23
        `minute` - the minute of hour, from 0-59
        `second` - the second of minute, from 0-59
        `fraction` - the fraction of second, 0.0 to 0.999... (may be null)
        `tzSign` - the timezone offset sign, either +1, 0, or -1
        `tzHour` - the timezone offset hour
        `tzMinute` - the timezone offset minute

    - #### GDateBuilder

          public GDateBuilder​(Date date)

      Constructs a GDateBuilder based on a java.util.Date.

      The current offset of the default timezone is used as the timezone.

      For example, if eastern daylight time is in effect at the given date, the timezone on the east coast of the united states translates to GMT-05:00 (EST) + 1:00 (DT offset) == GMT-04:00.

      Parameters:
        `date` - the date object to copy

  - ### Method Detail

    - #### clone

          public Object clone()

      Builds another GDateBuilder with the same value as this one.
      Overrides:
        `clone` in class `Object`

    - #### toGDate

          public GDate toGDate()

      Builds a GDate from this GDateBuilder.

    - #### isImmutable

          public boolean isImmutable()

      True if the instance is immutable.
      Specified by:
        `isImmutable` in interface `GDateSpecification`

    - #### getFlags

          public int getFlags()

      Returns a combination of flags indicating the information contained by this GDate. The five flags are HAS_TIMEZONE, HAS_YEAR, HAS_MONTH, HAS_DAY, and HAS_TIME.
      Specified by:
        `getFlags` in interface `GDateSpecification`

    - #### hasTimeZone

          public final boolean hasTimeZone()

      True if this date/time specification specifies a timezone.
      Specified by:
        `hasTimeZone` in interface `GDateSpecification`

    - #### hasYear

          public final boolean hasYear()

      True if this date/time specification specifies a year.
      Specified by:
        `hasYear` in interface `GDateSpecification`

    - #### hasMonth

          public final boolean hasMonth()

      True if this date/time specification specifies a month-of-year.
      Specified by:
        `hasMonth` in interface `GDateSpecification`

    - #### hasDay

          public final boolean hasDay()

      True if this date/time specification specifies a day-of-month.
      Specified by:
        `hasDay` in interface `GDateSpecification`

    - #### hasTime

          public final boolean hasTime()

      True if this date/time specification specifies a time-of-day.
      Specified by:
        `hasTime` in interface `GDateSpecification`

    - #### hasDate

          public final boolean hasDate()

      True if this date/time specification specifies a full date (year, month, day)
      Specified by:
        `hasDate` in interface `GDateSpecification`

    - #### getYear

          public final int getYear()

      Gets the year. Should be a four-digit year specification.
      Specified by:
        `getYear` in interface `GDateSpecification`

    - #### getMonth

          public final int getMonth()

      Gets the month-of-year. January is 1.
      Specified by:
        `getMonth` in interface `GDateSpecification`

    - #### getDay

          public final int getDay()

      Gets the day-of-month. The first day of each month is 1.
      Specified by:
        `getDay` in interface `GDateSpecification`

    - #### getHour

          public final int getHour()

      Gets the hour-of-day. Midnight is 0, and 11PM is 23.
      Specified by:
        `getHour` in interface `GDateSpecification`

    - #### getMinute

          public final int getMinute()

      Gets the minute-of-hour. Range from 0 to 59.
      Specified by:
        `getMinute` in interface `GDateSpecification`

    - #### getSecond

          public final int getSecond()

      Gets the second-of-minute. Range from 0 to 59.
      Specified by:
        `getSecond` in interface `GDateSpecification`

    - #### getFraction

          public final BigDecimal getFraction()

      Gets the fraction-of-second. Range from 0 (inclusive) to 1 (exclusive).
      Specified by:
        `getFraction` in interface `GDateSpecification`

    - #### getMillisecond

          public final int getMillisecond()

      Gets the rounded millisecond value. Range from 0 to 999
      Specified by:
        `getMillisecond` in interface `GDateSpecification`

    - #### getTimeZoneSign

          public final int getTimeZoneSign()

      Gets the time zone sign. For time zones east of GMT, this is positive; for time zones west, this is negative.
      Specified by:
        `getTimeZoneSign` in interface `GDateSpecification`

    - #### getTimeZoneHour

          public final int getTimeZoneHour()

      Gets the time zone hour. This is always positive: for the sign, look at getTimeZoneSign().
      Specified by:
        `getTimeZoneHour` in interface `GDateSpecification`

    - #### getTimeZoneMinute

          public final int getTimeZoneMinute()

      Gets the time zone minutes. This is always positive: for the sign, look at getTimeZoneSign().
      Specified by:
        `getTimeZoneMinute` in interface `GDateSpecification`

    - #### setYear

          public void setYear​(int year)

      Sets the year. Should be a four-digit year specification.
      Parameters:
        `year` - the year

    - #### setMonth

          public void setMonth​(int month)

      Sets the month-of-year. January is 1.
      Parameters:
        `month` - the month, from 1-12

    - #### setDay

          public void setDay​(int day)

      Sets the day-of-month. The first day of each month is 1.
      Parameters:
        `day` - the day of month, from 1-31

    - #### setTime

          public void setTime​(int hour,
                              int minute,
                              int second,
                              BigDecimal fraction)

      Sets the time. Hours in the day range from 0 to 23; minutes and seconds range from 0 to 59; and fractional seconds range from 0 (inclusive) to 1 (exclusive). The fraction can be null and is assumed to be zero.
      Parameters:
        `hour` - the hour of day, from 0-23 or 24 only if min, sec and fraction are 0
        `minute` - the minute of hour, from 0-59
        `second` - the second of minute, from 0-59
        `fraction` - the fraction of second, 0.0 to 0.999... (may be null)

    - #### setTimeZone

          public void setTimeZone​(int tzSign,
                                  int tzHour,
                                  int tzMinute)

      Sets the time zone without changing the other time fields. If you with to adjust other time fields to express the same actual moment in time in a different time zone, use normalizeToTimeZone.

      Timezones must be between -14:00 and +14:00. Sign must be -1 or 1 (or 0 for UTC only), and the offset hours and minute arguments must be nonnegative.

      Parameters:
        `tzSign` - the timezone offset sign, either +1, 0, or -1
        `tzHour` - the timezone offset hour
        `tzMinute` - the timezone offset minute

    - #### setTimeZone

          public void setTimeZone​(int tzTotalMinutes)

      Sets the time zone based on a number of offset minutes rather than sign/hour/minute; for example, setTimeZone(-60) is the same as setTimeZone(-1, 1, 0).

    - #### clearYear

          public void clearYear()

      Clears the year. After clearing, hasYear returns false and the value of getYear is undefined.

    - #### clearMonth

          public void clearMonth()

      Clears the month-of-year. After clearing. hasMonth returns false and the value of getMonth is undefined.

    - #### clearDay

          public void clearDay()

      Clears the day-of-month. After clearing. hasDay returns false and the value of getDay is undefined.

    - #### clearTime

          public void clearTime()

      Clears the time-of-day. After clearing. hasTime returns false and the value of getTime is undefined.

    - #### clearTimeZone

          public void clearTimeZone()

      Clears the timezone. After clearing. hasTimeZone returns false and the value of getTimeZoneHour and getTimeZoneMinute are undefined. Does not change the other time fields.

    - #### isValid

          public boolean isValid()

      True if all date fields lie within their legal ranges. A GDateBuilder can be invalid, for example, if you change the month to February and the day-of-month is 31.
      Specified by:
        `isValid` in interface `GDateSpecification`

    - #### normalize

          public void normalize()

      Normalizes the instance, ensuring date and time fields are within their normal ranges.

      If no timezone or no time is specified, or if a partial date is specified, this method does nothing, and leaves the timezone information as-is.

      If a time or time and date is specified, this method normalizes the timezone to UTC.

    - #### normalizeToTimeZone

          public void normalizeToTimeZone​(int tzSign,
                                          int tzHour,
                                          int tzMinute)

      If the time and timezone are known, this method changes the timezone to the specified UTC offset, altering minutes, hours, day, month, and year as necessary to ensure that the actual described moment in time is the same.

      It is an error to operate on instances without a time or timezone, or with a partially specified date.

      Parameters:
        `tzSign` - the timezone offset sign, either +1, 0, or -1
        `tzHour` - the timezone offset hour
        `tzMinute` - the timezone offset minute

    - #### normalizeToTimeZone

          public void normalizeToTimeZone​(int tzTotalMinutes)

      Normalizes to a time zone specified by a number of offset minutes rather than sign/hour/minute; for example, normalizeToTimeZone(-60) is the same as normalizeToTimeZone(-1, 1, 0).

    - #### addGDuration

          public void addGDuration​(GDurationSpecification duration)

      Adds a given duration to the date/time.
      Parameters:
        `duration` - the duration to add

    - #### subtractGDuration

          public void subtractGDuration​(GDurationSpecification duration)

      Subtracts a given duration from the date/time.
      Parameters:
        `duration` - the duration to subtract

    - #### addDuration

          public void addDuration​(int sign,
                                  int year,
                                  int month,
                                  int day,
                                  int hour,
                                  int minute,
                                  int second,
                                  BigDecimal fraction)

      Adds a given duration to the date/time.
      Parameters:
        `sign` - +1 to add, -1 to subtract
        `year` - the number of years to add
        `month` - the number of months to add
        `day` - the number of days to add
        `hour` - the number of hours to add
        `minute` - the number of minutes to add
        `second` - the number of seconds to add
        `fraction` - the number of fractional seconds to add (may be null)

    - #### getJulianDate

          public final int getJulianDate()

      Returns the Julian date corresponding to this Gregorian date. The Julian date (JD) is a continuous count of days from 1 January 4713 BC.
      Specified by:
        `getJulianDate` in interface `GDateSpecification`

    - #### setJulianDate

          public void setJulianDate​(int julianday)

      Sets the Gregorian date based on the given Julian date. The Julian date (JD) is a continuous count of days from 1 January 4713 BC.
      Parameters:
        `julianday` - the julian day number

    - #### setDate

          public void setDate​(Date date)

      Sets the current time and date based on a java.util.Date instance.

      The timezone offset used is based on the default TimeZone. (The default TimeZone is consulted to incorporate daylight savings offsets if applicable for the current date as well as the base timezone offset.)

      If you wish to normalize the timezone, e.g., to UTC, follow this with a call to normalizeToTimeZone.

      Parameters:
        `date` - the Date object to copy

    - #### setGDate

          public void setGDate​(GDateSpecification gdate)

      Copies a GDateSpecification, completely replacing the current information in this GDateBuilder.
      Parameters:
        `gdate` - the GDateSpecification to copy

    - #### getCalendar

          public XmlCalendar getCalendar()

      Retrieves the value of the current time as an `XmlCalendar`.

      `XmlCalendar` is a subclass of `GregorianCalendar` which is slightly customized to match XML schema date rules.

      The returned `XmlCalendar` has only those time and date fields set that are reflected in the GDate object. Because of the way the `Calendar` contract works, any information in the isSet() vanishes as soon as you view any unset field using get() methods. This means that if it is important to understand which date fields are set, you must call isSet() first before get().

      Specified by:
        `getCalendar` in interface `GDateSpecification`

    - #### getDate

          public Date getDate()

      Retrieves the value of the current time as a java.util.Date instance.
      Specified by:
        `getDate` in interface `GDateSpecification`

    - #### compareToGDate

          public final int compareToGDate​(GDateSpecification datespec)

      Comparison to another GDate.
      - Returns -1 if this < date. (less-than)
      - Returns 0 if this == date. (equal)
      - Returns 1 if this > date. (greater-than)
      - Returns 2 if this <> date. (incomparable)
      Two instances are incomparable if they have different amounts of information.
      Specified by:
        `compareToGDate` in interface `GDateSpecification`
      Parameters:
        `datespec` - the date to compare against

    - #### getBuiltinTypeCode

          public final int getBuiltinTypeCode()

      Returns the builtin type code for the shape of the information contained in this instance, or 0 if the instance doesn't contain information corresponding to a Schema type.

      Value will be equal to `SchemaType.BTC_NOT_BUILTIN`, `SchemaType.BTC_G_YEAR`, `SchemaType.BTC_G_YEAR_MONTH`, `SchemaType.BTC_G_MONTH`, `SchemaType.BTC_G_MONTH_DAY`, `SchemaType.BTC_G_DAY`, `SchemaType.BTC_DATE`, `SchemaType.BTC_DATE_TIME`, or `SchemaType.BTC_TIME`.

      Specified by:
        `getBuiltinTypeCode` in interface `GDateSpecification`

    - #### setBuiltinTypeCode

          public void setBuiltinTypeCode​(int typeCode)

      Clears the fields in this GDateBuilder that are not applicable for the given SchemaType date code. The code should be `SchemaType.BTC_G_YEAR`, `SchemaType.BTC_G_YEAR_MONTH`, `SchemaType.BTC_G_MONTH`, `SchemaType.BTC_G_MONTH_DAY`, `SchemaType.BTC_G_DAY`, `SchemaType.BTC_DATE`, `SchemaType.BTC_DATE_TIME`, or `SchemaType.BTC_TIME`.
      Parameters:
        `typeCode` - the type code to apply

    - #### canonicalString

          public String canonicalString()

      The canonical string representation. Specific moments or times-of-day in a specified timezone are normalized to UTC time to produce a canonical string form for them. Other recurring time specifications keep their timezone information.
      Specified by:
        `canonicalString` in interface `GDateSpecification`

    - #### toString

          public final String toString()

      The natural string representation. This represents the information that is available, including timezone. For types that correspond to defined schema types (schemaBuiltinTypeCode() > 0), this provides the natural lexical representation.

      When both time and timezone are specified, this string is not the canonical representation unless the timezone is UTC (Z) (since the same moment in time can be expressed in different timezones). To get a canonical string, use the canonicalString() method.

      Specified by:
        `toString` in interface `GDateSpecification`
      Overrides:
        `toString` in class `Object`