Class GDate
- java.lang.Object
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- org.apache.xmlbeans.GDate
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- All Implemented Interfaces:
java.io.Serializable
,GDateSpecification
public final class GDate extends java.lang.Object implements GDateSpecification, java.io.Serializable
Represents an XML Schema-compatible Gregorian date.There are many date types in XML Schema, and this type represents the natural union of all those types. A GDate can hold any subset of date fields (Year, Month, Day, Time, Timezone, or some combination). Wherever the specification provides guidance, the guidelines in the XML Schema 1.0 specification (plus published errata) are followed.
Instances may separately have values or no values for the year, month, day-of-month, and time-of-day. Not all operations are meaningful on all combinations.
- See Also:
- Serialized Form
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Field Summary
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Fields inherited from interface org.apache.xmlbeans.GDateSpecification
HAS_DAY, HAS_MONTH, HAS_TIME, HAS_TIMEZONE, HAS_YEAR
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Constructor Summary
Constructors Constructor Description GDate(int year, int month, int day, int hour, int minute, int second, java.math.BigDecimal fraction)
Constructs a GDate with the specified year, month, day, hours, minutes, seconds, and optional fractional seconds, in an unspecified timezone.GDate(int year, int month, int day, int hour, int minute, int second, java.math.BigDecimal fraction, int tzSign, int tzHour, int tzMinute)
Constructs an absolute GDate with the specified year, month, day, hours, minutes, seconds, and optional fractional seconds, and in the timezone specified.GDate(java.lang.CharSequence string)
Constructs a GDate based on a lexical representation.GDate(java.util.Calendar calendar)
Constructs a GDate based on a java.util.Calendar.GDate(java.util.Date date)
Constructs a GDate based on a java.util.Date.GDate(GDateSpecification gdate)
Constructs a GDate based on another GDateSpecification.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description GDate
add(GDurationSpecification duration)
Adds a duration to this GDate, and returns a new GDate.java.lang.String
canonicalString()
The canonical string representation.int
compareToGDate(GDateSpecification datespec)
Comparison to another GDate.boolean
equals(java.lang.Object obj)
GDate is an immutable class, and equality is computed based on its canonical value.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 anXmlCalendar
.java.util.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.java.math.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.int
hashCode()
Returns a hash code for this GDate.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()
Returns true: all GDate instances are immutable.boolean
isValid()
True if this GDate corresponds to a valid gregorian date value in XML schema.GDate
subtract(GDurationSpecification duration)
Adds a duration to this GDate, and returns a new GDate.java.lang.String
toString()
The natural string representation.
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Constructor Detail
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GDate
public GDate(java.lang.CharSequence string)
Constructs a GDate based on a lexical representation.
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GDate
public GDate(int year, int month, int day, int hour, int minute, int second, java.math.BigDecimal fraction)
Constructs a GDate 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 GDate becomes partially unordered with respect to times that do have a specified timezone.
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GDate
public GDate(int year, int month, int day, int hour, int minute, int second, java.math.BigDecimal fraction, int tzSign, int tzHour, int tzMinute)
Constructs an absolute GDate with the specified year, month, day, hours, minutes, seconds, and optional fractional seconds, and in the timezone specified.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.
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GDate
public GDate(java.util.Date date)
Constructs a GDate 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.
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GDate
public GDate(java.util.Calendar calendar)
Constructs a GDate based on a java.util.Calendar.If the calendar does not have some fields set, the same absence of information is reflected in the GDate. Note that java.util.GregorianCalendar fills in all fields as soon as any are fetched, so constructing a GDate with the same calendar object twice may result in a different GDate because of a changed calendar. Note that org.apache.xmlbeans.XmlCalendar is stable if you re-get a set field, so it does not have the same problem.
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GDate
public GDate(GDateSpecification gdate)
Constructs a GDate based on another GDateSpecification.
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Method Detail
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isImmutable
public final boolean isImmutable()
Returns true: all GDate instances are immutable.- Specified by:
isImmutable
in interfaceGDateSpecification
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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 interfaceGDateSpecification
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hasTimeZone
public final boolean hasTimeZone()
True if this date/time specification specifies a timezone.- Specified by:
hasTimeZone
in interfaceGDateSpecification
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hasYear
public final boolean hasYear()
True if this date/time specification specifies a year.- Specified by:
hasYear
in interfaceGDateSpecification
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hasMonth
public final boolean hasMonth()
True if this date/time specification specifies a month-of-year.- Specified by:
hasMonth
in interfaceGDateSpecification
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hasDay
public final boolean hasDay()
True if this date/time specification specifies a day-of-month.- Specified by:
hasDay
in interfaceGDateSpecification
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hasTime
public final boolean hasTime()
True if this date/time specification specifies a time-of-day.- Specified by:
hasTime
in interfaceGDateSpecification
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hasDate
public final boolean hasDate()
True if this date/time specification specifies a full date (year, month, day)- Specified by:
hasDate
in interfaceGDateSpecification
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getYear
public final int getYear()
Gets the year. Should be a four-digit year specification.- Specified by:
getYear
in interfaceGDateSpecification
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getMonth
public final int getMonth()
Gets the month-of-year. January is 1.- Specified by:
getMonth
in interfaceGDateSpecification
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getDay
public final int getDay()
Gets the day-of-month. The first day of each month is 1.- Specified by:
getDay
in interfaceGDateSpecification
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getHour
public final int getHour()
Gets the hour-of-day. Midnight is 0, and 11PM is 23.- Specified by:
getHour
in interfaceGDateSpecification
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getMinute
public final int getMinute()
Gets the minute-of-hour. Range from 0 to 59.- Specified by:
getMinute
in interfaceGDateSpecification
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getSecond
public final int getSecond()
Gets the second-of-minute. Range from 0 to 59.- Specified by:
getSecond
in interfaceGDateSpecification
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getFraction
public final java.math.BigDecimal getFraction()
Gets the fraction-of-second. Range from 0 (inclusive) to 1 (exclusive).- Specified by:
getFraction
in interfaceGDateSpecification
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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 interfaceGDateSpecification
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getTimeZoneHour
public final int getTimeZoneHour()
Gets the time zone hour. This is always positive: for the sign, look at getTimeZoneSign().- Specified by:
getTimeZoneHour
in interfaceGDateSpecification
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getTimeZoneMinute
public final int getTimeZoneMinute()
Gets the time zone minutes. This is always positive: for the sign, look at getTimeZoneSign().- Specified by:
getTimeZoneMinute
in interfaceGDateSpecification
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getMillisecond
public int getMillisecond()
Gets the rounded millisecond value. Range from 0 to 999- Specified by:
getMillisecond
in interfaceGDateSpecification
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canonicalString
public java.lang.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 interfaceGDateSpecification
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isValid
public boolean isValid()
True if this GDate corresponds to a valid gregorian date value in XML schema.- Specified by:
isValid
in interfaceGDateSpecification
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getJulianDate
public 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 interfaceGDateSpecification
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getCalendar
public XmlCalendar getCalendar()
Retrieves the value of the current time as anXmlCalendar
.XmlCalendar
is a subclass ofGregorianCalendar
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 theCalendar
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 interfaceGDateSpecification
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getDate
public java.util.Date getDate()
Retrieves the value of the current time as a java.util.Date instance.- Specified by:
getDate
in interfaceGDateSpecification
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compareToGDate
public 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)
- Specified by:
compareToGDate
in interfaceGDateSpecification
- Parameters:
datespec
- the date to compare against.
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getBuiltinTypeCode
public 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
, orSchemaType.BTC_TIME
.- Specified by:
getBuiltinTypeCode
in interfaceGDateSpecification
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add
public GDate add(GDurationSpecification duration)
Adds a duration to this GDate, and returns a new GDate.
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subtract
public GDate subtract(GDurationSpecification duration)
Adds a duration to this GDate, and returns a new GDate.
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equals
public boolean equals(java.lang.Object obj)
GDate is an immutable class, and equality is computed based on its canonical value.- Overrides:
equals
in classjava.lang.Object
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hashCode
public int hashCode()
Returns a hash code for this GDate.- Overrides:
hashCode
in classjava.lang.Object
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toString
public java.lang.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 interfaceGDateSpecification
- Overrides:
toString
in classjava.lang.Object
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