com.helger.commons.datetime

Class PDTWebDateHelper

java.lang.Object

com.helger.commons.datetime.PDTWebDateHelper

@Immutable
public final class PDTWebDateHelper
extends Object

A helper class that parses Dates out of Strings with date time in RFC822 and W3CDateTime formats plus the variants Atom (0.3) and RSS (0.9, 0.91, 0.92, 0.93, 0.94, 1.0 and 2.0) specificators added to those formats.
It uses the JDK java.text.SimpleDateFormat class attempting the parse using a mask for each one of the possible formats.
Original work Copyright 2004 Sun Microsystems, Inc.

Author:

Alejandro Abdelnur (original; mainly the formatting masks), Philip Helger (major modification)

Field Summary

Fields

Modifier and Type	Field and Description
static DateTimeFormatter	XSD_DATE_TIME

Method Summary

Modifier and Type	Method and Description
static WithZoneId	extractDateTimeZone(String sDate) Extract the time zone from the passed string.
static String	getAsStringRFC822(LocalDateTime aDateTime) create a RFC822 representation of a date time using UTC date time zone.
static String	getAsStringRFC822(OffsetDateTime aDateTime) create a RFC822 representation of a date.
static String	getAsStringRFC822(ZonedDateTime aDateTime) create a RFC822 representation of a date.
static String	getAsStringW3C(LocalDateTime aDateTime) create a W3C Date Time representation of a date.
static String	getAsStringW3C(OffsetDateTime aDateTime) create a W3C Date Time representation of a date time using UTC date time zone.
static String	getAsStringW3C(ZonedDateTime aDateTime) create a W3C Date Time representation of a date time using UTC date time zone.
static String	getAsStringXSD(LocalDate aLD)
static String	getAsStringXSD(LocalDateTime aLDT)
static String	getAsStringXSD(ZonedDateTime aZDT)
static String	getAsStringXSD(ZoneId aZoneID, ZonedDateTime aZDT)
static String	getCurrentDateTimeAsStringRFC822()
static String	getCurrentDateTimeAsStringW3C()
static ZonedDateTime	getDateTimeFromRFC822(String sDate) Parses a Date out of a String with a date in RFC822 format.
static OffsetDateTime	getDateTimeFromW3C(String sDate) Parses a Date out of a String with a date in W3C date-time format.
static ZonedDateTime	getDateTimeFromW3COrRFC822(String sDate) Parses a Date out of a String with a date in W3C date-time format or in a RFC822 format.
static ZonedDateTime	getDateTimeFromXSD(String sValue)
static ZonedDateTime	getDateTimeFromXSD(String sValue, ZoneId aZoneID)
static LocalDate	getLocalDateFromXSD(String sValue)
static LocalDateTime	getLocalDateTimeFromW3COrRFC822(String sDate) Parses a Date out of a String with a date in W3C date-time format or in a RFC822 format.
static LocalDateTime	getLocalDateTimeFromXSD(String sValue)
static DateTimeFormatter	getXSDFormatterDate()
static DateTimeFormatter	getXSDFormatterDateTime(ZoneId aZoneID)
static OffsetDateTime	parseOffsetDateTimeUsingMask(PDTMask<?>[] aMasks, String sDate) Parses a Date out of a string using an array of masks.
static ZonedDateTime	parseZonedDateTimeUsingMask(PDTMask<?>[] aMasks, String sDate, ZoneId aDTZ) Parses a Date out of a string using an array of masks.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

XSD_DATE_TIME

public static final DateTimeFormatter XSD_DATE_TIME

Method Detail

parseOffsetDateTimeUsingMask

@Nullable
public static OffsetDateTime parseOffsetDateTimeUsingMask(@Nonnull
                                                                     PDTMask<?>[] aMasks,
                                                                     @Nonnull @Nonempty
                                                                     String sDate)

Parses a Date out of a string using an array of masks. It uses the masks in order until one of them succeeds or all fail.

Parameters:

aMasks - array of masks to use for parsing the string

sDate - string to parse for a date.

Returns:

the Date represented by the given string using one of the given masks. It returns null if it was not possible to parse the the string with any of the masks.

parseZonedDateTimeUsingMask

@Nullable
public static ZonedDateTime parseZonedDateTimeUsingMask(@Nonnull
                                                                   PDTMask<?>[] aMasks,
                                                                   @Nonnull @Nonempty
                                                                   String sDate,
                                                                   @Nullable
                                                                   ZoneId aDTZ)

Parses a Date out of a string using an array of masks. It uses the masks in order until one of them succeeds or all fail.

Parameters:

aMasks - array of masks to use for parsing the string

sDate - string to parse for a date.

aDTZ - The date/time zone to use. Optional.

Returns:

the Date represented by the given string using one of the given masks. It returns null if it was not possible to parse the the string with any of the masks.

extractDateTimeZone

@Nonnull
public static WithZoneId extractDateTimeZone(@Nonnull
                                                       String sDate)

Extract the time zone from the passed string. UTC and GMT are supported.

Parameters:

sDate - The date string.

Returns:

A non-null WithZoneId, where the remaining string to be parsed (never null) and and the extracted time zone (may be null) are contained.

getDateTimeFromRFC822

@Nullable
public static ZonedDateTime getDateTimeFromRFC822(@Nullable
                                                             String sDate)

Parses a Date out of a String with a date in RFC822 format.
It parsers the following formats:

• "EEE, dd MMM uuuu HH:mm:ss z"
• "EEE, dd MMM uuuu HH:mm z"
• "EEE, dd MMM uu HH:mm:ss z"
• "EEE, dd MMM uu HH:mm z"
• "dd MMM uuuu HH:mm:ss z"
• "dd MMM uuuu HH:mm z"
• "dd MMM uu HH:mm:ss z"
• "dd MMM uu HH:mm z"

Refer to the java.text.SimpleDateFormat javadocs for details on the format of each element.

Parameters:

sDate - string to parse for a date. May be null.

Returns:

the Date represented by the given RFC822 string. It returns null if it was not possible to parse the given string into a ZonedDateTime or if the passed String was null.

getDateTimeFromW3C

@Nullable
public static OffsetDateTime getDateTimeFromW3C(@Nullable
                                                           String sDate)

Parses a Date out of a String with a date in W3C date-time format.
It parsers the following formats:

• "uuuu-MM-dd'T'HH:mm:ssz"
• "uuuu-MM-dd'T'HH:mmz"
• "uuuu-MM-dd"
• "uuuu-MM"
• "uuuu"

Refer to the java.text.SimpleDateFormat javadocs for details on the format of each element.

Parameters:

sDate - string to parse for a date. May be null.

Returns:

the Date represented by the given W3C date-time string. It returns null if it was not possible to parse the given string into a ZonedDateTime or if the input string was null.

getDateTimeFromW3COrRFC822

@Nullable
public static ZonedDateTime getDateTimeFromW3COrRFC822(@Nullable
                                                                  String sDate)

Parses a Date out of a String with a date in W3C date-time format or in a RFC822 format.

Parameters:

sDate - string to parse for a date.

Returns:

the Date represented by the given W3C date-time string. It returns null if it was not possible to parse the given string into a Date.

getLocalDateTimeFromW3COrRFC822

@Nullable
public static LocalDateTime getLocalDateTimeFromW3COrRFC822(@Nullable
                                                                       String sDate)

Parses a Date out of a String with a date in W3C date-time format or in a RFC822 format.

Parameters:

sDate - string to parse for a date.

Returns:

the Date represented by the given W3C date-time string. It returns null if it was not possible to parse the given string into a Date.

getAsStringRFC822

@Nullable
public static String getAsStringRFC822(@Nullable
                                                  ZonedDateTime aDateTime)

create a RFC822 representation of a date.

Parameters:

aDateTime - Date to print. May be null.

Returns:

the RFC822 represented by the given Date. null if the parameter is null.

getAsStringRFC822

@Nullable
public static String getAsStringRFC822(@Nullable
                                                  OffsetDateTime aDateTime)

create a RFC822 representation of a date.

Parameters:

aDateTime - Date to print. May be null.

Returns:

the RFC822 represented by the given Date. null if the parameter is null.

getAsStringRFC822

@Nullable
public static String getAsStringRFC822(@Nullable
                                                  LocalDateTime aDateTime)

create a RFC822 representation of a date time using UTC date time zone.

Parameters:

aDateTime - Date to print. May be null.

Returns:

the RFC822 represented by the given Date. null if the parameter is null.

getAsStringW3C

@Nullable
public static String getAsStringW3C(@Nullable
                                               ZonedDateTime aDateTime)

create a W3C Date Time representation of a date time using UTC date time zone.

Parameters:

aDateTime - Date to print. May not be null.

Returns:

the W3C Date Time represented by the given Date.

getAsStringW3C

@Nullable
public static String getAsStringW3C(@Nullable
                                               OffsetDateTime aDateTime)

create a W3C Date Time representation of a date time using UTC date time zone.

Parameters:

aDateTime - Date to print. May not be null.

Returns:

the W3C Date Time represented by the given Date.

getAsStringW3C

@Nullable
public static String getAsStringW3C(@Nullable
                                               LocalDateTime aDateTime)

create a W3C Date Time representation of a date.

Parameters:

aDateTime - Date to print. May not be null.

Returns:

the W3C Date Time represented by the given Date.

getCurrentDateTimeAsStringRFC822

@Nonnull
public static String getCurrentDateTimeAsStringRFC822()

Returns:

The current date time formatted using RFC 822

getCurrentDateTimeAsStringW3C

@Nonnull
public static String getCurrentDateTimeAsStringW3C()

Returns:

The current date time formatted using W3C format

getXSDFormatterDateTime

@Nonnull
public static DateTimeFormatter getXSDFormatterDateTime(@Nonnull
                                                                  ZoneId aZoneID)

getDateTimeFromXSD

@Nullable
public static ZonedDateTime getDateTimeFromXSD(@Nullable
                                                          String sValue)

getDateTimeFromXSD

@Nullable
public static ZonedDateTime getDateTimeFromXSD(@Nullable
                                                          String sValue,
                                                          @Nonnull
                                                          ZoneId aZoneID)

getLocalDateTimeFromXSD

@Nullable
public static LocalDateTime getLocalDateTimeFromXSD(@Nullable
                                                               String sValue)

getAsStringXSD

@Nullable
public static String getAsStringXSD(@Nullable
                                               ZonedDateTime aZDT)

getAsStringXSD

@Nullable
public static String getAsStringXSD(@Nonnull
                                               ZoneId aZoneID,
                                               @Nullable
                                               ZonedDateTime aZDT)

getAsStringXSD

@Nullable
public static String getAsStringXSD(@Nullable
                                               LocalDateTime aLDT)

getXSDFormatterDate

@Nonnull
public static DateTimeFormatter getXSDFormatterDate()

getLocalDateFromXSD

@Nullable
public static LocalDate getLocalDateFromXSD(@Nullable
                                                       String sValue)

getAsStringXSD

@Nullable
public static String getAsStringXSD(@Nullable
                                               LocalDate aLD)