org.norther.tammi.core.converter
Interface DateConverter

All Superinterfaces:

ObjectConverter

All Known Implementing Classes:

DefaultDateConverter

public interface DateConverter
extends ObjectConverter

A converter for instances representing dates. Source classes to support: java.util.Date, longs as a primitive type or as java.lang.Long and org.norther.tammi.acorn.lang.LongDate, and strings as org.norther.tammi.acorn.lang.StringDate.

The styles can be given as a pattern to format or parse a date, time, or a datetime. The default is a datetime. If you want to have dates without time information or vice versa or want to have a different style for the date and time part, you'll need to add a qualifier in front of the style and put the style(s) in parantheses.

After the styles, you can also add a time zone id as defined in java.util.TimeZone.

Examples:

• "date()" - indicates a date with the default style.
• "date(long)" - indicates a date with the long style.
• "time(long,GMT)" - indicates a time with the default style in GMT.
• "datetime(medium)" - indicates a datetime with the medium style for both the date and the time parts.
• "datetime(short,full,America/Los_Angeles)" - indicates a datetime with the short style for the date and the full style for the time part in the U.S. Pacific time zone.

The pattern can also be a format understood by the java.text.SimpleDateFormat.

A special style "ISO-8601" indicates a date with the format yyyy-MM-dd and a time with the format HH:mm:ss. E.g. the pattern "datetime(ISO-8601)" is equal to the pattern "yyyy-MM-dd HH:mm:ss".

Author:

Marketta Priha

Field Summary

static String	DEFAULT_STYLE Default style.
static String	FULL_STYLE Full style.
static String	LONG_STYLE Long style.
static String	MEDIUM_STYLE Medium style.
static String	SHORT_STYLE Short style.

Method Summary

Set	classNameSet() Returns a read-only set of class names of defined patterns.
void	clearClassSpecificPatterns() Clears all class specific patterns.
void	clearLocalPatternChars() Clears all locale specific pattern chars.
String	getClassSpecificPattern(String className) Gets the class specific default date pattern.
DateFormat	getDateFormat(String pattern) Gets a date format for the specified pattern.
DateFormat	getDateFormat(String pattern, Locale locale) Gets a date format for the specified pattern and locale.
DateFormat	getDateFormat(String className, String pattern) Gets a date format for the specified class and pattern.
DateFormat	getDateFormat(String className, String pattern, Locale locale) Gets a date format for the specified class, pattern and locale.
String	getDefaultPattern() Gets the default date pattern.
String	getLocalPatternChars(Locale locale) Gets the locale specific pattern chars.
String	getTimeZoneId() Gets the default time zone to apply.
Set	patternLocaleSet() Returns a read-only set of locales with defined pattern chars.
void	removeClassSpecificPattern(String className) Removes the class specific default date pattern.
void	removeLocalPatternChars(Locale locale) Removes the locale specific pattern chars.
void	setClassSpecificPattern(String className, String pattern) Sets the class specific default date pattern.
void	setDefaultPattern(String pattern) Sets the default date pattern.
void	setLocalPatternChars(Locale locale, String chars) Sets the locale specific pattern chars.
void	setTimeZoneId(String id) Sets the default time zone to apply.
List	timeZoneIds() Returns a list of supported time zone ids.
Date	toDate(long msecs) Converts milliseconds to date.
long	toTime(Date date) Converts a date to milliseconds.

Methods inherited from interface org.norther.tammi.core.converter.ObjectConverter

getFormatPattern, getInstance, getInstance, getInstance, getLocalizedPattern, getResourceFinderName, isConversionSupported, setResourceFinderName, toString, toString, toString, toStrings, toStrings, toStrings

Field Detail

DEFAULT_STYLE

static final String DEFAULT_STYLE

Default style.

See Also:

Constant Field Values

SHORT_STYLE

static final String SHORT_STYLE

Short style.

See Also:

Constant Field Values

MEDIUM_STYLE

static final String MEDIUM_STYLE

Medium style.

See Also:

Constant Field Values

LONG_STYLE

static final String LONG_STYLE

Long style.

See Also:

Constant Field Values

FULL_STYLE

static final String FULL_STYLE

Full style.

See Also:

Constant Field Values

Method Detail

getDefaultPattern

String getDefaultPattern()

Gets the default date pattern.

Returns:

the default date pattern.

setDefaultPattern

void setDefaultPattern(String pattern)

Sets the default date pattern.

Parameters:

pattern - the default date pattern.

getClassSpecificPattern

String getClassSpecificPattern(String className)

Gets the class specific default date pattern.

Parameters:

className - the class name of the pattern.

Returns:

the class specific default date pattern.

setClassSpecificPattern

void setClassSpecificPattern(String className,
                             String pattern)

Sets the class specific default date pattern.

Parameters:

className - the class name of the pattern.

pattern - the class specific default date pattern.

removeClassSpecificPattern

void removeClassSpecificPattern(String className)

Removes the class specific default date pattern.

Parameters:

className - the class name of the pattern.

clearClassSpecificPatterns

void clearClassSpecificPatterns()

Clears all class specific patterns.

classNameSet

Set classNameSet()

Returns a read-only set of class names of defined patterns.

Returns:

a set of class names.

getLocalPatternChars

String getLocalPatternChars(Locale locale)

Gets the locale specific pattern chars.

Parameters:

locale - the locale.

Returns:

the pattern chars.

setLocalPatternChars

void setLocalPatternChars(Locale locale,
                          String chars)

Sets the locale specific pattern chars.

Parameters:

locale - the locale.

chars - the pattern chars.

removeLocalPatternChars

void removeLocalPatternChars(Locale locale)

Removes the locale specific pattern chars.

Parameters:

locale - the locale.

clearLocalPatternChars

void clearLocalPatternChars()

Clears all locale specific pattern chars.

patternLocaleSet

Set patternLocaleSet()

Returns a read-only set of locales with defined pattern chars.

Returns:

a set of locales.

getTimeZoneId

String getTimeZoneId()

Gets the default time zone to apply.

Returns:

the time zone id.

setTimeZoneId

void setTimeZoneId(String id)

Sets the default time zone to apply.

Note that this method changes the default time zone of the running JVM to the specified value and thus may interfere with other date functionality.

Parameters:

id - the time zone id.

timeZoneIds

List timeZoneIds()

Returns a list of supported time zone ids.

Returns:

a list of time zone ids.

getDateFormat

DateFormat getDateFormat(String pattern)

Gets a date format for the specified pattern.

Parameters:

pattern - the pattern.

Returns:

the requested date format.

See Also:

DateFormat

getDateFormat

DateFormat getDateFormat(String pattern,
                         Locale locale)

Gets a date format for the specified pattern and locale.

Parameters:

pattern - the pattern.

locale - the locale.

Returns:

the requested date format.

See Also:

DateFormat

getDateFormat

DateFormat getDateFormat(String className,
                         String pattern)

Gets a date format for the specified class and pattern.

Parameters:

className - the name of the class to format.

pattern - the pattern.

Returns:

the requested date format.

See Also:

DateFormat

getDateFormat

DateFormat getDateFormat(String className,
                         String pattern,
                         Locale locale)

Gets a date format for the specified class, pattern and locale.

Parameters:

className - the name of the class to format.

pattern - the pattern.

locale - the locale.

Returns:

the requested date format.

See Also:

DateFormat

toTime

long toTime(Date date)

Converts a date to milliseconds.

Parameters:

date - the date.

Returns:

the date in millis.

toDate

Date toDate(long msecs)

Converts milliseconds to date.

Parameters:

msecs - the millis.

Returns:

the millis as date.