public class DateValidator extends AbstractCalendarValidator
Date Validation and Conversion routines (java.util.Date).
This validator provides a number of methods for validating/converting
a String date value to a java.util.Date using
java.text.DateFormat to parse either:
LocaleLocaleLocaleLocaleFor each of the above mechanisms, conversion method (i.e the
validate methods) implementations are provided which
either use the default TimeZone or allow the
TimeZone to be specified.
Use one of the isValid() methods to just validate or
one of the validate() methods to validate and receive a
converted Date value.
Implementations of the validate() method are provided
to create Date objects for different time zones
if the system default is not appropriate.
Once a value has been successfully converted the following methods can be used to perform various date comparison checks:
compareDates() compares the day, month and
year of two dates, returning 0, -1 or +1 indicating
whether the first date is equal, before or after the second.compareWeeks() compares the week and
year of two dates, returning 0, -1 or +1 indicating
whether the first week is equal, before or after the second.compareMonths() compares the month and
year of two dates, returning 0, -1 or +1 indicating
whether the first month is equal, before or after the second.compareQuarters() compares the quarter and
year of two dates, returning 0, -1 or +1 indicating
whether the first quarter is equal, before or after the second.compareYears() compares the
year of two dates, returning 0, -1 or +1 indicating
whether the first year is equal, before or after the second.So that the same mechanism used for parsing an input value
for validation can be used to format output, corresponding
format() methods are also provided. That is you can
format either:
LocaleLocale| Constructor and Description |
|---|
DateValidator()
Construct a strict instance with short
date style.
|
DateValidator(boolean strict,
int dateStyle)
Construct an instance with the specified strict
and date style parameters.
|
| Modifier and Type | Method and Description |
|---|---|
int |
compareDates(Date value,
Date compare,
TimeZone timeZone)
Compare Dates (day, month and year - not time).
|
int |
compareMonths(Date value,
Date compare,
TimeZone timeZone)
Compare Months (month and year).
|
int |
compareQuarters(Date value,
Date compare,
TimeZone timeZone)
Compare Quarters (quarter and year).
|
int |
compareQuarters(Date value,
Date compare,
TimeZone timeZone,
int monthOfFirstQuarter)
Compare Quarters (quarter and year).
|
int |
compareWeeks(Date value,
Date compare,
TimeZone timeZone)
Compare Weeks (week and year).
|
int |
compareYears(Date value,
Date compare,
TimeZone timeZone)
Compare Years.
|
static DateValidator |
getInstance()
Return a singleton instance of this validator.
|
protected Object |
processParsedValue(Object value,
Format formatter)
Returns the parsed
Date unchanged. |
Date |
validate(String value)
Validate/convert a
Date using the default
Locale and TimeZone. |
Date |
validate(String value,
Locale locale)
Validate/convert a
Date using the specified
Locale and default TimeZone. |
Date |
validate(String value,
Locale locale,
TimeZone timeZone)
Validate/convert a
Date using the specified
Locale and TimeZone. |
Date |
validate(String value,
String pattern)
Validate/convert a
Date using the specified
pattern and default TimeZone. |
Date |
validate(String value,
String pattern,
Locale locale)
Validate/convert a
Date using the specified pattern
and Locale and the default TimeZone. |
Date |
validate(String value,
String pattern,
Locale locale,
TimeZone timeZone)
Validate/convert a
Date using the specified
pattern, and Locale and TimeZone. |
Date |
validate(String value,
String pattern,
TimeZone timeZone)
Validate/convert a
Date using the specified
pattern and TimeZone. |
Date |
validate(String value,
TimeZone timeZone)
Validate/convert a
Date using the specified
TimeZone and default Locale. |
compare, compareQuarters, compareTime, format, format, format, format, format, format, getFormat, getFormat, isValid, parsepublic DateValidator()
public DateValidator(boolean strict,
int dateStyle)
strict - true if strict
Format parsing should be used.dateStyle - the date style to use for Locale validation.public static DateValidator getInstance()
public Date validate(String value)
Validate/convert a Date using the default
Locale and TimeZone.
value - The value validation is being performed on.Date if valid or null
if invalid.public Date validate(String value, TimeZone timeZone)
Validate/convert a Date using the specified
TimeZone and default Locale.
value - The value validation is being performed on.timeZone - The Time Zone used to parse the date, system default if null.Date if valid or null if invalid.public Date validate(String value, String pattern)
Validate/convert a Date using the specified
pattern and default TimeZone.
value - The value validation is being performed on.pattern - The pattern used to validate the value against, or the
default for the Locale if null.Date if valid or null if invalid.public Date validate(String value, String pattern, TimeZone timeZone)
Validate/convert a Date using the specified
pattern and TimeZone.
value - The value validation is being performed on.pattern - The pattern used to validate the value against, or the
default for the Locale if null.timeZone - The Time Zone used to parse the date, system default if null.Date if valid or null if invalid.public Date validate(String value, Locale locale)
Validate/convert a Date using the specified
Locale and default TimeZone.
value - The value validation is being performed on.locale - The locale to use for the date format, system default if null.Date if valid or null if invalid.public Date validate(String value, Locale locale, TimeZone timeZone)
Validate/convert a Date using the specified
Locale and TimeZone.
value - The value validation is being performed on.locale - The locale to use for the date format, system default if null.timeZone - The Time Zone used to parse the date, system default if null.Date if valid or null if invalid.public Date validate(String value, String pattern, Locale locale)
Validate/convert a Date using the specified pattern
and Locale and the default TimeZone.
value - The value validation is being performed on.pattern - The pattern used to validate the value against, or the
default for the Locale if null.locale - The locale to use for the date format, system default if null.Date if valid or null if invalid.public Date validate(String value, String pattern, Locale locale, TimeZone timeZone)
Validate/convert a Date using the specified
pattern, and Locale and TimeZone.
value - The value validation is being performed on.pattern - The pattern used to validate the value against, or the
default for the Locale if null.locale - The locale to use for the date format, system default if null.timeZone - The Time Zone used to parse the date, system default if null.Date if valid or null if invalid.public int compareDates(Date value, Date compare, TimeZone timeZone)
Compare Dates (day, month and year - not time).
value - The Calendar value to check.compare - The Calendar to compare the value to.timeZone - The Time Zone used to compare the dates, system default if null.public int compareWeeks(Date value, Date compare, TimeZone timeZone)
Compare Weeks (week and year).
value - The Date value to check.compare - The Date to compare the value to.timeZone - The Time Zone used to compare the dates, system default if null.public int compareMonths(Date value, Date compare, TimeZone timeZone)
Compare Months (month and year).
value - The Date value to check.compare - The Date to compare the value to.timeZone - The Time Zone used to compare the dates, system default if null.public int compareQuarters(Date value, Date compare, TimeZone timeZone)
Compare Quarters (quarter and year).
value - The Date value to check.compare - The Date to compare the value to.timeZone - The Time Zone used to compare the dates, system default if null.public int compareQuarters(Date value, Date compare, TimeZone timeZone, int monthOfFirstQuarter)
Compare Quarters (quarter and year).
value - The Date value to check.compare - The Date to compare the value to.timeZone - The Time Zone used to compare the dates, system default if null.monthOfFirstQuarter - The month that the first quarter starts.public int compareYears(Date value, Date compare, TimeZone timeZone)
Compare Years.
value - The Date value to check.compare - The Date to compare the value to.timeZone - The Time Zone used to compare the dates, system default if null.protected Object processParsedValue(Object value, Format formatter)
Returns the parsed Date unchanged.
processParsedValue in class AbstractCalendarValidatorvalue - The parsed Date object created.formatter - The Format used to parse the value with.Calendar.Copyright © 2002–2020 The Apache Software Foundation. All rights reserved.