Package org.apache.commons.validator.routines

Class CalendarValidator

java.lang.Object
org.apache.commons.validator.routines.AbstractFormatValidator
org.apache.commons.validator.routines.AbstractCalendarValidator
org.apache.commons.validator.routines.CalendarValidator
All Implemented Interfaces:
Serializable
public class CalendarValidator extends AbstractCalendarValidator

Calendar Validation and Conversion routines (java.util.Calendar).

This validator provides a number of methods for validating/converting a String date value to a java.util.Calendar using java.text.DateFormat to parse either:

  • using the default format for the default Locale
  • using a specified pattern with the default Locale
  • using the default format for a specified Locale
  • using a specified pattern with a specified Locale

For 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 Calendar value.

Implementations of the validate() method are provided to create Calendar objects for different time zones if the system default is not appropriate.

Alternatively the CalendarValidator's adjustToTimeZone() method can be used to adjust the TimeZone of the Calendar object afterwards.

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 calendars, 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 calendars, 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 calendars, 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 calendars, returning 0, -1 or +1 indicating whether the first quarter is equal, before or after the second.
  • compareYears() compares the year of two calendars, 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:

  • using a specified pattern
  • using the format for a specified Locale
  • using the format for the default Locale
Since:
1.3.0
See Also:

  • Constructor Details

    • CalendarValidator

      public CalendarValidator()
      Constructs a strict instance with short date style.

    • CalendarValidator

      public CalendarValidator(boolean strict, int dateStyle)
      Constructs an instance with the specified strict and date style parameters.
      Parameters:
      strict - true if strict Format parsing should be used.
      dateStyle - the date style to use for Locale validation.

  • Method Details

    • adjustToTimeZone

      public static void adjustToTimeZone(Calendar value, TimeZone timeZone)

      Adjusts a Calendar's value to a different TimeZone.

      Parameters:
      value - The value to adjust.
      timeZone - The new time zone to use to adjust the Calendar to.

    • getInstance

      public static CalendarValidator getInstance()
      Gets the singleton instance of this validator.
      Returns:
      A singleton instance of the CalendarValidator.

    • compareDates

      public int compareDates(Calendar value, Calendar compare)

      Compare Dates (day, month and year - not time).

      Parameters:
      value - The Calendar value to check.
      compare - The Calendar to compare the value to.
      Returns:
      Zero if the dates are equal, -1 if first date is less than the seconds and +1 if the first date is greater than.

    • compareMonths

      public int compareMonths(Calendar value, Calendar compare)

      Compare Months (month and year).

      Parameters:
      value - The Calendar value to check.
      compare - The Calendar to compare the value to.
      Returns:
      Zero if the months are equal, -1 if first parameter's month is less than the seconds and +1 if the first parameter's month is greater than.

    • compareQuarters

      public int compareQuarters(Calendar value, Calendar compare)

      Compare Quarters (quarter and year).

      Parameters:
      value - The Calendar value to check.
      compare - The Calendar to check the value against.
      Returns:
      Zero if the quarters are equal, -1 if first parameter's quarter is less than the seconds and +1 if the first parameter's quarter is greater than.

    • compareQuarters

      public int compareQuarters(Calendar value, Calendar compare, int monthOfFirstQuarter)

      Compare Quarters (quarter and year).

      Overrides:
      compareQuarters in class AbstractCalendarValidator
      Parameters:
      value - The Calendar value to check.
      compare - The Calendar to compare the value to.
      monthOfFirstQuarter - The month that the first quarter starts.
      Returns:
      Zero if the quarters are equal, -1 if first parameter's quarter is less than the seconds and +1 if the first parameter's quarter is greater than.

    • compareWeeks

      public int compareWeeks(Calendar value, Calendar compare)

      Compare Weeks (week and year).

      Parameters:
      value - The Calendar value to check.
      compare - The Calendar to compare the value to.
      Returns:
      Zero if the weeks are equal, -1 if first parameter's week is less than the seconds and +1 if the first parameter's week is greater than.

    • compareYears

      public int compareYears(Calendar value, Calendar compare)

      Compare Years.

      Parameters:
      value - The Calendar value to check.
      compare - The Calendar to compare the value to.
      Returns:
      Zero if the years are equal, -1 if first parameter's year is less than the seconds and +1 if the first parameter's year is greater than.

    • processParsedValue

      protected Object processParsedValue(Object value, Format formatter)

      Convert the parsed Date to a Calendar.

      Specified by:
      processParsedValue in class AbstractCalendarValidator
      Parameters:
      value - The parsed Date object created.
      formatter - The Format used to parse the value with.
      Returns:
      The parsed value converted to a Calendar.

    • validate

      public Calendar validate(String value)

      Validate/convert a Calendar using the default Locale and TimeZone.

      Parameters:
      value - The value validation is being performed on.
      Returns:
      The parsed Calendar if valid or null if invalid.

    • validate

      public Calendar validate(String value, Locale locale)

      Validate/convert a Calendar using the specified Locale and default TimeZone.

      Parameters:
      value - The value validation is being performed on.
      locale - The locale to use for the date format, system default if null.
      Returns:
      The parsed Calendar if valid or null if invalid.

    • validate

      public Calendar validate(String value, Locale locale, TimeZone timeZone)

      Validate/convert a Calendar using the specified Locale and TimeZone.

      Parameters:
      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.
      Returns:
      The parsed Calendar if valid or null if invalid.

    • validate

      public Calendar validate(String value, String pattern)

      Validate/convert a Calendar using the specified pattern and default TimeZone.

      Parameters:
      value - The value validation is being performed on.
      pattern - The pattern used to validate the value against.
      Returns:
      The parsed Calendar if valid or null if invalid.

    • validate

      public Calendar validate(String value, String pattern, Locale locale)

      Validate/convert a Calendar using the specified pattern and Locale and the default TimeZone.

      Parameters:
      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.
      Returns:
      The parsed Calendar if valid or null if invalid.

    • validate

      public Calendar validate(String value, String pattern, Locale locale, TimeZone timeZone)

      Validate/convert a Calendar using the specified pattern, and Locale and TimeZone.

      Parameters:
      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.
      Returns:
      The parsed Calendar if valid or null if invalid.

    • validate

      public Calendar validate(String value, String pattern, TimeZone timeZone)

      Validate/convert a Calendar using the specified pattern and TimeZone.

      Parameters:
      value - The value validation is being performed on.
      pattern - The pattern used to validate the value against.
      timeZone - The Time Zone used to parse the date, system default if null.
      Returns:
      The parsed Calendar if valid or null if invalid.

    • validate

      public Calendar validate(String value, TimeZone timeZone)

      Validate/convert a Calendar using the specified TimeZone and default Locale.

      Parameters:
      value - The value validation is being performed on.
      timeZone - The Time Zone used to parse the date, system default if null.
      Returns:
      The parsed Calendar if valid or null if invalid.