org.springframework.security.web.savedrequest
Class FastHttpDateFormat

java.lang.Object
  org.springframework.security.web.savedrequest.FastHttpDateFormat

public class FastHttpDateFormat
extends Object

Utility class to generate HTTP dates.

This class is based on code in Apache Tomcat.

Version:

$Id: FastHttpDateFormat.java 3543 2009-03-26 07:18:36Z ltaylor $

Author:

Remy Maucherat, Andrey Grebnev

Field Summary

protected static String	currentDate Current formatted date.
protected static long	currentDateGenerated Instant on which the currentDate object was generated.
protected static SimpleDateFormat	format HTTP date format.
protected static HashMap<Long,String>	formatCache Formatter cache.
protected static SimpleDateFormat[]	formats The set of SimpleDateFormat formats to use in getDateHeader().
protected static TimeZone	gmtZone GMT time zone - all HTTP dates are on GMT
protected static HashMap<String,Long>	parseCache Parser cache.

Constructor Summary

FastHttpDateFormat()

Method Summary

static String	formatDate(long value, DateFormat threadLocalformat) Formats a specified date to HTTP format.
static String	getCurrentDate() Gets the current date in HTTP format.
static long	parseDate(String value, DateFormat[] threadLocalformats) Tries to parse the given date as an HTTP date.

Methods inherited from class java.lang.Object

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

Field Detail

format

protected static final SimpleDateFormat format

HTTP date format.

formats

protected static final SimpleDateFormat[] formats

The set of SimpleDateFormat formats to use in getDateHeader().

gmtZone

protected static final TimeZone gmtZone

GMT time zone - all HTTP dates are on GMT

currentDateGenerated

protected static long currentDateGenerated

Instant on which the currentDate object was generated.

currentDate

protected static String currentDate

Current formatted date.

formatCache

protected static final HashMap<Long,String> formatCache

Formatter cache.

parseCache

protected static final HashMap<String,Long> parseCache

Parser cache.

Constructor Detail

FastHttpDateFormat

public FastHttpDateFormat()

Method Detail

formatDate

public static final String formatDate(long value,
                                      DateFormat threadLocalformat)

Formats a specified date to HTTP format. If local format is not null, it's used instead.

Parameters:

value - Date value to format

threadLocalformat - The format to use (or null -- then HTTP format will be used)

Returns:

Formatted date

getCurrentDate

public static final String getCurrentDate()

Gets the current date in HTTP format.

Returns:

Current date in HTTP format

parseDate

public static final long parseDate(String value,
                                   DateFormat[] threadLocalformats)

Tries to parse the given date as an HTTP date. If local format list is not null, it's used instead.

Parameters:

value - The string to parse

threadLocalformats - Array of formats to use for parsing. If null, HTTP formats are used.

Returns:

Parsed date (or -1 if error occurred)