org.glassfish.grizzly.http.util

Class FastHttpDateFormat

java.lang.Object

org.glassfish.grizzly.http.util.FastHttpDateFormat

public final class FastHttpDateFormat
extends java.lang.Object

Utility class to generate HTTP dates.

Author:

Gustav Trede, Remy Maucherat

Field Summary

Fields

Modifier and Type	Field and Description
protected static int	CACHE_SIZE
protected static java.lang.String	currentDate Current formatted date.
protected static java.util.concurrent.ConcurrentHashMap<java.lang.Long,java.lang.String>	formatCache Formatter cache.
protected static java.lang.ThreadLocal	FORMATS ThreadLocal for the set of SimpleDateFormat formats to use in getDateHeader().
protected static java.util.TimeZone	GMT_TIME_ZONE
protected static long	nextGeneration Instant on which the currentDate object was generated.
protected static java.util.concurrent.ConcurrentHashMap<java.lang.String,java.lang.Long>	parseCache Parser cache.

Constructor Summary

Constructors

Constructor and Description
FastHttpDateFormat()

Method Summary

Methods

Modifier and Type	Method and Description
static java.lang.String	formatDate(long value, java.text.DateFormat threadLocalFormat) Get the HTTP format of the specified date. http spec only requre second precision http://tools.ietf.org/html/rfc2616#page-20 therefore we dont use the millisecond precision , but second .
static java.lang.String	getCurrentDate() Get the current date in HTTP format.
static long	parseDate(java.lang.String value, java.text.DateFormat[] threadLocalformats) Try to parse the given date as a HTTP date.

Methods inherited from class java.lang.Object

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

Field Detail

CACHE_SIZE

protected static final int CACHE_SIZE

See Also:

Constant Field Values

GMT_TIME_ZONE

protected static final java.util.TimeZone GMT_TIME_ZONE

FORMATS

protected static final java.lang.ThreadLocal FORMATS

ThreadLocal for the set of SimpleDateFormat formats to use in getDateHeader(). GMT timezone - all HTTP dates are on GMT

nextGeneration

protected static volatile long nextGeneration

Instant on which the currentDate object was generated.

currentDate

protected static volatile java.lang.String currentDate

Current formatted date.

formatCache

protected static final java.util.concurrent.ConcurrentHashMap<java.lang.Long,java.lang.String> formatCache

Formatter cache.

parseCache

protected static final java.util.concurrent.ConcurrentHashMap<java.lang.String,java.lang.Long> parseCache

Parser cache.

Constructor Detail

FastHttpDateFormat

public FastHttpDateFormat()

Method Detail

getCurrentDate

public static java.lang.String getCurrentDate()

Get the current date in HTTP format.

formatDate

public static java.lang.String formatDate(long value,
                          java.text.DateFormat threadLocalFormat)

Get the HTTP format of the specified date.
http spec only requre second precision http://tools.ietf.org/html/rfc2616#page-20
therefore we dont use the millisecond precision , but second . truncation is done in the same way for second precision in SimpleDateFormat:
(999 millisec. = 0 sec.)

Parameters:

value - in milli-seconds

threadLocalFormat - the DateFormat used if cache value was not found

parseDate

public static long parseDate(java.lang.String value,
             java.text.DateFormat[] threadLocalformats)

Try to parse the given date as a HTTP date.