org.directwebremoting.dwrp
Class JettyContinuationSleeper

java.lang.Object
  org.directwebremoting.dwrp.JettyContinuationSleeper

public class JettyContinuationSleeper
extends java.lang.Object

A Sleeper that works with Jetty Continuations

Author:

Joe Walker [joe at getahead dot ltd dot uk]

Field Summary

static java.lang.String

ATTRIBUTE_JETTY_CONDUIT We remember the notify conduit so we can reuse it

Constructor Summary

JettyContinuationSleeper(javax.servlet.http.HttpServletRequest request)

Method Summary

void	goToSleep(java.lang.Runnable awakening) 'halt' the current execution in some way.
static boolean	isRestart(javax.servlet.http.HttpServletRequest request) Is this a restarted continuation?
static void	restart(javax.servlet.http.HttpServletRequest request) Act on a restarted continuation by executing the onAwakening action
void	wakeUp() This method should attempt to resume the execution.

Methods inherited from class java.lang.Object

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

Field Detail

ATTRIBUTE_JETTY_CONDUIT

public static final java.lang.String ATTRIBUTE_JETTY_CONDUIT

We remember the notify conduit so we can reuse it

See Also:

Constant Field Values

Constructor Detail

JettyContinuationSleeper

public JettyContinuationSleeper(javax.servlet.http.HttpServletRequest request)

Parameters:

request - The request into which we store this as an attribute

Method Detail

isRestart

public static boolean isRestart(javax.servlet.http.HttpServletRequest request)

Is this a restarted continuation?

Parameters:

request - The request on which a Sleeper might be stored

Returns:

true if this request is from a restarted Contiuation

restart

public static void restart(javax.servlet.http.HttpServletRequest request)

Act on a restarted continuation by executing the onAwakening action

Parameters:

request - The request on which the Sleeper is stored

goToSleep

public void goToSleep(java.lang.Runnable awakening)

'halt' the current execution in some way. This method should be the last meaningful thing that is done on a request, and work that needs to be done before completion should be done in a Runnable so the system can schedule it at an appropriate time.

Parameters:

awakening - The action to take when wakeUp() is called

wakeUp

public void wakeUp()

This method should attempt to resume the execution. It is possible that this method will be called more than once at the same time so Sleepers should be prepared take steps to be woken only once.