Package org.apache.tapestry5.internal.services

Class CheckForUpdatesFilter

java.lang.Object

org.apache.tapestry5.internal.services.CheckForUpdatesFilter

All Implemented Interfaces:

RequestFilter

public class CheckForUpdatesFilter
extends Object
implements RequestFilter

Implements a barrier that periodically asks the UpdateListenerHub to check for updates to files. The UpdateListenerHub is invoked from a write method, meaning that when it is called, all other threads will be blocked.

Constructor Summary

Constructors

Constructor	Description
CheckForUpdatesFilter(UpdateListenerHub updateListenerHub, long checkInterval, long updateTimeout)

Method Summary

Modifier and Type	Method	Description
boolean	service(Request request, Response response, RequestHandler handler)	Returns true if the request has been handled, false otherwise.

Methods inherited from class java.lang.Object

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

Constructor Detail

CheckForUpdatesFilter

public CheckForUpdatesFilter(UpdateListenerHub updateListenerHub,
                             @Symbol("tapestry.file-check-interval") @IntermediateType(TimeInterval.class)
                             long checkInterval,
                             @Symbol("tapestry.file-check-update-timeout") @IntermediateType(TimeInterval.class)
                             long updateTimeout)

Parameters:

updateListenerHub - invoked, at intervals, to spur the process of detecting changes

checkInterval - interval, in milliseconds, between checks

updateTimeout - time, in milliseconds, to wait to obtain update lock.

Method Detail

service

public boolean service(Request request,
                       Response response,
                       RequestHandler handler)
                throws IOException

Description copied from interface: RequestFilter

Returns true if the request has been handled, false otherwise.

Specified by:

service in interface RequestFilter

Throws:

IOException