org.apache.river.outrigger

Class WatchersForTemplateClass

java.lang.Object

org.apache.river.outrigger.WatchersForTemplateClass

class WatchersForTemplateClass
extends Object

Holds a collection of TemplateHandles who's templates are all of exactly the same class. Unless otherwise noted all methods are thread safe. This method provides the linkage between TemplateHandles and TransitionWatchers and for the most part is not visible to the clients of either.

Field Summary

Fields

Modifier and Type	Field and Description
private Queue<TemplateHandle>	content All the templates we know about
private OutriggerServerImpl	owner The OutriggerServerImpl we belong to

Constructor Summary

Constructors

Constructor and Description
WatchersForTemplateClass(OutriggerServerImpl owner) Create a new WatchersForTemplateClass object associated with the specified TransitionWatchers object.

Method Summary

Modifier and Type	Method and Description
(package private) void	add(TransitionWatcher watcher, EntryRep template) Add a TransitionWatcher to the list of watchers looking for visibility transitions in entries that match the specified template.
(package private) void	collectInterested(Set<TransitionWatcher> set, EntryTransition transition, long ordinal) Iterate over the watchers associated with this object calling isInterested on each and if it returns true adding the watcher to the passed set.
(package private) void	reap(long now) Visit each TransitionWatcher and check to see if it has expired, removing it if it has.

Methods inherited from class java.lang.Object

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

Field Detail

content

private final Queue<TemplateHandle> content

All the templates we know about

owner

private final OutriggerServerImpl owner

The OutriggerServerImpl we belong to

Constructor Detail

WatchersForTemplateClass

WatchersForTemplateClass(OutriggerServerImpl owner)

Create a new WatchersForTemplateClass object associated with the specified TransitionWatchers object.

Parameters:

owner - The OutriggerServerImpl that this object will be a part of.

Throws:

NullPointerException - if owner is null.

Method Detail

add

void add(TransitionWatcher watcher,
         EntryRep template)

Add a TransitionWatcher to the list of watchers looking for visibility transitions in entries that match the specified template. Associates a TemplateHandle using TransitionWatcher.setTemplateHandle method.

Parameters:

watcher - The TransitionWatcher being added.

template - The EntryRep that represents the template of interest.

Throws:

NullPointerException - if either argument is null.

collectInterested

void collectInterested(Set<TransitionWatcher> set,
                       EntryTransition transition,
                       long ordinal)

Iterate over the watchers associated with this object calling isInterested on each and if it returns true adding the watcher to the passed set.

Parameters:

set - The set to accumulate interested watchers into.

transition - The transition being processed.

ordinal - The ordinal associated with transition.

Throws:

NullPointerException - if either argument is null.

reap

void reap(long now)

Visit each TransitionWatcher and check to see if it has expired, removing it if it has. Also reaps the FastList associated with this object.

Parameters:

now - an estimate of the current time expressed as milliseconds since the beginning of the epoch.