connect
Class FacetChannelAdmin

java.lang.Object
  |
  +--connect.FacetChannelAdmin

All Implemented Interfaces:

Serializable

public class FacetChannelAdmin

extends Object

implements Serializable

This class is intended to be a singleton provider of the FACET EventChannel object. This maintains that there should be one EventChannel per JVM. Although it is possible, no EventChannel should be created outside of this by any type of component for the purposes of connecting to another component.

Version:

$Revision: 1.8 $

Author:

Dave Jurgens

See Also:

Serialized Form

Field Summary

private edu.wustl.doc.facet.EventChannelImpl	eventChannel The EventChannelImpl for this JVM.
private static long	serialVersionUID
private static connect.FacetChannelAdmin	singleton
private int	sourceType This variable + 1 represents the next available source type that a facet based component may use to filter.

Constructor Summary

private

FacetChannelAdmin()

Method Summary

edu.wustl.doc.facet.EventChannelImpl	getEventChannel() Returns the EventChannel for this JVM
int	getNextSourceType() Returns the next unique source type that a component can use.
static connect.FacetChannelAdmin	instance() Returns the singleton instance of this class.

Methods inherited from class java.lang.Object

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

Field Detail

serialVersionUID

private static final long serialVersionUID

See Also:

Constant Field Values

eventChannel

private final edu.wustl.doc.facet.EventChannelImpl eventChannel

The EventChannelImpl for this JVM.

singleton

private static connect.FacetChannelAdmin singleton

sourceType

private int sourceType

This variable + 1 represents the next available source type that a facet based component may use to filter. This source type is not used by any other facet components.

Constructor Detail

FacetChannelAdmin

private FacetChannelAdmin()

Method Detail

instance

public static connect.FacetChannelAdmin instance()

Returns the singleton instance of this class.

getEventChannel

public edu.wustl.doc.facet.EventChannelImpl getEventChannel()

Returns the EventChannel for this JVM

getNextSourceType

public int getNextSourceType()

Returns the next unique source type that a component can use. Note that for multiple JVM, two components may have the same source type but another component should never cross a JVM and still use the same source type. This is to say that a component should reacquire a new source type from that JVM's FacetChannelAdmin upon migrating.