net.ontopia.topicmaps.impl.utils

Class AbstractSubjectIdentityCache

java.lang.Object

net.ontopia.topicmaps.impl.utils.AbstractSubjectIdentityCache

All Implemented Interfaces:

Serializable, EventListenerIF

Direct Known Subclasses:

SubjectIdentityCache, SubjectIdentityCache

public abstract class AbstractSubjectIdentityCache
extends Object
implements EventListenerIF, Serializable

INTERNAL: Class that maintains indexes for use with the TopicMapIF locator lookup methods. This is especially useful in the cases where the topic map object cannot use queries to do the lookups.

This class uses the event model to maintain its indexes.

See Also:

Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
protected class	AbstractSubjectIdentityCache.EventHandler

Field Summary

Fields

Modifier and Type	Field and Description
protected Map<String,AbstractSubjectIdentityCache.EventHandler>	handlers

Constructor Summary

Constructors

Constructor and Description
AbstractSubjectIdentityCache(Map<String,AbstractSubjectIdentityCache.EventHandler> handlers)

Method Summary

Modifier and Type	Method and Description
protected abstract TMObjectIF	_getObjectByItemIdentifier(LocatorIF source_locator)
protected abstract TopicIF	_getTopicBySubjectIdentifier(LocatorIF subject_indicator)
protected abstract TopicIF	_getTopicBySubjectLocator(LocatorIF subject)
abstract TMObjectIF	getObjectById(String object_id)
abstract TMObjectIF	getObjectByItemIdentifier(LocatorIF locator)
abstract TopicIF	getTopicBySubjectIdentifier(LocatorIF locator)
abstract TopicIF	getTopicBySubjectLocator(LocatorIF locator)
void	processEvent(Object object, String event, Object new_value, Object old_value) INTERNAL: A method that receives notification when an event has been triggered.
void	registerListeners(EventManagerIF emanager, EventManagerIF otree) INTERNAL: Registers the subject identity cache listeners with the default event manager and the object tree event managers.
protected void	registerObject(TMObjectIF object) INTERNAL: Register the object with the identity map.
protected abstract void	registerSourceLocator(LocatorIF source_locator, TMObjectIF object)
protected abstract void	registerSubject(LocatorIF subject, TopicIF object)
protected abstract void	registerSubjectIndicator(LocatorIF subject_indicator, TopicIF object)
protected void	unregisterObject(TMObjectIF object) INTERNAL: Unregister the object with the identity map.
protected abstract void	unregisterSourceLocator(LocatorIF source_locator)
protected abstract void	unregisterSubject(LocatorIF subject)
protected abstract void	unregisterSubjectIndicator(LocatorIF subject_indicator)

Methods inherited from class java.lang.Object

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

Field Detail

handlers

protected Map<String,AbstractSubjectIdentityCache.EventHandler> handlers

Constructor Detail

AbstractSubjectIdentityCache

public AbstractSubjectIdentityCache(Map<String,AbstractSubjectIdentityCache.EventHandler> handlers)

Method Detail

registerListeners

public void registerListeners(EventManagerIF emanager,
                              EventManagerIF otree)

INTERNAL: Registers the subject identity cache listeners with the default event manager and the object tree event managers.

Parameters:

emanager - The default event manager.

otree - The object tree manager.

getObjectById

public abstract TMObjectIF getObjectById(String object_id)

getObjectByItemIdentifier

public abstract TMObjectIF getObjectByItemIdentifier(LocatorIF locator)

getTopicBySubjectLocator

public abstract TopicIF getTopicBySubjectLocator(LocatorIF locator)

getTopicBySubjectIdentifier

public abstract TopicIF getTopicBySubjectIdentifier(LocatorIF locator)

registerObject

protected void registerObject(TMObjectIF object)

INTERNAL: Register the object with the identity map. Does nothing by default.

unregisterObject

protected void unregisterObject(TMObjectIF object)

INTERNAL: Unregister the object with the identity map. Does nothing by default.

_getObjectByItemIdentifier

protected abstract TMObjectIF _getObjectByItemIdentifier(LocatorIF source_locator)

registerSourceLocator

protected abstract void registerSourceLocator(LocatorIF source_locator,
                                              TMObjectIF object)

unregisterSourceLocator

protected abstract void unregisterSourceLocator(LocatorIF source_locator)

_getTopicBySubjectIdentifier

protected abstract TopicIF _getTopicBySubjectIdentifier(LocatorIF subject_indicator)

registerSubjectIndicator

protected abstract void registerSubjectIndicator(LocatorIF subject_indicator,
                                                 TopicIF object)

unregisterSubjectIndicator

protected abstract void unregisterSubjectIndicator(LocatorIF subject_indicator)

_getTopicBySubjectLocator

protected abstract TopicIF _getTopicBySubjectLocator(LocatorIF subject)

registerSubject

protected abstract void registerSubject(LocatorIF subject,
                                        TopicIF object)

unregisterSubject

protected abstract void unregisterSubject(LocatorIF subject)

processEvent

public void processEvent(Object object,
                         String event,
                         Object new_value,
                         Object old_value)

Description copied from interface: EventListenerIF

INTERNAL: A method that receives notification when an event has been triggered.

Specified by:

processEvent in interface EventListenerIF