/*
* #!
* Ontopia Engine
* #-
* Copyright (C) 2001 - 2013 The Ontopia Project
* #-
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
* !#
*/
package net.ontopia.topicmaps.core.events;
import net.ontopia.topicmaps.core.TMObjectIF;
import net.ontopia.topicmaps.entry.TopicMapReferenceIF;
/**
* PUBLIC: Base class for topic map listeners. Subclass this abstract
* listener class if you want to create your own listener
* implementation. Subclassing this class will make sure that any
* extensions to the TopicMapListenerIF interface will be catered for
* in the future, preventing inconsistencies. Methods implemented by
* this abstract class have empty method bodies.
*
* @since 3.4.3
*/
public abstract class AbstractTopicMapListener implements TopicMapListenerIF {
public void objectAdded(TMObjectIF snapshot) {
// no-op
}
public void objectModified(TMObjectIF snapshot) {
// no-op
}
public void objectRemoved(TMObjectIF snapshot) {
// no-op
}
/**
* INTERNAL: Callback method called when listener is being
* registered or unregistered with a topic map reference.
*/
public void setReference(TopicMapReferenceIF ref) {
// no-op
}
}