/*
* #!
* 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.impl.utils;
import java.util.HashMap;
import java.util.Map;
import net.ontopia.topicmaps.core.index.IndexIF;
/**
* INTERNAL: An abstract dynamic index superclass.
*/
public abstract class BasicIndex extends AbstractIndex implements EventListenerIF {
protected Map<String, EventListenerIF> handlers = new HashMap<String, EventListenerIF>();
public IndexIF getIndex() {
return this;
}
// -----------------------------------------------------------------------------
// EventListenerIF
// -----------------------------------------------------------------------------
public void processEvent(Object object, String event, Object new_value, Object old_value) {
if (handlers.containsKey(event)) {
handlers.get(event).processEvent(object, event, new_value, old_value);
}
}
// -----------------------------------------------------------------------------
// Event handlers
// -----------------------------------------------------------------------------
public abstract class EventHandler implements EventListenerIF {
public abstract void processEvent(Object object, String event, Object new_value, Object old_value);
protected void addEvent(Object object, String event, Object value) {
handlers.get(event).processEvent(object, event, value, null);
}
protected void removeEvent(Object object, String event, Object value) {
handlers.get(event).processEvent(object, event, null, value);
}
}
}