/*
* Copyright 2015 Red Hat, Inc. and/or its affiliates.
*
* 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 org.optaplanner.core.impl.domain.variable.listener.support;
import java.util.ArrayDeque;
import java.util.Collection;
import org.optaplanner.core.impl.domain.variable.listener.VariableListener;
public class VariableListenerNotifiable implements Comparable<VariableListenerNotifiable> {
protected final VariableListener variableListener;
protected final int globalOrder;
protected final Collection<VariableListenerNotification> notificationQueue;
public VariableListenerNotifiable(VariableListener variableListener, int globalOrder) {
this.variableListener = variableListener;
this.globalOrder = globalOrder;
if (variableListener.requiresUniqueEntityEvents()) {
notificationQueue = new SmallScalingOrderedSet<>();
} else {
notificationQueue = new ArrayDeque<>();
}
}
public VariableListener getVariableListener() {
return variableListener;
}
public int getGlobalOrder() {
return globalOrder;
}
public Collection<VariableListenerNotification> getNotificationQueue() {
return notificationQueue;
}
@Override
public int compareTo(VariableListenerNotifiable other) {
if (globalOrder < other.globalOrder) {
return -1;
} else if (globalOrder > other.globalOrder) {
return 1;
} else {
return 0;
}
}
@Override
public String toString() {
return "(" + globalOrder + ") " + variableListener;
}
}