| /* |
| * Copyright 2015 Open Networking Laboratory |
| * |
| * 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.onosproject.store.service; |
| |
| import java.util.Objects; |
| |
| import com.google.common.base.MoreObjects; |
| |
| /** |
| * Representation of a AtomicValue update notification. |
| * |
| * @param <V> atomic value type |
| */ |
| public final class AtomicValueEvent<V> { |
| |
| /** |
| * AtomicValueEvent type. |
| */ |
| public enum Type { |
| |
| /** |
| * Value was updated. |
| */ |
| UPDATE, |
| } |
| |
| private final String name; |
| private final V newValue; |
| private final V oldValue; |
| |
| /** |
| * Creates a new event object. |
| * |
| * @param name AtomicValue name |
| * @param newValue the new value |
| * @param oldValue the old value |
| */ |
| public AtomicValueEvent(String name, V newValue, V oldValue) { |
| this.name = name; |
| this.newValue = newValue; |
| this.oldValue = oldValue; |
| } |
| |
| /** |
| * Returns the AtomicValue name. |
| * |
| * @return name of atomic value |
| */ |
| public String name() { |
| return name; |
| } |
| |
| /** |
| * Returns the type of the event. |
| * |
| * @return the type of the event |
| */ |
| public Type type() { |
| return AtomicValueEvent.Type.UPDATE; |
| } |
| |
| /** |
| * Returns the newly set value. |
| * |
| * @return the new value |
| */ |
| public V newValue() { |
| return newValue; |
| } |
| |
| /** |
| * Returns the old replaced value. |
| * |
| * @return the old value |
| */ |
| public V oldValue() { |
| return oldValue; |
| } |
| |
| @Override |
| public boolean equals(Object o) { |
| if (!(o instanceof AtomicValueEvent)) { |
| return false; |
| } |
| |
| AtomicValueEvent that = (AtomicValueEvent) o; |
| return Objects.equals(this.name, that.name) && |
| Objects.equals(this.newValue, that.newValue) && |
| Objects.equals(this.oldValue, that.oldValue); |
| } |
| |
| @Override |
| public int hashCode() { |
| return Objects.hash(name, newValue, oldValue); |
| } |
| |
| @Override |
| public String toString() { |
| return MoreObjects.toStringHelper(getClass()) |
| .add("name", name) |
| .add("newValue", newValue) |
| .add("oldValue", oldValue) |
| .toString(); |
| } |
| } |