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/*
* 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 ConsistentMap update notification.
*
* @param <K> key type
* @param <V> value type
*/
public class MapEvent<K, V> {
/**
* MapEvent type.
*/
public enum Type {
/**
* Entry inserted into the map.
*/
INSERT,
/**
* Existing map entry updated.
*/
UPDATE,
/**
* Entry removed from map.
*/
REMOVE
}
private final String name;
private final Type type;
private final K key;
private final Versioned<V> value;
/**
* Creates a new event object.
*
* @param name map name
* @param type type of event
* @param key key the event concerns
* @param value value key is mapped to
*/
public MapEvent(String name, Type type, K key, Versioned<V> value) {
this.name = name;
this.type = type;
this.key = key;
this.value = value;
}
/**
* Returns the map name.
*
* @return name of map
*/
public String name() {
return name;
}
/**
* Returns the type of the event.
*
* @return the type of event
*/
public Type type() {
return type;
}
/**
* Returns the key this event concerns.
*
* @return the key
*/
public K key() {
return key;
}
/**
* Returns the value associated with this event. If type is REMOVE,
* this is the value that was removed. If type is INSERT/UPDATE, this is
* the new value.
*
* @return the value
*/
public Versioned<V> value() {
return value;
}
@Override
public boolean equals(Object o) {
if (!(o instanceof MapEvent)) {
return false;
}
MapEvent<K, V> that = (MapEvent) o;
return Objects.equals(this.name, that.name) &&
Objects.equals(this.type, that.type) &&
Objects.equals(this.key, that.key) &&
Objects.equals(this.value, that.value);
}
@Override
public int hashCode() {
return Objects.hash(name, type, key, value);
}
@Override
public String toString() {
return MoreObjects.toStringHelper(getClass())
.add("name", name)
.add("type", type)
.add("key", key)
.add("value", value)
.toString();
}
}
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