/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.apache.nifi.distributed.cache.server.map;
import java.nio.ByteBuffer;
import java.util.Arrays;
import org.apache.nifi.distributed.cache.server.CacheRecord;
public class MapCacheRecord extends CacheRecord {
private final ByteBuffer key;
private final ByteBuffer value;
/**
* Revision is a number that increases every time the key is updated.
*/
private final long revision;
public MapCacheRecord(final ByteBuffer key, final ByteBuffer value) {
this(key, value, -1L);
}
public MapCacheRecord(final ByteBuffer key, final ByteBuffer value, final long revision) {
this.key = key;
this.value = value;
this.revision = revision;
}
public ByteBuffer getKey() {
return key;
}
public ByteBuffer getValue() {
return value;
}
@Override
public int hashCode() {
return Arrays.hashCode(new Object[]{key, value, revision});
}
@Override
public boolean equals(final Object obj) {
if (obj == this) {
return true;
}
if (obj instanceof MapCacheRecord) {
final MapCacheRecord that = ((MapCacheRecord) obj);
return key.equals(that.key) && value.equals(that.value) && revision == that.revision;
}
return false;
}
public long getRevision() {
return revision;
}
}