/*
* 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.util.timebuffer;
public class LongEntityAccess implements EntityAccess<TimestampedLong> {
@Override
public TimestampedLong aggregate(TimestampedLong oldValue, TimestampedLong toAdd) {
if (oldValue == null && toAdd == null) {
return new TimestampedLong(0L);
} else if (oldValue == null) {
return toAdd;
} else if (toAdd == null) {
return oldValue;
}
return new TimestampedLong(oldValue.getValue() + toAdd.getValue());
}
@Override
public TimestampedLong createNew() {
return new TimestampedLong(0L);
}
@Override
public long getTimestamp(TimestampedLong entity) {
return entity == null ? 0L : entity.getTimestamp();
}
}