| /* |
| * 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.druid.query.groupby.epinephelinae; |
| |
| import com.google.common.base.Preconditions; |
| |
| import java.util.function.ToIntFunction; |
| |
| /** |
| * {@link Grouper} specialized for the primitive int type |
| */ |
| public interface IntGrouper extends Grouper<Integer> |
| { |
| default AggregateResult aggregate(int key) |
| { |
| return aggregateKeyHash(hashFunction().apply(key)); |
| } |
| |
| AggregateResult aggregateKeyHash(int keyHash); |
| |
| /** |
| * {@inheritDoc} |
| * |
| * @deprecated Please use {@link #aggregate(int)} instead. |
| */ |
| @Deprecated |
| @Override |
| default AggregateResult aggregate(Integer key) |
| { |
| Preconditions.checkNotNull(key); |
| return aggregate(key.intValue()); |
| } |
| |
| /** |
| * {@inheritDoc} |
| * |
| * @deprecated Please use {@link #aggregateKeyHash(int)} instead. |
| */ |
| @Deprecated |
| @Override |
| default AggregateResult aggregate(Integer key, int keyHash) |
| { |
| Preconditions.checkNotNull(key); |
| return aggregateKeyHash(keyHash); |
| } |
| |
| @Override |
| IntGrouperHashFunction hashFunction(); |
| |
| interface IntGrouperHashFunction extends ToIntFunction<Integer> |
| { |
| @Override |
| default int applyAsInt(Integer value) |
| { |
| return apply(value.intValue()); |
| } |
| |
| int apply(int value); |
| } |
| } |