io.druid.query.groupby.epinephelinae.IntGrouper Maven / Gradle / Ivy
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* Licensed to Metamarkets Group Inc. (Metamarkets) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. Metamarkets 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 io.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
{
default AggregateResult aggregate(int key)
{
return aggregate(key, hashFunction().apply(key));
}
AggregateResult aggregate(int key, 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 #aggregate(int, int)} instead.
*/
@Deprecated
@Override
default AggregateResult aggregate(Integer key, int keyHash)
{
Preconditions.checkNotNull(key);
return aggregate(key.intValue(), keyHash);
}
@Override
IntGrouperHashFunction hashFunction();
interface IntGrouperHashFunction extends ToIntFunction
{
@Override
default int applyAsInt(Integer value)
{
return apply(value.intValue());
}
int apply(int value);
}
}