| /* |
| * 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.aggregation; |
| |
| import javax.annotation.Nullable; |
| |
| /** |
| * An Aggregator that delegates everything. It is used by Aggregator wrappers e.g. |
| * {@link StringColumnDoubleAggregatorWrapper} that modify some behavior of a delegate. |
| */ |
| public abstract class DelegatingAggregator implements Aggregator |
| { |
| protected Aggregator delegate; |
| |
| @Override |
| public void aggregate() |
| { |
| delegate.aggregate(); |
| } |
| |
| @Nullable |
| @Override |
| public Object get() |
| { |
| return delegate.get(); |
| } |
| |
| @Override |
| public float getFloat() |
| { |
| return delegate.getFloat(); |
| } |
| |
| @Override |
| public long getLong() |
| { |
| return delegate.getLong(); |
| } |
| |
| @Override |
| public double getDouble() |
| { |
| return delegate.getDouble(); |
| } |
| |
| @Override |
| public boolean isNull() |
| { |
| return delegate.isNull(); |
| } |
| |
| @Override |
| public void close() |
| { |
| delegate.close(); |
| } |
| } |