io.druid.segment.ZeroDoubleColumnSelector Maven / Gradle / Ivy
/*
* 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.segment;
import io.druid.query.monomorphicprocessing.RuntimeShapeInspector;
public final class ZeroDoubleColumnSelector implements DoubleColumnSelector
{
private static final ZeroDoubleColumnSelector INSTANCE = new ZeroDoubleColumnSelector();
private ZeroDoubleColumnSelector()
{
// No instantiation.
}
public static ZeroDoubleColumnSelector instance()
{
return INSTANCE;
}
@Override
public double getDouble()
{
return 0.0d;
}
@Override
public void inspectRuntimeShape(RuntimeShapeInspector inspector)
{
// nothing to inspect
}
}