com.hazelcast.org.apache.calcite.runtime.Unit Maven / Gradle / Ivy
/*
* 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 com.hazelcast.org.apache.calcite.runtime;
/**
* Synthetic record with zero fields.
*
* Since all instances are identical, {@code Unit} is a singleton.
*/
public class Unit implements Comparable {
public static final Unit INSTANCE = new Unit();
private Unit() {
}
public int compareTo(Unit that) {
return 0;
}
public String toString() {
return "{}";
}
}