| /* |
| * 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.geode.cache.query.internal.types; |
| |
| import java.util.Comparator; |
| |
| import org.apache.geode.cache.query.internal.NullToken; |
| import org.apache.geode.cache.query.internal.Undefined; |
| |
| /** |
| * A general comparator that will let us compare different numeric types for equality |
| * |
| */ |
| |
| public class ExtendedNumericComparator extends NumericComparator implements Comparator { |
| |
| @Override |
| public boolean equals(Object obj) { |
| return obj instanceof ExtendedNumericComparator; |
| } |
| |
| @Override |
| public int hashCode() { |
| return ExtendedNumericComparator.class.hashCode(); |
| } |
| |
| @Override |
| public int compare(Object obj1, Object obj2) { |
| if (obj1.getClass() != obj2.getClass() && (obj1 instanceof Number && obj2 instanceof Number)) { |
| return super.compare(obj1, obj2); |
| } else if (obj2 instanceof Undefined && !(obj1 instanceof Undefined)) { |
| // Everthing should be greater than Undefined |
| return 1; |
| } else if (obj2 instanceof NullToken && !(obj1 instanceof NullToken)) { |
| // Everthing should be greater than Null |
| return 1; |
| } |
| |
| return ((Comparable) obj1).compareTo(obj2); |
| } |
| } |