| /* |
| * 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; |
| |
| import java.util.Comparator; |
| |
| /** |
| * |
| * This interface is to be implemented by all the query SelectResults implementation which have |
| * ordered data. This encompasses those classes which have data stored in a List, LinkedMap, |
| * LinkedSet, TreeMap , TreeSet etc. |
| * |
| * @see NWayMergeResults |
| * @see SortedResultsBag |
| * @see SortedStructBag |
| * @see SortedStructSet |
| * @see SortedResultSet |
| * @see LinkedResultSet |
| * @see LinkedStructSet |
| * |
| */ |
| public interface Ordered { |
| Comparator comparator(); |
| |
| // Implies that underlying structure is a LinkedHashMap or LinkedHashSet & the structs are stored |
| // directly , ie not in terms of Object[] |
| // SortedResultsBag, LinkedResultSet are two such types. |
| |
| boolean dataPreordered(); |
| } |