| /* |
| * 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.ignite.internal.processors.cache.mvcc; |
| |
| import java.util.concurrent.atomic.AtomicLong; |
| import java.util.function.LongPredicate; |
| |
| /** |
| * |
| */ |
| public interface MvccCoordinatorChangeAware { |
| /** */ |
| AtomicLong ID_CNTR = new AtomicLong(); |
| |
| /** */ |
| long MVCC_TRACKER_ID_NA = -1; |
| |
| /** */ |
| LongPredicate ID_FILTER = id -> id != MVCC_TRACKER_ID_NA; |
| |
| /** |
| * Mvcc coordinator change callback. |
| * |
| * @param newCrd New mvcc coordinator. |
| * @return Query id if exists. |
| */ |
| default long onMvccCoordinatorChange(MvccCoordinator newCrd) { |
| return MVCC_TRACKER_ID_NA; |
| } |
| } |